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Final Exam quiz 1

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Computer Science Test sobre Final Exam quiz 1, creado por Gigel Gigel el 26/01/2020.
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Resumen del Recurso

Pregunta 1

Pregunta
What is a characteristic of a fault tolerant network?
Respuesta
  • a network that protects confidential information from unauthorized access
  • a network that can expand quickly to support new users and applications without impacting the performance of the service delivered to existing users
  • a network that supports a mechanism for managing congestion and ensuring reliable delivery of content to all users
  • a network that recovers quickly when a failure occurs and depends on redundancy to limit the impact of a failure

Pregunta 2

Pregunta
Three bank employees are using the corporate network. The first employee uses a web browser to view a company web page in order to read some announcements. The second employee accesses the corporate database to perform some financial transactions. The third employee participates in an important live audio conference with other corporate managers in branch offices. If QoS is implemented on this network, what will be the priorities from highest to lowest of the different data types?
Respuesta
  • financial transactions, audio conference, web page
  • audio conference, financial transactions, web page
  • audio conference, web page, financial transactions
  • financial transactions, web page, audio conference

Pregunta 3

Pregunta
What is a benefit of using cloud computing in networking?
Respuesta
  • End users have the freedom to use personal tools to access information and communicate across a business network.
  • Network capabilities are extended without requiring investment in new infrastructure, personnel, or software.
  • Technology is integrated into every-day appliances allowing them to interconnect with other devices, making them more ‘smart’ or automated.
  • Home networking uses existing electrical wiring to connect devices to the network wherever there is an electrical outlet, saving the cost of installing data cables.

Pregunta 4

Pregunta
What is the function of the shell in an OS?
Respuesta
  • It interacts with the device hardware.
  • It interfaces between the users and the kernel.
  • It provides dedicated firewall services.
  • It provides the intrusion protection services for the device

Pregunta 5

Pregunta
Which connection provides a secure CLI session with encryption to a Cisco switch?
Respuesta
  • a console connection
  • an AUX connection
  • a Telnet connection
  • an SSH connection

Pregunta 6

Pregunta
A network technician is attempting to configure an interface by entering the following command: SanJose(config)# ip address 192.168.2.1 255.255.255.0. The command is rejected by the device. What is the reason for this?
Respuesta
  • The command is being entered from the wrong mode of operation.
  • The command syntax is wrong.
  • The subnet mask information is incorrect.
  • The interface is shutdown and must be enabled before the switch will accept the IP address.

Pregunta 7

Pregunta
An administrator uses the Ctrl-Shift-6 key combination on a switch after issuing the ping command. What is the purpose of using these keystrokes?
Respuesta
  • to restart the ping process
  • to interrupt the ping process
  • to exit to a different configuration mode
  • to allow the user to complete the command

Pregunta 8

Pregunta
Refer to the exhibit. A network administrator is configuring access control to switch SW1. If the administrator uses a console connection to connect to the switch, which password is needed to access user EXEC mode?
Image:
2017 05 28 200126 (image/png)
Respuesta
  • letmein
  • secretin
  • linevtyin
  • lineconin

Pregunta 9

Pregunta
On which switch interface would an administrator configure an IP address so that the switch can be managed remotely?
Respuesta
  • FastEthernet0/1
  • VLAN 1
  • vty 0
  • console 0

Pregunta 10

Pregunta
What protocol is responsible for controlling the size of segments and the rate at which segments are exchanged between a web client and a web server?
Respuesta
  • TCP
  • IP
  • HTTP
  • Ethernet

Pregunta 11

Pregunta
What is an advantage to using a protocol that is defined by an open standard?
Respuesta
  • A company can monopolize the market.
  • The protocol can only be run on equipment from a specific vendor.
  • An open standard protocol is not controlled or regulated by standards organizations.
  • It encourages competition and promotes choices.

Pregunta 12

Pregunta
What are two benefits of using a layered network model? (Choose two.)
Respuesta
  • It assists in protocol design.
  • It speeds up packet delivery.
  • It prevents designers from creating their own model.
  • It prevents technology in one layer from affecting other layers.
  • It ensures a device at one layer can function at the next higher layer.

Pregunta 13

Pregunta
Which two OSI model layers have the same functionality as two layers of the TCP/IP model? (Choose two.)
Respuesta
  • data link
  • network
  • physical
  • session
  • transport

Pregunta 14

Pregunta
Which name is assigned to the transport layer PDU?
Respuesta
  • bits
  • data
  • frame
  • packet
  • segment

Pregunta 15

Pregunta
A network engineer is measuring the transfer of bits across the company backbone for a mission critical database application. The engineer notices that the network throughput appears lower than the bandwidth expected. Which three factors could influence the differences in throughput? (Choose three.)
Respuesta
  • the amount of traffic that is currently crossing the network
  • the sophistication of the encapsulation method applied to the data
  • the type of traffic that is crossing the network
  • the latency that is created by the number of network devices that the data is crossing
  • the bandwidth of the WAN connection to the Internet
  • the reliability of the gigabit Ethernet infrastructure of the backbone

Pregunta 16

Pregunta
A network administrator is troubleshooting connectivity issues on a server. Using a tester, the administrator notices that the signals generated by the server NIC are distorted and not usable. In which layer of the OSI model is the error categorized?
Respuesta
  • presentation layer
  • network layer
  • physical layer
  • data link layer

Pregunta 17

Pregunta
Which type of UTP cable is used to connect a PC to a switch port?
Respuesta
  • console
  • rollover
  • crossover
  • straight-through

Pregunta 18

Pregunta
A network administrator is measuring the transfer of bits across the company backbone for a mission critical financial application. The administrator notices that the network throughput appears lower than the bandwidth expected. Which three factors could influence the differences in throughput? (Choose three.)
Respuesta
  • the amount of traffic that is currently crossing the network
  • the sophistication of the encapsulation method applied to the data
  • the type of traffic that is crossing the network
  • the latency that is created by the number of network devices that the data is crossing
  • the bandwidth of the WAN connection to the Internet
  • the reliability of the gigabit Ethernet infrastructure of the backbone

Pregunta 19

Pregunta
What is a characteristic of UTP cabling?
Respuesta
  • cancellation
  • cladding
  • immunity to electrical hazards
  • woven copper braid or metallic foil

Pregunta 20

Pregunta
What are two characteristics of fiber-optic cable? (Choose two.)
Respuesta
  • It is not affected by EMI or RFI.
  • Each pair of cables is wrapped in metallic foil.
  • It combines the technique of cancellation, shielding, and twisting to protect data.
  • It typically contains 4 pairs of fiber-optic wires.
  • It is more expensive than UTP cabling is.

Pregunta 21

Pregunta
What is a characteristic of the LLC sublayer?
Respuesta
  • It provides the logical addressing required that identifies the device.
  • It provides delimitation of data according to the physical signaling requirements of the medium.
  • It places information in the frame allowing multiple Layer 3 protocols to use the same network interface and media.
  • It defines software processes that provide services to the physical layer.

Pregunta 22

Pregunta
A network team is comparing physical WAN topologies for connecting remote sites to a headquarters building. Which topology provides high availability and connects some, but not all, remote sites?
Respuesta
  • mesh
  • partial mesh
  • hub and spoke
  • point-to-point

Pregunta 23

Pregunta
What method is used to manage contention-based access on a wireless network?
Respuesta
  • CSMA/CD
  • priority ordering
  • CSMA/CA
  • token passing

Pregunta 24

Pregunta
What are the three primary functions provided by Layer 2 data encapsulation? (Choose three.)
Respuesta
  • error correction through a collision detection method
  • session control using port numbers
  • data link layer addressing
  • placement and removal of frames from the media
  • detection of errors through CRC calculations
  • delimiting groups of bits into frames
  • conversion of bits into data signals

Pregunta 25

Pregunta
What will a host on an Ethernet network do if it receives a frame with a destination MAC address that does not match its own MAC address?
Respuesta
  • It will discard the frame.
  • It will forward the frame to the next host.
  • It will remove the frame from the media.
  • It will strip off the data-link frame to check the destination IP address.

Pregunta 26

Pregunta
What are two examples of the cut-through switching method? (Choose two.)
Respuesta
  • store-and-forward switching
  • fast-forward switching
  • CRC switching
  • fragment-free switching
  • QOS switching

Pregunta 27

Pregunta
What are two actions performed by a Cisco switch? (Choose two.)
Respuesta
  • building a routing table that is based on the first IP address in the frame header
  • using the source MAC addresses of frames to build and maintain a MAC address table
  • forwarding frames with unknown destination IP addresses to the default gateway
  • utilizing the MAC address table to forward frames via the destination MAC address
  • examining the destination MAC address to add new entries to the MAC address table

Pregunta 28

Pregunta
Which frame forwarding method receives the entire frame and performs a CRC check to detect errors before forwarding the frame?
Respuesta
  • cut-through switching
  • store-and-forward switching
  • fragment-free switching
  • fast-forward switching

Pregunta 29

Pregunta
Refer to the exhibit. If host A sends an IP packet to host B, what will the destination address be in the frame when it leaves host A?
Image:
2017 05 28 195511 (image/png)
Respuesta
  • DD:DD:DD:DD:DD:DD
  • 172.168.10.99
  • CC:CC:CC:CC:CC:CC
  • 172.168.10.65
  • BB:BB:BB:BB:BB:BB
  • AA:AA:AA:AA:AA:AA

Pregunta 30

Pregunta
What addresses are mapped by ARP?
Respuesta
  • destination MAC address to a destination IPv4 address
  • destination IPv4 address to the source MAC address
  • destination IPv4 address to the destination host name
  • destination MAC address to the source IPv4 address

Pregunta 31

Pregunta
What information is added during encapsulation at OSI Layer 3?
Respuesta
  • source and destination MAC
  • source and destination application protocol
  • ource and destination port number
  • source and destination IP address

Pregunta 32

Pregunta
What are two services provided by the OSI network layer? (Choose two.)
Respuesta
  • performing error detection
  • routing packets toward the destination
  • encapsulating PDUs from the transport layer
  • placement of frames on the media
  • collision detection

Pregunta 33

Pregunta
Refer to the exhibit. The network administrator for a small advertising company has chosen to use the 192.168.5.96/27 network for internal LAN addressing. As shown in the exhibit, a static IP address is assigned to the company web server. However, the web server cannot access the Internet. The administrator verifies that local workstations with IP addresses that are assigned by a DHCP server can access the Internet, and the web server is able to ping local workstations. Which component is incorrectly configured?
Image:
I274685v1n1 38117 (image/jpeg)
Respuesta
  • subnet mask
  • DNS address
  • host IP address
  • default gateway address

Pregunta 34

Pregunta
Why does a Layer 3 device perform the ANDing process on a destination IP address and subnet mask?
Respuesta
  • to identify the broadcast address of the destination network
  • to identify the host address of the destination host
  • to identify faulty frames
  • to identify the network address of the destination network

Pregunta 35

Pregunta
What are two functions of NVRAM? (Choose two.)
Respuesta
  • to store the routing table
  • to retain contents when power is removed
  • to store the startup configuration file
  • to contain the running configuration file
  • to store the ARP table

Pregunta 36

Pregunta
Refer to the exhibit. What will be the result of entering this configuration the next time a network administrator connects a console cable to the router and no additional commands have been entered?
Image:
2017 05 28 195821 (image/png)
Respuesta
  • The administrator will be required to enter Cisco123.
  • The administrator will be required to enter Cisco234.
  • The administrator will be required to enter Cisco789.
  • The administrator will be presented with the R1> prompt.

Pregunta 37

Pregunta
What is the dotted decimal representation of the IPv4 address 11001011.00000000.01110001.11010011?
Respuesta
  • 192.0.2.199
  • 198.51.100.201
  • 203.0.113.211
  • 209.165.201.223

Pregunta 38

Pregunta
What are three characteristics of multicast transmission? (Choose three.)
Respuesta
  • The source address of a multicast transmission is in the range of 224.0.0.0 to 224.0.0.255.
  • A single packet can be sent to a group of hosts.
  • Multicast transmission can be used by routers to exchange routing information.
  • Routers will not forward multicast addresses in the range of 224.0.0.0 to 224.0.0.255.
  • Computers use multicast transmission to request IPv4 addresses.
  • Multicast messages map lower layer addresses to upper layer addresses.

Pregunta 39

Pregunta
What are the three ranges of IP addresses that are reserved for internal private use? (Choose three.)
Respuesta
  • 10.0.0.0/8
  • 64.100.0.0/14
  • 127.16.0.0/12
  • 172.16.0.0/12
  • 192.31.7.0/24
  • 192.168.0.0/16

Pregunta 40

Pregunta
What purpose does NAT64 serve in IPv6?
Respuesta
  • It converts IPv6 packets into IPv4 packets.
  • It translates private IPv6 addresses into public IPv6 addresses.
  • It enables companies to use IPv6 unique local addresses in the network.
  • It converts regular IPv6 addresses into 64-bit addresses that can be used on the Internet.
  • It converts the 48-bit MAC address into a 64-bit host address that can be used for automatic host addressing.

Pregunta 41

Pregunta
What is the most compressed representation of the IPv6 address 2001:0000:0000:abcd:0000:0000:0000:0001?
Respuesta
  • 2001:0:abcd::1
  • 2001:0:0:abcd::1
  • 2001::abcd::1
  • 2001:0000:abcd::1
  • 2001::abcd:0:1

Pregunta 42

Pregunta
Which range of link-local addresses can be assigned to an IPv6-enabled interface?
Respuesta
  • FEC0::/10
  • FDEE::/7
  • FE80::/10
  • FF00::/8

Pregunta 43

Pregunta
Which three addresses are valid public addresses? (Choose three.)
Respuesta
  • 198.133.219.17
  • 192.168.1.245
  • 10.15.250.5
  • 128.107.12.117
  • 192.15.301.240
  • 64.104.78.227

Pregunta 44

Pregunta
Refer to the exhibit. On the basis of the output, which two statements about network connectivity are correct? (Choose two.)
Image:
I275429v1n1 Chapter 9 Wan Images2 1 (image/jpeg)
Respuesta
  • There is connectivity between this device and the device at 192.168.100.1.
  • The connectivity between these two hosts allows for videoconferencing calls.
  • There are 4 hops b**etween this device and the device at 192.168.100.1.
  • The average transmission time between the two hosts is 2 milliseconds.
  • This host does not have a default gateway configured.

Pregunta 45

Pregunta
What type of IPv6 address is FE80::1?
Respuesta
  • loopback
  • link-local
  • multicast
  • global unicast

Pregunta 46

Pregunta
How many valid host addresses are available on an IPv4 subnet that is configured with a /26 mask?
Respuesta
  • 254
  • 190
  • 192
  • 62
  • 64

Pregunta 47

Pregunta
A site administrator has been told that a particular network at the site must accommodate 126 hosts. Which subnet mask would be used that contains the required number of host bits?
Respuesta
  • 255.255.255.0
  • 255.255.255.128
  • 255.255.255.224
  • 255.255.255.240

Pregunta 48

Pregunta
A network administrator wants to have the same subnet mask for three subnetworks at a small site. The site has the following networks and numbers of devices: Subnetwork A: IP phones – 10 addresses Subnetwork B: PCs – 8 addresses Subnetwork C: Printers – 2 addresses What single subnet mask would be appropriate to use for the three subnetworks?
Respuesta
  • 255.255.255.0
  • 255.255.255.240
  • 255.255.255.248
  • 255.255.255.252

Pregunta 49

Pregunta
How many hosts are addressable on a network that has a mask of 255.255.255.248?
Respuesta
  • 2
  • 6
  • 8
  • 14
  • 16
  • 254

Pregunta 50

Pregunta
Which subnet would include the address 192.168.1.96 as a usable host address?
Respuesta
  • 192.168.1.64/26
  • 192.168.1.32/27
  • 192.168.1.32/28
  • 192.168.1.64/29

Pregunta 51

Pregunta
What subnet mask is needed if an IPv4 network has 40 devices that need IP addresses and address space is not to be wasted?
Respuesta
  • 255.255.255.0
  • 255.255.255.128
  • 255.255.255.192
  • 255.255.255.224
  • 255.255.255.240

Pregunta 52

Pregunta
What are two characteristics shared by TCP and UDP? (Choose two.)
Respuesta
  • default window size
  • connectionless communication
  • port numbering
  • 3-way handshake
  • ability to to carry digitized voice
  • use of checksum

Pregunta 53

Pregunta
Why are port numbers included in the TCP header of a segment?
Respuesta
  • to indicate the correct router interface that should be used to forward a segment
  • to identify which switch ports should receive or forward the segment
  • to determine which Layer 3 protocol should be used to encapsulate the data
  • to enable a receiving host to forward the data to the appropriate application
  • to allow the receiving host to assemble the packet in the proper order

Pregunta 54

Pregunta
Refer to the exhibit. Consider the IP address of 192.168.10.0/24 that has been assigned to a high school building. The largest network in this building has 100 devices. If 192.168.10.0 is the network number for the largest network, what would be the network number for the next largest network, which has 40 devices?
Image:
I245561v1n1 245561 (image/jpeg)
Respuesta
  • 192.168.10.0
  • 192.168.10.128
  • 192.168.10.192
  • 192.168.10.224
  • 192.168.10.240

Pregunta 55

Pregunta
Which statement is true about variable-length subnet masking?
Respuesta
  • Each subnet is the same size.
  • The size of each subnet may be different, depending on requirements.
  • Subnets may only be subnetted one additional time.
  • Bits are returned, rather than borrowed, to create additional subnets.

Pregunta 56

Pregunta
In what two situations would UDP be the preferred transport protocol over TCP? (Choose two.)
Respuesta
  • when applications need to guarantee that a packet arrives intact, in sequence, and unduplicated
  • when a faster delivery mechanism is needed
  • when delivery overhead is not an issue
  • when applications do not need to guarantee delivery of the data
  • when destination port numbers are dynamic

Pregunta 57

Pregunta
What important information is added to the TCP/IP transport layer header to ensure communication and connectivity with a remote network device?
Respuesta
  • timing and synchronization
  • destination and source port numbers
  • destination and source physical addresses
  • destination and source logical network addresses

Pregunta 58

Pregunta
What is the TCP mechanism used in congestion avoidance?
Respuesta
  • three-way handshake
  • socket pair
  • two-way handshake
  • sliding window

Pregunta 59

Pregunta
Which scenario describes a function provided by the transport layer?
Respuesta
  • A student is using a classroom VoIP phone to call home. The unique identifier burned into the phone is a transport layer address used to contact another network device on the same network.
  • A student is playing a short web-based movie with sound. The movie and sound are encoded within the transport layer header.
  • A student has two web browser windows open in order to access two web sites. The transport layer ensures the correct web page is delivered to the correct browser window.
  • A corporate worker is accessing a web server located on a corporate network. The transport layer formats the screen so the web page appears properly no matter what device is being used to view the web site.

Pregunta 60

Pregunta
A user opens three browsers on the same PC to access www.cisco.com to search for certification course information. The Cisco web server sends a datagram as a reply to the request from one of the web browsers. Which information is used by the TCP/IP protocol stack in the PC to identify which of the three web browsers should receive the reply?
Respuesta
  • the destination IP address
  • the destination port number
  • the source IP address
  • the source port number

Pregunta 61

Pregunta
What are two ways that TCP uses the sequence numbers in a segment? (Choose two.)
Respuesta
  • to identify missing segments at the destination
  • to reassemble the segments at the remote location
  • to specify the order in which the segments travel from source to destination
  • to limit the number of segments that can be sent out of an interface at one time
  • to determine if the packet changed during transit

Pregunta 62

Pregunta
Which two tasks are functions of the presentation layer? (Choose two.)
Respuesta
  • compression
  • addressing
  • encryption
  • session control
  • authentication

Pregunta 63

Pregunta
Which three statements characterize UDP? (Choose three.)
Respuesta
  • UDP provides basic connectionless transport layer functions.
  • UDP provides connection-oriented, fast transport of data at Layer 3.
  • UDP relies on application layer protocols for error detection.
  • UDP is a low overhead protocol that does not provide sequencing or flow control mechanisms.
  • UDP relies on IP for error detection and recovery.
  • UDP provides sophisticated flow control mechanisms.

Pregunta 64

Pregunta
What is a key characteristic of the peer-to-peer networking model?
Respuesta
  • wireless networking
  • social networking without the Internet
  • network printing using a print server
  • resource sharing without a dedicated server

Pregunta 65

Pregunta
A technician can ping the IP address of the web server of a remote company but cannot successfully ping the URL address of the same web server. Which software utility can the technician use to diagnose the problem?
Respuesta
  • tracert
  • ipconfig
  • netstat
  • nslookup

Pregunta 66

Pregunta
Which domain name would be an example of a top-level domain?
Respuesta
  • www.cisco.com
  • cisco.com
  • .com
  • root.cisco.com

Pregunta 67

Pregunta
A PC obtains its IP address from a DHCP server. If the PC is taken off the network for repair, what happens to the IP address configuration?
Respuesta
  • The configuration is permanent and nothing changes.
  • The address lease is automatically renewed until the PC is returned.
  • The address is returned to the pool for reuse when the lease expires.
  • The configuration is held by the server to be reissued when the PC is returned.

Pregunta 68

Pregunta
When planning for network growth, where in the network should packet captures take place to assess network traffic?
Respuesta
  • on as many different network segments as possible
  • only at the edge of the network
  • between hosts and the default gateway
  • only on the busiest network segment

Pregunta 69

Pregunta
A wireless host needs to request an IP address. What protocol would be used to process the request?
Respuesta
  • FTP
  • HTTP
  • DHCP
  • ICMP
  • SNMP

Pregunta 70

Pregunta
Which example of malicious code would be classified as a Trojan horse?
Respuesta
  • malware that was written to look like a video game
  • malware that requires manual user intervention to spread between systems
  • malware that attaches itself to a legitimate program and spreads to other programs when launched
  • malware that can automatically spread from one system to another by exploiting a vulnerability in the target

Pregunta 71

Pregunta
When applied to a router, which command would help mitigate brute-force password attacks against the router?
Respuesta
  • exec-timeout 30
  • service password-encryption
  • banner motd $Max failed logins = 5$
  • login block-for 60 attempts 5 within 60

Pregunta 72

Pregunta
A network technician suspects that a particular network connection between two Cisco switches is having a duplex mismatch. Which command would the technician use to see the Layer 1 and Layer 2 details of a switch port?
Respuesta
  • show mac-address-table
  • show ip interface brief
  • show interfaces
  • show running-config

Pregunta 73

Pregunta
Where are Cisco IOS debug output messages sent by default?
Respuesta
  • Syslog server
  • console line
  • memory buffers
  • vty lines

Pregunta 74

Pregunta
Refer to the exhibit. An administrator is testing connectivity to a remote device with the IP address 10.1.1.1. What does the output of this command indicate?
Image:
I204753v1n2 Question 9 (image/jpeg)
Respuesta
  • Connectivity to the remote device was successful.
  • A router along the path did not have a route to the destination.
  • A ping packet is being blocked by a security device along the path.
  • The connection timed out while waiting for a reply from the remote device.

Pregunta 75

Pregunta
A user is unable to reach the web site when typing http://www.cisco.com in a web browser, but can reach the same site by typing http://72.163.4.161. What is the issue?
Respuesta
  • default gateway
  • DHCP
  • TCP/IP protocol stack
  • DNS

Pregunta 76

Pregunta
A company is expanding its business to other countries. All branch offices must remain connected to corporate headquarters at all times. Which network technology is required to support this requirement?
Respuesta
  • LAN
  • MAN
  • WAN
  • WLAN

Pregunta 77

Pregunta
A home user is looking for an ISP connection that provides high speed digital transmission over regular phone lines. What ISP connection type should be used?
Respuesta
  • DSL
  • dial-up
  • satellite
  • cell modem
  • cable modem

Pregunta 78

Pregunta
How does quality of service help a network support a wide range of applications and services?
Respuesta
  • by limiting the impact of a network failure
  • by allowing quick recovery from network failures
  • by providing mechanisms to manage congested network traffic
  • by providing the ability for the network to grow to accommodate new users

Pregunta 79

Pregunta
What source IP address does a router use by default when the traceroute command is issued?
Respuesta
  • the highest configured IP address on the router
  • the lowest configured IP address on the router
  • a loopback IP address
  • the IP address of the outbound interface

Pregunta 80

Pregunta
After making configuration changes on a Cisco switch, a network administrator issues a copy running-config startup-config command. What is the result of issuing this command?
Respuesta
  • The new configuration will be stored in flash memory.
  • The new configuration will be loaded if the switch is restarted.
  • The current IOS file will be replaced with the newly configured file.
  • The configuration changes will be removed and the original configuration will be restored.

Pregunta 81

Pregunta
Refer to the exhibit. A network administrator is configuring access control to switch SW1. If the administrator has already logged into a Telnet session on the switch, which password is needed to access privileged EXEC mode?
Image:
I223580v1n1 208237 (image/jpeg)
Respuesta
  • letmein
  • secretin
  • lineconin
  • linevtyin

Pregunta 82

Pregunta
Which connection provides a secure CLI session with encryption to a Cisco network device?
Respuesta
  • a console connection
  • an AUX connection
  • a Telnet connection
  • an SSH connection

Pregunta 83

Pregunta
What function does pressing the Tab key have when entering a command in IOS?
Respuesta
  • It aborts the current command and returns to configuration mode.
  • It exits configuration mode and returns to user EXEC mode.
  • It moves the cursor to the beginning of the next line.
  • It completes the remainder of a partially typed word in a command.

Pregunta 84

Pregunta
What layer is responsible for routing messages through an internetwork in the TCP/IP model?
Respuesta
  • internet
  • transport
  • network access
  • session

Pregunta 85

Pregunta
Which statement accurately describes a TCP/IP encapsulation process when a PC is sending data to the network?
Respuesta
  • Data is sent from the internet layer to the network access layer.
  • Packets are sent from the network access layer to the transport layer.
  • Segments are sent from the transport layer to the internet layer.
  • Frames are sent from the network access layer to the internet layer.

Pregunta 86

Pregunta
What unique address is embedded in an Ethernet NIC and used for communication on an Ethernet network?
Respuesta
  • host address
  • IP address
  • MAC address
  • network address
  • k layer

Pregunta 87

Pregunta
Which procedure is used to reduce the effect of crosstalk in copper cables?
Respuesta
  • requiring proper grounding connections
  • twisting opposing circuit wire pairs together
  • wrapping the bundle of wires with metallic shielding
  • designing a cable infrastructure to avoid crosstalk interference
  • avoiding sharp bends during installation

Pregunta 88

Pregunta
During the encapsulation process, what occurs at the data link layer for a PC connected to an Ethernet network?
Respuesta
  • An IP address is added.
  • The logical address is added.
  • The physical address is added.
  • The process port number is added.

Pregunta 89

Pregunta
What are two characteristics of Ethernet MAC addresses? (Choose two.)
Respuesta
  • They are globally unique.
  • They are routable on the Internet.
  • They are expressed as 12 hexadecimal digits.
  • MAC addresses use a flexible hierarchical structure.
  • MAC addresses must be unique for both Ethernet and serial interfaces on a device.

Pregunta 90

Pregunta
If a device receives an Ethernet frame of 60 bytes, what will it do?
Respuesta
  • drop the frame
  • process the frame as it is
  • send an error message to the sending device
  • add random data bytes to make it 64 bytes long and then forward it

Pregunta 91

Pregunta
Under which two circumstances will a switch flood a frame out of every port except the port that the frame was received on? (Choose two.)
Respuesta
  • The frame has the broadcast address as the destination address.
  • The destination address is unknown to the switch.
  • The source address in the frame header is the broadcast address.
  • The source address in the frame is a multicast address.
  • The destination address in the frame is a known unicast address.

Pregunta 92

Pregunta
Which switching method has the lowest level of latency?
Respuesta
  • cut-through
  • store-and-forward
  • fragment-free
  • fast-forward

Pregunta 93

Pregunta
Which two commands can be used on a Windows host to display the routing table? (Choose two.)
Respuesta
  • netstat -s
  • route print
  • show ip route
  • netstat -r
  • tracert

Pregunta 94

Pregunta
Which two functions are primary functions of a router? (Choose two.)
Respuesta
  • packet forwarding
  • microsegmentation
  • domain name resolution
  • path selection
  • flow control

Pregunta 95

Pregunta
What is the binary representation of 0xCA?
Respuesta
  • 10111010
  • 11010101
  • 11001010
  • 11011010

Pregunta 96

Pregunta
At a minimum, which address is required on IPv6-enabled interfaces?
Respuesta
  • link-local
  • unique local
  • site local
  • global unicast

Pregunta 97

Pregunta
Which service provides dynamic global IPv6 addressing to end devices without using a server that keeps a record of available IPv6 addresses?
Respuesta
  • stateful DHCPv6
  • SLAAC
  • static IPv6 addressing
  • stateless DHCPv6

Pregunta 98

Pregunta
What is the purpose of the command ping ::1?
Respuesta
  • It tests the internal configuration of an IPv6 host.
  • It tests the broadcast capability of all hosts on the subnet.
  • It tests the multicast connectivity to all hosts on the subnet.
  • It tests the reachability of the default gateway for the network.

Pregunta 99

Pregunta
How many usable IP addresses are available on the 192.168.1.0/27 network?
Respuesta
  • 256
  • 254
  • 62
  • 30
  • 16
  • 32

Pregunta 100

Pregunta
What is the process of dividing a data stream into smaller pieces before transmission?
Respuesta
  • segmentation
  • encapsulation
  • encoding
  • flow control

Pregunta 101

Pregunta
When IPv4 addressing is manually configured on a web server, which property of the IPv4 configuration identifies the network and host portion for an IPv4 address?
Respuesta
  • DNS server address
  • subnet mask
  • default gateway
  • DHCP server address

Pregunta 102

Pregunta
Which two roles can a computer assume in a peer-to-peer network where a file is being shared between two computers? (Choose two.)
Respuesta
  • client
  • master
  • server
  • slave
  • transient

Pregunta 103

Pregunta
Which two protocols operate at the highest layer of the TCP/IP protocol stack? (Choose two.)
Respuesta
  • DNS
  • Ethernet
  • IP
  • POP
  • TCP
  • UDP

Pregunta 104

Pregunta
What is one difference between the client-server and peer-to-peer network models?
Respuesta
  • Only in the client-server model can file transfers occur.
  • Every device in a peer-to-peer network can function as a client or a server.
  • A peer-to-peer network transfers data faster than a transfer using a client-server network.
  • A data transfer that uses a device serving in a client role requires that a dedicated server be present.

Pregunta 105

Pregunta
What is the function of the HTTP GET message?
Respuesta
  • to request an HTML page from a web server
  • to send error information from a web server to a web client
  • to upload content to a web server from a web client
  • to retrieve client email from an email server using TCP port 110

Pregunta 106

Pregunta
Which networking model is being used when an author uploads one chapter document to a file server of a book publisher?
Respuesta
  • peer-to-peer
  • master-slave
  • client/server
  • point-to-point

Pregunta 107

Pregunta
What network service resolves the URL entered on a PC to the IP address of the destination server?
Respuesta
  • DNS
  • DHCP
  • FTP
  • SNMP

Pregunta 108

Pregunta
A network engineer is analyzing reports from a recently performed network baseline. Which situation would depict a possible latency issue?
Respuesta
  • a change in the bandwidth according to the show interfaces output
  • a next-hop timeout from a traceroute
  • an increase in host-to-host ping response times
  • a change in the amount of RAM according to the show version output

Pregunta 109

Pregunta
Which firewall feature is used to ensure that packets coming into a network are legitimate responses to requests initiated from internal hosts?
Respuesta
  • stateful packet inspection
  • URL filtering
  • application filtering
  • packet filtering

Pregunta 110

Pregunta
What is one indication that a Windows computer did not receive an IPv4 address from a DHCP server?
Respuesta
  • The computer cannot ping 127.0.0.1.
  • Windows displays a DHCP timeout message.
  • The computer receives an IP address that starts with 169.254
  • The computer cannot ping other devices on the same network with IP addresses in the 169.254.0.0/16 range.

Pregunta 111

Pregunta
Which command can an administrator issue on a Cisco router to send debug messages to the vty lines?
Respuesta
  • terminal monitor
  • logging console
  • logging buffered
  • logging synchronous

Pregunta 112

Pregunta
During data communications, a host may need to send a single message to a specific group of destination hosts simultaneously. This message is in the form of a [blank_start]Multicast[blank_end] message.
Respuesta
  • Multicast

Pregunta 113

Pregunta
A medium-sized business is researching available options for connecting to the Internet. The company is looking for a high speed option with dedicated, symmetric access. Which connection type should the company choose?
Respuesta
  • DSL
  • dialup
  • satellite
  • leased line
  • cable modem

Pregunta 114

Pregunta
What is the purpose of having a converged network?
Respuesta
  • to provide high speed connectivity to all end devices
  • to make sure that all types of data packets will be treated equally
  • to achieve fault tolerance and high availability of data network infrastructure devices
  • to reduce the cost of deploying and maintaining the communication infrastructure

Pregunta 115

Pregunta
What characteristic of a network enables it to quickly grow to support new users and applications without impacting the performance of the service being delivered to existing users?
Respuesta
  • reliability
  • scalability
  • quality of service
  • accessibility

Pregunta 116

Pregunta
After several configuration changes are made to a router, the copy running-configuration startup-configuration command is issued. Where will the changes be stored?
Respuesta
  • flash
  • ROM
  • NVRAM
  • RAM
  • the configuration register
  • a TFTP server

Pregunta 117

Pregunta
Refer to the exhibit. From global configuration mode, an administrator is attempting to create a message-of-the-day banner by using the command banner motd V Authorized access only! Violators will be prosecuted! V When users log in using Telnet, the banner does not appear correctly. What is the problem?
Image:
36489 (image/jpeg)
Respuesta
  • The banner message is too long.
  • The delimiting character appears in the banner message.
  • The symbol “!” signals the end of a banner message.
  • Message-of-the-day banners will only appear when a user logs in through the console port.

Pregunta 118

Pregunta
What are three characteristics of an SVI? (Choose three.)
Respuesta
  • It is designed as a security protocol to protect switch ports.
  • It is not associated with any physical interface on a switch.
  • It is a special interface that allows connectivity by different types of media.
  • It is required to allow connectivity by any device at any location.
  • It provides a means to remotely manage a switch.
  • It is associated with VLAN1 by default.

Pregunta 119

Pregunta
A technician configures a switch with these commands:SwitchA(config)# interface vlan 1 SwitchA(config-if)# ip address 192.168.1.1 255.255.255.0 SwitchA(config-if)# no shutdownWhat is the technician configuring?
Respuesta
  • Telnet access
  • SVI
  • password encryption
  • physical switchport access

Pregunta 120

Pregunta
In computer communication, what is the purpose of message encoding?
Respuesta
  • to convert information to the appropriate form for transmission
  • to interpret information
  • to break large messages into smaller frames
  • to negotiate correct timing for successful communication

Pregunta 121

Pregunta
What is a characteristic of multicast messages?
Respuesta
  • They are sent to a select group of hosts.
  • They must be acknowledged.
  • They are sent to a single destination.
  • They are sent to all hosts on a network.

Pregunta 122

Pregunta
A large corporation has modified its network to allow users to access network resources from their personal laptops and smart phones. Which networking trend does this describe?
Respuesta
  • bring your own device
  • video conferencing
  • online collaboration
  • cloud computing

Pregunta 123

Pregunta
A dedicated server is not needed when implementing a peer-to-peer network.
Respuesta
  • True
  • False

Pregunta 124

Pregunta
Which term refers to a network that provides secure access to the corporate offices by suppliers, customers and collaborators?
Respuesta
  • Internet
  • intranet
  • extranet
  • extendednet

Pregunta 125

Pregunta
What subnet mask is required to support 512 subnets on networks 172.28.0.0/16?
Respuesta
  • 255.255.240.0
  • 255.255.255.224
  • 255.255.255.240
  • 255.255.255.128
  • 255.255.252.0

Pregunta 126

Pregunta
A DHCP server is used to IP addresses dynamically to the hosts on a network. The address pool is configured with 10.29.244.0/25. There are 19 printers on this network that need to use reserve static IP addresses from the pool. How many IP address in the pool are left to be assign to other hosts?
Respuesta
  • 210
  • 60
  • 109
  • 107
  • 146

Pregunta 127

Pregunta
What is a function of the data link layer?
Respuesta
  • provides the formatting of data
  • provides for the exchange of data over a common local media
  • provides end-to-end delivery of data between hosts
  • provides delivery of data between two applications

Pregunta 128

Pregunta
Which communication tool allows real-time collaboration?
Respuesta
  • wiki
  • e-mail
  • weblog
  • instant messaging

Pregunta 129

Pregunta
A host is accessing a Web server on a remote network. Which three functions are performed by intermediary network devices during this conversation? (Choose three.)
Respuesta
  • regenerating data signals
  • acting as a client or a server
  • providing a channel over which messages travel
  • applying security settings to control the flow of data
  • notifying other devices when errors occur
  • serving as the source or destination of the messages

Pregunta 130

Pregunta
Refer to the exhibit. From which location did this router load the IOS?
Image:
I208382v1n1 208382 (image/png)
Respuesta
  • flash memory
  • NVRAM
  • RAM
  • ROM
  • a TFTP server

Pregunta 131

Pregunta
Refer to the exhibit. Which action will be successful?
Image:
2017 03 13 152652 (image/jpeg)
Respuesta
  • PC1 can send a ping to 192.168.1.1.
  • PC1 can send a ping to 192.168.1.254.
  • PC2 can send a ping to 192.168.1.1.
  • PC2 can send a ping to 192.168.1.254

Pregunta 132

Pregunta
Port numbers ranging from 0 to 1023 are considered to be [blank_start]Well Known[blank_end] ports.
Respuesta
  • Well Known

Pregunta 133

Pregunta
ISOC, IANA, EIA, and IEEE represent [blank_start]standards[blank_end] organizations which help to promote and maintain an open Internet.
Respuesta
  • standards

Pregunta 134

Pregunta
Refer to the exhibit. An administrator is trying to configure the switch but receives the error message that is displayed in the exhibit. What is the problem?
Image:
I208399v1n1 Question 1 (image/png)
Respuesta
  • The entire command, configure terminal, must be used.
  • The administrator is already in global configuration mode.
  • The administrator must first enter privileged EXEC mode before issuing the command.
  • The administrator must connect via the console port to access global configuration mode.

Pregunta 135

Pregunta
A company is expanding its business to other countries. All branch offices must remain connected to corporate headquarters at all times. Which network technology is required to support this requirement?
Respuesta
  • LAN
  • MAN
  • WAN
  • WLAN

Pregunta 136

Pregunta
A network administrator is upgrading a small business network to give high priority to real-time applications traffic. What two types of network services is the network administrator trying to accommodate? (Choose two.)
Respuesta
  • SNMP
  • instant messaging
  • voice
  • FTP
  • video

Pregunta 137

Pregunta
Which IPv4 address can be pinged to test the internal TCP/IP operation of a host?
Respuesta
  • 0.0.0.0
  • 0.0.0.1
  • 127.0.0.1
  • 192.168.1.1
  • 255.255.255.255

Pregunta 138

Pregunta
What three application layer protocols are part of the TCP/IP protocol suite? (Choose three.)
Respuesta
  • DHCP
  • DNS
  • FTP
  • NAT
  • PPP

Pregunta 139

Pregunta
Which two protocols function at the internet layer? (Choose two)
Respuesta
  • ARP
  • BOOTP
  • ICMP
  • IP
  • PPP

Pregunta 140

Pregunta
Which publicly available resources describe protocols, processes, and technologies for the Internet but do not give implementation details?
Respuesta
  • Request for Comments
  • IRTF research papers
  • protocol models
  • IEEE standards

Pregunta 141

Pregunta
Which address on a PC does not change, even if the PC is moved to a different network?
Respuesta
  • IP address
  • default gateway address
  • MAC address
  • logical address

Pregunta 142

Pregunta
What is the protocol that is used to discover a physical address from a known logical address and what message type does it use?
Respuesta
  • ARP, multicast
  • DNS, unicast
  • DNS, broadcast
  • ARP, broadcast
  • PING, multicast
  • PING, broadcast

Pregunta 143

Pregunta
What will happen if the default gateway address is incorrectly configured on a host?
Respuesta
  • The host cannot communicate with other hosts in the local network.
  • The switch will not forward packets initiated by the host.
  • The host will have to use ARP to determine the correct address of the default gateway.
  • The host cannot communicate with hosts in other networks.
  • A ping from the host to 127.0.0.1 would not be successful.

Pregunta 144

Pregunta
What is an important function of the physical layer of the OSI model?
Respuesta
  • It accepts frames from the physical media.
  • It encapsulates upper layer data into frames.
  • It defines the media access method performed by the hardware interface.
  • It encodes frames into electrical, optical, or radio wave signals.

Pregunta 145

Pregunta
Which two statements describe the characteristics of fiber-optic cabling? (Choose two.)
Respuesta
  • Fiber-optic cabling does not conduct electricity.
  • Fiber-optic cabling has high signal loss.
  • Fiber-optic cabling is primarily used as backbone cabling.
  • Multimode fiber-optic cabling carries signals from multiple sending devices.
  • Fiber-optic cabling uses LEDs for single-mode cab?les and laser technology for multimode cables.

Pregunta 146

Pregunta
What is contained in the trailer of a data-link frame?
Respuesta
  • logical address
  • physical address
  • data
  • error detection

Pregunta 147

Pregunta
Refer to the exhibit. A ping to PC3 is issued from PC0, PC1, and PC2 in this exact order. Which MAC addresses will be contained in the S1 MAC address table that is associated with the Fa0/1 port?
Image:
I208705v1n1 208705 (image/png)
Respuesta
  • just PC0 and PC1 MAC addresses
  • just the PC0 MAC address
  • PC0, PC1, and PC2 MAC addresses
  • just the PC1 MAC address
  • just the PC2 MAC address

Pregunta 148

Pregunta
How does a Layer 3 switch differ from a Layer 2 switch?
Respuesta
  • A Layer 3 switch supports VLANs, but a Layer 2 switch does not.
  • An IP address can be assigned to a physical port of a Layer 3 switch. However, this is not supported in Layer 2 switches.
  • A Layer 3 switch maintains an IP address table instead of a MAC address table.
  • A Layer 3 switch learns the MAC addresses that are associated with each of its ports. However, a Layer 2 switch does not.

Pregunta 149

Pregunta
What is the purpose of the routing process?
Respuesta
  • to encapsulate data that is used to communicate across a network
  • to select the paths that are used to direct traffic to destination networks
  • to convert a URL name into an IP address
  • to provide secure Internet file transfer
  • to forward traffic on the basis of MAC addresses

Pregunta 150

Pregunta
Which technology provides a solution to IPv4 address depletion by allowing multiple devices to share one public IP address?
Respuesta
  • ARP
  • DNS
  • NAT
  • SMB
  • DHCP
  • HTTP

Pregunta 151

Pregunta
Refer to the exhibit. Consider the IP address configuration shown from PC1. What is a description of the default gateway address?
Image:
I206397v1n2 206397 (image/png)
Respuesta
  • It is the IP address of the Router1 interface that connects the company to the Internet.
  • It is the IP address of the Router1 interface that connects the PC1 LAN to Router1.
  • It is the IP address of Switch1 that connects PC1 to other devices on the same LAN.
  • It is the IP address of the ISP network device located in the cloud.

Pregunta 152

Pregunta
Which of the following are primary functions of a router? (Choose two.)
Respuesta
  • packet switching
  • microsegmentation
  • domain name resolution
  • path selection
  • flow control

Pregunta 153

Pregunta
Which two statements correctly describe a router memory type and its contents? (Choose two.)
Respuesta
  • ROM is nonvolatile and contains basic diagnostic software.
  • FLASH is nonvolatile and contains a limited portion of the IOS​.
  • ROM is nonvolatile and stores the running IOS.
  • RAM is volatile and stores the IP routing table.
  • NVRAM is nonvolatile and stores other system files.

Pregunta 154

Pregunta
In which default order will a router search for startup configuration information?
Respuesta
  • NVRAM, RAM, TFTP
  • NVRAM, TFTP, setup mode
  • setup mode, NVRAM, TFTP
  • TFTP, ROM, NVRAM
  • flash, ROM, setup mode

Pregunta 155

Pregunta
What happens when part of an Internet VoIP transmission is not delivered to the destination?
Respuesta
  • A delivery failure message is sent to the source host.
  • The part of the VoIP transmission that was lost is re-sent.
  • The entire transmission is re-sent.
  • The transmission continues without the missing portion.

Pregunta 156

Pregunta
Which three IP addresses are private ? (Choose three.)
Respuesta
  • 10.172.168.1
  • 172.32.5.2
  • 192.167.10.10
  • 172.20.4.4
  • 192.168.5.254
  • 224.6.6.6

Pregunta 157

Pregunta
How many bits make up the single IPv6 hextet :10CD:?
Respuesta
  • 4
  • 8
  • 16
  • 32

Pregunta 158

Pregunta
What is the effect of configuring the ipv6 unicast-routing command on a router?
Respuesta
  • to assign the router to the all-nodes multicast group
  • to enable the router as an IPv6 router
  • to permit only unicast packets on the router
  • to prevent the router from joining the all-routers multicast group

Pregunta 159

Pregunta
Which group of IPv6 addresses cannot be allocated as a host source address?
Respuesta
  • FEC0::/10
  • FDFF::/7
  • FEBF::/10
  • FF00::/8

Pregunta 160

Pregunta
What is the purpose of ICMP messages?
Respuesta
  • to inform routers about network topology changes
  • to ensure the delivery of an IP packet
  • to provide feedback of IP packet transmissions
  • to monitor the process of a domain name to IP address resolution

Pregunta 161

Pregunta
Refer to the exhibit. A technician has configured a user workstation with the IP address and default subnet masks that are shown. Although the user can access all local LAN resources, the user cannot access any Internet sites by using either FQDN or IP addresses. Based upon the exhibit, what could account for this failure?
Image:
36983 (image/jpeg)
Respuesta
  • The DNS server addresses are incorrect.
  • The default gateway address in incorrect.
  • The wrong subnet mask was assigned to the workstation.
  • The workstation is not in the same network as the DNS servers.

Pregunta 162

Pregunta
A network administrator needs to monitor network traffic to and from servers in a data center. Which features of an IP addressing scheme should be applied to these devices?
Respuesta
  • random static addresses to improve security
  • addresses from different subnets for redundancy
  • predictable static IP addresses for easier identification
  • dynamic addresses to reduce the probability of duplicate addresses

Pregunta 163

Pregunta
Refer to the exhibit. Which IP addressing scheme should be changed?
Image:
I223577v1n1 207643 (image/png)
Respuesta
  • Site 1
  • Site 2
  • Site 3
  • Site 4

Pregunta 164

Pregunta
Which two notations are useable nibble boundaries when subnetting in IPv6? (Choose two.)
Respuesta
  • /62
  • /64
  • /66
  • /68
  • /70

Pregunta 165

Pregunta
A host PC has just booted and is attempting to lease an address through DHCP. Which two messages will the client typically broadcast on the network? (Choose two.)
Respuesta
  • DHCPDISCOVER
  • DHCPOFFER
  • DHCPREQUEST
  • DHCPACK
  • DHCPNACK

Pregunta 166

Pregunta
What is the purpose of the network security accounting function?
Respuesta
  • to require users to prove who they are
  • to determine which resources a user can access
  • to keep track of the actions of a user
  • to provide challenge and response questions

Pregunta 167

Pregunta
Refer to the exhibit. The network administrator enters these commands into the R1 router: R1# copy running-config tftp Address or name of remote host [ ]? When the router prompts for an address or remote host name, what IP address should the administrator enter at the prompt?
Image:
I224093v1n1 208760 (image/jpeg)
Respuesta
  • 192.168.9.254
  • 192.168.10.1
  • 192.168.10.2
  • 192.168.11.252
  • 192.168.11.254

Pregunta 168

Pregunta
What two preconfigured settings that affect security are found on most new wireless routers? (Choose two.)
Respuesta
  • broadcast SSID
  • MAC filtering enabled
  • WEP encryption enabled
  • PSK authentication required
  • default administrator password

Pregunta 169

Pregunta
Which type of wireless security generates dynamic encryption keys each time a client associates with an AP?
Respuesta
  • EAP
  • PSK
  • WEP
  • WPA

Pregunta 170

Pregunta
[blank_start]TFTP[blank_end] is a best-effort, connectionless application layer protocol that is used to transfer files.
Respuesta
  • TFTP

Pregunta 171

Pregunta
Which two components are necessary for a wireless client to be installed on a WLAN? (Choose two.)
Respuesta
  • media
  • wireless NIC
  • custom adapter
  • crossover cable
  • wireless bridge
  • wireless client software

Pregunta 172

Pregunta
Consider the following range of addresses: 2001:0DB8:BC15:00A0:0000:: 2001:0DB8:BC15:00A1:0000:: 2001:0DB8:BC15:00A2:0000:: … 2001:0DB8:BC15:00AF:0000:: The prefix-length for the range of addresses is [blank_start]/60[blank_end]
Respuesta
  • /60

Pregunta 173

Pregunta
A host is accessing an FTP server on a remote network. Which three functions are performed by intermediary network devices during this conversation? (Choose three.)
Respuesta
  • regenerating data signals
  • acting as a client or a server
  • providing a channel over which messages travel
  • applying security settings to control the flow of data
  • notifying other devices when errors occur
  • serving as the source or destination of the messages

Pregunta 174

Pregunta
When is a dial-up connection used to connect to an ISP?
Respuesta
  • when a cellular telephone provides the service
  • when a high-speed connection is provided over a cable TV network
  • when a satellite dish is used
  • when a regular telephone line is used

Pregunta 175

Pregunta
On a school network, students are surfing the web, searching the library database, and attending an audio conference with their sister school in Japan. If network traffic is prioritized with QoS, how will the traffic be classified from highest priority to lowest priority?
Respuesta
  • audio conference, database, HTTP
  • database, HTTP, audio conference
  • audio conference, HTTP, database
  • database, audio conference, HTTP

Pregunta 176

Pregunta
During normal operation, from which location do most Cisco routers run the IOS?
Respuesta
  • RAM
  • flash
  • NVRAM
  • disk drive

Pregunta 177

Pregunta
Which keys act as a hot key combination that is used to interrupt an IOS process?
Respuesta
  • Ctrl-Shift-X
  • Ctrl-Shift-6
  • Ctrl-Z
  • Ctrl-C

Pregunta 178

Pregunta
Refer to the exhibit. An administrator wants to change the name of a brand new switch, using the hostname command as shown. What prompt will display after the command is issued??
Image:
I223566v1n2 Myswitch B (image/png)
Respuesta
  • HR Switch(config)#?
  • Switch(config)#?
  • HRSwitch(config)#?
  • HR(config)#?
  • Switch#

Pregunta 179

Pregunta
A technician uses the ping 127.0.0.1 command. What is the technician testing?
Respuesta
  • the TCP/IP stack on a network host
  • connectivity between two adjacent Cisco devices
  • connectivity between a PC and the default gateway
  • connectivity between two PCs on the same network
  • physical connectivity of a particular PC and the network

Pregunta 180

Pregunta
What is the correct order for PDU encapsulation?
Respuesta
  • Frame Header, Network Header, Transport Header, Data, Frame Trailer
  • Network Header ,Transport Header,Frame Header, Data, Frame Trailer
  • Trasport Header, Network Header, Frame Header, Data, Frame Trailer
  • Transport Header, Frame Header, Network Header, Data, Frame Trailer

Pregunta 181

Pregunta
Which device should be used for enabling a host to communicate with another host on a different network?
Respuesta
  • switch
  • hub
  • router
  • host

Pregunta 182

Pregunta
A network technician is measuring the transfer of bits across the company backbone for a mission critical application. The technician notices that the network throughput appears lower than the bandwidth expected. Which three factors could influence the differences in throughput? (Choose three.)
Respuesta
  • the amount of traffic that is currently crossing the network
  • the sophistication of the encapsulation method applied to the data
  • the type of traffic that is crossing the network
  • the latency that is created by the number of network devices that the data is crossing
  • the bandwidth of the WAN connection to the Internet
  • the reliability of the gigabit Ethernet infrastructure of the backbone

Pregunta 183

Pregunta
Which characteristics describe fiber optic cable? (Choose two.)
Respuesta
  • It is not affected by EMI or RFI.
  • Each pair of cables is wrapped in metallic foil.
  • It combines the technique of cancellation, shielding and twisting to protect data.
  • It has a maximum speed of 100 Mbps.
  • It is the most expensive type of LAN cabling

Pregunta 184

Pregunta
What are two features of a physical, star network topology? (Choose two.)
Respuesta
  • It is straightforward to troubleshoot.
  • End devices are connected together by a bus.
  • It is easy to add and remove end devices.
  • All end devices are connected in a chain to each other.
  • Each end system is connected to its respective neighbor.

Pregunta 185

Pregunta
A frame is transmitted from one networking device to another. Why does the receiving device check the FCS field in the frame?
Respuesta
  • to determine the physical address of the sending device
  • to verify the network layer protocol information
  • to compare the interface media type between the sending and receiving ends
  • to check the frame for possible transmission errors
  • to verify that the frame destination matches the MAC address of the receiving device

Pregunta 186

Pregunta
What will a Layer 2 switch do when the destination MAC address of a received frame is not in the MAC table?
Respuesta
  • It initiates an ARP request.
  • It broadcasts the frame out of all ports on the switch.
  • It notifies the sending host that the frame cannot be delivered.
  • It forwards the frame out of all ports except for the port at which the frame was received.

Pregunta 187

Pregunta
Which parameter does the router use to choose the path to the destination when there are multiple routes available?
Respuesta
  • the lower metric value that is associated with the destination network
  • the lower gateway IP address to get to the destination network
  • the higher metric value that is associated with the destination network
  • the higher gateway IP address to get to the destination network

Pregunta 188

Pregunta
Which two statements describe the functions or characteristics of ROM in a router? (Choose two.)
Respuesta
  • stores routing tables
  • allows software to be updated without replacing pluggable chips on the motherboard
  • maintains instructions for POST diagnostics
  • holds ARP cache
  • stores bootstrap program

Pregunta 189

Pregunta
Which statement describes a characteristic of the Cisco router management ports?
Respuesta
  • A console port is used for remote management of the router.
  • A console port is not used for packet forwarding.
  • Serial and DSL interfaces are types of management ports.
  • Each Cisco router has a LED indicator to provide information about the status of the management ports.

Pregunta 190

Pregunta
What happens when part of an Internet radio transmission is not delivered to the destination?
Respuesta
  • A delivery failure message is sent to the source host.
  • The part of the radio transmission that was lost is re-sent.
  • The entire transmission is re-sent.
  • The transmission continues without the missing portion.

Pregunta 191

Pregunta
What types of addresses make up the majority of addresses within the /8 block IPv4 bit space?
Respuesta
  • private addresses
  • public addresses
  • multicast addresses
  • experimental addresses

Pregunta 192

Pregunta
Refer to the exhibit. What is the maximum TTL value that is used to reach the destination www.cisco.com??
Image:
I208918v1n1 208918 (image/png)
Respuesta
  • 11
  • 12
  • 13
  • 14

Pregunta 193

Pregunta
A company has a network address of 192.168.1.64 with a subnet mask of 255.255.255.192. The company wants to create two subnetworks that would contain 10 hosts and 18 hosts respectively. Which two networks would achieve that? (Choose two.)
Respuesta
  • 192.168.1.16/28
  • 192.168.1.64/27
  • 192.168.1.128/27
  • 192.168.1.96/28
  • 192.168.1.192/28

Pregunta 194

Pregunta
In a network that uses IPv4, what prefix would best fit a subnet containing 100 hosts?
Respuesta
  • /23
  • /24
  • /25
  • /26

Pregunta 195

Pregunta
Which protocol supports rapid delivery of streaming media?
Respuesta
  • Transmission Control Protocol
  • Real-Time Transport Protocol
  • Secure File Transfer Protocol
  • Video over Internet Protocol

Pregunta 196

Pregunta
Why would a network administrator use the tracert utility?
Respuesta
  • to determine the active TCP connections on a PC
  • to check information about a DNS name in the DNS server
  • to identify where a packet was lost or delayed on a network
  • to display the IP address, default gateway, and DNS server address for a PC

Pregunta 197

Pregunta
Refer to the exhibit. What is the significance of the asterisk (*) in the exhibited output?
Image:
I223517v1n1 Showfilesys (image/jpeg)
Respuesta
  • The asterisk shows which file system was used to boot the system.
  • The asterisk designates which file system is the default file system.
  • An asterisk indicates that the file system is bootable.
  • An asterisk designates that the file system has at least one file that uses that file system.

Pregunta 198

Pregunta
Which WLAN security protocol generates a new dynamic key each time a client establishes a connection with the AP?
Respuesta
  • EAP
  • PSK
  • WEP
  • WPA

Pregunta 199

Pregunta
Point-to-point communications where both devices can transmit and receive on the medium at the same time are known as [blank_start]full-duplex[blank_end]
Respuesta
  • full-duplex

Pregunta 200

Pregunta
A host is accessing a Telnet server on a remote network. Which three functions are performed by intermediary network devices during this conversation? (Choose three.)
Respuesta
  • regenerating data signals
  • acting as a client or a server
  • providing a channel over which messages travel
  • applying security settings to control the flow of data
  • notifying other devices when errors occur
  • serving as the source or destination of the messages
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