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ENetwork Chapter 2 - CCNA Exploration (Version 4.0)  

2009-03-31 13:54:37|  分类: ccna1 |  标签: |举报 |字号 订阅

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1 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 
 

 

Scoring Rule For:  correctness of response
Option 1, Option 3, and Option 5 are correct.
1 point for each correct option.
0 points if more options are selected than required. 
Max Value = 3
 

This item references content from the following areas:
CCNA Exploration
2.1.6 Network Media
 

2 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 
 

 

Scoring Rule For:  correctness of response
Option 1, Option 3, and Option 5 are correct.
1 point for each correct option.
0 points if more options are selected than required. 
Max Value = 3
 

This item references content from the following areas:
CCNA Exploration
2.3.2 Network Protocols
 

3 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 
 

 

Scoring Rule For:  correctness of response
Option 2, Option 4, and Option 5 are correct.
1 point for each correct option.
0 points if more options are selected than required. 
Max Value = 3
 

This item references content from the following areas:
CCNA Exploration
2.3.2 Network Protocols
 

4 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 
 

 

Scoring Rule For:  correctness of response
2 points for Option 1
0 points for any other option 
Max Value = 2
 

This item references content from the following areas:
CCNA Exploration
2.4.7 The OSI Model
 

5 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 
 

 

Scoring Rule For:  correctness of response
Option 3 and Option 4 are correct.
1 point for each correct option.
0 points if more options are selected than required. 
Max Value = 2
 

This item references content from the following areas:
CCNA Exploration
2.4.8 Comparing the OSI Model with the TCP/IP Model
 

6 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 
 

 

Scoring Rule For:  correctness of response
2 points for Option 4
0 points for any other option 
Max Value = 2
 

This item references content from the following areas:
CCNA Exploration
2.3.3 Protocol Suites and Industry Standards
 

7 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 
 

 

Scoring Rule For:  correctness of response
2 points for Option 2
0 points for any other option 
Max Value = 2
 

This item references content from the following areas:
CCNA Exploration
2.1.4 End Devices and their Role on the Network
 

8

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 
 

 

Scoring Rule For:  correctness of response
2 points for Option 2
0 points for any other option 
Max Value = 2
 

This item references content from the following areas:
CCNA Exploration
2.1.5 Intermediary Devices and their Role on the Network
 

9

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 
 

 

Scoring Rule For:  correctness of response
Option 2, Option 3, and Option 6 are correct.
1 point for each correct option.
0 points if more options are selected than required. 
Max Value = 3
 

This item references content from the following areas:
CCNA Exploration
2.2.2 Wide Area Networks
 

10 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). 
 

 

Scoring Rule For:  correctness of response
Option 1, Option 2, and Option 5 are correct.
1 point for each correct option.
0 points if more options are selected than required. 
Max Value = 3
 

This item references content from the following areas:
CCNA Exploration
2.2.2 Wide Area Networks
 

11

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

 

Scoring Rule For:  correctness of response
2 points for Option 4
0 points for any other option 
Max Value = 2
 

This item references content from the following areas:
CCNA Exploration
2.3.1 Rules that Govern Communications
 

12 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 
 

 

Scoring Rule For:  correctness of response
2 points for Option 5
0 points for any other option 
Max Value = 2
 

This item references content from the following areas:
CCNA Exploration
2.5.4 Getting the Data to the Right Application
 

13 What device is considered an intermediary device?
 
 file server 
 IP phone 
 laptop 
 printer 
 =switch 
 

 

Scoring Rule For:  correctness of response
2 points for Option 5
0 points for any other option 
Max Value = 2
 

This item references content from the following areas:
CCNA Exploration
2.1.5 Intermediary Devices and their Role on the Network
 

14

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

 

Scoring Rule For:  correctness of response
2 points for Option 4
0 points for any other option 
Max Value = 2
 

This item references content from the following areas:
CCNA Exploration
2.1.5 Intermediary Devices and their Role on the Network
 

15

Refer to the exhibit. What type of network is shown?
 
 WAN 
 MAN 
 =LAN 
 WLAN 
 

 

Scoring Rule For:  correctness of response
2 points for Option 3
0 points for any other option 
Max Value = 2
 

This item references content from the following areas:
CCNA Exploration
2.2.1 Local Area Networks
 

16 Which layer encapsulates the segment into packets?
 
 physical 
 data link 
 =network 
 transport 
 

 

Scoring Rule For:  correctness of response
2 points for Option 3
0 points for any other option 
Max Value = 2
 

This item references content from the following areas:
CCNA Exploration
2.4.5 Protocol Data Units and Encapsulation
 

17 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 
 

 

Scoring Rule For:  correctness of response
2 points for Option 2
0 points for any other option 
Max Value = 2
 

This item references content from the following areas:
CCNA Exploration
2.5.3 Getting the Data through the Internetwork
 

18

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 
 

 

Scoring Rule For:  correctness of response
2 points for Option 5
0 points for any other option 
Max Value = 2
 

This item references content from the following areas:
CCNA Exploration
2.1.4 End Devices and their Role on the Network
 

19 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. 
 

 

Scoring Rule For:  correctness of response
2 points for Option 3
0 points for any other option 
Max Value = 2
 

This item references content from the following areas:
CCNA Exploration
2.5.2 Getting the Data to the End Device
 

20 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 
 

 

Scoring Rule For:  correctness of response
2 points for Option 4
0 points for any other option 
Max Value = 2
 

This item references content from the following areas:
CCNA Exploration
2.4.3 The TCP/IP Model
 

21 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 
 

 

Scoring Rule For:  correctness of response
2 points for Option 4
0 points for any other option 
Max Value = 2
 

This item references content from the following areas: 

  
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