CCNA-Questions-and-Answers.pdf

Chapter 2 Correct Answers:

1. What are the key functions of encapsulation? (Choose three.)

allows modification of the original data before transmission

identifies pieces of data as part of the same communication

enables consistent network paths for communication

ensures that data pieces can be directed to the correct receiving end device

enables the reassembly of complete messages

tracks delay between end devices

2. What is a primary function of the trailer information added by the data link layer encapsulation?

supports error detection

ensures ordered arrival of data

provides delivery to correct destination

identifies the devices on the local network

assists intermediary devices with processing and path selection

3. Which two layers of the OSI model have the same functions as the TCP/IP model Network Access Layer? (Choose two.)

Network

Transport

Physical

Data Link

Session

4. Which three statements best describe a Local Area Network (LAN)? (Choose three.)

A LAN is usually in a single geographical area.

The network is administered by a single organization.

The connection between segments in the LAN is usually through a leased connection.

The security and access control of the network are controlled by a service provider.

A LAN provides network services and access to applications for users within a common organization.

Each end of the network is generally connected to a Telecommunication Service Provider (TSP).

5. Refer to the exhibit. Which networking term describes the data interleaving process represented in the graphic?

piping

PDU

streaming

multiplexing

encapsulation

6. What is the primary purpose of Layer 4 port assignment?

to identify devices on the local media

to identify the hops between source and destination

to identify to the intermediary devices the best path through the network

to identify the source and destination end devices that are communicating

to identify the processes or services that are communicating within the end devices

7. What can be identified by examining the network layer header?

the destination device on the local media

the destination host address

the bits that will be transferred over the media

the source application or process creating the data

8. What is the purpose of the TCP/IP Network Access layer?

path determination and packet switching

data representation, encoding, and control

reliability, flow control, and error detection

detailing the components that make up the physical link and how to access it

the division of segments into packets

9. Which layer encapsulates the segment into packets?

physical

data link

network

transport

10. Select the statements that are correct concerning network protocols. (Choose three.)

define the structure of layer specific PDU's

dictate how to accomplish layer functions

outline the functions necessary for communications between layers

limit hardware compatibility

require layer dependent encapsulations

eliminate standardization among vendors

11. What is a PDU?

corruption of a frame during transmission

data reassembled at the destination

retransmitted packets due to lost communication

a layer specific encapsulation

12. Refer to the exhibit. "Cell A" at IP address 10.0.0.34 has established an IP session with "IP Phone 1" at IP address 172.16.1.103. Based

upon the graphic, which device type best describes the function of wireless device "Cell A?"

the destination device

an end device

an intermediate device

a media device

13. Refer to the exhibit. Which term correctly identifies the device type that is included in the area B?

source

end

transfer

intermediary

14. What device is considered an intermediary device?

file server

IP phone

laptop

printer

switch

15. Which characteristic correctly refers to end devices in a network?

manage data flows

originate data flow

retime and retransmit data signals

determine pathways for data

16. Refer to the exhibit. Which set of devices contains only end devices?

A, C, D

B, E, G, H

C, D, G, H, I, J

D, E, F, H, I, J

E, F, H, I, J

17. During the encapsulation process, what occurs at the data link layer?

No address is added.

The logical address is added.

The physical address is added.

The process port number is added.

18. Refer to the exhibit. Which three labels correctly identify the network types for the network segments that are shown? (Choose three.)

Network A -- WAN

Network B -- WAN

Network C -- LAN

Network B -- MAN

Network C -- WAN

Network A -- LAN

19. What is the proper order of the layers of the OSI model from the highest layer to the lowest layer?

physical, network, application, data link, presentation, session, transport

application, physical, session, transport, network, data link, presentation

application, presentation, physical, session, data link, transport, network

application, presentation, session, transport, network, data link, physical

presentation, data link, session, transport, network, physical, application

20. Which statements correctly identify the role of intermediary devices in the network? (Choose three.)

determine pathways for data

initiate data communications

retime and retransmit data signals

originate the flow of data

manage data flows

final termination point for data flow

21. Refer to the exhibit. What type of network is shown?

WAN

MAN

LAN

WLAN

In your opinion (this has no bearing on your grade), please indicate your interest in this course:

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In your opinion (this has no bearing on your grade), please indicate how enthusiastic you are about the content of this course and the things

you’re learning (or have learned):

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(3) Enthusiastic

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(5) Completely Enthusiastic

In your opinion (this has no bearing on your grade), please rate your motivation to do well in this course:

(1) Not At All Motivated

(2) Slightly Motivated

(3) Motivated

(4) Very Motivated

(5) Completely Motivated

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