Important Computer MCQs For Competitive Exams part-1 | Set 5

1. A system which allows interaction between man and machine via some terminal device is

2. A computer midway between a micro and a main frame in size is

3. The capacity of a machine to perform tasks, normally requiring human intelligence, is

5. A third and last component of CPU is

7. Who is credited with the idea of using punch cards to control patterns in a weaving machine?

8. Most of the inexpensive personal computers do not have any disk or diskette drive. What is the name of such computers?

10. The process of starting or restarting a computer system by loading instructions from a secondary storage device into the computer memory is called

11. Who invented the microprocessor?

12. The accuracy of the floating point numbers representable in two 16 bit words of a computer is approximately

13. A characteristic of card system is

A. slowness in processing data

B. using cards as records of transactions

C. needing a larger DP staff

D. All of these

E. None of these

Correct : D. All of these

15. In analog computer

A. Input is first converted to digital form

B. Input is never converted to digital form

C. output is displayed in digital form

D. All of these

E. None of these

Correct : B. Input is never converted to digital form

16. In latest generation computers, the instructions are executed

17. Personnel who design, program, operate and maintain computer equipment refers to

18. An error in software or hardware is called a bug. What is the alternative computer jargon for it?

20. What is the name of the display feature that highlights areas of the screen which require operator attention?

21. Which printer is very commonly used for desk-top publishing?

22. Which of the following is classified as an impact printer?

23. What is the general name of the device which produces hardcopy graphics?

24. In a computer system, which device is functionally opposite of a Key-board?

25. The equipment with which the computer talks to its users is called a

28. The function of CPU is

A. to provide a hard copy

B. to read, interpret and process the information and instruction

C. to communicate with the operator

D. to provide external storage of text

E. None of these

Correct : B. to read, interpret and process the information and instruction

29. Which one of the following is termed a combination input-output device?

30. The barcode which is used on all types of items, is read by a scanning device directly into the computer. What is the name of this scanning device?

31. The optical technique that uses lasers is

32. The disadvantages of a direct access file is

A. the delay in computing the storage address

B. duplication of address locations

C. unused, hut available, storage locations

D. All of these

E. None of these

Correct : D. All of these

33. A complete set of programs for one specific data processing application is called

34. A computer-controlled device for training exercises that duplicates the work environment is a

35. An advantage of overlapped processing activities is

A. more effective use of the CPU

B. increased processing activities for the entire system

C. better coordination of I/O activities

D. All of these

E. None of these

Correct : D. All of these

36. The terminal device often used in checking charge cards that offers both a limited keyboard input and visual output is the

37. The mechanical diskette drive in which you insert your diskette is connected to the computer’s bus

40. Disk units that use unremovable platters are called

42. What is the name of the screen pointing device that rolls on bearings and has one or more buttons on its top?

43. Character readers are those devices which read the characters printed on the source documents and then convert them directly into computer-usable input.

44. All calculations are performed and all comparisons are made in unit

45. A certain computer hardware component does not process the data itself but acts as a central nervous system for other data manipulating components. What is it called?

46. A logic is an electronic circuit which

A. makes logic decisions

B. allows electron flow only in one direction

C. works on binary algebra

D. works on float numbers

E. None of these

Correct : A. makes logic decisions

47. A code used for standardizing the storage and transfer of information amongst various computing devices is called

48. As compared to a magnetic tape, the main advantage of magnetic disk is its

49. What is the size of the optical compact disk which is used for recording high quality music?

50. Why do magnetic tape drives for minicomputers use vacuum columns?

A. For quick acceleration and deacceleration of the tape

B. For immediate starting and stopping of the tape

C. To avoid stress in the tape

D. To provide extra tape length

E. None of these

Correct : C. To avoid stress in the tape

51. What is the name of the visible silver rectangle which separates the take-up portion of the magnetic tape from the data recording portion?

52. The data on the tracks on a magnetic disk are written as

54. Which of the following statements is wrong?

A. An EPROM can be programmed, erased and reprogrammed by the user with an EPROM programming instrument

B. Magnetic tape is non volatile

C. Magnetic core and semiconductor memories

D. RAM is a type of volatile memory

E. None of these

Correct : C. Magnetic core and semiconductor memories

55. For a memory system, the cycle time is

A. same as the access time

B. longer than the access time

C. shorter than the access time

D. submultiple of the access time

E. None of these

Correct : B. longer than the access time

56. The process of fetching and executing instructions, one at a time, in the order of increasing addresses is known as

57. Non-volatility is an important advantage of

58. The general range of speed in revolutions per minute (rpm) at which floppy disks rotate is

60. Two new types of semiconductor memories are

61. The word ‘serial’ describes

A. an inexpensive card reader that reads one column at a time

B. a character-by-character transfer of data between an input/output or auxiliary storage unit and a channel

C. is a serial communication physical interface through which information transfers in or out one bit at a time

D. both (a) and (b)

E. None of these

Correct : D. both (a) and (b)

62. The largest of the four conceptual areas of storage is likely to be the

63. In half-duplex data transmission

A. data can be transmitted in one direction only

B. data can be transmitted in both directions

C. data can be transmitted in both directions simultaneously

D. data cannot be transmitted

E. None of these

Correct : B. data can be transmitted in both directions

64. A lever used to control the movement of a cursor on a video screen is

65. In synchronous transmission data from various users

71. Most important advantage of an IC is its

A. easy replacement in case of circuit failure

B. extremely high reliability

C. reduced cost

D. low power consumption

E. None of these

Correct : B. extremely high reliability

73. In which mode, each user has a local input/output device?

74. A standard tape recorder used to save or load computer information is known as

75. Programs designed to perform specific tasks is known as

76. Perforated paper used as input or output media is known as

77. A computer with CPU speed around 100 million instructions per second and with the word length of around 64 bits is known as

78. An approach that permits the computer to work on several programs instead of one is

81. CAD stands for

A. Computer Aided Design

B. Computer Algorithm for Design

C. Computer Application in Design

D. All of these

E. None of these

Correct : A. Computer Aided Design

83. Which of the following terms is the most closely related to main memory?

84. Which of the following is used for manufacturing chips?

85. Which of the following is required when more than one person uses a central computer at the same time?

86. Who is considered the ‘father’ of the minicomputer and one of the founder fathers of the modem computer industry world-wide?

87. Multiprogramming was made possible by

A. input/output units that operate independently of the CPU

B. operating system

C. both (a) and (b)

D. neither (a) nor (b)

E. None of these

Correct : C. both (a) and (b)

88. Network topology, consisting of nodes attached in a ring, without a host computer, is known as

89. Which of the following terms does not describe a database structure used by a DBMS to link data from several files?

90. A communication protocol that converts noisy data links into communication channels free of transmission errors is known as

91. Control of computer system or subsystem operation by an operator who may intervene at arbitrary times is

92. A plastic card similar to a credit card but having some memory and a microprocessor embedded within it is

93. A repository for data, usually covering specific topic is

94. An on-line backing storage system capable of storing larger quantities of data is

96. The progressing of two or more programs in parallel is

99. The use of a computer to get information from a data bank is known as

100. Which of the following is a storage medium to copy stored data onto another?

Quiznetik

Important Computer MCQs For Competitive Exams part-1 | Set 5

1. A system which allows interaction between man and machine via some terminal device is

2. A computer midway between a micro and a main frame in size is

3. The capacity of a machine to perform tasks, normally requiring human intelligence, is

4. A Group of integrated parts is called

5. A third and last component of CPU is

6. The digital computer was developed primarily in

7. Who is credited with the idea of using punch cards to control patterns in a weaving machine?

8. Most of the inexpensive personal computers do not have any disk or diskette drive. What is the name of such computers?

9. Which of the following require large computer memory?

10. The process of starting or restarting a computer system by loading instructions from a secondary storage device into the computer memory is called

11. Who invented the microprocessor?

12. The accuracy of the floating point numbers representable in two 16 bit words of a computer is approximately

13. A characteristic of card system is

14. A digital computer did not score over an analog computer in terms of

15. In analog computer

16. In latest generation computers, the instructions are executed

17. Personnel who design, program, operate and maintain computer equipment refers to

18. An error in software or hardware is called a bug. What is the alternative computer jargon for it?

19. Modern computers are very reliable but they are not

20. What is the name of the display feature that highlights areas of the screen which require operator attention?

21. Which printer is very commonly used for desk-top publishing?

22. Which of the following is classified as an impact printer?

23. What is the general name of the device which produces hardcopy graphics?

24. In a computer system, which device is functionally opposite of a Key-board?

25. The equipment with which the computer talks to its users is called a

26. Touchpads are particularly popular with microcomputer users who cannot

27. A trackball is manipulated by

28. The function of CPU is

29. Which one of the following is termed a combination input-output device?

30. The barcode which is used on all types of items, is read by a scanning device directly into the computer. What is the name of this scanning device?

31. The optical technique that uses lasers is

32. The disadvantages of a direct access file is

33. A complete set of programs for one specific data processing application is called

34. A computer-controlled device for training exercises that duplicates the work environment is a

35. An advantage of overlapped processing activities is

36. The terminal device often used in checking charge cards that offers both a limited keyboard input and visual output is the

37. The mechanical diskette drive in which you insert your diskette is connected to the computer’s bus

38. The number of tracks on a 1/2 inch wide magnetic tape is

39. What is the most common speed in rpm at which the hard disks usually rotate?

40. Disk units that use unremovable platters are called

41. Before you stored anything on a disk, it has to be

42. What is the name of the screen pointing device that rolls on bearings and has one or more buttons on its top?

43. Character readers are those devices which read the characters printed on the source documents and then convert them directly into computer-usable input.

44. All calculations are performed and all comparisons are made in unit

45. A certain computer hardware component does not process the data itself but acts as a central nervous system for other data manipulating components. What is it called?

46. A logic is an electronic circuit which

47. A code used for standardizing the storage and transfer of information amongst various computing devices is called

48. As compared to a magnetic tape, the main advantage of magnetic disk is its

49. What is the size of the optical compact disk which is used for recording high quality music?

50. Why do magnetic tape drives for minicomputers use vacuum columns?

51. What is the name of the visible silver rectangle which separates the take-up portion of the magnetic tape from the data recording portion?

52. The data on the tracks on a magnetic disk are written as

53. Which memory is nonvolatile and may be written only once?

54. Which of the following statements is wrong?

55. For a memory system, the cycle time is

56. The process of fetching and executing instructions, one at a time, in the order of increasing addresses is known as

57. Non-volatility is an important advantage of

58. The general range of speed in revolutions per minute (rpm) at which floppy disks rotate is

59. Main memory contains

60. Two new types of semiconductor memories are

61. The word ‘serial’ describes

62. The largest of the four conceptual areas of storage is likely to be the

63. In half-duplex data transmission

64. A lever used to control the movement of a cursor on a video screen is

65. In synchronous transmission data from various users

66. To set a register or counter to the all-zero- state is

67. A device for entering X-Y co-ordinates is known as

68. Which of the following is still useful for adding numbers?

69. Which unit decodes information and present to the user?

70. Main storage is also called

71. Most important advantage of an IC is its

72. The most popular language for interactive use is

73. In which mode, each user has a local input/output device?

74. A standard tape recorder used to save or load computer information is known as

75. Programs designed to perform specific tasks is known as

76. Perforated paper used as input or output media is known as

77. A computer with CPU speed around 100 million instructions per second and with the word length of around 64 bits is known as

78. An approach that permits the computer to work on several programs instead of one is