關於認證CCNA希望高手解答都是英文第二章18提(9~18)
9 Which of the following are data link layer encapsulation details? (Choose two.)
( )A header and trailer are added.
( )Data is converted into packets.
( )Packets are packaged into frames.
( )Frames are divided into segments.
( )Packets are changed into bits for Internet travel.
10 Which three features apply to LAN connections? (Choose three.)
( )operate using serial interfaces
( )make network connection using a hub
( )limited to operation over small geographic areas
( )provide part-time connectivity to remote services
( )typically operate under local administrative control
( )provide lower bandwidth services compared to WANs
11 Which of the following are ways that bandwidth is commonly measured? (Choose three.)
( )GHzps
( )kbps
( )Mbps
( )Nbps
( )MHzps
( )Gbps
12 Which of the following are layers of the TCP/IP model? (Choose three.)
( )Application
( )Physical
( )Internet
( )Network Access
( )Presentation
13 Which best describes the function of the physical layer?
( )Defines the electrical and functional specifications for the link between end systems.
( )Provides reliable transit of data across a physical link.
( )Provides connectivity and path selection between two end systems.
( )Concerned with physical addressing, network topology and media access.
14 Which term describes the process of adding headers to data as it moves down OSI layers?
( )division
( )encoding
( )separation
( )segmentation
( )encapsulation
15 The central hub has malfunctioned in the network. As a result, the entire network is down. Which type of physical network topology is implemented?
( )bus
( )star
( )ring
( )mesh
16 Refer to the exhibit. Which column shows the correct sequence of OSI model layers?
( )A
( )B
( )C
( )D
17 Which two features apply to WAN connections? (Choose two.)
( )operate using serial interfaces
( )make network connection using a hub
( )limited to operation over small geographic areas
( )typically operate under local administrative control
( )provide lower bandwidth services compared to LANs
18 Refer to the exhibit. Identify the devices labeled A, B, C, and D in the network physical documentation.
( )A=bridge, B=switch, C=router, D=hub
( )A=bridge, B=hub, C=router, D=switch
( )A=bridge, B=router, C=hub, D=switch
( )A=hub, B=bridge, C=router, D=switch
1 個解答
- 家榮Lv 52 0 年前最佳解答
9，A header and trailer are added、Packets are packaged into frames.
10，limited to operation over small geographic areas、provide part-time connectivity to remote services、typically operate under local administrative control
11，kbps、Mbps、Gbps
12，Application、Physical、Internet
13，Defines the electrical and functional specifications for the link between end systems.
14，Data資料下到第四層封裝成為Segament
15，Star
16，沒圖
17，operate using serial interfaces 、provide lower bandwidth services compared to LANs
18，沒圖
參考資料： 自已
