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ICDN1 Networking Fundamentals

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Part 1 Review
ineedchris
Quiz por ineedchris, atualizado more than 1 year ago
ineedchris
Criado por ineedchris quase 10 anos atrás
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Resumo de Recurso

Questão 1

Questão
The process of HTTP asking TCP to send some data and making sure that it is received correctly is an example of what?
Responda
  • Same-layer interaction
  • Adjacent-layer interaction
  • OSI model
  • All of these answers are correct.

Questão 2

Questão
The process of TCP on one computer marking a TCP segment as segment 1, and the receiving computer then acknowledging the receipt of TCP segment 1 is an example of what?
Responda
  • Data encapsulation
  • Same-layer interaction
  • Adjacent-layer interaction
  • OSI model
  • All of these answers are correct.

Questão 3

Questão
The process of a web server adding a TCP header to the contents of a web page, followed by adding an IP header and then adding a data link header and trailer is an example of what?
Responda
  • Data encapsulation
  • Same-layer interaction
  • OSI model
  • All of these answers are correct.

Questão 4

Questão
Which of the following terms is used specifically to identify the entity created when encapsulating data inside data link layer headers and trailers?
Responda
  • Data
  • Chunk
  • Segment
  • Frame
  • Packet

Questão 5

Questão
Which OSI layer defines the functions of logical network-wide addressing and routing?
Responda
  • Layer 1
  • Layer 2
  • Layer 3
  • Layer 4
  • Layer 5,6, or 7

Questão 6

Questão
Which OSI layer defines the standards for cabling and connectors?
Responda
  • Layer 1
  • Layer 2
  • Layer 3
  • Layer 4
  • Layer 5, 6, or 7

Questão 7

Questão
Which of the following terms are not valid terms for the names of the seven OSI layers? (Choose two answers.)
Responda
  • Application
  • Data Link
  • Transmission
  • Presentation
  • Internet
  • Session

Questão 8

Questão
Which of the following protocols are examples of TCP/IP data link layer protocols? (Choose two answers.)
Responda
  • Ethernet
  • HTTP
  • IP
  • UDP
  • SMTP
  • TCP
  • PPP

Questão 9

Questão
In the LAN for a small office, some user devices connect to the LAN using a cable, while others connect using wireless technology (and no cable). Which of the following is true regarding the use of Ethernet in this LAN?
Responda
  • Only the devices that use cables are using Ethernet.
  • Only the devices that use wireless are using Ethernet.
  • Both the devices using cables and those using wireless are using Ethernet.
  • None of the devices are using Ethernet.

Questão 10

Questão
Which of the following Ethernet standards defines Gigabit Ethernet over UTP cabling?
Responda
  • 10BASE-T
  • 100BASE-T
  • 1000BASE-T
  • None of the other answers is correct.

Questão 11

Questão
Which of the following is true about Ethernet crossover cables for Fast Ethernet?
Responda
  • Pins 1 and 2 are reversed on the other end of the cable.
  • Pins 1 and 2 on one end of the cable connect to pins 3 and 6 on the other end of the cable.
  • Pins 1 and 2 on one end of the cable connect to pins 3 and 4 on the other end of the cable.
  • The cable can be up to 1000 meters long to cross over between buildings.
  • None of the other answers is correct.

Questão 12

Questão
Each answer lists two types of devices used in a 100BASE-T network. If these devices were connected with UTP Ethernet cables, which pairs of devices would require a straight- through cable? (Choose three answers.)
Responda
  • PC and router
  • PC and switch
  • Hub and switch
  • Router and hub
  • Wireless access point (Ethernet port) and switch

Questão 13

Questão
Which of the following is true about the CSMA/CD algorithm?
Responda
  • The algorithm never allows collisions to occur.
  • Collisions can happen, but the algorithm defines how the computers should notice a collision and how to recover.
  • The algorithm works with only two devices on the same Ethernet.
  • None of the other answers is correct.

Questão 14

Questão
Which of the following are true about the format of Ethernet addresses? (Choose three answers.)
Responda
  • Each manufacturer puts a unique OUI code into the first 2 bytes of the address.
  • Each manufacturer puts a unique OUI code into the first 3 bytes of the address.
  • Each manufacturer puts a unique OUI code into the first half of the address.
  • The part of the address that holds this manufacturer’s code is called the MAC.
  • The part of the address that holds this manufacturer’s code is called the OUI.
  • The part of the address that holds this manufacturer’s code has no specific name.

Questão 15

Questão
Which of the following terms describe Ethernet addresses that can be used to send one frame that is delivered to multiple devices on the LAN? (Choose two answers.)
Responda
  • Burned-in address
  • Unicast address
  • Broadcast address
  • Multicast address

Questão 16

Questão
Which of the following best describes the main function of OSI Layer 1 as used in WANs?
Responda
  • Framing
  • Delivery of bits from one device to another
  • Addressing
  • Error detection

Questão 17

Questão
In the cabling for a leased line, which of the following typically connects to a four-wire line provided by a telco?
Responda
  • Router serial interface without internal CSU/DSU
  • CSU/DSU
  • Router serial interface with internal transceiver
  • Switch serial interface

Questão 18

Questão
Which of the following is an accurate speed at which a leased line can operate in the United States?
Responda
  • 100 Mbps
  • 100 Kbps
  • 256 Kbps
  • 6.4 Mbps

Questão 19

Questão
Which of the following fields in the HDLC header used by Cisco routers does Cisco add, beyond the ISO standard HDLC?
Responda
  • Flag
  • Type
  • Address
  • FCS

Questão 20

Questão
Two routers, R1 and R2, connect using an Ethernet over MPLS service. The service pro- vides point-to-point service between these two routers only, as a Layer 2 Ethernet service. Which of the following are the most likely to be true about this WAN? (Choose two answers.)
Responda
  • R1 will connect to a physical Ethernet link, with the other end of the cable connected to R2.
  • R1 will connect to a physical Ethernet link, with the other end of the cable connected to a device at the WAN service provider point of presence.
  • R1 will forward data link frames to R2 using an HDLC header/trailer.
  • R1 will forward data link frames to R2 using an Ethernet header/trailer.

Questão 21

Questão
Which of the following Internet access technologies, used to connect a site to an ISP, offers asymmetric speeds? (Choose two answers.)
Responda
  • Leased lines
  • DSL
  • Cable Internet
  • BGP

Questão 22

Questão
Fred has just added DSL service at his home, with a separate DSL modem and consumer- grade router with four Ethernet ports. Fred wants to use the same old phone he was using before the installation of DSL. Which is most likely true about the phone cabling and phone used with his new DSL installation?
Responda
  • He uses the old phone, cabled to one of the router/switch device’s Ethernet ports.
  • He uses the old phone, cabled to the DSL modem’s ports.
  • He uses the old phone, cabled to an existing telephone port, and not to any new device.
  • The old phone must be replaced with a digital phone.

Questão 23

Questão
Which of the following are functions of OSI Layer 3 protocols? (Choose two answers.)
Responda
  • Logical addressing
  • Physical addressing
  • Path selection
  • Arbitration
  • Error recovery

Questão 24

Questão
Imagine that PC1 needs to send some data to PC2, and PC1 and PC2 are separated by several routers. Both PC1 and PC2 sit on different Ethernet LANs. What are the largest entities (in size) that make it from PC1 to PC2? (Choose two answers.)
Responda
  • Frame
  • Segment
  • Packet
  • L5 PDU
  • L3 PDU
  • L1 PDU

Questão 25

Questão
Which of the following is a valid Class C IP address that can be assigned to a host?
Responda
  • 1.1.1.1
  • 200.1.1.1
  • 128.128.128.128
  • 224.1.1.1
  • 223.223.223.255

Questão 26

Questão
What is the assignable range of values for the first octet for Class A IP networks?
Responda
  • 0 to 127
  • 0 to 126
  • 1 to 127
  • 1 to 126
  • 128 to 191
  • 128 to 192

Questão 27

Questão
PC1 and PC2 are on two different Ethernet LANs that are separated by an IP router. PC1’s IP address is 10.1.1.1, and no subnetting is used. Which of the following addresses could be used for PC2? (Choose two answers.)
Responda
  • 10.1.1.2
  • 10.2.2.2
  • 10.200.200.1
  • 9.1.1.1
  • 225.1.1.1
  • 1.1.1.1

Questão 28

Questão
Imagine a network with two routers that are connected with a point-to-point HDLC serial link. Each router has an Ethernet, with PC1 sharing the Ethernet with Router1 and PC2 sharing the Ethernet with Router2. When PC1 sends data to PC2, which of the following is true?
Responda
  • Destination MAC address
  • Source MAC address
  • Destination IP address
  • Source IP address
  • Destination MAC and IP address

Questão 29

Questão
Which of the following are true about a LAN-connected TCP/IP host and its IP routing (forwarding) choices? (Choose two answers.)
Responda
  • The host always sends packets to its default gateway.
  • The host sends packets to its default gateway if the destination IP address is in a different class of IP network than the host.
  • The host sends packets to its default gateway if the destination IP address is in a different subnet than the host.
  • The host sends packets to its default gateway if the destination IP address is in the same subnet as the host.

Questão 30

Questão
Which of the following are functions of a routing protocol? (Choose two answers.)
Responda
  • Advertising known routes to neighboring routers
  • Learning routes for subnets directly connected to the router
  • Learning routes, and putting those routes into the routing table, for routes advertised to the router by its neighboring routers
  • Forwarding IP packets based on a packet’s destination IP address

Questão 31

Questão
A company implements a TCP/IP network, with PC1 sitting on an Ethernet LAN. Which of the following protocols and features requires PC1 to learn information from some other server device?
Responda
  • ARP
  • Ping
  • DNS
  • None of the other answers are correct

Questão 32

Questão
Which of the following is not a feature of a protocol that is considered to match OSI Layer 4?
Responda
  • Error recovery
  • Flow control
  • Segmenting of application data
  • Conversion from binary to ASCII

Questão 33

Questão
Which of the following header fields identify which TCP/IP application gets data received by the computer? (Choose two answers.)
Responda
  • Ethernet Type
  • SNAP Protocol Type
  • IP Protocol
  • TCP Port Number
  • UDP Port Number

Questão 34

Questão
Which of the following are typical functions of TCP? (Choose four answers.)
Responda
  • Flow Control (windowing)
  • Error recovery
  • Multiplexing using port numbers
  • Routing
  • Encryption
  • Ordered data transfer

Questão 35

Questão
Which of the following functions is performed by both TCP and UDP?
Responda
  • Windowing
  • Error recovery
  • Multiplexing using port numbers
  • Routing
  • Encryption
  • Ordered data transfer

Questão 36

Questão
What do you call data that includes the Layer 4 protocol header, and data given to Layer 4 by the upper layers, not including any headers and trailers from Layers 1 to 3? (Choose two answers.)
Responda
  • L3PDU
  • Chunk
  • Segment
  • Packet
  • Frame
  • L4PDU

Questão 37

Questão
In the URL http://www.certskills.com/ICND1, which part identifies the web server?
Responda
  • http
  • www.certskills.com
  • certskills.com
  • http://www.certskills.com
  • The file name.html includes the host name.

Questão 38

Questão
When comparing VoIP with an HTTP-based mission-critical business application, which of the following statements are accurate about the quality of service needed from the net- work? (Choose two answers.)
Responda
  • VoIP needs better (lower) packet loss.
  • HTTP needs less bandwidth.
  • HTTP needs better (lower) jitter.
  • VoIP needs better (lower) delay.

Questão 39

Questão
Which of the following protocols are examples of TCP/IP transport layer protocols? (Choose two answers.)
Responda
  • Ethernet
  • HTTP
  • IP
  • UDP
  • SMTP
  • TCP

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