《计算机专业英语》第09章在线测试
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《计算机专业英语》第09章在线测试
《计算机专业英语》第09章在线测试 剩余时间: -19:0-12
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第一题、单项选择题(每题1分,5道题共5分)
1、A ________ is a set of rules that controls the interaction of different devices in a network or internetwork.
A、model B、protocol
C、dialog D、query
2、The OSI model has _____ layers.
A、four B、five
C、six D、seven
3、Whereas a repeater operates only in the physical layer of the OSI model, a bridge operates in both the physical layer and
the ________ layer of the OSI model.
A、Transport Layer B、Network Layer
C、data-link D、Physical Layer
4、A(n) ________ is usually a computer installed with the necessary software and allows two networks, each with a completely different set of protocols, to communicate.
A、hub B、gateway
C、switch D、router
5、The distinction between the two terms gateway and ________ is disappearing. They are now used interchangeably.
A、hub B、router
C、swtich D、gateway
第二题、多项选择题(每题2分,5道题共10分)
1、The end equipment in a communication system includes ______.
A、computers
B、CRTs
C、printers D、keyboards
2、The equipment ______.
A、manipulates digital information internally in serial form
B、manipulates digital information internally in word units
C、transfers the number of bits in parallel
D、transfers the number of bits in serial form
3、DTE is ______.
A、Digital T-carrier
B、data terminal equipment
C、satellite
D、the last piece of equipment that belonged to the subscriber in a data link system
4、There are AB_ between the DTEs.
A、the modem
B、communications equipment
C、digital-to-analog converter
D、will be replaced by an upd_ated standard
5、__________ provides transparent transfer of data between end users, providing reliable data transfer services to the upper layers.
A、The Transport Layer
B、Session Layer
C、Presentation Layer
D、Application Layer
E、Network Layer
第三题、判断题(每题1分,5道题共5分)
1、Design of a network and its logical structure should comply with a set of design principles. 正确 错误
2、The OSI model was not created by the ISO.
正确 错误
3、The network architecture is a layer-based.
正确 错误
4、A LAN (Local area data networks) is a group of computers and the network devices connected together usually within the different buildings.
正确 错误
5、Most wide area networks, such as the PSTN, not use a mesh (sometimes referred to as a network) topology.
正确 错误
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