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本课程起止时间为:2022-02-21到2022-06-30

Week 1: (Total Video Duration 116’53”, 16 Videos) Unit Test of the First Week

1、 问题:Which is at the bottom of the OSI reference model?  ( )
选项:
A:Physical Layer
B:Application Layer
C:Network Layer
D:Transport Layer
答案: 【Physical Layer

2、 问题:If the network topology is a "closed loop" which composed of the site and the link connecting the site, then the topology is called ( )
选项:
A:Ring topology
B:Star topology
C:Bus topology
D:Tree topology
答案: 【Ring topology

3、 问题:In the OSI reference model, the first bottom-up level to provide end-to-end services is ( )
选项:
A:Transport layer
B:Network Layer
C:Data Link Layer
D:Application Layer
答案: 【Transport layer

4、 问题:In the OSI reference model, the main function of the Physical Layer is ( )
选项:
A:Transparently transmitting bit streams
B:Access control and management of data link
C:Transferring data frames between physical entities
D:Transferring data frames between physical entities
答案: 【Transparently transmitting bit streams

5、 问题:ARPANET is the predecessor of the Internet. It is a ( )
选项:
A:Packet switching network
B:Circuit switching network
C:Message Switching Network
D:Mixed Switching Network
答案: 【Packet switching network

6、 问题:Among the following options, which one is not described in the network architecture. ( )
选项:
A:Details of internal protocol implementation 
B:Network level
C:Usage protocol of each layer
D:Functions to be completed for each layer
答案: 【Details of internal protocol implementation 

7、 问题:A system that uses various means of communication to organically connect geographically dispersed autonomous computers to realize mutual communication and share hardware, software and data resources is called ( )
选项:
A:Computer network
B:Terminal time sharing system
C:Distributed computer system
D:Multi machine system
答案: 【Computer network

8、 问题:The syntax of the three elements of network protocol stipulates that ( )
选项:
A:“How to say” in communication
B:Explanation of contents to be expressed by both parties in communication
C:What should communication parties “say” when communicating
D:Execution sequence of communication events
答案: 【“How to say” in communication

9、 问题:The semantics of the three elements of network protocol stipulate ( )
选项:
A:What should communication parties “say” when communicating
B:“How to say” in communication
C:Structure or format of data and control information
D:Execution sequence of communication events
答案: 【What should communication parties “say” when communicating

10、 问题:In computer network architecture, the basic unit of Network Layer transmission is ( )
选项:
A:Packet
B:Bit
C:Frame
D:Character
答案: 【Packet

11、 问题:In the OSI architecture, what directly serves the Application Layer is ( )
选项:
A:Presentation Layer
B:Conversation Layer
C:Transport Layer
D:Network Layer
答案: 【Presentation Layer

12、 问题:IP protocol is located in () of the TCP/IP architecture.
选项:
A:Interconnection Network Layer
B:Application Layer
C:Transport Layer
D:Network access Layer
答案: 【Interconnection Network Layer

13、 问题:A computer network in a building belongs to ( ).
选项:
A:LAN
B:PAN
C:MAN
D:WAN
答案: 【LAN

14、 问题:In the computer network with star topology composed of N nodes, the number of physical links is ( )
选项:
A:N-1
B:N
C:N+1
D:2N
答案: 【N-1

15、 问题:The internal network of a school generally belongs to ( )
选项:
A:LAN
B:PAN
C:MAN
D:WAN
答案: 【LAN

16、 问题:The abbreviation of "China Education Research Network" is ( )
选项:
A:CERNET
B:ChinaDDN
C:ISO
D:ChinaNET
答案: 【CERNET

17、 问题:The Internet originated from ( )
选项:
A:U.S.A
B:China
C:France
D:Britain
答案: 【U.S.A

18、 问题:In the OSI reference model, which of the basic unit of transmission is frame? ( )
选项:
A:Data Link Layer
B:Physical Layer
C:Network Layer
D:Transport Layer
答案: 【Data Link Layer

19、 问题:The basic unit of Physical Layer transmission is frame.( )
选项:
A:正确
B:错误
答案: 【错误

20、 问题:The basic unit of Data Link Layer transmission is bit.( )
选项:
A:正确
B:错误
答案: 【错误

21、 问题:In the computer network architecture, service is a "vertical" concept.( )
选项:
A:正确
B:错误
答案: 【正确

22、 问题:A network protocol consists of three elements: syntax, semantics and synchronization.( )
选项:
A:正确
B:错误
答案: 【正确

23、 问题:In computer network architecture, protocol is a "horizontal" concept.( )
选项:
A:正确
B:错误
答案: 【正确

24、 问题:"Internet plus" is the use of information and communication technology and Internet platform, so that the Internet and traditional industries in depth integration.( )
选项:
A:正确
B:错误
答案: 【正确

25、 问题:Everything over IP refers to that IP protocol can run on the various types networks.( )
选项:
A:正确
B:错误

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