| 1.Only users need to view the internet as a network. | |
| | 2.Data communications equipment (DCE) accepts the serial data stream from the DTE. | |
| | 3.Viruses can cause programs crashing but can't cause entire hard disk deleting. | |
| | 4.The physical layer is concerned with transmitting raw bytes over a communication channel. | |
| | 5.We can use multimedia in Education, Edutainment and so on. | |
| | 6.Factors that influence the quality of a monitor are screen size, resolution, and dot pitch. | |
| | 7.Video cameras are peripheral. | |
| | 8.The TCP/IP Internet protocol suite is formed from five standards. | |
| | 9.The network architecture is a layer-based. | |
| | 10.The set fo layers and protocols is called network architecture. | |
| 1.The OSI model has ( ) layers. | |
| | 2.（ ）：Messages that are sent electronically over a network. | |
| | 3.The source code of a Web page consists of ( ). | |
| | 4.Virus is a ( ). | |
| | 5.( ) is a device that enables the computer to handle sounds. | |
| | 6.The Internet is the world's largest computer （ ）. | |
| | 7.A computer virus is a computer program that is created to make and spread ( ) of itself. | |
| | 8.( ) is used to communicate with another computer over telephone lines. | |
| | 9.The display screen is the most common ( ) device used to show you what the computer is doing. | |
| | 10.The usual address for a Web site is the （ ） page address, although you can enter the address of any page and have that page sent to you. | |
| | 11.You might work for an organization whose computer system is spread ( ) a building. | |
| | 12.One of the greatest features of a home （ ） is the ability to share one Internet connection simultaneously over two or more computers. | |
| | 13.The RGB value is composed of ( ) components. | |
| | 14.The （ ） in e-mail messages has affected almost every computer around the world and has caused the damage of up to US$1 billion in North America. | |
| | 15.With （ ） you can communicate in real time with people all around the world． | |
| | 16.The best way to describe the concept of playing a guitar is use of ( ). | |
| | 17.A （ ） is used to communicate with another computer over telephone lines. | |
| | 18.A firewall is a （ ） system designed to protect an organization’s network against threats. | |
| | 19.Multimedia will become increasingly ( ) throughout every aspect of our lives. | |
| | 20.Communication through the Internet, the ( ) performs the reverse function. | |
| 1.The general types of designs for the communication subnet are ( ). | |
| | 2.Which of the following structure is the topology? | |
| | 3.We can ( ) through the Internet. | |
| | 4.The main areas of network use are ( ). | |
| | 5.Viruses can delay their attack for ( ). | |
| | 6.Many viruses do harmful things such as ( ). | |
| | 7.Data transfer rules include ( ). | |
| | 8.The Internet is ( ). | |
| | 9.Types of media include ( ). | |
| | 10.Applications in the Internet can be found everywhere: ( ). | |
|
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