试题1

The Border Gateway Protocol(BGP) is an interautonomous system  （1）  protocol. The primary function of a BGP speaking system is to exchange network  （2）  information with other BGP system. This network reachability information includes information on the list of Autonomous System(ASs) that reachability information traverses. BGP-4 provides a new set of mechanisms for supporting  （3）  interdomain routing. These mechanisms include support for advertising an IP  （4）  and eliminate the concept of network class within BGP. BGP-4 also introduces mechanisms that allow aggregation of routes, including  （5）  of AS paths. These changes provide support for the proposed supernetting scheme.
（1）A、connecting
B、resolving
C、routing
D、supernetting
（2）A、secubility
B、reachability
C、capability
D、reliability
（3）A、answerless
B、connectionless
C、confirmless
D、classless
（4）A、prefix
B、suffix
C、infix
D、reflex
（5）A、reservation
B、relation
C、aggregation
D、connection

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试题2

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试题3

A. A
B. B
C. C
D. D

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试题4

下面关于Manchester编码的叙述中，错误的是　（ ）　。
A、Manchester编码是一种双相码
B、Manchester编码提供了比特同步信息
C、Manchester编码的效率为50%
D、Manchester编码应用在高速以太网中

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试题5

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试题6

路由器通过光纤连接广域网的是　（ ）　。
A、SFP端口
B、同步串行口
C、Console端口
D、AUX端口

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试题7

Without proper safeguards, every part of a network is vulnerable to a security breach or unauthorized activity from （1）, competitors, or even employees. Many of the organizations that manage their own （2） network security and use the Internet for more than just sending/receiving e-mails experience a network （3）— and more than half of these companies do not even know they were attacked. Smaller （4） are often complacent, having gained a false sense of security. They usually react to the last virus or the most recent defacing of their website. But they are trapped in a situation where they do not have the necessary time and（5）to spend on security.
（1）A．intruders
B．terminals
C．hosts
D．users
（2）A．exterior
B．internal
C．centre
D．middle
（3）A．attack
B．collapse
C．breakdown
D．virus
（4）A．users
B．campuses
C．Companies
D．networks
（5）A．safeguards
B．businesses
C．experiences
D．Resources

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试题8

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试题9

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试题10

TCP/IP在多个层次引入了安全机制，其中TLS协议位于  （ ）  。
A、数据链路层
B、网络层
C、传输层
D、应用层

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