Computer English

缩写转全称 1. CPU--central processing unit 2. CU --control unit 3. ALU--arithmetic/logic unit 4. RAM--random-access memory 5. MB --Megabytes 6. GB --Gigabytes 7. AGP--accelerated graphics port 8. IDE--integrated drive electronic 9. CAD/CAM--(computer aided design/manage) software 10. BASIC--beginners all-purpose symbolic instruction code 11. COBOL--common business-oriented language 12. FORTRAN--formula translation 13. 4GL--fourth-generation language 14. LISP--list processing 15. PDL--page description languages 16. PAN--Personal Area Network 17. LAN--Local Area Network 18. CAN--Campus Area Network 19. MAN--Metropolitan Area Network 20. WAN--Wide Area Network 21. PDA--Personal Digital Assistant 22. WPAN--Wireless Personal Area Network 23. GAN--Global Area Network 24. WLAN--Wireless Local Area Networks 25. IP--Internet Protocol 26. TCP--Transmission Control Protocol 27. IPv4--Internet Protocol Version 4 28. IPV6--IP Version 6 29. ISP--Internet Service Provider 30. DoS--Denial-of-Service 31. IRC--Internet Relay Chat 32. OSI--(Open Systems Interconnection）Reference Model 33. ACL--access control list 34. MUA--mail user agent 35. MTA--mail transfer agent 36. FQDA--Fully Qualified Domain Address 37. POP3--Post Office Protocol 3 一．True or False 1.CU executes stored program instructions. F 2.ALU can compare numbers and letters, but not special characters. F 3.Logical operations can test for three conditions and a computer can simultaneously test for more than one condition. T 4.The way information is stored in hard drive is as same as it is stored in RAM. F 5.Storing information in RAM is faster than in hard drive. T 6.The minimum RAM requirements are usually less than the Hard Drive requirements. T 7.The key components on motherboard are:microprocessor, chipset, BIOS chip, and a real-time clock. F 8.BIOS chip checks power supply, the hard disk drive and operating system after the computer boots up. F 9.CPU is powered up before other peripherals. T 10.Utility and applet are not software. F 11.Shareware, liteware, freeware, public domain software and open source are usually free. T 12.Programming languages are like human languages, which have different words and ways to organize these words. T 13.Assembly language is easier for computer to understand than machine language,for it has names. F 14.An OS is the set of programs that controls a computer. T 15.One of the major functions of an OS is recovering from the errors. T 16.An OS can transform the physical world of devices,instructions,memory and time into virtual world. T 17.CAN and MAN arebasically the same, except that CAN is bigger than MAN. F 18.If an MAN extends beyond boundaries of town or city, it should be called WAN. T 19.A host can have more than one IP address. T 20.Any packet is sent through one gateway computer to the destination address. F 21.Packets of the same message do not necessarily go the same route. T 22.It is IP which sends packets of the same message to the destination and put them in order. F 23.When you have your computer connected to the Internet,you are actually connecting your computer to a number of networks directly or indirectly. T 24.The Internet consists of a variety of hosts and networks. T 25.The general purpose of unauthorized access attack is to disable the target computer. F 26.Data diddler seems to be more patient than data destroyer. T 27.Virus, worm and Trojan Horse are not the same, but they are all vicious. T 28.Viruses are usually spread unintentionally. T 29.Both virus and worm need human help to travel from one computer to another. F 30.Worm can only make computers stop working, for its nature of copying itself. F 31.Trojan Horse is like virus, for both of them need human aid to be activated. T 32.The main purpose of firewall is to prevent Internet from accessing intranet. F 33.If the application gateway firewall is not configured, nothing can pass this firewall. T 34.Compared with application gateway firewall, packet filtering firewall is faster and sager. F 35.E-mail transgerring involves many protocols, which are the basis of Internet e-mail system. F 36.SMTP is not ofen used in a corporate e-mail system. T 37.Open mail relays provide good opportunities to spam. T 38.Information on crawler-based search engine is updated periodically. T 39.By using search engines, we are actually searching information through the whole Web. F 40.If two search engines use the same algorithm,then same result will appear to the same search. F