Computer MCQs

Computer MCQs with answers For jobs in 2021

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
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
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
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 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
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
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 chipWhich 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 levelA 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
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
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
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? IntelligenceAs 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?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
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 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? DiligenceWhich 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? PlotterOne 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? ENIACA 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
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
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
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

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