關於認證CCNA希望高手解答都是英文第二章18提(1~8)

1 What is the term used to describe the transport layer protocol data unit? ( )bits ( )packets ( )segments ( )frames ( )data streams 2 Which of the following are factors that determine throughput? (Choose two.) ( )types of passwords used on servers ( )type of Layer 3 protocol used ( )network... show more 1 What is the term used to describe the transport layer protocol data unit?

( )bits
( )packets
( )segments
( )frames
( )data streams





2 Which of the following are factors that determine throughput? (Choose two.)

( )types of passwords used on servers
( )type of Layer 3 protocol used
( )network topology
( )width of the network cable
( )number of users on the network





3 What is one advantage of defining network communication by the seven layers of the OSI model?

( )It increases the bandwidth of a network.
( )It makes networking easier to learn and understand.
( )It eliminates many protocol restrictions.
( )It increases the throughput of a network.
( )It reduces the need for testing network connectivity.





4 Refer to the following list. Choose the correct order of data encapsulation when a device sends information.
1.segments
2.bits
3.packets
4.data
5.frames

( )1 - 3 - 5 - 4 - 2
( )2 - 1 - 3 - 5 - 4
( )2 - 4 - 3 - 5 - 1
( )4 - 3 - 1 - 2 - 5
( )4 - 1 - 3 - 5 - 2
( )3 - 5 - 1 - 2 - 4





5 What makes it easier for different networking vendors to design software and hardware that will interoperate?

( )OSI model
( )proprietary designs
( )IP addressing scheme
( )standard logical topologies
( )standard physical topologies





6 Which layer of the OSI model provides network services to processes in electronic mail and file transfer programs?

( )data link
( )transport
( )network
( )application





7 Which layer of the OSI model provides connectivity and path selection between two end systems where routing occurs?

( )physical layer
( )data link layer
( )network layer
( )transport layer




8 A switch has failed in the network. As a result, only one segment of the network is down. Which type of physical network topology is implemented?

( )bus
( )ring
( )star
( )extended star
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