Examen cisco

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http://elmaestrodelared.blogspot.com CCNA Exploration 4.0: (I) Network Fundamentals Chapter 2: Communications over the Networks
1 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

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

4 What device is considered an intermediary device? file server IP phone laptop printer

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* switch5 Which layer encapsulates the segment into packets? physical * data link network transport

6 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

7 What can beidentified by examining the network layer header? the destination device on the local media * 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

8 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

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

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Network A -- WAN * Network B -- WAN * Network C -- LAN Network B -- MAN Network C -- WAN * Network A -- LAN

10 What are the key functions of encapsulation? (Choosethree.) 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

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

12 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

13 Refer to the exhibit. "Cell A" at IP address 10.0.0.34 has established an IP session with "IP Phone 1" atIP 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

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an intermediate device a media device

14 Refer to the...
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