Today’s Computers Basic Questions and Answer

1. Which of the following device can store large amounts of data?

A. Floppy Disk                         B. Hard Disk

C. CDROM                                  D. Zip Disk

Answer: B

2. VIRUS stands for

A. Very Important Resource Under Search

B. Virtual Information Resource Under Seize

C. Verify Interchange Result Until Source

D. Very Important Record User Searched

Answer: B

3. The processing of an application takes place between a client and a ____ processor.

A. Front end                                 B. Back end
C. Both A and B                          D. none of these

Answer: C

4. Which of the following program is not a utility?

A. Debugger                                  B. Editor
C. Spooler                                      D. all of the above

Answer: C

5. Poor response times are usually caused by

A. Process busy                             B. High I/O rates
C. High paging rates                     D. Any of the above

Answer: D

6. Swapping

A. Works best with many small partitions
B. Allows many programs to use memory simultaneously
C. Allows each program in turn to use the memory
D. Does not work with overlaying

Answer: C

7. ____ transforms one interface into another interface

A. Program                                    B. Software
C. Data                                          D. None

Answer: B

8. What is the full form of CRT?

A. current ray tube                         B. current ray technology

C. cathode ray tube                        D. cathode ray technology

Answer: C

9. Which storage device is mounted on ‘reels’?

A. Floppy Disk                            B. Hard Disk

C. Magnetic Tapes                       D. CDROM

Answer: C

10. MOS stands for _____

A. Metal Oxide Semiconductor    B. Most Often Store

C. Method Organized Stack         D. None of these

Answer: A

11. The Analytical Engine developed during First Generation of computers used ___ as a memory unit

A. RAM                                       B. Floppies

C. Cards                                       D. Counter Wheels

Answer: D

12. Which of the memories below is often used in a typical computer operation?

A. RAM                                       B. ROM

C. FDD                                        D. HDD

Answer: A

13. Which of the following companies is a leader in manufacture of Hard Disk Drives?

A. Samsung                                  B. IBM

C. Fujitsu                                     D. Seagate

Answer: D

14. Floppy Disk Drives were originally designed by

A. IBM                                         B. Sony

C. Panasonic                             D. Samsung

Answer: B

15. Floppy Disk Drives were first introduced by which of the following computer manufacturers?

A. IBM                                         B. Sony

C. Panasonic                              D. Compaq

Answer: A

16. Which technology is used in a CDROM Drive?

A. Mechanical                              B. Electromechanical

C. Optical                                     D. Fiber Optical

Answer: C

17. Data (information) is stored in computers as

A. Files                                        B. Directories

C. Floppies                                   D. Matter

Answer: A

18. Nortel is a company which manufactures:

A. Software                                  B. Processors

C. Cables                                     D. Network equipment

Answer: D

19. Which computer peripheral manufacturer quotes “Empowering your PC”?

A. Canon                                     B. Epson

C. Mercury                                   D. Samsung

Answer: C

20. What is the name of the 64-bit Microprocessor developed by AMD?

A. Opteron                                   B. RISC-9000

C. iMac                                        D. Athlon

Answer: A

21. What is the name of the series of Laptop computers manufactured by IBM called?

A. LapPad                                    B. ThinkPad

C. Aptiva                                     D. Notepad

Answer: B

22. A source program is

A. a program written in a machine language

B. a program to be translated into machine language

C. a machine language translation of a program written in a

D. None of these

Answer: B

23. IC are classified on the basis of ___

A. Manufacturing company         B. Type of computer

C. Number of transistors              D. None of these

Answer: C

24. Programs stored in ROM are called ___

a. Hardware                                 B. Firmware

C. Software                                  D. None of these

Answer: B

25. In a high resolution mode, the number of dots in a line will usually be

A. 320                                          B. 640

C. 760                                          D. 900

Answer: B

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Computer Science questions and answers for interview

1.	A triangular-wave oscillator can consist of an op-amp comparator, followed by a (n)
	A. differentiator B. amplifier C. integrator D. multivibrator Answer: Option C

2.	The circuits in the 8085 that provide the arithmetic and logic functions are called the __________.
	A. CPU B. ALU C. I/O D. bus decoder Answer: Option B

3.	The unit for frequency is the
	A. hertz B. ampere C. watt D. second Answer: Option A

4.	What is the standard TTL noise margin?
	A. 5.0 V B. 0.2 V C. 0.8 V D. 0.4 V Answer: Option D

5.	A pn junction allows current flow when
	A. the p-type material is more positive than the n-type material B. the n-type material is more positive than the p-type material C. both the n-type and p-type materials have the same potential D. there is no potential on the n-type or p-type materials Answer: Option A

6.	In a PLL, to obtain lock, the signal frequency must:
	A. come within the lock range B. be less than the capture frequency C. come within the capture range D. be greater than the capture frequency Answer: Option C

7.	Typical isolation amplifiers use optical coupling.
	A. True B. False Answer: Option B

8.	The largest branch resistance in a parallel circuit carries the largest branch current.
	A. True B. False Answer: Option B

9.	The input impedance is ______ for the amplifier in the given circuit. The data sheet values are Zin = 3 M, Zout = 80 , and Aol = 250,000.
	A. 4.7 k B. 22.7 k C. 3 M D. 68.6 k Answer: Option A

10.	A virtual ground is a(n) ______ ground because this point is at zero volts.
	A. ordinary B. voltage C. chassis D. earth Answer: Option B

11.	A NAND gate has:
	A. LOW inputs and a LOW output B. HIGH inputs and a HIGH output C. LOW inputs and a HIGH output D. None of the these Answer: Option C

12.	What is the current through the capacitor in the given circuit?
	A. 3.5 mA B. 5.5 mA C. 9 mA D. 11.4 mA Answer: Option A

13.	The 555 timer can be used in either the bistable mode or the monostable mode.
	A. True B. False Answer: Option B

14.	A transformer turns ratio of ________ will be needed to match an output impedance of 5 k to an 8 speaker.
	A. 5:1 B. 8:1 C. 25:1 D. 625:1 Answer: Option C

15.	In a transistor, collector current is controlled by:
	A. collector voltage B. base current C. collector resistance D. all of the above Answer: Option B

16.	A 24 V peak source is connected across a 900 H inductor. If the frequency of the source is 22 kHz, what is the reactive power?
	A. 2.3 VAR B. 4.6 VAR C. 9.3 VAR D. 0 VAR Answer: Option A

17.	VCE approximately equals _______ when a transistor is in saturation.
	A. VCC B. VB C. 0.2 V D. 0.7 V Answer: Option C

18.	If a 100 resistance is connected to a 100 capacitive reactance in a series RC circuit, the impedance equals 200 .
	A. True B. False Answer: Option B

19.	To reduce the number of pins on the IC package, manufacturers often use ___________.
	A. MOSFET architecture B. address multiplexing C. address decoding D. address demultiplexing Answer: Option B

20.	What is the voltage across the inductor in the given circuit on the falling edge of the first input pulse?
	A. –0.2 V B. 0.2 V C. –9.8 V D. 9.8 V Answer: Option A

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