大工16秋《专业英语（计算机英语）》在线测试2
大工16秋《专业英语（计算机英语）》在线测试2一、单选题：
1.A ( ) channel allows simultaneous message exchange in both directions.It really consists of two simplex channels, a forward channel and a reverse channel,linking the same points. (满分:4)
A. half-duplex
B. full-duplex
C. simplex
D. none of the above
2.( ), the protocol for transferring HTML files on the Web. (满分:4)
A. HTML
B. ISP
C. Client
D. Server
3.( ) ,also known as service programs, perform specific tasks related to managing computer resources. (满分:4)
A. Utilities programs
B. System software
C. Operating system
D. none of the above
4.( ), difference between the lowest and highest frequencies transmitted in a particular channel or system. (满分:4)
A. Amplitude
B. Bandwidth
C. Bridge
D. Network
5.( ), computer shared by several users in a network. (满分:4)
A. Protocol
B. Server
C. Network
D. Node
6.( ) is a subclass of software. It consists of a collection of programs that control the operations of a computer and its devices. It servers as the interface between the user and the computer hardware. (满分:4)
A. System software
B. Application software
C. Operating system
D. none of the above
7.( ), type of LAN that combines star, ring, bus networks, and etc. (满分:4)
A. Bus network
B. Star network
C. Ring network
D. Hybrid network
8.( ), software used in corporate networks(intranets and extranets) to prevent unauthorized people from accessing the network. (满分:4)
A. Firewall
B. Modem
C. Hypertext
D. TCP
9.( ), set of conventions governing the exchange of data between hardware and /or software components in a communications network. (满分:4)
A. Protocol
B. Node
C. Packet
D. Network
10.( ) is a device that functions as both a router and a bridge. (满分:4)
A. Repeater
B. Switch
C. Gateway
D. Brouter
11.( ), short for modulator/demodulator, device that converts digital signals into a representation of analog form(modulation) to send over phone lines;a receiving modem then converts the analog signal back to a digital signal(demodulation). (满分:4)
A. Server
B. Network
C. Modem
D. Gateway
12.( ), fixed-maximum-length block of data for transmission. The packet also contains information about its destination. (满分:4)
A. Protocol
B. Node
C. Packet
D. Network
13.( ) controls how you enter data or instructions and how information is displayed on the computer screen. (满分:4)
A. User interface
B. Language translators
C. Utilities programs
D. System software
14.A ( ) is a highly intelligent device that supports connectivity between both like and unlike LANs,and between LANs and WANs or MANs. (满分:4)
A. router
B. repeater
C. switch
D. bridge
15.( ), type of local area network(LAN) in which all communications devices are connected in a continuous loop and messages are passed around the ring until they reach the right destination. There is no central server. (满分:4)
A. Bus network
B. Star network
C. Ring network
D. Hybrid network
16.( ), interface that enables dissimilar networks to communicate with one another. (满分:4)
A. Gateway
B. Bridge
C. Bandwidth
D. none of the above
17.In a ( ) network, all microcomputers and other communications devices are connected to a central hub, such as a file server or host computer, usually via(UTP). (满分:4)
A. bus
B. star
C. tree
D. ring
18.( ) is an acronym for local area network.It is a group of computers and other devices dispersed over a relatively limited area and connected by a communications link. (满分:4)
A. LAN
B. WAN
C. MAN
D. None of the above
19.( ), type of network in which all communications devices are connected to a common channel, with no central server. (满分:4)
A. Bus network
B. Star network
C. Ring network
D. none of the above
20.In a ( ) network, all microcomputers and other communication devices are connected to a continuous loop. (满分:4)
A. bus
B. star
C. tree
D. ring
三、判断题：
1.We abbreviate Virtual Private Networks to VPN.( ) (满分:2)
A. 错误
B. 正确
2.View shortcut menus by right-clicking with the mouse.( ) (满分:2)
A. 错误
B. 正确
3.Hardware also called a program, is the series of computer language coded instructions that tells the computer how to perform tasks.( ) (满分:2)
A. 错误
B. 正确
4.Windows versions before Windows 95 rely on DOS as the operating system.( ) (满分:2)
A. 错误
B. 正确
5.TCP provides reliable, full-duplex connections and reliable service by ensuring that data is resubmitted when transmission results in an error.( ) (满分:2)
A. 错误
B. 正确
6.A backup program makes a copy of files you select.( ) (满分:2)
A. 错误
B. 正确
7.Object Oriented Programming(OOP) is a programming method that combines data and the instructions for processing that data into a self-sufficient "object" that can be used in other programs.( ) (满分:2)
A. 错误
B. 正确
8.ERP is Enterprise resource planning software.( ) (满分:2)
A. 错误
B. 正确
9.Linux is an operating system similar to Unix.( ) (满分:2)
A. 错误
B. 正确
10.A traditional private WAN can be expensive to build and manage.( ) (满分:2)
A. 错误
B. 正确
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