Most Important Computer One-Liner Questions for FPSC PPSC

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Most Important Computer One-Liner Questions for FPSC PPSC

We collected all the data and 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 MCQswill help you to secure maximum marks in upcoming NTS, CSS, PMS, KPPSC, PPSC and other competitive exams of Pakistan. 

  • What is Computer? an electronic device for storing and processing data, typically in binary form, according to instructions given to it in a variable program.
  • 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 called as? 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

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