5648134
Pregunta 1
Pregunta
72.257.126.11 is a valid A class host address.
Respuesta
- True
- False
Pregunta 2
Pregunta
In CIDR, conventional network class distinctions do not exist.
Respuesta
- True
- False
Pregunta 3
Pregunta
Some software errors point to a physical connectivity problem.
Respuesta
- True
- False
Pregunta 4
Pregunta
Logical connectivity problems often prove more difficult to isolate and resolve than physical connectivity problems
Respuesta
- True
- False
Pregunta 5
Pregunta
193.255.126.255 is a valid C class host address.
Respuesta
- True
- False
Pregunta 6
Pregunta
In a star topology, a single connection failure will halt all traffic between all sites.
Respuesta
- True
- False
Pregunta 7
Pregunta
In data networks, the task of directing information efficiently to the correct destination is handled by connectivity devices, primarily switches and routers.
Respuesta
- True
- False
Pregunta 8
Pregunta
Standards assist in network design.
Respuesta
- True
- False
Pregunta 9
Pregunta
Not all Transport layer protocols are concerned with reliability.
Respuesta
- True
- False
Pregunta 10
Pregunta
Latency occurs when a signal traveling on one wire or cable infringes on the signal traveling over an adjacent wire or cable.
Respuesta
- True
- False
Pregunta 11
Pregunta
All protocols are routable.
Respuesta
- True
- False
Pregunta 12
Pregunta
The command used to view IP information on a Windows workstation is ipconfig.
Respuesta
- True
- False
Pregunta 13
Pregunta
Cut-through switches can detect corrupt packets.
Respuesta
- True
- False
Pregunta 14
Pregunta
Human errors, ignorance, and omissions cause more than half of all security breaches sustained by networks.
Respuesta
- True
- False
Pregunta 15
Pregunta
A physical topology ____.
Respuesta
-
a. specifies device types
-
b. depicts a network in broad scope
-
c. specifies connectivity methods
-
d. specifies addressing schemes
Pregunta 16
Pregunta
In which OSI model layer does TCP operate?
Respuesta
-
Physical
-
b. Transport
-
c. Network
-
d. Data Link
Pregunta 17
Pregunta
Transport layer protocols break large data units into ____.
Respuesta
-
PDUs
-
b. segments
-
c. frames
-
d. block IDs
Pregunta 18
Pregunta
____ is a utility that can verify that TCP/IP is installed, bound to the NIC, configured correctly, and communicating with the network.
Respuesta
-
ARP
-
b. PING
-
c. Telnet
-
d. FTP
Pregunta 19
Pregunta
On an Ethernet network, a(n) ____ is the portion of a network in which collisions occur if two nodes transmit data at the same time.
Respuesta
-
a. collision domain
-
b. broadcast domain
-
c. interference domain
-
d. duplicate domain
Pregunta 20
Pregunta
1000Base-SX has a maximum throughput of ____.
Respuesta
-
a. 1 Gbps
-
b. 10 Gbps
-
c. 100 Gbps
-
d. 1000 Gbps
Pregunta 21
Pregunta
The ____ gateway is the gateway that first interprets its outbound requests to other subnets, and then interprets its inbound requests from other subnets.
Respuesta
-
a. proxy
-
b. core
-
c. Internet
-
d. default
Pregunta 22
Pregunta
How is reliability achieved in TCP?
Respuesta
-
a. Routing
-
b. Sliding windows
-
c. Sequence numbers and acknowledgements
-
d. Port numbers
Pregunta 23
Pregunta
Within a classful addressing subnet mask, the ____ bits indicate that corresponding bits in an IPv4 address contain network information.
Respuesta
-
a. 0
-
b. 1
-
c. first eight
-
d. last eight
Pregunta 24
Pregunta
CIDR notation takes the form of the network ID followed by a(n) ____, followed by the number of bits that are used for the extended network prefix.
Respuesta
-
a. dash ( - )
-
b. underscore ( _ )
-
c. backward slash ( \ )
-
d. forward slash ( / )
Pregunta 25
Pregunta
A(n) ____ is a graphical representation of a network’s devices and connections.
Respuesta
-
a. Multi Router Traffic Grapher
-
b. network diagram
-
c. wiring schematic
-
d. event viewer
Pregunta 26
Pregunta
____ management refers to monitoring how well links and devices are keeping up with the demands placed on them.
Respuesta
-
a. Performance
-
b. Fault
-
c. Network
-
d. Configuration
Pregunta 27
Pregunta
28. ____ involves manipulating certain characteristics of packets, data streams, or connections to manage the type and amount of traffic traversing a network or interface at any moment.
Respuesta
-
a. Traffic monitoring
-
b. Traffic routing
-
c. Traffic polling
-
d. Traffic shaping
Pregunta 28
Pregunta
The most common type of caching is ____ caching.
Respuesta
-
a. online
-
b. Web
-
c. Internet
-
d. device
Pregunta 29
Pregunta
A ____ is a software-based tool that continually monitors network traffic from a server or workstation attached to the network.
Respuesta
-
a. network monitor
-
b. sniffer
-
c. protocol analyzer
-
d. multimeter
Pregunta 30
Pregunta
The ____ utility allows you to view a host’s routing table.
Respuesta
-
a. nbstat
-
b. pathping
-
c. nslookup
-
d. route
Pregunta 31
Pregunta
Which of the following is a valid IP public address for use by a host on a LAN?
Respuesta
-
a. 10.2.256.5
-
b. 200.0.0.1
-
c. 192.168.10.5
-
d. 127.0.0.1
Pregunta 32
Pregunta
The result from ANDing 11110101 with 10111100 is ____.
Respuesta
-
a. 11111101
-
b. 10111101
-
c. 10110100
-
d. 01001010
Pregunta 33
Pregunta
What is the default administrative distance of static routes?
Respuesta
-
a. 120
-
b. 0
-
c. 90
-
d. 1
Pregunta 34
Pregunta
What is an Autonomous System in the context of internetworking?
Respuesta
-
a. A system that functions independently without external intervention
-
b. A group of routers under a common administration
-
c. A group of routers that have routes to every member of the group
-
d. A group of routers that can be configured by simply changing the settings in any one member
Pregunta 35
Pregunta
What does a layer 2 switch do when it receives a broadcast frame from one of the hosts connected to it?
Respuesta
-
a. Forwards it to all the other hosts connected to the switch
-
b. Examines the TTL field in the header and if the value is not 0, forwards it to all the other hosts on the switch
-
c. Discards it
-
d. A and B
Pregunta 36
Pregunta
When would static NAT be used over dynamic NAT?
Respuesta
-
a. When there is only a single public IP address available
-
b. When a router does not support NAT
-
c. When a server requires a fixed Global IP address
-
d. To assign an IP address from an IP address pool
Pregunta 37
Pregunta
Because WAN connections require routers or other Layer 3 devices to connect locations, their links are not capable of carrying ____ protocols.
Respuesta
-
a. open
-
b. standard
-
c. routable
-
d. nonroutable
Pregunta 38
Pregunta
A(n) ____ is the place where a telephone company terminates lines and switches calls between different locations.
Respuesta
-
a. CO
-
b. EO
-
c. DO
-
d. TO
Pregunta 39
Pregunta
The portion of the PSTN that connects any residence or business to the nearest CO is known as the ____.
Respuesta
-
a. demarcation point
-
b. NIU (Network Interface Unit)
-
c. local loop
-
d. central office
Pregunta 40
Pregunta
Repeaters operate in the ____ layer of the OSI model.
Respuesta
-
a. Physical
-
b. Network
-
c. Transport
-
d. Session
Pregunta 41
Pregunta
A ____ can interpret physical addressing information.
Respuesta
-
a. repeater
-
b. tranciever
-
c. hub
-
d. bridge
Pregunta 42
Pregunta
Switches can create ____ by grouping a number of ports into a broadcast domain.
Respuesta
-
a. trunks
-
b. spanning trees
-
c. gateways
-
d. VLANs
Pregunta 43
Pregunta
____ routing is a technique in which a network administrator programs a router to use specific paths between nodes.
Respuesta
-
a. Static
-
b. Dynamic
-
c. Best path
-
d. Link-state
Pregunta 44
Pregunta
A complex combination of topologies is known as a ____ topology.
Respuesta
-
a. mixed
-
b. hybrid
-
c. compound
-
d. mulitpart
Pregunta 45
Pregunta
The most common logical topologies are ____ and ring.
Respuesta
-
a. bus
-
b. star
-
c. wired
-
d. hybrid
Pregunta 46
Pregunta
Within Ethernet frame types, the ____ signals to the receiving node that data is incoming and indicates when the data flow is about to begin.
Respuesta
-
a. FCS
-
b. header
-
c. preamble
-
d. frame
Pregunta 47
Pregunta
In a ____ attack, a person redirects or captures secure transmissions as they occur.
Respuesta
-
a. denial-of service
-
b. man-in-the-middle
-
c. war driving
-
d. phishing
Pregunta 48
Pregunta
____ software searches a node for open ports.
Respuesta
-
a. Phishing
-
b. Sniffing
-
c. Authentication
-
d. Port scanner
Pregunta 49
Pregunta
A ____ main function is to examine packets and determine where to direct them based on their Network layer addressing information.
Respuesta
-
a. switch’s
-
b. gateway’s
-
c. router’s
-
d. proxy server’s
Pregunta 50
Pregunta
____ attack occurs when a hacker tries numerous possible character combinations to find the key that will decrypt encrypted data.
Respuesta
-
a. flashing
-
b. denial-of-service
-
c. dictionary
-
d. brute force
Pregunta 51
Pregunta
The combination of a public key and a private key is known as a ____.
Respuesta
-
a. key lock
-
b. key frame
-
c. key pair
-
d. key set
Pregunta 52
Pregunta
RADIUS and TACACS belong to a category of protocols known as AAA (____).
Respuesta
-
a. access, authorization, and accounting
-
b. authentication, authorization, and accounting
-
c. authentication, authorization, and authority
-
d. authentication, authorization, and access
Pregunta 53
Pregunta
Standards define the ____ performance of a product or service.
Respuesta
-
a. ideal
-
b. most acceptable
-
c. minimum acceptable
-
d. maximum acceptable
Pregunta 54
Pregunta
In which OSI model layer(s) do NICs operate?
Respuesta
-
a. Physical
-
b. Network and Physical
-
c. Data Link
-
d. Physical and Data Link
Pregunta 55
Pregunta
A(n) ____ number is the address on a host where an application makes itself available to incoming or outgoing data.
Respuesta
-
a. port
-
b. source
-
c. destination
-
d. sequence
Pregunta 56
Pregunta
The protocol that enables TCP/IP to internetwork - that is, to traverse more than one LAN segment and more than one type of network through a router is ____.
Respuesta
-
a. TCP
-
b. ICMP
-
c. UDP
-
d. IP
Pregunta 57
Pregunta
In IPv6, each address contains a(n) ____, or a variable-length field at the beginning of the address that indicates what type of address it is.
Respuesta
-
a. Variable Prefix
-
b. Address Prefix
-
c. Format Prefix
-
d. Field Prefix
Pregunta 58
Pregunta
In IPv4 addressing, a node with an IP address of 128.64.88.20 belongs to a Class ____ network.
Respuesta
-
a. A
-
b. B
-
c. C
-
d. D
Pregunta 59
Pregunta
Which of the following best describes the definition of administrative distance?
Respuesta
-
a. Measure of the trustworthiness of the source of a route update
-
b. The number of hops to a destination node recorded in the routing table
-
c. The maximum number of hops for a routing protocol which is used to set the TTL value in an IP packet
-
d. Distance to the closest network administrator
Pregunta 60
Pregunta
Which of the following statements is true regarding CSMA/CD after a collision has occurred?
Respuesta
-
a. Each device waits for a random backoff period before attempting to retransmit
-
b. Both stations stop transmitting immediately
-
c. The devices involved in the collision have priority to transmit data
-
d. The device with the highest priority will attempt to retransmit first
Pregunta 61
Pregunta
The decimal number 782 converted to binary is
Respuesta
-
a. 1010001000
-
b. 10000000110
-
c. 11100011100
-
d. 1100001110
Pregunta 62
Pregunta
64. When signals may travel in both directions over a medium but only in one direction at a time, the transmission is considered ____.
Respuesta
-
a. simplex
-
b. multiplex
-
c. half-duplex
-
d. full-duplex
Pregunta 63
Pregunta
Which network model ensures that no computer on the network has more authority than another?
Respuesta
-
a. client/server
-
b. stand alone
-
c. peer-to-peer
-
d. distributed
Pregunta 64
Pregunta
____ networks are the most popular type of network for medium- and large-scale organizations.
Respuesta
-
a. Client/server
-
b. Peer-to-peer
-
c. Stand-alone
-
d. Stationary
Pregunta 65
Pregunta
A ____ network is confined to a relatively small space.
Respuesta
-
a. NAN
-
b. MAN
-
c. WAN
-
d. LAN
Pregunta 66
Pregunta
Which network topology is the most common?
Respuesta
-
a. ring
-
b. star
-
c. hybrid
-
d. Ethernet
Pregunta 67
Pregunta
Which OSI model layer initiates the flow of information?
Respuesta
-
a. Physical
-
b. Session
-
c. Application
-
d. Presentation
Pregunta 68
Pregunta
Which OSI model layer manages data encryption?
Respuesta
-
a. Physical
-
b. Session
-
c. Application
-
d. Presentation
Pregunta 69
Pregunta
Which type of protocol is useful when data must be transferred quickly?
Respuesta
-
a. connection-oriented
-
b. connectionless
-
c. TCP
-
d. IP
Pregunta 70
Pregunta
____ is the process of reconstructing segmented data.
Respuesta
-
a. Reassembly
-
b. Reengineering
-
c. Resegmenting
-
d. Realigning
Pregunta 71
Pregunta
The process of determining the best path from Point A on one network to Point B on another is known as ____.
Respuesta
-
a. mapping
-
b. enhancing
-
c. reconfiguring
-
d. routing
Pregunta 72
Pregunta
In which OSI model layer does IP operate?
Respuesta
-
a. Physical
-
b. Transport
-
c. Network
-
d. Data Link
Pregunta 73
Pregunta
Which Data Link sublayer manages flow control?
Respuesta
-
a. LLC
-
b. MAC
-
c. Management layer
-
d. Addressing layer
Pregunta 74
Pregunta
Which Data Link sublayer manages access to the physical medium?
Respuesta
-
a. LLC
-
b. MAC
-
c. Management layer
-
d. Addressing layer
Pregunta 75
Pregunta
When signals are free to travel in both directions over a medium simultaneously, the transmission is considered ____.
Respuesta
-
a. simplex
-
b. multiplex
-
c. half-duplex
-
d. full-duplex
Pregunta 76
Pregunta
When signals may travel in only one direction over a medium, the transmission is considered ____.
Respuesta
-
a. simplex
-
b. multiplex
-
c. half-duplex
-
d. full-duplex
Pregunta 77
Pregunta
The most significant factor in choosing a transmission method is its ____.
Respuesta
-
a. noise
-
b. attenuation
-
c. throughput
-
d. latency
Pregunta 78
Pregunta
The more twists per foot in a pair of wires, the more resistant the pair will be to ____.
Respuesta
-
a. throughput
-
b. attenuation
-
c. cross talk
-
d. latency
Pregunta 79
Pregunta
TCP is a(n) ____ protocol.
Respuesta
-
a. open-ended
-
b. indiscriminating
-
c. connection-oriented
-
d. connectionless
Pregunta 80
Pregunta
____ is more efficient than TCP for carrying messages that fit within one data packet.
Respuesta
-
a. IP
-
b. UDP
-
c. ICMP
-
d. IGMP
Pregunta 81
Pregunta
In the TCP/IP protocol suite, ____ is the core protocol responsible for logical addressing.
Respuesta
-
a. TCP
-
b. UDP
-
c. IP
-
d. ARP
Pregunta 82
Pregunta
In IPv4 addressing, each public IP address is a unique ____ number.
Respuesta
-
a. 12-bit
-
b. 32-bit
-
c. 64-bit
-
d. 128-bit
Pregunta 83
Pregunta
In IPv4 addressing, a node with an IP address of 168.34.88.29 belongs to a Class ____ network.
Respuesta
-
a. A
-
b. B
-
c. C
-
d. D
Pregunta 84
Pregunta
In IPv4 addressing, an IP address whose first octet is in the range of 192–223 belongs to a Class ____ network.
Respuesta
-
a. A
-
b. B
-
c. C
-
d. D
Pregunta 85
Pregunta
The default subnet mask for a Class B network is ____.
Respuesta
-
a. 255.0.0.0
-
b. 255.255.0.0
-
c. 255.255.255.0
-
d. 255.255.255.255
Pregunta 86
Pregunta
A(n) ____ address represents any one interface from a group of interfaces, any one of which can accept a transmission.
Respuesta
-
a. anycast
-
b. unicast
-
c. multicast
-
d. singlecast
Pregunta 87
Pregunta
All Ethernet networks, independent of their speed or frame type, use an access method called ____.
Respuesta
-
a. CSMA
-
b. CSMA/DC
-
c. CSAM/CD
-
d. CSMA/CD
Pregunta 88
Pregunta
A ____ occurs when two transmissions interfere with each other.
Respuesta
-
a. jam
-
b. collision
-
c. carrier sense
-
d. multiple access event
Pregunta 89
Pregunta
Together, the FCS and the header make up the ____-byte “frame” for the data.
Respuesta
-
a. 15
-
b. 18
-
c. 21
-
d. 24
Pregunta 90
Pregunta
In addition to viewing its LEDs and using a loopback plug to test a NIC’s functionality, you can also check a NIC’s connectivity with ____.
Respuesta
-
a. simple commands
-
b. special clients
-
c. special switches
-
d. special software
Pregunta 91
Pregunta
Traditional switches operate at the ____ layer of the OSI model.
Respuesta
-
a. Physical
-
b. Data link
-
c. Network
-
d. Session
Pregunta 92
Pregunta
____ are combinations of networking hardware and software that connect two dissimilar kinds of networks.
Respuesta
-
a. Routers
-
b. Switches
-
c. Gateways
-
d. Broadcast domains
Pregunta 93
Pregunta
The ____ encompasses the entire telephone system, from the wires that enter homes and businesses to the network centers that connect different regions of a country.
Respuesta
-
a. SLIP
-
b. POTS
-
c. PPP
-
d. PSTN
Pregunta 94
Pregunta
____ means that a telephone company connects residential users to its network with fiber-optic cable.
Respuesta
-
a. OLT
-
b. FITL
-
c. PON
-
d. FITH
Pregunta 95
Pregunta
A class ____ network class is reserved for special purposes.
Respuesta
-
a. A
-
b. B
-
c. C
-
d. D
Pregunta 96
Pregunta
In classful addressing, the Class B IPv4 address network ID is located in the ____.
Respuesta
-
a. last 8 bits
-
b. last 16 bits
-
c. first 8 bits
-
d. first 16 bits
Pregunta 97
Pregunta
In classful addressing, Class C IPv4 address host information is located in the ____.
Respuesta
-
a. last 8 bits
-
b. last 16 bits
-
c. first 8 bits
-
d. first 16 bits
Pregunta 98
Pregunta
Within a classful addressing, ____ is the default subnet mask for a Class C address.
Respuesta
-
a. 255.255.255.255
-
b. 255.255.255.0
-
c. 255.255.0.0
-
d. 255.0.0.0
Pregunta 99
Pregunta
The result from ANDing 11001111 with 10010001 is ____.
Respuesta
-
a. 11001111
-
b. 10010001
-
c. 10000001
-
d. 00000001
Pregunta 100
Pregunta
____ is a social engineering practice in which a person attempts to glean access or authentication information by posing as someone who needs that information.
Respuesta
-
a. Cracking
-
b. Hacking
-
c. War driving
-
d. Phishing
Pregunta 101
Pregunta
A ____ attack occurs when a system becomes unable to function because it has inundated with requests for services and can’t respond to any of them.
Respuesta
-
a. flashing
-
b. denial-of-service
-
c. war driving
-
d. phishing
Pregunta 102
Pregunta
A ____ firewall is a router (or a computer installed with software that enables it to act as a router) that examines the header of every packet of data it receives to determine whether that type of packet is authorized to continue to its destination.
Respuesta
-
a. packet-filtering
-
b. gateway
-
c. proxy
-
d. selective
Pregunta 103
Pregunta
An administrator should take the time to troubleshoot all network problems correctly by asking specific questions designed to identify the problem ____.
Respuesta
-
a. intensity
-
b. background
-
c. scope
-
d. focus
Pregunta 104
Pregunta
To take advantage of network monitoring and analyzing tools, the network adapter installed in the machine running the software must support ____ mode.
Respuesta
-
a. open
-
b. static
-
c. promiscuous
-
d. continuous
Pregunta 105
Pregunta
____ are frames that are not actually data frames, but aberrations caused by a device misinterpreting stray voltage on the wire.
Respuesta
-
a. Jabbers
-
b. Ghosts
-
c. Giants
-
d. Runts
Pregunta 106
Pregunta
A ____ usually results from a bad NIC.
Respuesta
-
a. jabber
-
b. ghost
-
c. giant
-
d. runt
Pregunta 107
Pregunta
A ____ can generate traffic in an attempt to reproduce a network problem and monitor multiple network segments simultaneously
Respuesta
-
. a. multimeter
-
b. cable performance tester
-
c. network monitor
-
d. protocol analyzer
Pregunta 108
Pregunta
110. Which of the following is a valid IP address for use by a host on a LAN?
Respuesta
-
a. 10.2.257.5
-
b. 127.0.0.1
-
c. 192.168.10.5
-
d. 227.125.5.25
Pregunta 109
Pregunta
Which of the following is a valid IP address for use by a host on a LAN?
Respuesta
-
a. 10.256.255.5
-
b. 127.0.0.1
-
c. 227.125.5.25
-
d. None of the above
¿Quieres crear tus propios Tests gratis con GoConqr? Más información.