Top 100 Osssc peo computer question and answer |100 computer questions for all competitive exams
1. Who is the father of Computer science?
Answer:- Charles Babbage
2. In a computer, most processing takes place in _______?
Answer:- CPU
3. In which type of computer, data are represented as discrete signals?
Answer:- Digital Computer
4. Scientific Name of Computer?
Answer:- Sillico sapiens
5. What is the name of the display feature that highlights are of the screen which requires operator attention?
Answer:- Reverse Video
6. Computers, combine both measuring and counting, are called _______?
Answer:- Hybrid Computer
7. What is FORTRAN?
Answer:- Formula Translation
8. What translates and executes program at run time line by line?
Answer:- Interpreter
9. What converts an entire program into machine language?
Answer:- Compiler
10. Who is the father of personal computer?
Answer:- Edward Robert
11. EEPROM stands for _______?
Answer:- Electronic Erasable Programmable Read Only Memory
12. Who developed the first electronic computer?
Answer:- J.V. Atansoff
13. Which programming languages are classified as low level languages?
Answer:- Assembly Language
14. The first web browser is _______?
Answer:- Mosaic
15. First page of Website is termed as _______?
Answer:- Homepage
16. IBM stands for _______?
Answer:- International Business Machines
17. Office LANs, which are scattered geographically on large scale, can be connected by the use of corporate _______?
Answer:- WAN ( wide area network )
18. To move a copy of file from one computer to another over a communication channel is called?
Answer:- File Transfer
19. Large transaction processing systems in automated organisations use _______?
Answer:- Batch Processing
20. MICR stands for _______?
Answer:- Magnetic Ink Character Recognition
21. Name of 1st electronic computer?
Answer:- ENIAC
22. No. of different characters in ASCII coding system?
Answer:- 1024
23. MSIC stands for _______?
Answer:- Medium Scale Integrated Circuits
24. The scrambling of code is known as _______?
Answer:- Encryption
25. The first computers were programmed using _______?
Answer:- Machine Language
26. A fault in a computer program which prevents it from working correctly is known as _______?
Answer:- Bug
27. Which button makes alphabets/letters in uppercase and lowercase and numbers to symbols?
Answer:- Shift
28. When a computer is switched on, the booting process performs _______?
Answer:- Power on self test
29. What is the software frequently utilized by end users called (like Word, PowerPoint)?
Answer:- Application Software
30. Unit of measurement of the output quality of a printer?
Answer:- Dot per sq. inch
31. Switching device of fifth generation computer is _______?
Answer:- VLSI
32. The unit KIPS is used to measure the speed of _______?
Answer:- Processor
33. DOS stands for _______?
Answer:- Disk Operating System
34. What is a joy stick primarily in computers used for?
Answer:- Computer Gaming
35. In 1999, the Melissa virus was a widely publicized _______?
Answer:- E-mail virus
36. Which of the following commands is given to reboot the computer?
Answer:- Ctrl+Alt+Del
37. What is correcting errors in a program called?
Answer:- Debugging
38. BCD is _______?
Answer:- Binary Coded Decimal
39. What type of virus uses computer hosts to reproduce itself?
Answer:- Worm
40. SMTP, FTP and DNS are applications of the _______ layer?
Answer:- Application
41. Which command is used to select the whole document?
Answer:- Ctrl+A
42. COBOL is an acronym for _______?
Answer:- Common Business Oriented Language
43. The ability of an OS to run more than one application at a time is called?
Answer:- Multitasking
44. What is the functional key to display save-as box?
Answer:- F12
45. Full form of NOS?
Answer:- Network Operating system
46. Something which has easily understood instructions is said to be _______?
Answer:- Analog Data
47. A modem is connected to a _______?
Answer:- Telephone Line
48. Refresh Rate of monitor is measured in?
Answer:- Hertz
49. What was the chief component of first generation computer?
Answer:- Vacuum tube & Valves
50. Name the Father of Computer Mouse?
Answer:- Douglas Engelbart
51. A program that performs a useful task while simultaneously allowing destructive acts is _______?
Answer:- Trojan Horse
52. The geometric arrangement of devices on the network is called _______?
Answer:- Topology
53. The basic goal of computer process is to convert data into _______?
Answer:- Information
54. Where are the CPU and memory located?
Answer:- Motherboard
55. Who is known as the founder of IBM Company?
Answer:- Thomas J. Watson
56. An image on a computer screen is made up of _______?
Answer:- Pixels
57. Full form of MAN?
Answer:- Metropolitan Area Network
58. Which command in DOS can be used to recover accidentally deleted files?
Answer:- UNDELETE
59. A computer program that converts an entire program into machine language atone time is called _______?
Answer:- Characters
60. In which year, the Microsoft company was founded?
Answer:- 1975
61. What is the personal computer operating system that organizes and uses a graphic desktop environment?
Answer:- Windows
62. What are Light pen and joystick?
Answer:- Input Devices
63. What is a half byte also called as?
Answer:- Nibble
64. SMPS stands for _______?
Answer:- Switched mode Power Supply
65. What do we use to change the appearance and positioning of text document in MS-Word?
Answer:- Formatting
66. A _______ is approximately a million bytes?
Answer:- Megabyte
67. Daisy wheel, Drum, chain etc are the _______?
Answer:- Printers
68. XML stands for _______?
Answer:- Extensible Markup Language
69. What kind of scheme is the HTTP protocol?
Answer:- Request/Response
70. Magnetic disk is an example of _______?
Answer:- Secondary Memory
71. What is the meaning of OSI, in terms of computers ?
Answer:- Open system Interconnection
72. Which type of storage device is a BIOS ?
Answer:- Primary
73. What is the extension type of the excel 2007 files?
Answer:- .xlsx
74. Collecting personal information and effectively posing as another individual is known as the crime of _______?
Answer:- Identity theft
75. The amount of vertical space between lines of text in a document is called _______?
Answer:- Line Spacing
76. A computer cannot ‘boot’ if it does not have the _______?
Answer:- Operating system
77. What is the other name for programmed chip ?
Answer:- LSIC
78. A normal CD- ROM usually can store up to _______ data?
Answer:- 680 MB
79. What does DMA stand for ?
Answer:- Direct Memory Access
80. Full form of LAN ?
Answer:- Local Area Network
81. ASCII stands for _______?
Answer:- American Standard Code for Information Interchange
82. Second Generation computers were developed during _______?
Answer:- 1956-1965
83. When did arch rivals IBM and Apple Computers Inc. decide to join hands?
Answer:- 1991
84. What kind of memory is both static and non-volatile?
Answer:- ROM
85. An error in software or hardware is called a bug. What is the alternative computer jargon for it ?
Answer:- Glitch
86. Unwanted repetitious messages, such as unsolicited bulk e-mail is known as _______?
Answer:- Spam
87. The common name for the crime of stealing passwords is _______?
Answer:- Spoofing
88. BIOS stands for _______?
Answer:- Basic Input Output System
89. Who is regarded as Father of “C” programming language?
Answer:- Dennis Ritchie
90. RAM can be treated as the _______ for the computer’s processor.
Answer:- Waiting Room
91. Computers manipulate data in many ways, and this manipulation is called _______?
Answer:- Processing
92. Joshy, Perfumes are examples of _______?
Answer:- Viruses
93. The ability to recover and read deleted or damaged files from a criminal’s computer is an example of a law enforcement speciality called _______?
Answer:- Computer Forensics
94. Where does most data go first with in a computer memory hierarchy?
Answer:- RAM
95. Help Menu is available at which button?
Answer:- Start
96. Which file contains permanent data and gets updated during the processing of transactions?
Answer:- Master File
97. A DVD is an example of an _______?
Answer:- Optical Disc
98. Which is most common tool used to restrict access to computer system?
Answer:- Passwords
99. The technology that stores only essential instructions on a microprocessor chip and thus enhances its speed is referred as _______?
Answer:- RISC
100. What is the name of an application program that gathers user information and sends it to someone through the Internet?
Answer:- Spybot
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