绪论 单元测试

1、判断题:
本课程采用“自顶向下”的方式讲解计算机网络原理。
选项:
A:错
B:对
答案: 【

第一章 单元测试

1、判断题:
The web server is not an end system?
选项:
A:错
B:对
答案: 【

2、单选题:
The upper layers of the OSI model are ( )in correct order.
选项:
A:Session,application,presentation,physical
B:Session,application,presentation
C:Session,presentation,application
D:Application,presentation,session
答案: 【Session,presentation,application

3、单选题:
The lower layers of the OSI model are ( )in correct order.
选项:
A:physical,data link,network,transport
B:physical,system,network,logical
C:physical,logical,system,network
D:physical,transport,network,data link
答案: 【physical,data link,network,transport

4、单选题:
The Internet Protocol (IP) generally corresponds to which OSI layer?
选项:
A:Network(layer three)
B:Data link(layer two)
C:Transport(layer four)
D:Session(layer five)
答案: 【Network(layer three)

5、单选题:
Which of these network devices primarily functions at the OSI Network layer(layer 3)?
选项:
A:Router
B:Gateway
C:Switch
D:All of the above
答案: 【Router

第二章 单元测试

1、判断题:
TCP is an application layer protocol.
选项:
A:错
B:对
答案: 【

2、单选题:
Which is not an application layer protocol? ( )
选项:
A:DNS
B:ARP
C:HTTP
D:FTP
答案: 【ARP

3、判断题:
The only architecture of applications is peer-to-peer.
选项:
A:错
B:对
答案: 【

4、判断题:
In the client-server architecture, the clients is not always on.
选项:
A:对
B:错
答案: 【

5、单选题:
Mail server port number is ( )
选项:
A:80
B:81
C:403
D:25
答案: 【25

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