计算机文化复习知识点

Introduction to Computers(ALL)

True/False

Indicate whether the sentence or statement is true or false.

1. The price of a microcomputer typically starts at several hundred thousand dollars and can easily exceed $1

million.

____ 2. The system unit is the case that holds the main circuit boards, microprocessor, power supply, and hard drive. ____ 3. A national ISP is probably better than a local ISP for people who travel frequently.

____ 4. Every Web page has a unique address called a URL (Uniform Resource Locator).

____ 5. Web-based e-mail gives you the option of downloading your mail or leaving it on the server.

____ 6. You can usually identify the microprocessor when looking inside a computer, as it is the only chip on the motherboard.

____ 7. Cache size is not of particular significance to consumers because it is not configurable.

____ 8. A trackball looks like the tip of an eraser embedded in the keyboard of a notebook computer.

____ 9. User-executable program files have .exe filename extensions.

____ 10. Instructions written in machine language must be translated into a high-level language before a computer can use them.

____ 11. The Windows operating system gets its name from the rectangular work areas that appear on the screen-based desktop.

____ 12. If a file has the right extension for a particular application program, you will see it in the list of files that you can open with that software.

____ 13. An operating system maintains a list of files called a table for each storage disk, tape, CD, or DVD.

____ 14. Today, just about every computer uses one or more microprocessors as its CPU.

____ 15. A tablet computer is similar in size to a notebook computer, but features a touch-sensitive screen that can be used for input instead of a keyboard.

____ 16. A handheld computer, with add-ons, is powerful enough to handle all of the tasks performed by a desktop computer.

____ 17. Inexpensive add-ons to handheld computers make it possible to send and receive e-mail.

____ 18. Application software is a set of computer programs that helps a person carry out a task.

____ 19. Communication between all of the different devices on the Internet is made possible by HTTP (Hypertext Transfer Protocol), a standard set of protocols for electronically addressing and transmitting data.

____ 20. A password is a series of characters that verifies the user ID and is similar to a PIN.

____ 21. The computers and software that store and distribute Web pages are called Web clients.

____ 22. Any file that travels with an e-mail message is called an e-mail MIME.

____ 23. Most personal computers use Unicode, although Extended ASCII code is becoming increasingly popular.

____ 24. The prefix tera- means trillion.