《计算机专业英语》第09章在线测试

A B

C D

The OSI model has

A B

C D

The purpose of the A is to provide fully integrated analog services to users.

A B

C D

＿＿＿＿＿＿＿＿ is a connecting device that only regenerates the signal.

A B

C D

＿＿＿＿＿＿＿＿ is usually a computer installed with the necessary software and allows two networks, each with a c

A B

C D

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、The Application layer in TCP/IP Model is correspond to ＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿ in OSI Model

A、Application Layer

B、Presentation Layer

C、Session Layer

D、Transport Layer

E、Network Layer

第三题、判断题（每题1分，5道题共5分）

1、The OSI model was not creaｔed by the ISO.

正确错误

The TCP/IP Internet protocol suite is formed from three standards.

正确错误

A LAN (Local area data networks) is a group of computers and the network devices connected together usually within the d

正确错误

The four topologies in common use are star, router, ring and hub.

正确错误

Three techniques have been adopted for use of the medium access control in the LANs.

正确错误