12. ( ), which stands for Motion Picture Experts Group (MPEG) Layer 3, is rapidly becoming the standard for music transmission via Internet. A. MP3 B. MP4 C. JPEG D. AVI ...

7. ( ) is a protocol that lets a user log in to a remote computer and use programs and data that the remote owner has made available, just as if it were their own computer. A. FTP B. WWW C. Telnet D. NSFNET ...

2. ( ), the process of compressing a file such that,after being compressed and decompressed, it matches its original format bit for bit. A. Lossy compression B. Lossless compression C. Bitmap D. Vector image ...

6. LAN, communications network that covers a wide geographical area, such as a state or a country.( ) A. 错误 B. 正确 ...

17. A ( ) is a highly intelligent device that supports connectivity between both like and unlike LANs,and between LANs and WANs or MANs. A. router B. repeater C. switch D. bridge ...

11. A ( ) is software that looks at an entire high-level program before translating it into machine language. A. compiler B. interpreter C. instruction D. process ...

2. ( ) 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. A. LAN B. WAN C. MAN D. None of the above ...

18. ( ) is one of the components of the CPU, tells the rest of the computer system how to carry out a program's instructions. A. Control unit B. ALU C. RAM D. ROM ...

8. A ( ) is the primary input device. It is used for entering letters, numbers and commands into the system. A. RAM B. keyboard C. output devices D. memory ...

6. HTML标签代码表示（）。 A. 添加一个图像 B. 排列对齐一个图像 C. 设置围绕一个图像的边框的大小 D. 加入一条水平线 ...