Top 100 MCQs and its answers of Computer subject always asked in every Exam and Interview


Computer MCQ’s




1. ------------Is the functional key to display save-as box?

            F5

            F6

            F9

            F12 (Answer)




2. Data becomes------------when it is presented in a format that people can understand and use.

A. processed

            graphs

            information (Answer)

            presentation



3. The term-----------designates equipment that might be added to a computer system to enhance its functionality.

A. digital device

B. system add-on

C. disk pack

D. peripheral device (Answer)



4. A ------------is a microprocessor -based computing device?

A. personal computer (Answer)

            mainframe

            workstation

            server



5. RAM can be treated as the------------for the computer’s processor?

            factory

            operating room
C. waiting room (Answer)

D. planning room



6. Which of the following are the functions of a operating system?

A. Allocates resources

B. Monitors Activities

C. Manages disks and files

D. All of the above (Answer)



7. To move a copy of file from one computer to another over a communication channel is called?


A. File transfer (Answer)

B. File encryption

C. File modification

D. File copying



8. The primary function of the----------is to set up the hardware and load and start an operating system?

A. System Programs

B. BIOS (Answer)

C. CP

D. Memory



9. What kind of memory is both static and non -volatile?

            RAM

            ROM (Answer)

            BIOS

            CACHE



            -------------is computer software designed to operate the computer hardware and to provide platform for running application software?

A. Application software

B. System software (Answer)

C. Software
D. Operating system



            The--------------is the amount of data that a storage device can move from the storage medium to the Computer per second?

A. data migration rate

B. data digitizing rate

C. data transfer rate (Answer)

D. data access rate



12. A device, which is not connected to CPU, is called as-----------?


A. land-line device

B. On-line device

C. Off-line device (Answer)

D. Device



13. What is the other name for programmed chip?

            RAM

            ROM

            LSIC (Answer)

D. PROM



14. On-line real time systems become popular in--------------generation?

A. First Generation

B. Second Generation

C. Third Generation (Answer)

D. Fourth Generation



15. You use a(n)-----------such as a keyboard or mouse, to input information?

A. output device

B. input device (Answer)

C. storage device

D. processing device
            ---------------is the ability of a device to “jump” directly to the requested data?

A. Sequential access

B. Random access (Answer)

C. Quick access

D. All of the above



            -----------------provides process and memory management services that allow two or more tasks, jobs, or programs to run simultaneously?


A. Multitasking (Answer)

            Multithreading

            Multiprocessing

            Multicomputing



18. The task of performing operations like arithmetic and logical operations is called------------?

A. Processing (Answer)

            Storing

            Editing

            Sorting



19. ALU and Control Unit jointly known as----------?

            RAM

            ROM

            CPU (Answer)

            PC



20. RAM is an example of-----------?

A. Secondary memory

B. Primary memory (Answer)

C. Main memory

D. Both (1) and (2)
21. Magnetic disk is an example of------------?

A. Secondary memory (Answer)

B. Primary memory

C. Main memory

D. Both (1) and (2)



22/ Which one of the following is NOT a computer language?

A. MS-Excel (Answer)

            BASIC

            COBOL


D. C++



23. -----------Store data or information temporarily and pass it on as directed by the control unit?

A. Address

B. Register (Answer)

C. Number

D. Memory



24. Select the Odd one from the following

A. Operating system (Answer)

            Interpreter

            Compiler

            Assembler



            A----------------is an additional set of commands that the computer displays after you make a selection from the main menu?

A. dialog box (Answer)

            submenu

            menu selection

            All of the above
26. COBOL is an acronym for----------------?

A. Common Business Oriented Language (Answer)

B. Computer Business Oriented Language

C. Common Business Operated Language

D. Common Business Organized Language



27. All of the following are examples of real security and privacy risks EXCEPT------------?

            hackers

            Spam (Answer)

            Viruses

            identity theft




28. Which of the following is NOT one of the four major data processing functions of a computer?

A. gathering data

B. processing data into information

C. analyzing the data or information (Answer)

D. storing the data or information



29. All of the following are examples of storage devices EXCEPT------------?

A. hard disk drives

B. printers (Answer)

C. floppy disk drives

D. CD drives



30. The CPU and memory are located on the----------?

A. expansion board

B. motherboard (Answer)

C. storage device

D. output device



            --------------is the science that attempts to produce machines that display the same type of intelligence that humans do?
            Nanoscience

            Nanotechnology

            Simulation

            Artificial intelligence (Al) (Answer)



32. Servers are computers that provide resources to other computers connected to a-----------?

A. network (Answer)

            mainframe

            supercomputer

            client




33. When creating a computer program, the------------designs the structure of the program?

A. End user

B. System Analyst (Answer)

            Programmer

            All of the above



34. Computers process data into information by working exclusively with------------?

A. multimedia

            word

            numbers (Answer)

            characters



35. Computers manipulate data in many ways, and this manipulation is called-----------?

            upgrading

            processing (Answer)

            batching

            utilizing



            The ability to recover and read deleted or damaged files from a criminal’s computer is an example of a law enforcement speciality called-----------?
            robotics

            simulation

            computer forensics (Answer)

            animation



37. Where does most data go first with in a computer memory hierarchy ?

A. RAM (Answer)

            ROM

            BIOS

            CACHE




38. The-------------data mining technique derives rules from real-world case examples?

A. Rule discover

B. Signal processing

C. Neural nets (Answer)

D. Case-based reasoning



39. -------------are used to identify a user who returns to a Website?

A. Cookies (Answer)

B. Plug-ins

            Scripts

            ASPs



40. Codes consisting of lines of varying widths or lengths that are computer-readable are known as----------?

A. an ASCII code

B. a magnetic tape

C. an OCR scanner

D. a bar code (Answer)



41. Why is it unethical to share copyrighted files with your friends?

A. It is not unethical, because it is legal.

B. It is unethical because the files are being given for free.
C. Sharing copyrighted files without permission breaks copyright laws. (Answer)

D. It is not unethical because the files are being given for free.



42. Reusable optical storage will typically have the acronym--------?

            CD

            DVD

            ROM

            RW (Answer)



43. The most common type of storage devices are---------?


            Steel

            optical (Answer)

            magnetic

            flash



44. A device that connects to a network without the use of cables is said to be-----------?

            Distributed

            free

            centralized

D. none of these (Answer)



            A person who used his or her expertise to gain access to other people’s computers to get information illegally or do damage is a------------?

A. Hacker (Answer)

            spammer

            instant messenger

            programmer



46. To access properties of an object, the mouse technique to use is-------------?

            Dragging

            dropping

            right-clicking (Answer)
D. shift-clicking



47. A DVD is an example of a (n)-----------?

A. hard disk

B. optical disc (Answer)

C. output device

D. solid-state storage device



48. The process of transferring files from a computer on the Internet to your computer is called-------------?


A. Downloading (Answer)

            uploading

            FTP

            JPEG



49. -----------is the process of dividing the disk into tracks and sectors?

            Tracking

            Formatting (Answer)

            Crashing

            Allotting



50. ASCII is a coding system that provides-------------?

A. 256 different characters

B. 512 different characters

C. 1024 different characters (Answer)

D. 128 different characters



51. Which part of the computer is directly involved in executing the instructions of the computer program?

A. The scanner

B. The main storage

C. The secondary storage

D. The processor (Answer)
52. When a computer is switched on, the booting process performs-----------?

A. Integrity Test

            Power-On Self-Test (Answer)

            Correct Functioning Test

            Reliability Test



53. A computer system that is old and perhaps not satisfactory is referred to as a(n)------------?

A. Ancient system

B. Historical system


C. Age old system

D. Legacy system (Answer)



54. Which of the following is not a binary number?

A. 001

            101

            202 (Answer)

D. 110



55. Which of the following does not store data permanently?

            ROM

            RAM (Answer)

            Floppy Disk

            Hard Disk



56. Which of the following is the smallest storage?

            Megabyte

            Gigabyte

            Terabyte

            None of these (Answer)



57. Which of the following contains permanent data and gets updated during the processing of transactions?
A. Operating System File

B. Transaction file

C. Software File

D. Master file (Answer)



58. A modem is connected to-------------?

A. a telephone line (Answer)

B. a keyboard

C. a printer

D. a monitor




59. Large transaction processing systems in automated organisations use-----------?

A. Online processing

B. Batch Processing (Answer)

            Once-a-day Processing

            End-of-day processing

60. Which of the following is not a storage medium? 


A. Hard disk

B. Flash drive

            DVD

            scanner (Answer)



61. The computer abbreviation KB usually means------------?

A. Key Block

B. Kernel Boot

C. Kilo Byte (Answer)

D. Kit Bit



            The typical computer criminal is a(n)------------? A. Young hacker.
B. Trusted employee with no criminal record. (Answer)

C. Trusted employee with a long, but unknown criminal record.

D. Overseas young cracker.



63. The common name for the crime of stealing passwords is------------?

            Jacking.

            Identity theft.

            Spoofing. (Answer)

            Hacking.




64. Collecting personal information and effectively posing as another individual is known as the crime of-------------?

A. Spooling.

B. Identity theft. (Answer)

C. Spoofing.

D. Hacking.



65. Malicious software is known as------------?

A. Badware.

B. Malware. (Answer)

C. Maliciousware.

D. Illegalware



66. A program that performs a useful task while simultaneously allowing destructive acts is a-----------?

            Worm.

            Trojan horse. (Answer)

            Virus.

            Macro virus



            An intentionally disruptive program that spreads from program to program or from disk to disk is known as a-----------

--?

A. Trojan horse.

B. Virus. (Answer)
C. Time bomb.

D. Time-related bomb sequence.



68. In 1999, the Melissa virus was a widely publicised:------------?

            E-mail virus. (Answer)

            Macro virus.

            Trojan horse.

            Time bomb.



69. What type of virus uses computer hosts to reproduce itself?


A. Time bomb

B. Worm (Answer)

C. Melissa virus

D. Macro virus



70. The thing that eventually terminates a worm virus is a lack of:

A. Memory or disk space. (Answer)

            Time.

            CD drives space.

D. CD-RW.



71. When a logic bomb is activated by a time-related event, it is known as a------------?

            Time-related bomb sequence.

            Virus.

            Time bomb. (Answer)

            Trojan horse.



            What is the name of an application program that gathers user information and sends it to someone through the Internet?

A. A virus

B. Spybot (Answer)

C. Logic bomb
D. Security patch



73. ------------is the measurement of things such as fingerprints and retinal scans used for security access?

A. Biometrics (Answer)

B. Bio measurement

C. Computer security

D. Smart weapon machinery



74. What is the most common tool used to restrict access to a computer system?


A. User logins

B. Passwords (Answer)

C. Computer keys

D. Access-control software



            Hardware or software designed to guard against unauthorized access to a computer network is known as a(n)----------

-?

            Hacker-proof program

            Firewall (Answer)

            Hacker-resistant server

D. Encryption safe wall



76. The scrambling of code is known as-----------?

A. Encryption (Answer)

B. a firewall

            Scrambling

            Password proofing



77. To prevent the loss of data during power failures, use a(n)-------------?

A. Encryption program

B. Surge protector

            Firewall

            UPS (Answer)
78. ----------is defined as any crime completed through the use of computer technology?

A. Computer forensics

B. Computer crime (Answer)

            Hacking

            Cracking



79. -----------refers to electronic trespassing or criminal hacking?

A. Cracking (Answer)


            Jacking

            Spoofing

D. Smarming



80. The first electronic computer was developed by------------?

A. J.V. Attansoff (Answer)

B. Bill Gates

C. Simur Cray

D. Winton Serf



81. -------------computers operates essentially by counting?

A. Portable computer

B. Hybrid computer

C. Analog computer

D. Digital computer (Answer)



82. ------------computer is small general purpose micro computer, but larger than portable computer?

            Hybrid

            Digital

            Desktop (Answer)

            Laptop
83. Cathode Ray Tube is a form of----------?

            Keyboard

            Mouse

            Monitor (Answer)

            Mother board



84. ------------computer is a medium sized computer?

            Micro

            Mainframe

            Super

            Mini (Answer)




85. ---------computer are of large size?

            Micro

            Mainframe (Answer)

            Super

            Mini



86. Note book, laptop,palm,hand-held computers are coming under the category of----------computer?

A. Digital computer

B. Mainframe computer

C. Portable computer (Answer)

D. Hybrid computer



87. Touch Screen is-----------?

A. Input device

B. Output device

C. Both A & B above (Answer)

D. None of these



88. ------------are used for plotting graphs and design on papers?
            Trackball

            Joystick

            Light pen

            Plotters (Answer)



89. ---------------are specific to users’ needs?

A. System software

B. Application software (Answer)

            Assemblers

            Compilers




            “MAN” stands for---------------?

A. Maximum Area Network

B. Minimum Area Network

C. Main Area Network

D. Metropolitan Area Network (Answer)



91. Which of the following is a network topology?

A. LAN

B. WAN

            MAN

            BUS (Answer)



92. VOIP stands for-----------?

A. Voice over IP (Answer)

B. Video over IP

C. Viruses over IP

D. Virtual over IP



93. LAN stands for--------------?

A. Limited Area Network

B. Logical Area Network
C. Local Area Network (Answer)

D. Large Area Network



94. -------------are set of rules and procedures to control the data transmission over the internet?

A. IP address

            Domains

            Protocol (Answer)

            Gateway



95. NOS stands for--------------?


A. Node operating system

B. Non-open software

C. Network Operating system (Answer)

D. Non-operating software



96. ---------------are system software to facilitate editing of text and data?

A. MS Word

B. Editors (Answer)

C. PowerPoint

D. MS publisher



97. Computers, combine both measuring and counting, are called----------------?

            Analog

            Digital

            Hybrid (Answer)

            All of these



98. In world today, most of the computers are-------------?

A. Digital (Answer)

            Hybrid

            Analog

            Complex
99. physical structure of computer is called------------?

            Software

            Hardware (Answer)

            Human ware

            All of these



100. In which type of computer, data are represented as discrete signals?

A. Analog computer


B. Digital computer (Answer)

            both

            Hybrid Computer