| 1.In the e-mail a user needs a message transfer agent. | |
| | 2.The set fo layers and protocols is called network architecture. | |
| | 3.The basic function of transport layer is to accept data from the session layer, and pass them to the network layer. | |
| | 4.The physical layer is concerned with transmitting raw bytes over a communication channel. | |
| | 5.Just about any modern computer can handle text processing and produce basic sounds. | |
| | 6.Video cameras are peripheral. | |
| | 7.The TCP/IP Internet protocol suite is formed from five standards. | |
| | 8.Viruses can cause programs crashing but can't cause entire hard disk deleting. | |
| | 9.All virus scanners can kill most known viruses. | |
| | 10.Factors that influence the quality of a monitor are screen size, resolution, and dot pitch. | |
| 1.The Internet is the world's largest computer （ ）. | |
| | 2.Communication through the Internet, the ( ) performs the reverse function. | |
| | 3.Which of the following expressions is true about the Internet? | |
| | 4.Virus is a ( ). | |
| | 5.The source code of a Web page consists of ( ). | |
| | 6.A firewall is a （ ） system designed to protect an organization’s network against threats. | |
| | 7.The OSI model has ( ) layers. | |
| | 8.Photoshop is the leading professional ( ) program, released by Adobe. | |
| | 9.Networks, in terms of transmission technology, can be divided into ( ). | |
| | 10.Network software consists of （ ） , or rules by which processes can communicate. | |
| | 11.The firewall device is a （ ） system for connecting a computer network to other computer network. | |
| | 12.Anti-Virus protects your computer from viruses by ( ) your computer's memory and disk devices. | |
| | 13.( ) is not a linear structure. | |
| | 14.A （ ） computer is a personal computer whose hardware is capable of using any or all of the following media in a program : audio,text,graphics,video and animation. | |
| | 15.Modem is ( ). | |
| | 16.（ ）：Messages that are sent electronically over a network. | |
| | 17.Bitmap images use a grid of small squares known as （ ） to represent images． | |
| | 18.（ ） means the conducting of business communication and transaction over network and through computers． | |
| | 19.( ) is a device that enables the computer to handle sounds. | |
| | 20.The Internet is an open system, and most information is available to everyone. It is very important to add （ ） to existing system for protecting the secret information. | |
| 1.Data transfer rules include ( ). | |
| | 2.Types of media include ( ). | |
| | 3.The Internet is ( ). | |
| | 4.The general types of designs for the communication subnet are ( ). | |
| | 5.Viruses can delay their attack for ( ). | |
| | 6.Which of the following structure is the topology? | |
| | 7.We can ( ) through the Internet. | |
| | 8.The subnet consists of two basic components:( ). | |
| | 9.The main areas of network use are ( ). | |
| | 10.Many viruses do harmful things such as ( ). | |
|
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