ару сука икт

65 A record of who has used a computer and what they have used it for.

• IP address

• protocol

• audit log

• security breach

• backdoor

Most Popular Desktop Operating Systems​ are …

• Android, IOS, BlackBerry

• Unix, Android, SQL

• Access, Word, Windows

• Paradox, MS-DOS, BIOS

• Windows, Mac, Linux

67How does a keylogger work?

• None of the above

• become part of operating system.

• fixes error in program

• look for authentication program.

• records every keystroke made by computer user.

When IBM introduced its first personal computer which is called IBM PC? 

• in 1990

• in 1987

• in 1983

• in 1985

• in 1981

69The first electronic digital computer contained?

• Electronic valves

• Vacuum tubes

• Semiconductor memory

• Transistors

• None of the above

What is overwriting viruses?

• it is worm.

• it is malware which overwrite code and destroy files on computer system.

• it is harmful website.

• it includes resident extension.

• it is virus that becomes a part of the operation system.

File extension of video file

• avi, mp4, mov, wmv

• bat, com, exe

• bmp, eps, gif, tif

• ase, doc, msg, pdf

• arj, rar, exl, txt, mov

A piece of code that is used to fix a flaw, error or vulnerability in a computer program.

• firewall

• Bug

• Protocol

• Patch

• Keylogger

Which of the following are the two main components of the CPU?

• None of the above

• control unit and ALU

• ALU and bus

• control unit and registers

• registers and main memory

1024 bytes represent a ...

• Terabyte

• None of the above

• Kilobyte

• Megabyte

• Gigabyte