试题1

以太网中的帧属于 （ ） 协议数据单元。
A、物理层
B、数据链路层
C、网络层
D、应用层

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试题2

在Linux 系统中，采用 （1） 命令查看进程输出的信息，得到下图所示的结果。系统启动时最先运行的进程是 （2） ，下列关于进程xinetd的说法中正确的是 （3） 。

（1）A、ps -all
B、ps -aef
C、ls -a
D、ls –la
（2）A、0
B、null
C、init
D、bash
（3）A、xinetd是网络服务的守护进程
B、xinetd是定时服务的守护进程
C、xinetd进程负责配置网络接口
D、xinetd进程进程负责启动网卡

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试题3

以下域名服务器中，没有域名数据库的  （ ）  。
A、缓存域名服务器
B、主域名服务器
C、辅助域名服务器
D、转发域名服务器

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试题4

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试题5

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试题6

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试题7

目前在网络上流行的“熊猫烧香”病毒属于 （ ） 类型的病毒。
A、目录
B、引导区
C、蠕虫
D、DOS

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试题8

Border Gateway Protocol(BGP) is inter-autonomous system  (1)  protocol. BGP is based on a routing method called path vector routing. Distance vector routing is not a good candidate for inter-autonomous system routing because there are occasions on which the route with the smallest  (2)  count is not the preferred route. For example, we may not want a packet through an autonomous system that is not secure even though it is shortest route. Also, distance vector routing is unstable due to the fact that the routers announce only the number of hop counts to the destination without defining the path that leads to that  (3)  . A router that receives a distance vector advertisement packet may be fooled if the shortest path is actually calculated through the receiving router itself. Link  (4)  routing is also not a good candidate for inter-autonomous system routing because an internet is usually too big for this routing method. To use link state routing for the whole internet would require each router to have a huge link state database. It would also take a long time for each router to calculate its routing  (5)  using the Dijkstra algorism.
（1）A、routing
B、switching
C、transmitting
D、receiving
（2）A、path
B、hop
C、route
D、packet
（3）A、connection
B、window
C、source
D、destination
（4）A、status
B、search
C、state
D、research
（5）A、table
B、state
C、metric
D、cost

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试题9

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试题10

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