CCNA 1 Module 2

source : CCNA Exploration 1 – Module 2 answers

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1. What device is considered an intermediary device?
* laptop
* switch
* IP phone
* file server
* printer

2. What are the key functions of encapsulation? (Choose three.)
* enables the reassembly of complete messages

* allows modification of the original data before transmission
* enables consistent network paths for communication
* identifies pieces of data as part of the same communication

* ensures that data pieces can be directed to the correct receiving end device
* tracks delay between end devices

3. What is a primary function of the trailer information added by the data link layer encapsulation?
* identifies the devices on the local network
* assists intermediary devices with processing and path selection
* supports error detection
* provides delivery to correct destination
* ensures ordered arrival of data

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

* Data Link

* Network

* Transport

5. Which statements correctly identify the role of intermediary devices in the network? (Choose three.)
* retime and retransmit data signals
* originate the flow of data
* initiate data communications
* determine pathways for data
* manage data flows
* final termination point for data flow

6. 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, presentation, session, transport, network, data link, physical
* application, presentation, physical, session, data link, transport, network
* presentation, data link, session, transport, network, physical, application

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

7. During the encapsulation process, what occurs at the data link layer?
* The physical address is added.
* The logical address is added.
* The process port number is added.
* No address is added.

8. What can be identified by examining the network layer header?
* the path to use to reach the destination host
* the bits that will be transferred over the media
* the source application or process creating the data

* the destination device on the local media

9.Which layer encapsulates the segment into packets?
* network
* transport
* physical
* data link

10. 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 A — LAN
* Network B — MAN
* Network C — WAN

11. Refer to the exhibit. Which networking term describes the data interleaving process represented in the graphic?
* multiplexing
* piping
* encapsulation
* PDU
* streaming

12. What is a PDU?
* data reassembled at the destination
* a layer specific encapsulation
* corruption of a frame during transmission
* retransmitted packets due to lost communication

13. Which characteristic correctly refers to end devices in a network?
* retime and retransmit data signals
* originate data flow
* determine pathways for data
* manage data flows

14. 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?”
* an intermediate device
* an end device
* a media device

* the destination device

15. Refer to the exhibit. Which set of devices contains only end devices?
* E, F, H, I, J
* B, E, G, H
* A, C, D
* C, D, G, H, I, J
* D, E, F, H, I, J

16. Refer to the exhibit. Which term correctly identifies the device type that is included in the green area?
* transfer
* intermediary
* source
* end

17. Which three statements best describe a Local Area Network (LAN)? (Choose three.)
* The connection between segments in the LAN is usually through a leased connection.
* A LAN provides network services and access to applications for users within a common organization.
* The security and access control of the network are controlled by a service provider.
* A LAN is usually in a single geographical area.
* Each end of the network is generally connected to a Telecommunication Service Provider (TSP).

* The network is administered by a single organization.

18. What is the primary purpose of Layer 4 port assignment?
* to identify the source and destination end devices that are communicating
* to identify devices on the local medi
* to identify the processes or services that are communicating within the end devices
* to identify the hops between source and destination
* to identify to the intermediary devices the best path through the network

19. Refer to the exhibit. What type of network is shown?
* WLAN
* MAN
* LAN
* WAN
20. Select the statements that are correct concerning network protocols. (Choose three.)
* outline the functions necessary for communications between layers
* limit hardware compatibility
* define the structure of layer specific PDU’s

* dictate how to accomplish layer functions
* require layer dependent encapsulations
* eliminate standardization among vendors

21. What is the purpose of the TCP/IP Network Access layer?
* data representation, encoding, and control
* the division of segments into packets
* detailing the components that make up the physical link and how to access it
* reliability, flow control, and error detection
* path determination and packet switching