Contents Show

Computer MCQs

Find here basic and advance questions of Computer field which help to pass the initial tests of IT Branch officers tess of Pak Army and PAF IT Branch.

Computer Tests are given below which are based on the past exeprience of the students who have applied in Pak Army, Pak navy and Pakistan Air Force to become Information Technology Officer.

Best basic computer MCQs are available hers. Learn and share with friends. For more notes CLICK HERE and for more online practice tests CLICK HERE.

1.	Join Pak Army as an Army Officer	Click Here
2.	Join Pakistan Navy as a Navy Officer	Click Here
3.	Join PAF as a PAF Officer	Click Here

Past papers of Computer Tests

Who is called as Father of Computers? Charles Babbage
The first Digital Computer introduced, was named as?Mark-I
How many generations, computer can be classified? 5
First Generation Computers contain? Vacuum Tubes
II Generation Computers are made of? Transistors
IV Generation Computers contain? LSI
Vth Generation Computers are based on? Artificial Intelligence
Computers, combine both measuring and counting, are called? Hybrid
In world today, most of the computers are? Digital
In any computer installation, how many elements consist? 3
Physical structure of computer is called? Hardware
CPU stands for? Central Processing Unit
In which type of computer, data are represented as discrete signals? Digital computer
Which of the following is available in the form of a PC now? Microcomputer
PARAM is an example of? Super computer
Who developed the analytical engine? Charles Babbage
GUI stands for? Graphical User Interface
The time taken by CPU to retrieve and interpret the instruction to be executed is calledas? Instruction cycle
Which of the following is responsible for all types of calculations? ALU
Which of the following is permanent memory? ROM
The metal or plastic case that holds all the physical parts of the computer is the? System Unit
CD-ROM stands for? Compact Disk Read Only Memory
ALU Stand for? Arithmetic Logic Unit
VGA Stand for? Video Graphics Array
IBM 1401 is? Second Generation Computer
MSI stands for? Medium Scale Integrated Circuits
WAN stands for? Wide Area Network
MICR stands for? Magnetic Ink Character Reader
One byte consists of? eight bits
EEPROM stand for? Electrically Erasable Programmable Read Only Memory
Which of the following is a way to access secondary memory? Random access memory
UNIVAC Stand for?Universal Automatic Computer
The brain of any computer system is? CPU
To rage capacity of magnetic disk depends on? disk pack in disk surface
The two kinds of main memory are? ROM and RAM
A storage area used to store data to a Compensate for the difference in speed at which the different units can handle data is? Buffer
Computer is free from tiresome and boardroom. We call it? Diligence
Which type of computers uses the 8-bit code called EBCDIC? Mainframe computers
The ALU of a computer responds to the commands coming from? Control section
Chief component of first generation computer was? Vacuum Tubes and Valves
To produce high quality graphics (hardcopy) in color, you would want to use a/n? Plotter
One millisecond is? 1000th of a seconds
The output quality of a printer is measured by? Dot per inch
Which of the following was a special purpose computer? ABC
Which of the following storage devices can store maximum amount of data? Hard Disk
Which computer was considered the first electronic computer until 1973 when court invalidated the patent? ENIAC
A physical connection between the microprocessor memory and other parts of the microcomputer is known as? Address bus
High density double sided floppy disks could store of data? 44 MB
A high quality CAD system uses the following for printing drawing and graphs? Digital plotter
The accuracy of the floating-point numbers representable in two 16-bit words of a computer is approximately? 16 digits
In most of the IBM PCs, the CPU, the device drivers, memory, expansion slots and active components are mounted on a single board. What is the name of the board? Motherboard
A technique used by codes to convert an analog signal into a digital bit stream is known as? Pulse code modulation
Regarding a VDU, Which statement is more correct? It is a peripheral device
A modern electronic computer is a machine that is meant for? Input, storage, manipulation and outputting of data
When was vacuum tube invented? 1906
Computer with 80286 Microprocessor is? AT computers
The digital computer was developed primarily in? USA
Software in computer? Enhances the capabilities of the hardware machine
The arranging of data in a logical sequence is called?Sorting
What is the responsibility of the logical unit in the CPU of a computer? To compare numbers
Abacus was the first ? mechanical calculator
If in a computer, 16 bits are used to specify address in a RAM, the number of addresses will be? 65,536
Instructions and memory address are represented by? Binary codes
The terminal device that functions as a cash register, computer terminal, and OCR reader is the? POS terminal
A set of flip flops integrated together is called? Register
Which is used for manufacturing chips? Semiconductors
The first computer introduced in Nepal was? IBM 1401
Mnemonic a memory trick is used in which of the following language? Assembly language
A register organized to allow to move left or right operations is called ?Shift register
Which was the most popular first generation computer? IBM 650
A set of information that defines the status of resources allocated to a process is? Process description
Each set of Napier’s bones consisted of rods? 11
BCD Stand for? Binary Coded Decimal
When was the world’s first laptop computer introduced in the market and by whom? Epson, 1981
From which generation operating systems were developed? Third generation
The first firm to mass-market a microcomputer as a personal computer was? Radio Shak
How many address lines are needed to address each machine location in a 2048 x 4 memory chip? 11
Properly arranged data is called? Information
John Napier invented Logarithm in? 1614
An integrated circuit is? Fabricated on a tiny silicon chip
What Type of control pins are needed in a microprocessor to regulate traffic on the bus, in order to prevent two devices from trying to use it at the same time? Bus arbitration
Whereas a computer mouse moves over the table surface, the trackball is? Stationary
Which of the following is used as a primary storage device? Magnetic drum
Multi user systems provided cost savings for small business because they use a single processing unit to link several? Dumb terminals
The word processing task associated with changing the appearance of a document is? Formatting
When was Pascale invented? 1642
What is required when more than one person uses a central computer at the same time? Terminal
The term gigabyte refers to? 1024 megabytes
in which year was UK’s premier computing event started? 1980
What is the date when Babbage conceived Analytical engine? 1837
What was the expected feature of fifth generation computers when Japan started FGCS? Parallel Processing
Which of the following memory medium is not used as main memory system? Magnetic tape
Computer operators? operate the device which input and output data from the computer
Computers are also called personal computers? Micro Computers
Which of the following is machine independence program? High level language
When was the first electro-mechanical computer developed? 1944
Analog computer works on the supply of? Continuous electrical pulses
The BIOS is the abbreviation of ?Basic Input Output System
Most of the first generation computers were? Special purpose computers
The output quality of a printer is measured by? Dot per sq. inch
On a PC, how much memory is available to application software? 640 KB
In a Computer is capable to store single binary bit? Flip flop
What does DMA stand for? Direct Memory Access
Operating system, editors, and debuggers comes under? System Software
What is the name of the display feature that highlights are of the screen which requires operator attention? Reverse video
Which is the largest computer? Mainframe Computer
The personal computer industry was started by?IBM
What is meant by a dedicated computer? Which is assigned one and only one task
Registers, which are partially visible to users and used to hold conditional, are known as? General purpose register
Registers which are partially visible to users and used to hold conditional codes (bits set by the CPU hardware as the result of operations), are known as? Flags
An approach that permits the computer to work on several programs instead of one is? Over lapped processing
Who suggested Stored Program Concept? John Neumann
The central processing unit (CPU) consists of? Control unit, arithmetic-logic unit and primary storage
The notable features like keyboards, monitors, GUI were developed in? Third generation
Who is credited with the idea of using punch cards to control patterns in a waving machine? Jacquard
What is an interpreter? An interpreter is the representation of the system being designed
RJ45 UTP cable has Cables? 4 pair
Which of the following is not a valid size of a Floppy Disk? 5 ½
The earliest calculating devices are? Abacus
Word length of a Personal Computer is? 8 bits
A directly accessible appointment calendar is feature of a resident package? Memory
Which unit converts computer data into human readable form? Output unit
What produces useful information out of data? Processing
Which of the following device was not invented by Babbage? Pascale
A digital computer did not score over an analog computer in terms of?Accuracy
Which number system is usually followed in a typical 32-bit computer? Binary
A computer has very low failure rate because it uses electronic components. It produces very consistent results. This is highlighted by which of the feature of computer?Reliability
A paper printout of a document is known as? Hardcopy output
Which part of the computer is used for calculating and comparing? ALU
ABC Stand for? Special purpose computer
The computer code for the interchange of information between terminals is? ASCII
When was the X window system born? 1984
What is the first stage in software development? System Analysis
Which of the following is valid statement? Data in itself is useless unless it is processed
EBCDIC stands for? Extended Binary Coded Decimal Interchange Code
Personnel who design, program, operates and maintains computer equipment refers to? People ware
IBM System/360 is? Mainframe Computer
Which of the following programming language started from second generation? Cobol
The translator program used in assembly language is called? Assembler
Which of the following memories allows simultaneous read and Write operations? RAM
EPROM can be used for? Erasing and reconstructing the contents of ROM
A 32 bit microprocessor has the word length equal to? 4 byte
The term GIGO is related to? Accuracy
Web cam is an? input unit device
Bit stands for? Binary digits
Which device can understand difference between data &programs? Microprocessor
Which of the following is a read only memory storage device? CD-ROM
Symbolic logic was discovered by? George Boole
An error in computer data is called?Bug
The instructions for starting the computer are house on? Read only memory chip
1 nibble equals to? 4 bits
Perforated paper used as input of output media is known as? paper tapes
Which American computer company is called Big Blue? IBM
It was in 2028 BS the was brought in to calculate census data? IBM 1401
Which unit holds data temporarily? Primary Memory Unit
The computer size was very large in? First Generation
A name or number used to identify storage location devices? An address
Which of the following is not computer language? Medium level language
Reading data is performed in magnetic disk by? Read/write lead
The term ‘computer’ is derived from? Latin language
To locate a data item for storage is? Fetch
Who used punched cards practically for the first time in the history of computers? Herman Hollerith
Hard disk is coated in both sides with? Magnetic metallic oxide
Which of the following term means to reckon?Put are
Computer professionals working in a computer Centre are? Human ware
The contents of information are stored in? Memory data register
Main storage is also called? Memory
Memory unit is one part of? Central Processing Unit
By programmable machine we mean? computers
Which of the following is a secondary memory device? Disk
The memory which is programmed at the time it is manufactured? PROM
Which of the following memories must be refreshed many times per second? Dynamic RAM
In mode, the communication channel is used in both directions at the same time? Full-duplex
Memory is made up of? Large number of cells
What is the path from which data flow in a computer system is known as? Bus
Which technology is more reliable? Electronic
Raw facts and figures about any particular topic are? data
A computer can solve more than one kind of problem. This is related to which of the following characteristics? Versatility
From which generation computers the printers were used? second
How many symbols exist in Bardot code?32
An application program that helps the user to change any number and immediately see the result of that change is? Spreadsheet
What is the name of the new color laptop computer which is powered by a 386 processor at 33 MHz and is built by Epson? AX3/33
In analog computer? Input is never converted to digital form
When as the Company named IBM?1924
Which of the following storage device can store the largest amount of data? Hard Disks
The octal equivalence of 111010 is? 72
What do you call a single point on a computer screen?Pixel
Mostly which of the following device is used to carry user files? Floppy Disk
An output device that uses words or messages recorded on a magnetic medium to produce audio response is? Voice response unit
Who developed a mechanical device in the 17th century that could add, Subtract, Multiple divide and find square roots? Leibniz
The first Macintosh computer was from? Fourth generation
Which of the following is internal memory? RAM
Floppy disks which are made from flexible plastic material are also called? Diskettes
The magnetic storage chip used to provide non-volatile direct access storage of data and that have no moving parts are known as? Magnetic bubble memory
A collection of related instructions organized for a common purpose is referred to as? Program
Computer instructions written with the use of English words instead of binary machine code is called? Symbolic code
Which language is directly understood by the computer without translation program? Machine language
Which of the following processors use RISC technology? Power PC
Which of the following machine was not invented by Charles Babbage? Tabulating Machine
How many numbers could ENIAC store in its internal memory? 20
The subject of cybernetics deals with the science of? Control and communication
Binary circuit elements have? Two stable state
The value of each bead in earth is?1
Which of the following terms is the most closely related to main memory? Permanent
Which was the world’s first minicomputer and when was it introduced? PDP-I, 1958
A group of magnetic tapes, videos or terminals usually under the control of one master is? Surface
The word length of a computer is measured in?Bits
Which unit holds data permanently? Secondary storage unit
Computer system comprises of major units? input unit, output unit, central processing unit and storage unit
Magnetic tape can serve as? Secondary storage media
Which company is the biggest player in the microprocessor industry? Intel
EBCDIC can code up to how many different characters? 256
Number crunchier is the informal name for? Super computer
RATS stand for? Regression Analysis Time Series
Which technology is used in Compact disks? Laser
The metal disks, which are permanently housed in, sealed and contamination free containers are called? Winchester disk
Intel Corporation produces chips for which computers? IBM PCs
The first microprocessor built by the Intel Corporation was called? 8080
The data recording format in most of the modern magnetic tape is? 8-bit EBCDIC
Who designed the first electronics Computer ? ENIAC/ C) J. P. Eckert and J. W. Muchly
Time during which a job is processed by the computer is? Execution time
Which unit converts user data into machine readable form? Input unit
Which unit is known as nerve center of computer? ALU
Access time is? seek time + latency time
Easily relocatable language is? Assembly language
Through which device the main components of the computer communicate with each other? System Bus
What type of device is computer keyboard? Input
Which is the limitation of high level language? Lower efficiency
The original ASCII code used bits of each byte, reserving that last bit for error checking? 7
A computer programmer? Does all the thinking for a computer
Fifth generation computer is also known as? Knowledge information processing system
A typical personal computer used for business purposes would have of RAM? 256
Model 5100 was in 1957? The first PC built by IBM
Which 8-bit chip was used in many of today’s TRS-80 computers? Z-80
Which of the following disk is fixed disk? Hard Disks
The word Abacus is derived from Abaxis a word from? Latin language
An online backing storage system capable of storing larger quantities of data is? Mass storage
A kind of serial dot-matrix printer that forms characters with magnetically-charged ink sprayed dots is called? Ink-jet printer
Which of the following is an example of fifth generation computer? PIM/m
The number of records contained within a block of data on magnetic tape is defined by the? Blocking factor
Which of the following registers is loaded with the contents of the memory location pointed by the PC? Instruction register
MIS is designed to provide information needed for effective decision making by? Managers
Latency time is? Time to spin the needed data under head
Who built the first Mechanical Calculator? Blaise Pascal
Which of the following generation computers had expensive operation cost? First
An IBM system/38 represents the computer class of? Small-scale computer
Another word for a daisy wheel printer? Golf ball printer
Which computers are used as servers for any medium sized organizations?Mini Computers
Slide Rules was invented in? 1620
A normal CD-ROM usually can store up to data? 680 MB
The lower deck of an abacus is known as? earth
All modern Computers operate on?Data
Offline device is? A device which is not connected to CPU
What is the latest write-once optical storage media? CD-ROM disk
Which one of the following input device is user- programmable? VDT
Floppy disks typically in diameter?3
Current SIMMs have either or connectors (pins)? 30 or 72
Dot-matrix is a type of? Printer
Programs are executed on the basis of a priority number in? Multiprogramming
When was Apple Macintosh II microcomputer introduced in the market? 1983
When was the world’s first laptop computer introduced in the market and by whom? Epson, 1981
Today’s computer giant IBM was earlier known by different name which was changed in 1924. What was that name? The Tabulator Ltd.
Who built the world’s first electronic calculator using telephone relays, light bulbs and batteries? George Stibitz
In which language is source program written? High level
A song being played on computer speaker is? soft output
What is the number of read-write heads in the drive for a 9-trac magnetic tape? 9
Charles Babbage was awarded by Royal Society for his? Difference Engine
A computer which CPU speed around 100 million instruction per second and with the word length of around 64 bits is known as? Super computer
Which of the following will happen when data is entered into a memory location?It will erase the previous content
Which device is used as the standard pointing device in a Graphical User Environment? Mouse
Pick the one that is used for logical operations or comparisons such as less than equal to or greater than? Arithmetic and Logic Unit
Which of the following is used only for data entry and storage, and never for processing? Dumb terminal
Basic is language? a procedural
Which of the following have the fastest access time? Semiconductor Memories
How many types of storage loops exists in magnetic bubble memory? 2
Daisy wheel printer is a type of? Impact printer
A number system that has eight different symbols to represent any quantity is known as? Octal
The two basic types of record access methods are? Sequential and random
One of a class of storage device devices that can access storage locations in any order is?DASD
In what respect human beings are superior to computers? Intelligence
As compared to the secondary memory, the primary memory of a computer is? Fast
The language that the computer can understand and execute is called? Machine language
How was the generation of computer classified? by the device used in memory & processor
CAD stands for? Computer aided design
Which of the following memories has the shortest access times? Cache memory
.A small or intelligent device is so called because it contains within it a? Sensor
Who invented Analytical engine? Charles Babbage
CPU speed of a personal computer is? 100 KIPS
Circular division of disks to store and retrieve data is known as?tracks
The least significant bit of the binary number, which is equivalent to any odd decimal number, is? 0
The latest PC keyboards use a circuit that senses the movement by the change in its capacitance? Capacitance keyboard
The Stepped Reckoner was invented by? Gottfried Leibnitz
While inserting a diskette into the diskette drive of a PC, the diskette’s label side should face? Up
Most of the inexpensive personal computers do not have any disk or diskette drive. What is the name of such computes? Diskless computers
What is a light pen? Optical input device
When a key is pressed on the keyboard, which standard is used for converting the keystroke into the corresponding bits? ANSI
In order to play and hear sound on a computer, one needs? a sound card and speakers
For which of the following computers can’t be used? gathering data
Who invented punched cards? Joseph Jacquard
Which device is required for the Internet connection?Modem

Click Here for more notes of the other Subjects

Basics Computer Science MCQs

1. Mostly which of the following device is used to carry user files?

A. Floppy Disk B. Hard Disk

C. RAM D. CDROM

Answer: A

2. Which device is used to backup the data?

A. Floppy Disk B. Tape

C. Network Drive. D. All of the above

Answer: D

3. In order to play and hear sound on a computer, one needs:

A. a sound card and speakers B. a microphone

C. all of them required D. none of them required

Answer: A

4. Which of the following are the cheapest memory devices in terms of Cost/Bit?

A. Semiconductor memories B. Magnetic Disks

C. Compact Disks D. Magnetic Tapes

Answer: C

5. Which of the following are the best units of data on an external storage device?

A. Bits B. Bytes

C. Hertz D. Clock cycles

Answer: B

6. Which of the following have the fastest access time?

A. Semiconductor Memories B. Magnetic Disks

C. Magnetic Tapes D. Compact Disks

Answer: A

7. Which of the following is a read only memory storage device?

A. Floppy Disk B. CDROM

C. Hard Disk D. None of these

Answer: B

8. Which of the following is a programming language?

A. Lotus B. Pascal

C. MS-Excel D. Netscape

Answer: B

9. What is a compiler?

A. A compiler does a conversion line by line as the program is run

B. A compiler converts the whole of a higher level program code into machine code in one step

C. A compiler is a general purpose language providing very efficient execution

D. None of the above

Answer: B

10. What is an interpreter?

A. An interpreter does the conversion line by line as the program is run

B. An interpreter is the representation of the system being designed

C. An interpreter is a general purpose language providing very efficient execution

D. None of the above

Answer: B

11. When a key is pressed on the keyboard, which standard is used for converting the keystroke into the corresponding bits?

A. ANSI B. ASCII

C. EBCDIC D. ISO

Answer: A

13. A Pixel is ………

A. A computer program that draws picture

B. A picture stored in secondary memory

C. The smallest resolvable part of a picture

D. None of these

Answer: C

14. Which device is used as the standard pointing device in a Graphical User Environment?

A. Keyboard B. Mouse

C. Joystick D. Track ball

Answer: B

15. Which number system is usually followed in a typical 32-bit computer?

A. 2 B. 10

C. 16 D. 32

Answer: A

16. Which number system is usually followed in a typical 32-bit computer?

A. Binary B. Decimal

C. Hexadecimal D. Octal

Answer: A

17. Which of the following is not an output device?

A. Scanner B. Printer

C. Flat Screen D. Touch Screen

Answer: D

18. Which of the following devices have a limitation that we can only store information to it but cannot erase or modify it?

A. Floppy Disk B. Hard Disk

C. Tape Drive D. CDROM

Answer: D

19. Which technology is used in Compact disks?

A. Mechanical B. Electrical

C. Electro Magnetic D. Laser

Answer: D

20. Which of the following storage devices can store maximum amount of data?

A. Floppy Disk B. Hard Disk

C. Compact Disk D. Magneto Optic Disk

Answer: B

21. Which of the following is the largest manufacturer of Hard Disk Drives?

A. IBM B. Seagate

C. Microsoft D. 3M

Answer: B

22. The programs which are as permanent as hardware and stored in ROM is known as

A. Hardware B. Software

C. Firmware D. ROM ware

Answer: C

23. Memory unit is one part of

A. Input device B. Control unit

C. Output device D. Central Processing Unit

Answer: D

24.Who built the first Mechanical Calculator

A. Joseph Marie Jacquard B. John Mauchly

C. Blaise Pascal D. Howard Aiken

Answer: C

25. The earliest calculating devices are

A. Abacus B. Clock

C. Difference Engine D. None of these

Answer: A

26. Punched cards were first introduced by

A. Powers B. Pascal

C. Jacquard D. Herman Hollerith

Answer: D

27. Word length of a Personal Computer is ___

A. 4 bits B. 8 bits

C. 16 bits D. 64 bits

Answer: B

28. Cursor is a ____

A. Pixel B. Thin blinking line

C. Pointing device D. None of these

Answer: B

29. Operating system, editors, and debuggers comes under?

A. System Software B. Application Software

C. Utilities D. None of the above

Answer: A

30. Which device is required for the Internet connection?

A. Joystick B. Modem

C. CD Drive D. NIC Card

Answer: B

31. What does DMA stand for?

A. Distinct Memory Access B. Direct Memory Access

C. Direct Module Access D. Direct Memory Allocation

Answer: B

32. When did John Napier develop logarithm?

A. 1416 B. 1614

C. 1641 D. 1804

Answer: B

33. A normal CD-ROM usually can store up to __________data?

A. 680 KB B. 680 Bytes

C. 680 MB D. 680 GB

Answer: C

34. ATM stands for?

A. Automatic Talking Machine

B. Automatic Teller Machine

C. Analog Teller Machine

D. Automatic Ticketing Machine

Answer:B

35. The Second Generation Computer was based on ………….

A. Vacuum Tube B. Silicon Chips

C. Transistor D. Bio Chips

Answer: C

36. The Third Generation Computer was made with ………….

A. Vacuum Tube B. Discrete Components

C. IC D. Bio Chips

Answer: C

37. he BIOS is the abbreviation of ………….

A. Basic Input Output System B. Best Input Output System

C. Basic Input Output Symbol D. Base Input Output System

Answer: A

38. What do you call a single point on a computer screen

A. Cell B. Element

C. Pixel D. Bit

Answer: C

39. How was the generation of computer classified?

A. by the device used in memory & processor

B. by the speed of computer

C. by the model of the computer

D. by the accuracy of computer

Answer: A

40. Through which device the main components of the computer communicate with each other?

A. Keyboard B. System Bus

C. Monitor D. Memory

Answer: B

41. Which is a valid program to access the Internet?

A. Access B. Front Page

C. Windows Explorer D. Netscape

Answer: D

42. Which one is the Low Level Language?

A. Assembly B. Visual Basic

C. Java D. C++

Answer: A

43. Which is a volatile memory?

A. ROM B. BIOS

C. PROM D. RAM

Answer: D

44. The digital signals can be represented by

A. Binary Codes B. 0 and 1

C. High and Low D. all of the above

Answer: D

45. Which program can be used for email?

A. Internet Explorer B. Outlook Express

C. NetMeeting D. FrontPage

Answer: B

46. Modulator-demodulator is a device that converts:

A. Digital signal into analog signal

B. Analog signal into digital signal

C. Both A and B

D. None of the above

Answer: C

47. _______ is used for scanning the pictures and putting them in digitized form in the computer.

A. CD-ROM B. Plotter

C. Bar-coder D. Scanner

Answer: D

48. Animator, 3D Studio, Corel Draw and Flash are………….

A. Word processors B. Spreadsheet packages

C. Multimedia S/W D. None of the above

Answer: C

49. Which statement is valid?

A. 1 KB = 8 bytes B. 1 MB = 8 KB

C. 1 KB = 1024 bytes D. 1 MB = 1024 bytes

Answer: C

50. Which device is used to process data?

A. CPU B. RAM

C. DCU D. VDU

Answer: A

51. Who is known as the father of Computer Science?

A. Charles Babbage B. Howard Aiken

C. Dr. Herman Hollerith D. Blaise Pascal

Answer: A

52. What is the capacity of a 3.5” Floppy Disk?

A. 360KB B. 720KB

C. 1.2MB D. 1.44MB

Answer: D

53. A Personal Computer (PC) is a …………….. Computer.

A. Super B. Main Frame

C. Mini D. Micro

Answer: D

54. What type of printers are Dot Matrix Printers?

A. Laser B. Inkjet

C. Impact D. Drum

Answer: C

55. What is the full form of RAM?

A. Read Access Memory B. Random Access Memory

C. Rapid access Memory D. none

Answer: B –

General Knowledge of Computer

VDU stands for	Visual Display Unit
One kilobyte is approximately	1000 bytes
DOS stands for	Disk Operating System
WORD STAR is a popular	Word processing programme
WORD STAR was developed by	Micro pro Company
PC stands for	Personal Computer
ALU stands for	Arithmetic Logic Unit
The VDU and Keyboard together form a	TERMINAL
The speed of the dot matrix printers is measured by CPS which stands for	characters per second
The speed of the line printers is measured by LPM which stands for	Lines per second
DBMS stands for	Database Management System
IBM is a famous computer company.IBM stands for	International Business Machines Corporation
ROM stands for	Read Only Memory
The actual machine of the computer is commonly known as	Hardware
The programs run on the computer are commonly known as	Software
All the output which is printed on paper is called	Hard Copy
The number of pixels on a computer screen determines a screen’s	Resolution
A processor’s speed is measured in	Megahertz
A software that assists the computer in performing instructions, is called as	system software
CAM stands for	Computer Aided Manufacturing
DPI stands for	Dots per Inch
DTP stands for	Desk Top Publishing
EPROM stands for	erasable and Programmable Read only Memory
A magnetic storage disk made out of a thin piece of plastic is called	Floppy Disk
A pictorial representation of the step by step sequence for solving a problem is known as a	Flow Chart
A measure of storage capacity equal to one thousand megabytes is one	Gigabyte
A variable whose value is accessible throughout the program is called	Global Variable
A huge, worldwide network of computers that communicate with each other, allowing global communications between users is known popularly known as	Internet
KB stands for	Kilobyte
LAN stands for	Local Area Network
A printer which uses light to transfer the image to paper is the	Laser Printer
Memory which retains all its contents even after the power is turned off is known as	Non-Volatile Memory
The result that is generated by the computer after processing the information provided to it is known as	Output
Electronic mail is more popularly known as	E-Mail
PILOT stands for	Programmed Inquiry Learning Or Teaching
PILOT was developed by	Doug Engelbardt
IQL stands for	Interactive Query Language
LOGO was developed by	Dr.seymour Papert
CAL stands for	Computer Assisted Learning
APT stands for	Automatically Programmed Tooling
`C’language was invented by	Dennis M.Ritchie
Modula-2 was developed by	Niklaus Wirth
Terminals that have their own memory are called	Smart terminals
The memory that needs electric power to sustain its contents is known as	Volatile Memory
MOS stands for	Metallic Oxide Semiconductors
Dvorak key board was designed by	August Dvorak
A simple device which functions as a simpler alternative to the keyboard is the	Mouse
Automatic drawing input device is called	Scanner
In the second generation computers, magnetic cores were used as	Main Memory Devices
LCD stands for	Liquid Crystal Display
RADAR stands for	Radio Detection and Ranging
RADAR works on the principle of	Echo
software-in-Hardware modules are called	Firmware
A device by which any microcomputer can use ordinary television set for producing output is called	RF modulator
EDSAC stands for	Electronic Delayed Storage Automatic Computer
EDVAC stands for	Electronic Discrete Variable Automatic Computer
EDSAC was developed in the year	1949
EDVAC was developed in the year	1952
ENIAC stands for	Electronic Numerical Integrator and Calculator
The most successful computing device in the ancient time was	Abacus
Use of some mechanism for the operation of a machine is known as	Automation
Radar contact with the moon was first made in	1945
Radar contact with Venus was first made in	1961
A system in which information is displayed on a television screen is known as	Video Text System
A modern means of communication in which the information is stored in a computer at a TV station is known as	Teletext
Global communication became possible by using	Satellites
Morse code was invented by	Samuel Morse
The code used in a tele printer is the	Baudot Code
Tele printer exchange is popularly known as	Telex
A device which converts sound waves into electrical waves is called	Microphone
AVC stands for	Automatic Volume Control
The device used to measure wavelengths of radio waves is	Wavemeter
A hollow metallic tube used in place of wire in electric circuits carrying high frequency currents is called	Waveguide
An instrument used to measure the intensity of radiations is the	Radiometer
An instrument used to measure electrical voltage is the	Voltmeter
VTVM stands for	Vacuum Tube Volt Meter
A circuit which maintains a constant voltage is called	Voltage Stabilizer
SCR stands for	Silicon Controlled Rectifier
A device used to increase or decrease electric voltage is called a	Transformer
A magnetic tape that records both audio and video signals is called a	Video Tape
The first electronic calculator was manufactured in 1963 by	Bell Punch Company, USA
MASER stands for	Microwave Amplification by stimulated Emission of Radiation
A computer which can handle a large volume of numbers is called a	Number cruncher
POST stands for	Power on Self Test
POST is a test carried out just after the computer has been	Switched on
An index of the files stored on a disk is called	Directory
CP/M stands for	Control program for Microcomputers
CP/M was developed by	digital Research Inc.,USA
MVS stands for	Multiple Virtual Storage Operating System
MVS is used in	Mainframe computers
The process of starting a computer is called	Booting
A group of four binary digits is called a	NIBBLE
BPI stands for	Bit per Inch
A smart card is a	multifunctional microprocessor
LIPS stands for	Logical Inferences Per Second
A computerized machine is normally called a	Robot
A robot is a machine directed by a	Computer
A robot which resembles a human being is called an	Android
PL/1 stands for	Programme Language-1
The language PL/1 has combined features of	COBOL and FORTRAN
BASIC stands for	Begineers All Purpose Symbolic Instruction Code
COBOL stands for	Common Busines Oriented Language
ALGOL stands for	Algorithmic Language
ALGOL was developed in the early 1960s in	Europe
COBOL was first introduced in the year	1961
FORTRAN stands for	Formula Translation
FORTRAN was developed and introduced by IBM in the year	1957
PL/1 was introduced in the 1960s by	IBM
COMAL stands for	Common Algorithmic Language
BASIC was developed by	John Kemeny and Thomas Kurtz
SNOBOL stands for	String Oriented Symbolic Language
SNOBOL was developed in	1962
LISP stands for	List Processing Language
LISP was developed by	John McCarthy
Loud speaker was invented by	Rice Kellogg
PROM stands for	Programmable Read Only Memory
Two types of RAM chips are	Dynamic, static
Data is fed into the computer by first converting it into	Binary codes

Short Keys in MS Word

Shortcut	Description
Ctrl + 0	Toggles 6pts of spacing before a paragraph.
Ctrl + A	Select all contents of the page.
Ctrl + B	Bold highlighted selection.
Ctrl + C	Copy selected text.
Ctrl + D	Open the font preferences window.
Ctrl + E	Aligns the line or selected text to the center of the screen.
Ctrl + F	Open find box.
Ctrl + I	Italic highlighted selection.
Ctrl + J	Aligns the selected text or line to justify the screen.
Ctrl + K	Insert a hyperlink.
Ctrl + L	Aligns the line or selected text to the left of the screen.
Ctrl + M	Indent the paragraph.
Ctrl + N	Opens new, blank document window.
Ctrl + O	Opens the dialog box or page for selecting a file to open.
Ctrl + P	Open the print window.
Ctrl + R	Aligns the line or selected text to the right of the screen.
Ctrl + S	Save the open document. Just like Shift + F12.
Ctrl + T	Create a hanging indent.
Ctrl + U	Underline the selected text.
Ctrl + V	Paste.
Ctrl + W	Close the currently open document.
Ctrl + X	Cut selected text.
Ctrl + Y	Redo the last action performed.
Ctrl + Z	Undo last action.
Ctrl + Shift + L	Quickly create a bullet point.
Ctrl + Shift + F	Change the font.
Ctrl + Shift + >	Increase selected font +1pts up to 12pt and then increase font +2pts.
Ctrl + ]	Increase selected font +1pts.
Ctrl + Shift + <	Decrease selected font -1pts if 12pt or lower; if above 12, decreases font by +2pt.
Ctrl + [	Decrease selected font -1pts.
Ctrl + / + c	Insert a cent sign (¢).
Ctrl + ‘ +	Insert a character with an accent (grave) mark, where is the character you want. For example, if you wanted an accented è you would useCtrl + ‘ + e as your shortcut key. To reverse the accent mark use the opposite accent mark, often on the tilde key.
Ctrl + Shift + *	View or hide non printing characters.
Ctrl +	Moves one word to the left.
Ctrl +	Moves one word to the right.
Ctrl +	Moves to the beginning of the line or paragraph.
Ctrl +	Moves to the end of the paragraph.
Ctrl + Del	Deletes word to right of cursor.
Ctrl + Backspace	Deletes word to left of cursor.
Ctrl + End	Moves the cursor to the end of the document.
Ctrl + Home	Moves the cursor to the beginning of the document.
Ctrl + Spacebar	Reset highlighted text to the default font.
Ctrl + 1	Single-space lines.
Ctrl + 2	Double-space lines.
Ctrl + 5	1.5-line spacing.
Ctrl + Alt + 1	Changes text to heading 1.
Ctrl + Alt + 2	Changes text to heading 2.
Ctrl + Alt + 3	Changes text to heading 3.
Alt + Ctrl + F2	Open new document.
Ctrl + F1	Open the Task Pane.
Ctrl + F2	Display the print preview.
Ctrl + Shift + >	Increases the selected text size by one.
Ctrl + Shift + <	Decreases the selected text size by one.
Ctrl + Shift + F6	Switches to another open Microsoft Word document.
Ctrl + Shift + F12	Prints the document.
F1	Open Help.
F4	Repeat the last action performed (Word 2000+)
F5	Open the Find, Replace, and Go To window in Microsoft Word.
F7	Spellcheck and grammar check selected text or document.
F12	Save As.
Shift + F3	Change the text in Microsoft Word from uppercase to lowercase or a capital letter at the beginning of every word.
Shift + F7	Runs a Thesaurus check on the selected word.
Shift + F12	Save the open document. Just like Ctrl + S.
Shift + Enter	Create a soft break instead of a new paragraph.
Shift + Insert	Paste.
Shift + Alt + D	Insert the current date.
Shift + Alt + T	Insert the current time.

Short Keys of Computer with Mouse

Mouse shortcuts	Description
Click, hold, and drag	Selects text from where you click and hold to the point you drag and let go.
Double-click	If double-clicking a word, selects the complete word.
Double-click	Double-clicking on the left, center, or right of a blank line makes the alignment of the text left, center, or right aligned.
Double-click	Double-clicking anywhere after text on a line will set a tab stop.
Triple-click	Selects the line or paragraph of the text that the mouse triple-clicked on.
Ctrl + Mouse wheel	Zooms in and out of document.

Short Keys in MS Excel

Shortcut	Description
F2	Edit the selected cell.
F3	After a name has been created, F3 will paste names.
F4	Repeat last action. For example, if you changed the color of text in another cell, pressing F4 will change the text in cell to the same color.
F5	Go to a specific cell. For example, C6.
F7	Spell check selected text or document.
F11	Create chart from selected data.
Ctrl + Shift + ;	Enter the current time.
Ctrl + ;	Enter the current date.
Alt + Shift + F1	Insert New Worksheet.
Alt + Enter	While typing text in a cell, pressing Alt + Enter will move to the next line, allowing for multiple lines of text in one cell.
Shift + F3	Open the Excel formula window.
Shift + F5	Bring up search box.
Ctrl + 1	Open the Format Cells window.
Ctrl + A	Select all contents of the worksheet.
Ctrl + B	Bold highlighted selection.
Ctrl + I	Italic highlighted selection.
Ctrl + K	Insert link.
Ctrl + S	Save the open worksheet.
Ctrl + U	Underline highlighted selection.
Ctrl + 1	Change the format of selected cells.
Ctrl + 5	Strikethrough highlighted selection.
Ctrl + P	Bring up the print dialog box to begin the printing process.
Ctrl + Z	Undo last action.
Ctrl + F3	Open Excel Name Manager.
Ctrl + F9	Minimize current window.
Ctrl + F10	Maximize currently selected window.
Ctrl + F6	Switch between open workbooks or windows.
Ctrl + Page up	Move between work sheets in the same document.
Ctrl + Page down	Move between work sheets in the same document.
Ctrl + Tab	Move between Two or more open Excel files.
Alt + =	Create a formula to sum all of the above cells.
Ctrl + ‘	Insert the value of the above cell into the cell currently selected.
Ctrl + Shift + 1	Format number in comma format.
Ctrl + Shift + 4	Format number in currency format.
Ctrl + Shift + 3	Format number in date format.
Ctrl + Shift + 5	Format number in percentage format.
Ctrl + Shift + 6	Format number in scientific format.
Ctrl + Shift + 2	Format number in time format.
Ctrl + Arrow key	Move to next section of text.
Ctrl + Space	Select entire column.
Shift + Space	Select entire row.
Ctrl + –	Delete the selected column or row.
Ctrl + Shift + =	Insert a new column or row.
Ctrl + Home	Move to cell A1.
Ctrl + ~	Switch between showing Excel formulas or their values in cells.

Shortcut Keys of Computer

Ctrl+W. Close the active window / document.

Ctrl+Z. Undo an action.

Ctrl+Y. Redo the last action or repeat an action.

Ctrl+S. Save a document.

Ctrl+P. Print a document.

Ctrl+K. Insert a hyperlink.

Alt+Left. Arrow Go back one page.

Alt+Right. Arrow Go forward one page.

Ctrl+C. Copy selected text or graphics to the Office Clipboard.

Ctrl+V. Paste the most recent addition to the Office Clipboard.

Ctrl+Shift+A. Format all letters as capitals.

Ctrl+B. Applies or removes bold formatting.

Ctrl+I. Applies or removes italic formatting.

Ctrl+=. Apply subscript formatting (automatic spacing).

Alt, F, A. Save As.

Alt, S, T, I. Insert Table of Contents.

Alt, S, T, R. Remove Table of Contents.

Alt, W, F. Full Screen Reading – View > Document Views > Full Screen Reading.

Alt, W, R. Ruler. View > Show/Hide > Ruler.

Alt, F, X. Exit Word.

Fundamental Questions of Computer- 2020

is a category of computer hardware. (Input, Output, Storage, Processing, all of the above)
is an important component of microcomputer system. (Kilobyte, Microprocessor, Megabyte, Byte, None of the above)
is not found in P.U.

(ALU, Control Unit, RAM, Processing Register)

is a type of impact printers. (Laser, Thermal, Dot-Matrix, Inkjet)
program design technique shows program logic. (Flow chart, Logical Operation, Computer, None of the above)
is used as counter in BASIC programs. (A = A+1, A<1, A or 1, None of the above)
characteristic is applied to the third generation of computers. (Integrated Circuit, Transistor, Vacuum Tubes, All of the above)
The most important characteristic of ROM is .

(It performs mathematical calculation, it is volatile, it is non – volatile, None of the above)

statement is used to transfer the control of program conditionally. (GOTO, ON GOTO, END, All of the above)
Disk operating system is abbreviated as . (DOS, DS, OS, None of above)
is an example of integer data. (HASAN, D-143, 143, all of the above)
High level languages were designed in . (Laboratory, Third generation, Computers, New York)
is a high level language. (BASIC, BESIK, BACIK, BESIC)
Binary number system has .

(Ten digits (0,9), Three digits (-1,0,1), One digit (1), Two digits (0,1))

LET statement is .

(Optional statement, Assigning statement, Used for expression assignment, all of the above)

DATA statement is .

(Executable statement, Non-executable statement, Optional statement, None of the above)

BASIC stands for .

(Basic All-purpose Symbolic Instructon Code, Beginners Assembly Symbols Instruction Code, Basic All Standards In COBOL, Beginners All-purpose Symbolic Instruction Code)

When using READ statement, it must to provide .

(PRINT statement, RESTORE statement, INPUT statement, None of above)

ANSI stands for .

(All New Small Integration, A National Small Institute, American National Standard Institute, None of the above)

Sign of exclamation is . (!, :, I, %)
The example of random access storage media is . (Floppy disk drive, Hard disk drive, Tape unit, 51/4’’ floppy disk)
The type of memory whose contents can not be changed is .

(ROM, RAM, Cache, EAPROM)

The command to see the contents of a disk is .

(DIR, CD, MD, TYPE)

DISKCOPY command can format the destination disk . (Before copying, after copying, can not format, format while copying)
TYPE command is used to .

(To see the contents of a file, Chage the type of a file, make a sub directory, Type a file in the computer)

Each statement of BASIC must have a . (Function, Statement number, Program name, File name)
The command to create a sub-directory is . (DIR, CD, MD, APPEND)
TAB () function is used to .

(Print, Display, Print and Display, None of the above)

MS Office MCQs

Types of software programs usually includes

application programs
replicate programs
mathematical operations
both a and b

ANS D

MCQ: Set of programs with full set of documentation is considered as

database packages
file package
software
software packages

ANS D

MCQ: Specialized program that allows users to utilize in specific application is classified as

relative programs
application programs
relative programs
replicate programs

ANS B

MCQ: Programs used to control system performance are classified as

experimental programs
system programs
specialized program
organized programs

ANS B

MCQ: System programs examples includes

operating system of computer
trace program
compiler
all of above

ANS D

Program which is readily available to computer users as part of software package is

classified as

library program
program library
software library
directory library

ANS A

MCQ: Process to exit from computer by giving correct instructions such as ‘EXIT’ is classified as

log in
process out
process in
log out

ANS D

MCQ: Set of software authorized to specific users is considered as

software library
program library
directory library
library package

ANS B

MCQ: Function of running and loading programs and usage of peripherals is function of

operating system
enquiry system
dump programs
function system

ANS A

MCQ: If program can cope data errors, program is called

robust
reliable
unreliable
stable functioning

ANS A

MCQ: Commercial organization specializing preparation and design of software package is classified as

library house
software houses
program houses
directory houses

ANS B

MCQ: Programs are fully tested and documented properly before including it into

library
directory
package
database

ANS A

MCQ: Program which is used to produce pictures and text and to organize it in newspaper is classified as

text publishing package
desktop publishing package
experimental package
organizing publishing package

ANS B

MCQ: Several programs run at same time and storage is shared especially in

microcomputers
mainframe computers
enquiry computers
dump computers

ANS B

MCQ: Program which exactly perform operations that manual says is classified as

unreliable
stable functioning
robust
reliable

ANS D

Special set of characters that computer associates with specific user identification is classified as

password
identity code
enquiry code
dump code

ANS A

MCQ: System program which performs one simple task is classified as

utility programs
function program
compiling program
enquiry program

ANS A

MCQ: Record of programs recorded as they run is classified as

producing a log
producing enquiry
producing dump programs

producing system functions

ANS A

MCQ: Program provides users with grid of rows and columns is classified as

spreadsheet
column grid
rows grid
reliability grid

ANS A

MCQ: Program packages that allows program users to design data files and select information are called

file management
file enquiry
database package
all of above

ANS D

Collection of useful working routines and programs and is only available to users with authorization is classified as

directory library
library package
program library
software library

ANS C

MCQ: Programs written by programmer to help computer users are considered as

software
software packages
database packages
file package

ANS A

MCQ: Set of software is held central by

computer installation
computer software
library files
directory files

ANS A

MCQ: Program used to transfer contents onto a printer from VDU screen is classified as

utility dump
screen dump
function dump
enquiry dump

ANS B

MCQ: In microcomputers, operating system is usually stored on

random access memory
read only memory
permanent memory
temporary memory

ANS B

System software’s are supplied by the

text slots
payroll programmers
manufacturer
enquiry programmers

ANS C

MCQ: Slots in spreadsheet that can be copied to other slots are classified as

relative slots
replicate slots
complicate slots
column slots

ANS B

MCQ: Process of gaining access to a computer by giving correct user identification is classified as

process in
log out
log in
process out

ANS C

MCQ: Typing of words on keyboard to drive program with help of

menu
command
function words
editor

ANS B

MCQ: Library program may comes from

computer manufacturer
within computer installation
software houses
all of above

ANS D

Program produces experimental results for biologist research is classified as

specialized program
systematic programs
organized programs
experimental programs

ANS A

MCQ: Number and name system uses to identify user is called

user identification
operating identification
system identification
temporary identification

ANS A

MCQ: Slots in spreadsheet whose formula is not exactly copied are classified as

complicate slots
column slots
relative slots
replicate slots

ANS C

MCQ: Application program example includes

payroll program
desktop program
publishing program
editing program

ANS A

MCQ: Process of checking software suitability for any particular application is classified as

evaluation of software
checking of software
directory of software
database of software

ANS A

Software which controls general operations of computer system is classified as

dump programs
function system
operating system
enquiry system

ANS C

MCQ: Application program used with all documentation is considered

applications package
replicate programs
application programs
systems programs

ANS A

1. System software is classified into

Operating system
Language processor
Both (a) and (b)
None of these

ANS C

2. Which one of the following is not a type of a language processor?

Compiler
Interpreter
Application software
Assembler

ANS C

3. Which one of the following utilities is used to store duplicate or multiple copies of important files?

Antivirus
Disk defragmenter
Compression utility
Backup utility

ANS D

4. Which one of the following software is developed according to the user requirement?

Operating system
System software
Customized software
Language processor

ANS C

5. Which of the following language uses only numbers such as 0s and 1s?

First generation language
Second generation language
Third generation language
Fourth generation language

ANS A

6. The assembly language uses symbols instead of numbers which are known as

Compiler
Mnemonics
Interpreter
All of these

ANS B

Gen Knowledge

How to Gain Weight?

04/02/202328/02/2023

Pakistan Air Force

PAF Online Registration

28/01/202328/01/2023

Pakistan Army

PMA Registration

27/01/202305/03/2023