Computer Knowledge E Book for Competitive Exams

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Computer Questions Capsules: In our series of free download of study material in PDF, we are now providing you some very important questions on Computer Knowledge. Question Number 1: Which of the following registers hold the information before it goes to the decoder? A) control register B) data register C) accumulator D) address register Answer & Explanation: data register hold the information before it goes to the decoder. Question Number 2: A modern electronic computer is a machine that is meant for __? A) doing quick mathematical calculations B) input, storage, manipulation and outputting of data C) electronic data processing D) performing repetitive tasks accurately Answer & Explanation: input, storage, manipulation and outputting of data Question Number 3: Which of the following bus types are used by the Apple Macintosh computer? A) ISA B) NuBus C) EISA

D) MCA Answer & Explanation: NuBus bus type used by the Apple Macintosh computer. Question Number 4: When the time to establish link is large and the size of data is small, the preferred mode of data transfer is _____? A) Circuit switching B) Packet switching C) Time division multiplexing D) All of the above Answer & Explanation: When the time to establish link is large and the size of data is small, the preferred mode of data transfer is Packet switching. Question Number 5: Group of instruction that directs a computer is called ____? A) Storage B) Memory C) Logic D) Program Answer & Explanation: Group of instruction that directs a computer is called Program. Question Number 6: A computer-controlled device for training exercise that duplicates the work environment is a: A) simulator B) duplicator C) trainer D) COM device Answer & Explanation: A computer-controlled device for training exercise that duplicates the work environment is a simulator. Question Number 7: Which of the following is not an output device of a computer? A) Printer B) Keyword C) VDU D) CRT screen Answer & Explanation: Keyword is not an output device of a computer. Question Number 8: An advantage of blocking a tape is that ____? A) additional processing time is consumed B) the direct file method can be emulated C) tapes contain less date and longer tapes D) less tape is used to store the same amount of data Answer & Explanation: less tape is used to store the same amount of data Question Number 9: Perforated paper used as input or output media is known as ___? A) Paper tape B) Magnetic tape C) Punched paper tape D) Card punch Answer & Explanation: Perforated paper used as input or output media is known as Paper tape. Question Number 10: What is the byte capacity of a drum which is 5 inch high, 10 inch diameter, and which has 60 tracks per inch and bit density of 800 bits per inch? A) 942000 bytes B) 9712478 bytes C) 192300 bytes D) 14384 bytes Answer & Explanation: 942000 bytes is the byte capacity of a drum which is 5 inch high, 10 inch diameter. Question Number 11: Ethernet uses ____? A) Bus topology B) Ring topology C) Star topology D) Tree topology Answer & Explanation: Ethernet uses Bus topology. Question Number 12: What is the latest write-once optical storage media? A) Digital paper B) Magneto-optical disk C) WORM disk D) CD-ROM disk Answer & Explanation: Digital paper is the latest write-once optical storage media. Question Number 13: CD-Rom stands for _____? A) Compactable Read Only Memory B) Compact Date Read Only Memory C) Compactable Disk Read Only D) Compact Disk Read Only Memory Answer & Explanation: Compact Disk Read Only Memory Question Number 14: IBM 1401 is ___? A) First Generation Computer B) Second Generation Computer C) Third Generation Computer D) Fourth Generation Computer Answer & Explanation: IBM 1401 is Second Generation Computer. Question Number 15: ASCII stands for _____? A) American Stable Code for International Interchange B) American Stable Code for Institutional Interchange C) American Standard Code for Information Interchange D) American Stable Code for Interchange Information Answer & Explanation: American Standard Code for Information Interchange Question Number 16: Computer Component of First Generation Computer was ____?

A) Transistors B) Vacuum Tubes and Valves C) Integrated Circuits D) None of the above Answer & Explanation: Computer Component of First Generation Computer Vacuum Tubes and Valves. Question Number 17: The personal computer industry was started by ____? A) IBM B) Apple C) Compaq D) HCL Answer & Explanation: The personal computer industry was started by IBM. Question Number 18: Magnetic tape can serve as ____? A) Secondary storage media B) Output media C) Input media D) All of the above Answer & Explanation: All of the above Question Number 19: The two major types of computer chips are: A) External memory chip B) Primary memory chip C) Microprocessor chip

D) Both A and B Answer & Explanation: Both A and B Question Number 20: Which was the most popular first generation computer? A) IBM 1650 B) IBM 360 C) IBM 1130 D) IBM 270 Answer & Explanation: IBM 1650 was the most popular first generation computer. Question Number 21: What is the responsibility of the logical unit in the CPU of a computer? A) To produce result B) To compare numbers C) To control flow of information D) To do maths work Answer & Explanation: To compare numbers Question Number 22: A disk storage medium in the form of an assembly containing a single rigid magnetic disk permanently is ____? A) Fixed disk B) Disk cartridge C) Card punch D) Card reader Answer & Explanation: A disk storage medium in the form of an assembly containing a single rigid magnetic disk permanently is Disk cartridge. Question Number 23: A device that operates under the control of another device is called ___? A) Stem B) Slave C) Simulator D) Emulator Answer & Explanation: A device that operates under the control of another device is called Slave. Question Number 24: Actual data processing operations are performed in the arithmetic logic section, but not in the ____ Storage section of a processor unit. A) Primary B) Accumulator C) Buffer D) Secondary Answer & Explanation: Primary Storage section of a processor unit. Question Number 25: As compared to diskettes, the hard disks are ____? A) More expensive B) More portable C) Less rigid D) Slowly accessed As compared to diskettes, hard disks are more expensive