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宁波大学 2009 / 2010 学年第 1 学期考试卷（○A/B）
课号：_ 101G09XT1 _ 课名： 计算机网络__
一、单选题，每题仅一个正确答案，每题1.5分，共30分：
[ ]1. Which is not a network communication links?
D.Subway
[ ]2.Which is not the types of protocol data unit in TCP/IP?
C.datetime
[ ]3.In which state the delays of router become small?
A. La/R ~ 0
[ ]4.When congest occur in network, which delay become large?
B.queuing delay
[ ]5.Application protocol define the types of messages exchanged, which are:
A.request & response messages
[ ]6.Which version of hypertext transfer protocol are used in default mode now? C.HTTP 1.1
[ ]7.The Http client works on which port: C.TCP port above 1024
[ ]8.To indicates end of message in Http, we can use:
A.Carriage return and line feed
[ ]9.Which is not an email protocol: C.Emule
[ ]10. TCP retransmission can not be caused by:
D. ACK
[ ]11. Which of the following measures the time from one segment transmission to ACK receipt:
A. sample RTT
[ ]12. Which event will not be in TCP Receiver:
C.Arrival of out-of-order segment higher-than-expect seq. # . No gap detected.
[ ]13.TCP Flow Control is a speed-matching service for matching:
A.the sender rate to the receiving application’s drain rate
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宁波大学 2009 / 2010 学年第 1 学期考试卷（○A/B）
课号：_ 101G09XT1 _ 课名： 计算机网络__
[ ]14.Which one is not the mechanism of TCP Congestion Control:
C.FIFO
[ ]15.In RDT protocol, which can increase the use of physical resources: C.Pipeline
[ ]16. Which one is not the Key Network-Layer Functions in today’s internet:
C. Connection setup
[ ]17. Which of the following IP address belongs to category C address?
A. 210.98.3.4
[ ]18.Network address translation implement in NAT router, it must use:
C．NAT translation table
[ ]19. ICMP do not error reporting about:
D. unknown username
[ ]20. In Ethernet’s CSMA/CD Jam Signal make sure:
A.other transmitters are aware of collision
二、多选题，每题有2-3个正确答案，请在正确项前打钩(全钩不给分)，每题2分，共20分： 1. The communication services be provided to applications, It can be: [ ]A.connectionless
[ ]B.connection-oriented
2.Which are application architectures model in the internet? [ ]A.client/server model [ ]B.peer-peer model
[ ]C.browser/server model
3. User Agent is an interface with user “above” and network “below”, such as: [ ]A.Web: browser
[ ]B.E-mail: mail reader
[ ]D.Streaming audio/video: media player
4.Ftp protocol can work in which model that listed: [ ]A.PASV model [ ]C.Port model
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宁波大学 2009 / 2010 学年第 1 学期考试卷（○A/B）
课号：_ 101G09XT1 _ 课名： 计算机网络__
5. The problems with centralized directory of P2P maybe: [ ]A.Single point of failure [ ]C.Performance bottleneck [ ]D.Copyright infringement
6.Which services are not available in TCP: [ ]A.delay guarantees
[ ]C.bandwidth guarantees
7. In TCP congestion control, there are those State in TCP Sender: [ ]A. Congestion Avoidance [ ]C. Slow Start [ ]D. Timeout
8.In TCP three way handshake, it will be:
[ ]A.client host sends TCP SYN segment to server
[ ]C.server host receives SYN, replies with SYN/ACK segment [ ]D.client receives SYN/ACK, replies with ACK segment
9.Those are the routing in the Internet: [ ]A.RIP [ ]B.OSPF [ ]D.BGP
10.Those are the Random Access Protocols： [ ]B.CSMA [ ]C.CSMA/CD
三、名称缩写选择，请在匹配项上填写缩写编号，如果在下列18个选项中没有， 可以在19－20项中自主添加选项。共10分：
[ 1 ]往返时间 [ 20 ]可靠传输协议 [ 13 ]网络接口卡 [ 17 ]自治系统 [ 12 ]网络地址翻译协议 [ 5 ]用户数据报协议 [ 10 ]协议数据单元 [ 9 ]动态地址分配协议
[ 19 ]Internet协议 [ 3 ]生存时间
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19.( IP )20.( RDT )
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