大学MOOC 数据通信与计算机通信网(Ⅰ)（李冬霞）(中国民航大学)1450436167 最新慕课完整章节测试答案

第一部分 单元测验

1、单选题：
‏In OSI/RM architecture,the lowest is （    ）​​‏​
选项：
A: application  layer 
B: network layer 
C: transmission layer 
D: physical layer
答案: 【 physical layer】

2、单选题：
‎‎In OSI/RM architecture, the first layer that provide end-to-end service from buttom to top is ​‎（   ）​​
选项：
A: network layer
B: transmission layer 
C: data link layer
D: application layer
答案: 【 transmission layer 】

3、单选题：
‍​‍In OSI/RM architecture,the function of physical layer is （      ）​
选项：
A: data link access control and management
B: Transparently transmitting bitstreams
C: transmitting data frames between physical entities.
D: transmitting and receiving data message.
答案: 【 Transparently transmitting bitstreams】

4、单选题：
‎ARPANET is the predecessor of Internet，and it is a （    ）‌
选项：
A: circuit switching network
B: message switching network
C: packet switching network
D: hybrid switching network
答案: 【 packet switching network】

5、单选题：
‌Among the following options, that not described in the network architecture is ( )‍
选项：
A: the implementation details in protocol
B: networks layers
C:  protocols used in each layer
D: the function of each layer 
答案: 【 the implementation details in protocol】

6、单选题：
​Syntax is one of the three features of protocol, it  concerns  （   ）‎
选项：
A: the format of data blocks.
B: the communication contents 
C: control information for coordination and error handling
D: speed matching and sequencing
答案: 【 the format of data blocks.】

7、单选题：
‌In TCP/IP architecture, the PDU in network layer is（   ）‎
选项：
A: bit
B: frame
C: packet
D: character
答案: 【 packet】

8、单选题：
​IP protocol is located in the (  ) of TCP/IP architecture.‏
选项：
A: application layer 
B: transmission layer
C: internet layer
D: network access layer
答案: 【 internet layer】

9、单选题：
‏A computer network in a building belongs to （    ）‎
选项：
A: personal area network
B: LAN
C: MAN
D: WAN
答案: 【 LAN】

10、单选题：
​A campus network belongs to （   ）​
选项：
A: personal area network
B: LAN
C: MAN
D: WAN
答案: 【 LAN】

11、单选题：
‏Internet  originated from （    ）‍
选项：
A: China
B: America
C: France
D: England
答案: 【 America】

12、单选题：
‎​‎​‎The main function of transmitter in data communications system is (  )​
选项：
A: transmitting signal from source to destination
B: transmitting data from source to media
C: generating data to be transmitted
D: generating signal which is suitable to be transmitted in the communication system
答案: 【 generating signal which is suitable to be transmitted in the communication system】

13、判断题：
‎The basic unit of physical layer transmission is frame.‏
选项：
A: 正确
B: 错误
答案: 【 错误】

14、判断题：
‏The basic unit of data link  layer transmission is bit.‎
选项：
A: 正确
B: 错误
答案: 【 错误】

15、判断题：
‌In network architecture, service is a "vertical" concept.​
选项：
A: 正确
B: 错误
答案: 【 正确】

16、判断题：
‌The key features of a protocol are syntax,semantics and timing.‏
选项：
A: 正确
B: 错误
答案: 【 正确】

17、判断题：
‌In network architecture, a protocol is a set of rules or conventions that allow peer layers to communicate.‎
选项：
A: 正确
B: 错误
答案: 【 正确】

18、判断题：
‌Everything over IP means that IP protocol can operate over different subnetworks  that are based on different techniques.‍
选项：
A: 正确
B: 错误
答案: 【 错误】

19、判断题：
‎The application layer of TCP / IP architecture corresponds to the upper three layers of OSI/RM architecture.‏
选项：
A: 正确
B: 错误
答案: 【 正确】

20、判断题：
‎All Internet standards are published on the Internet in the form of RFC documents‏
选项：
A: 正确
B: 错误
答案: 【 正确】

21、判断题：
​In network architecture, the place where adjacent layers interact is called service access point(SAP)。‏
选项：
A: 正确
B: 错误
答案: 【 正确】

22、判断题：
‍Frame is encapsulated in packet  in communication network architecture.‍
选项：
A: 正确
B: 错误
答案: 【 错误】

23、判断题：
‏Two mediums currently driving  the evolution of data communications transmission are fiber optic transmissions  and satellite transmissions.‍
选项：
A: 正确
B: 错误
答案: 【 错误】

24、判断题：
‎OSI/RM is a de facto international network communication standard.​‎​
选项：
A: 正确
B: 错误
答案: 【 错误】

25、填空题：
‎OSI/RM is an acronym, it stands for (    )‍‎‍
答案: 【 Open System Interconnection/Reference Model##%_YZPRLFH_%##open system interconnection/reference model】

26、填空题：
​TCP/IP is an acronym, it stands for (    )‍
答案: 【 Transmission Control Protocol/Internet Protocol##%_YZPRLFH_%##transmission control protocol/internet protocol】

Error Control Techniques

1、单选题：

‍

‎选项：
A: 0100
B: 1010
C: 0111
D: 1111
答案: 【 1111】

2、单选题：

‍

‍选项：
A: 6
B: 8
C: 1
D: 14
答案: 【