Introduction of Computer MCQ

Introduction of Computer MCQ

1.A collection of wires that connects several device is called
A) Link ✔️
B) Bus
C) Cable
D) Port

2.A offline device is
A) A device which is not connected to CPU ✔️
B) A device which is connected to CPU
C) A device which is in breakdown stage
D) None of these

3.Which of the following is the fastest
A) CPU ✔️
B) Magnetic tapes and disks
C) Video terminal
D) Sensors, mechanical controllers

4.Memories in which any location can be reached in a fixed and short amount of time after specifying its address is called
A) Sequential access memory
B) Random Access Memory ✔️
C) Secondary memory
D) Mass storage

5.The register which contains the data to be written into or read out of the addressed location is known as
A) Index register
B) Memory address register
C) Memory data Register ✔️
D) Program counter

6.The register which keeps track of the execution of a program and which contains the memory address of the next instruction to be executed is known as
A) Index register
B) Instruction register
C) Memory address register
D) Program Counter ✔️

7.Which of the following is used as storage locations both in the ALU and in the control section of a computer
A) Accumulator
B) Register ✔️
C) Adder
D) Decoder

8.Accumulator is a
A) Hardwired unit
B) Sequential circuit
C) Finite state machine
D) Register ✔️

9.Non volatility is an important advantage of
B) Magnetic tapes and disks
C) Magnetic bubbles
D) Both B and C ✔️

10.Which of the following memory is volatile
A) RAM ✔️

11.The memory which is programmed at the time it is manufactured is
A) ROM ✔️

12.Which memory is non volatile and may be written only once.
D) PROM ✔️

13.Which of the following statements is wrong
A) Magnetic core memory, RAMs and ROMs have constant access time
B) Magnetic tape is non volatile
C) Semiconductor Memories are used as Mass Memory Medium ✔️
D) An EPROM can be programmed, erased and reprogrammed by the user with an EPROM programming instrument

14.The fastest type of memory is
A) Tape
B) Semiconductor Memory ✔️
C) Disk
D) Bubble memory
15. In magnetic disks data is organized on the platter in a concentric sets or rings called
A) Sector
B) Track ✔️
C) Head
D) Block

16.When we move from the outer most track to the innermost track in a magnetic disk, the density
A) Increases ✔️
B) Decreases
C) Remains the same
D) Either remains constant or decreases

17.Which of the following device can be used to directly input printed text
B) Mouse ✔️
D) Joystick

18.Which device can draw continuous lines
A) Daisy wheel
B) Plotter ✔️
C) Chain printer
D) Impact printer

19.In which storage device, recording is done by burning tiny pits on a circular disk
A) Punched cards
B) Floppy disk
C) Magnetic tape
D) Optical Disk ✔️

20.Which of the following printers uses light beam and electro statically sensitive black powder
A) Dot matrix printer
B) Daisy wheel printer
C) Chain printer
D) Laser printer

21.The primary purpose of an operating system is
A) To Make the most efficient use of the computer hardware
B) To allow people to use the computer
C) To keep system programmers employed
D) To make computers fast.

22.The operating system manages
A) Memory
B) Processor
C) Disk and I/O devices
D) All of the Above ✔️

23.Scheduling is
A) Allowing job to use the processor ✔️
B) Unrelated performance considerations
C) Quiet simple to implement, even on large main frames
D) The same regardless of the purpose of the system

24.Which of the following translator program converts assembly language program to object program
A) Assembler
B) Compiler ✔️
C) Microprocessor
D) Linker

25.Multiprogramming systems
A) Are easier to develop than single programming systems
B) Execute each job faster
C) Execute more jobs in the same time Period ✔️
D) Use only one large mainframe computer

26.What device is used for entering x – y coordinates
A) Card reader
B) Joystick ✔️
C) Keyboard
D) All of the above

27.Impact printers
A) Strike a ribbon against the paper to produce character images. ✔️
B) Include ink-jet and thermal devices
C) Are more expensive than laser printers
D) Use optical technology

28.Bar codes stores information using
A) Punched holes
B) Dots
C) Thick and thin tines ✔️
D) All of the above

29.How many types of storage loops exist in magnetic bubble memory
A) 8
B) 4
C) 3
D) 2

30.In comparison to the internal (main) memory, tape or disk memory is
A) Slower and more expensive
B) Slower and less expensive ✔️
C) Faster and more expensive
D) Faster and less expensive

31.One of the main features that distinguish microprocessor from microcomputers is
A) Words are usually larger in microprocessors
B) Words are shorter in microprocessors
C) Microprocessor does not contain I/O devices ✔️
D) Computers are not fully integrated

32.Microprocessor with ‘n’ address lines is capable of addressing
A) 2n locations
B) 2(n + 1)locations
C) 2n locations
D) n2 locations

33.Which technique is preferable for transferring a large amount of data to and from a memory in a short time
A) DMA ✔️
B) Interrupt driven I/O
C) Programmed I/O
D) None of these

34.The binary representation 100110 is numerically equivalent to
A) The decimal representation 46
B) The octal representation 46 ✔️
C) The hexadecimal representation 46
D) The binary representation 26

35. The greatest negative number which can be stored in a computer that has 8-bit word length and uses 2’s complement arithmetic is
A) -256
B) -255
C) -128 ✔️
D) -127

36.By taking 2’s complement again of the 2’s complement of a binary, one gets
A) The 1’s complement
B) The 2’s complement
C) The original number ✔️
D) The sign magnitude form of the numbers

37.In the sign magnitude representation, the leading bit
A) Is a part of the number itself
B) Is unit for positive numbers
C) Is always unit
D) Stands for the sign ✔️

38.The OSI reference model defines the function for seven layers of protocols
A) Including the user and communication medium.
B) Not including the user or communication medium ✔️
C) Including the communication medium but not the user
D) Including the user but not the communication medium