Computer MCQs for Jobs in Pakistan

Computer MCQs for Jobs in Pakistan

this article we are going to give you the 500+ COMPUTER MCQs with answers For jobs , These MCQs are taken from various Jobs test of National Testing Service, CSS, PMS, KPPSC, PPSC and other competitive exams of Pakistan.


We have collected all the data and we have tried to provide you the best information related to Computer MCQs from basic to advance level with their answers. These Computer MCQs will help you for the Preparation of Job Test, Interview, and competitive exams, etc. These Computer MCQs will help you to secure maximum marks in upcoming NTS, CSS, PMS, KPPSC, PPSC and other competitive exams of Pakistan.

Computer MCQs with answers For jobs

1. Who is called as Father of Computers?Charles Babbage
2. The first Digital Computer introduced, was named as?Mark-I
3. How many generations, computer can be classified? 5
4. First Generation Computers contain? Vacuum Tubes
5. II Generation Computers are made of? Transistors
6. IV Generation Computers contain? LSI
7. Vth Generation Computers are based on? Artificial Intelligence
8. Computers, combine both measuring and counting, are called? Hybrid
9. In world today, most of the computers are? Digital
10. In any computer installation, how many elements consist? 3
11. Physical structure of computer is called? Hardware
12. CPU stands for? Central Processing Unit
13. In which type of computer, data are represented as discrete signals? Digital computer
14. Which of the following is available in the form of a PC now? Microcomputer
15. PARAM is an example of? Super computer
16. Who developed the analytical engine? Charles Babbage
17. GUI stands for? Graphical User Interface
18. The time taken by CPU to retrieve and interpret the instruction to be executed is calledas? Instruction cycle
19. Which of the following is responsible for all types of calculations? ALU
20. Which of the following is permanent memory? ROM
21. The metal or plastic case that holds all the physical parts of the computer is the? System Unit
22. CD-ROM stands for? Compact Disk Read Only Memory
23. ALU Stand for? Arithmetic Logic Unit
24. VGA Stand for? Video Graphics Array
25. IBM 1401 is? Second Generation Computer
26. MSI stands for? Medium Scale Integrated Circuits
27. WAN stands for? Wide Area Network
28. MICR stands for? Magnetic Ink Character Reader
29. One byte consists of? eight bits
30. 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

1. 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
2. A technique used by codes to convert an analog signal into a digital bit stream is known as? Pulse code modulation
3. Regarding a VDU, Which statement is more correct? It is a peripheral device
4. A modern electronic computer is a machine that is meant for? Input, storage, manipulation and outputting of data
5. When was vacuum tube invented? 1906
6. Computer with 80286 Microprocessor is? AT computers
7. The digital computer was developed primarily in? USA
8. Software in computer? Enhances the capabilities of the hardware machine
9. The arranging of data in a logical sequence is called? Sorting
10. What is the responsibility of the logical unit in the CPU of a computer? To compare numbers
11. Abacus was the first ? mechanical calculator
12. If in a computer, 16 bits are used to specify address in a RAM, the number of addresses will be? 65,536
13. Instructions and memory address are represented by? Binary codes
14. The terminal device that functions as a cash register, computer terminal, and OCR reader is the? POS terminal
15. A set of flip flops integrated together is called? Register
16. Which is used for manufacturing chips? Semiconductors
17. The first computer introduced in Nepal was? IBM 1401
18. Mnemonic a memory trick is used in which of the following language? Assembly language
19. A register organized to allow to move left or right operations is called ?Shift register
20. Which was the most popular first generation computer? IBM 650
21. A set of information that defines the status of resources allocated to a process is? Process description
22. Each set of Napier’s bones consisted of rods? 11
23. BCD Stand for? Binary Coded Decimal
24. When was the world’s first laptop computer introduced in the market and by whom? Epson, 1981
25. From which generation operating systems were developed? Third generation
26. The first firm to mass-market a microcomputer as a personal computer was? Radio Shak
27. How many address lines are needed to address each machine location in a 2048 x 4 memory chip? 11
28. Properly arranged data is called? Information
29. John Napier invented Logarithm in? 1614
30. An integrated circuit is? Fabricated on a tiny silicon chip
31. 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
32. Whereas a computer mouse moves over the table surface, the trackball is? Stationary
33. Which of the following is used as a primary storage device? Magnetic drum
34. Multi user systems provided cost savings for small business because they use a single processing unit to link several? Dumb terminals
35. The word processing task associated with changing the appearance of a document is? Formatting
36. When was Pascale invented? 1642
37. What is required when more than one person uses a central computer at the same time? Terminal
38. The term gigabyte refers to? 1024 megabytes
39. in which year was UK’s premier computing event started? 1980
40. What is the date when Babbage conceived Analytical engine?  1837

41.  ·  What was the expected feature of fifth generation computers when Japan started FGCS? Parallel Processing

42.  ·  Which of the following memory medium is not used as main memory system? Magnetic tape

43.  ·  Computer operators? operate the device which input and output data from the computer

44.  ·  Computers are also called personal computers? Micro Computers

45.  ·  Which of the following is machine independence program? High level language

46.  ·  When was the first electro-mechanical computer developed? 1944

47.  ·  Analog computer works on the supply of? Continuous electrical pulses

48.  ·  The BIOS is the abbreviation of ?Basic Input Output System

49.  ·  Most of the first generation computers were? Special purpose computers

50.  ·  The output quality of a printer is measured by? Dot per sq. inch

51.  ·  On a PC, how much memory is available to application software? 640 KB

52.  ·  In a Computer is capable to store single binary bit? Flip flop

53.  ·  What does DMA stand for? Direct Memory Access

54.  ·  Operating system, editors, and debuggers comes under? System Software

55.  ·  What is the name of the display feature that highlights are of the screen which requires operator attention? Reverse video

56.  ·  Which is the largest computer? Mainframe Computer

57.  ·  The personal computer industry was started by? IBM

58.  ·  What is meant by a dedicated computer? Which is assigned one and only one task

59.  ·  Registers, which are partially visible to users and used to hold conditional, are known as? General purpose register

60.  ·  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

61.  ·  An approach that permits the computer to work on several programs instead of one is? Over lapped processing

62.  ·  Who suggested Stored Program Concept? John Neumann

63.  ·  The central processing unit (CPU) consists of? Control unit, arithmetic-logic unit and primary storage

64.  ·  The notable features like keyboards, monitors, GUI were developed in? Third generation

65.  ·  Who is credited with the idea of using punch cards to control patterns in a waving machine? Jacquard

66.  ·  What is an interpreter? An interpreter is the representation of the system being designed

67.  ·  RJ45 UTP cable has Cables? 4 pair

68.  ·  Which of the following is not a valid size of a Floppy Disk? 5 ½

69.  ·  The earliest calculating devices are? Abacus

70.   ·  Word length of a Personal Computer is? 8 bits

71. A directly accessible appointment calendar is feature of a resident package? Memory
72. Which unit converts computer data into human readable form? Output unit
73. What produces useful information out of data? Processing
74. Which of the following device was not invented by Babbage? Pascale
75. A digital computer did not score over an analog computer in terms of? Accuracy
76. Which number system is usually followed in a typical 32-bit computer? Binary
77. 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
78. A paper printout of a document is known as? Hardcopy output
79. Which part of the computer is used for calculating and comparing? ALU
80. ABC Stand for? Special purpose computer
81. The computer code for the interchange of information between terminals is? ASCII
82. When was the X window system born? 1984
83. What is the first stage in software development? System Analysis
84. Which of the following is valid statement? Data in itself is useless unless it is processed
85. EBCDIC stands for? Extended Binary Coded Decimal Interchange Code
86. Personnel who design, program, operates and maintains computer equipment refers to? People ware
87. IBM System/360 is? Mainframe Computer
88. Which of the following programming language started from second generation? Cobol
89. The translator program used in assembly language is called? Assembler
90. Which of the following memories allows simultaneous read and Write operations? RAM
91. EPROM can be used for? Erasing and reconstructing the contents of ROM
92. A 32 bit microprocessor has the word length equal to? 4 byte
93. The term GIGO is related to? Accuracy
94. Web cam is an? input unit device
95. Bit stands for? Binary digits
96. Which device can understand difference between data &programs? Microprocessor
97. Which of the following is a read only memory storage device? CD-ROM
98. Symbolic logic was discovered by? George Boole
99. An error in computer data is called? Bug
100. The instructions for starting the computer are house on? Read only memory chip

1. 1 nibble equals to? 4 bits
2. Perforated paper used as input of output media is known as? paper tapes
3. Which American computer company is called Big Blue? IBM
4. It was in 2028 BS the was brought in to calculate census data? IBM 1401
5. Which unit holds data temporarily? Primary Memory Unit
6. The computer size was very large in? First Generation
7. A name or number used to identify storage location devices? An address
8. Which of the following is not computer language? Medium level language
9. Reading data is performed in magnetic disk by? Read/write lead
10. The term ‘computer’ is derived from? Latin language
11. To locate a data item for storage is? Fetch
12. Who used punched cards practically for the first time in the history of computers? Herman Hollerith
13. Hard disk is coated in both sides with? Magnetic metallic oxide
14. Which of the following term means to reckon? Put are
15. Computer professionals working in a computer Centre are? Human ware
16. The contents of information are stored in? Memory data register
17. Main storage is also called? Memory
18. Memory unit is one part of? Central Processing Unit
19. By programmable machine we mean? computers
20. Which of the following is a secondary memory device? Disk
21. The memory which is programmed at the time it is manufactured? PROM
22. Which of the following memories must be refreshed many times per second? Dynamic RAM
23. In mode, the communication channel is used in both directions at the same time? Full-duplex
24. Memory is made up of? Large number of cells
25. What is the path from which data flow in a computer system is known as? Bus
26. Which technology is more reliable? Electronic
27. Raw facts and figures about any particular topic are? data
28. A computer can solve more than one kind of problem. This is related to which of the following characteristics? Versatility
29. From which generation computers the printers were used? second
30. How many symbols exist in Bardot code?32

1. An application program that helps the user to change any number and immediately see the result of that change is? Spreadsheet
2. 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
3. In analog computer? Input is never converted to digital form
4. When as the Company named IBM? 1924
5. Which of the following storage device can store the largest amount of data? Hard Disks
6. The octal equivalence of 111010 is? 72
7. What do you call a single point on a computer screen? Pixel
8. Mostly which of the following device is used to carry user files? Floppy Disk
9. An output device that uses words or messages recorded on a magnetic medium to produce audio response is? Voice response unit
10. Who developed a mechanical device in the 17th century that could add, Subtract, Multiple divide and find square roots? Leibniz
11. The first Macintosh computer was from? Fourth generation
12. Which of the following is internal memory? RAM
13. Floppy disks which are made from flexible plastic material are also called? Diskettes
14. 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
15. A collection of related instructions organized for a common purpose is referred to as? Program
16. Computer instructions written with the use of English words instead of binary machine code is called? Symbolic code
17. Which language is directly understood by the computer without translation program? Machine language
18. Which of the following processors use RISC technology? Power PC
19. Which of the following machine was not invented by Charles Babbage? Tabulating Machine

1. How many numbers could ENIAC store in its internal memory? 20
2. The subject of cybernetics deals with the science of? Control and communication
3. Binary circuit elements have? Two stable state
4. The value of each bead in earth is? 1
5. Which of the following terms is the most closely related to main memory? Permanent
6. Which was the world’s first minicomputer and when was it introduced? PDP-I, 1958
7. A group of magnetic tapes, videos or terminals usually under the control of one master is? Surface
8. The word length of a computer is measured in? Bits
9. Which unit holds data permanently? Secondary storage unit
10. Computer system comprises of major units? input unit, output unit, central processing unit and storage unit
11. Magnetic tape can serve as? Secondary storage media
12. Which company is the biggest player in the microprocessor industry? Intel
13. EBCDIC can code up to how many different characters? 256
14. Number crunchier is the informal name for? Super computer
15. RATS stand for? Regression Analysis Time Series
16. Which technology is used in Compact disks? Laser
17. The metal disks, which are permanently housed in, sealed and contamination free containers are called? Winchester disk
18. Intel Corporation produces chips for which computers? IBM PCs
19. The first microprocessor built by the Intel Corporation was called? 8080
20. The data recording format in most of the modern magnetic tape is? 8-bit EBCDIC
21. Who designed the first electronics Computer ? ENIAC/ C) J. P. Eckert and J. W. Muchly
22. Time during which a job is processed by the computer is? Execution time
23. Which unit converts user data into machine readable form? Input unit
24. Which unit is known as nerve center of computer? ALU
25. Access time is? seek time + latency time
26. Easily relocatable language is? Assembly language
27. Through which device the main components of the computer communicate with each other? System Bus
28. What type of device is computer keyboard? Input
29. Which is the limitation of high level language? Lower efficiency
30. The original ASCII code used bits of each byte, reserving that last bit for error checking? 7
31. A computer programmer? Does all the thinking for a computer
32. Fifth generation computer is also known as? Knowledge information processing system
33. A typical personal computer used for business purposes would have of RAM? 256
34. Model 5100 was in 1957? The first PC built by IBM
35. Which 8-bit chip was used in many of today’s TRS-80 computers? Z-80
36. Which of the following disk is fixed disk? Hard Disks
37. The word Abacus is derived from Abaxis a word from? Latin language
38. An online backing storage system capable of storing larger quantities of data is? Mass storage
39. A kind of serial dot-matrix printer that forms characters with magnetically-charged ink sprayed dots is called? Ink-jet printer
40. Which of the following is an example of fifth generation computer? PIM/m
41. The number of records contained within a block of data on magnetic tape is defined by the? Blocking factor
42. Which of the following registers is loaded with the contents of the memory location pointed by the PC? Instruction register
43. MIS is designed to provide information needed for effective decision making by? Managers
44. Latency time is? Time to spin the needed data under head
45. Who built the first Mechanical Calculator? Blaise Pascal
46. Which of the following generation computers had expensive operation cost? First
47. An IBM system/38 represents the computer class of? Small-scale computer
48. Another word for a daisy wheel printer? Golf ball printer
49. Which computers are used as servers for any medium sized organizations? Mini Computers
50. Slide Rules was invented in? 1620
51. A normal CD-ROM usually can store up to data? 680 MB
52. The lower deck of an abacus is known as? earth
53. All modern Computers operate on? Data
54. Offline device is? A device which is not connected to CPU
55. What is the latest write-once optical storage media? CD-ROM disk
56. Which one of the following input device is user- programmable? VDT
57. Floppy disks typically in diameter? 3
58. Current SIMMs have either or connectors (pins)? 30 or 72
59. Dot-matrix is a type of? Printer
60. Programs are executed on the basis of a priority number in? Multiprogramming
61. When was Apple Macintosh II microcomputer introduced in the market? 1983
62. When was the world’s first laptop computer introduced in the market and by whom? Epson, 1981
63. Today’s computer giant IBM was earlier known by different name which was changed in 1924. What was that name? The Tabulator Ltd.
64. Who built the world’s first electronic calculator using telephone relays, light bulbs and batteries? George Stibitz
65. In which language is source program written? High level
66. A song being played on computer speaker is? soft output
67. What is the number of read-write heads in the drive for a 9-trac magnetic tape? 9
68. Charles Babbage was awarded by Royal Society for his? Difference Engine
69. 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
70. Which of the following will happen when data is entered into a memory location? It will erase the previous content
71. Which device is used as the standard pointing device in a Graphical User Environment? Mouse

1. Pick the one that is used for logical operations or comparisons such as less than equal to or greater than? Arithmetic and Logic Unit
2. Which of the following is used only for data entry and storage, and never for processing? Dumb terminal
3. Basic is language? a procedural
4. Which of the following have the fastest access time? Semiconductor Memories
5. How many types of storage loops exists in magnetic bubble memory? 2
6. Daisy wheel printer is a type of? Impact printer
7. A number system that has eight different symbols to represent any quantity is known as? Octal
8. The two basic types of record access methods are? Sequential and random
9. One of a class of storage device devices that can access storage locations in any order is? DASD
10. In what respect human beings are superior to computers?  Intelligence
11. As compared to the secondary memory, the primary memory of a computer is? Fast
12. The language that the computer can understand and execute is called? Machine language
13. How was the generation of computer classified? by the device used in memory & processor
14. CAD stands for? Computer aided design
15. Which of the following memories has the shortest access times? Cache memory
16. .A small or intelligent device is so called because it contains within it a? Sensor
17. Who invented Analytical engine? Charles Babbage
18. CPU speed of a personal computer is? 100 KIPS
19. Circular division of disks to store and retrieve data is known as? tracks
20. The least significant bit of the binary number, which is equivalent to any odd decimal number, is? 0

1. The latest PC keyboards use a circuit that senses the movement by the change in its capacitance? Capacitance keyboard
2. The Stepped Reckoner was invented by? Gottfried Leibnitz
3. While inserting a diskette into the diskette drive of a PC, the diskette’s label side should face? Up
4. Most of the inexpensive personal computers do not have any disk or diskette drive. What is the name of such computes? Diskless computers
5. What is a light pen? Optical input device
6. When a key is pressed on the keyboard, which standard is used for converting the keystroke into the corresponding bits? ANSI
7. In order to play and hear sound on a computer, one needs? a sound card and speakers
8. For which of the following computers can’t be used? gathering data
9. Who invented punched cards? Joseph Jacquard
10. Which device is required for the Internet connection? Modem

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