第一部分 概述（Overview） （视频总时长130’24，19个视频）
第一部分 单元测验
1、单选题：
In OSI/RM architecture,the lowest is （ ）
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 （ ）
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 （ ）
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 （ ）
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 ( )
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 （ ）
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（ ）
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.
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 （ ）
A: personal area network
B: LAN
C: MAN
D: WAN
答案: LAN
10、单选题：
A campus network belongs to （ ）
A: personal area network
B: LAN
C: MAN
D: WAN
答案: LAN
11、单选题：
Internet originated from （ ）
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 ( )
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.
A: 正确
B: 错误
答案: 错误
14、判断题：
The basic unit of data link layer transmission is bit.
A: 正确
B: 错误
答案: 错误
15、判断题：
In network architecture, service is a “vertical” concept.
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.
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.
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.
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.
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
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)。
A: 正确
B: 错误
答案: 正确
22、判断题：
Frame is encapsulated in packet in communication network architecture.
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.
A: 正确
B: 错误
答案: 错误
24、判断题：
OSI/RM is a de facto international network communication standard.
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
第二部分 Data Communications（数据通信）（视频总时长141’40，17个视频）
Error Control Techniques
1、单选题：
A: 0100
B: 1010
C: 0111
D: 1111
答案: 1111
2、单选题：
A: 6
B: 8
C: 1
D: 14
答案:
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