试题1

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

查看答案

试题2

查看答案

试题3

查看答案

试题4

查看答案

试题5

查看答案

试题6

查看答案

试题7

安全散列算法SHA-1产生的摘要的位数是  （ ）  。
A、64
B、128
C、160
D、256

查看答案

试题8

在Windows2000操作系统中，配置IP地址的命令是 （1） 。若用ping命令来测试本机是否安装了TCP/IP协议，则正确的命令是 （2） 。如果要列出本机当前建立的连接，可以使用的命令是 （3） 。
（1）A、winipcfg
B、ipconfig
C、ipcfg
D、winipconfig
（2）A、ping 127.0.0.0
B、ping 127.0.0.1
C、ping 127.0.1.1
D、ping 127.1.1.1
（3）A、netstat –s
B、netstat –o
C、netstat-a
D、netstat -r

查看答案

试题9

IP地址172.17.16.255/23是一个　（ ）　。
A、网络地址
B、主机地址
C、定向广播地址
D、不定向广播地址

查看答案

试题10

查看答案