Almost all MCQs of Computer

July 2015

past Paper 2000.

(B) Please choose the most appropriate answer from the given set of answers to fill the blanks.
11. During the program execution, temporary/intermediate values are stored in _____________.
a. Registers
b. Peripherals
c. LAN
d. None of these
12. The objects can be inherited by _____________.
a. A single object only
b. Multiple objects
c. Both (a) and (b)
d. Either (a) or (a)
13. The operating system may perform _____________ operation to manage the memory while running a large program.
a. Sorting
b. Scheduling
c. Paging
d. None of these
14. When the LAN is arranged in such a way that each computer is connected directly to the HUB the configuration can be termed as _____________ network.
a. Bus
b. Star
c. Ring
d. None of these
15. To communicate with other computers over a telephone line the computer must have _____________ installed.
a. Telephone set
b. Modem
c. LAN Card
d. None of these
16. When each item of data in a database is directly linked with every other item of data, the database is called _____________.
a. Relational
b. Hierarchical
c. Network
d. None of these
17. _____________ is the most efficient method to reduce the duplication of data.
a. Duplication
c. Normalisation
c. Empty fields
d. None of these
18. The _____________ operation changes the coordinate values of objects being displayed.
a. Transformation
b. Windowing
c. Both (a) and (b)
d. None of these
19. A linear sequential software development model is also referred to as ____________ .
a. Prototype Model
b. RAD Model
c. Spiral Model
d. None of these
20. State Transition Diagram gives information of ___________.
a. Data Flow
b. Entry Relationship
c. Control Flow
d. None of these
Paper 2002
8. (A) Write only True or False in the Answer Book. Do not reproduce the questions.
(1) The terms “type cast” and “type conversion” have different semantics i.e. they have different effects on the program execution.TRUE
(2) Alignment restrictions of modern RISC-architectures forces compilers to occasionally introduce “holes” and “padding” for record structures to ensure efficient access of record elements.
(3) In a language with garbage collection, the programmer need not worry about heap memory management.True
(4) In order to execute a program by interpretive execution, the interpreter needs to execute on the system on which the program is to be run.
(5) A GUI is a Graphical Utility Interface. False
(6) The study of algorithms began in the 1900s when electronic computers began to be used.
(7) A bus is a part of the computer that decides if a value should be stored as an integer or floating point.False
(8) Peripheral devices handle the coordination of a computer’s activities. True
(9) Get method in HTML forms is used for debugging.False
(10) “Pine” is an example of e-mail utility. TRue
(B) Please choose the most appropriate answer from the given set of answers.
(11) State Transition Diagram gives information of 
(a) Prototype Model
(b) RAD Model
(c) Spiral Model
(d) None of these
(12) The concept of meaning represented by an algorithm is known as its:
(a) Control Structure
(b) Sequence
(c) Semantics
(d) Syntax
(13) Each cell of memory is numbered and that number is referred to as the cell’s
(a) Block
(b) Identity 
(c) Address
(d) Size
(14) Main memory is called RAM because
(a) It is volatile, like a ram’s temper.
(b) The computer starts at address 0 and reads every byte until it reaches the correct address.
(c) It can Read all memory
(d) The memory is accessible randomly
(15) To use internet, the computer must have
(a) Telephone
(b) Modem
(c) ISP Connection 
(d) All of the above
2003
8--(A) Write only True or False in the Answer Book. Do not reproduce the question. (1x10)
(1) A feature of an operating system that allows more than one program to run simultaneously is called Multitasking. Flase
(2) A trackball operates like a joystick on its back. It is extremely useful when there isn't enough space to use a mouse,False
(3) Digitizing Tablet is a'special Input device that is mainly used to digitize vector-oriented design or pictures. True not completely sure 
(4) Dedicated line is a high speed cable line that is not permanently wired into the internet. 
(5) A Router is a network device that helps LANs and WANs achieve interoperability and connectivity and thai can link LANs that have different netwoik topdldgies, such as Ethernet and Token Ring. true
(6) Internet Protocol is a routable protocol in the backbone that is responsible for IP addressing, routing, and the fragmentation and reassembly of IP packets. True
(7) Telnet is an Internet connection that enables a user to terminate an active connection with a computer at a retoete site.
(8) ESD stands for Electronic Static Distance.False
(9) IRQ is Interrupt Request. TRue
(10) Copyright computer programs made available on trial basis are called shareware. True
(B) Please choose^he most appropriate answer from the given set of answers. . (.1x5)
(11) What is the long form of 'CMOS'?
(a) Complimentary Metal Oxide Semiconductor 
(b) Complex Metal Oxide Semiconductor
(c) Controller Metal Oxide Semiconductor
(d) Complimentary Metal Oxide Sets.
(12) What is a Y-Connector? '
(a) A'Y-Shaped splitter cable that divides a source input into two output signals.
(b) A Y-Shaped splitter connector that divides a source input into two output signals.
(c) A Y-Shaped splitter card that divides'a source input into two output signals.
(d) None of the above. 
(13) What do you mean by IBM-Compatible'?
(a) A computer that has a processor that is compatible vvith the original IBM PC.
(b) A computer that has a processor that is similar to original IBM PC 
(c) A computer that has a casing that is similar original IBM PC. 
(d) None of the above
(14) What do you mean by "virtual? Select'all that apply:
(a) In general, it distinguishes something that is merely conceptual from something that has physical reality,
(b) Real 
(c) Not real. 
(d) None of the above
(15) Select correct statement describing a term 'stateless'?
(a) Having all information about what occurred previously
(b) Having some information aboot what occurred previously
(c) Having no information about what occurred previously
(d) Having new information about what occurred previously
2004
i) When all access and processing is done in one location, a computer system is said to be 
(a) networked 
(b) distributed 
(c) centralized 
(d) linked
(ii) Tools to change PROM chips, called 
(a) chip kits 
(b) RAM burners
(c) PROM burners 
(d) none of
these
(iii) The type of modulation that changes the height of the single is called (a) frequency 
(b) phase 
(c) amplitude 
(d) prophase
(iv) A connection for similar network:
(a) satellite 
(b) bridge 
(c) gateway 
(d) fax
(v) The technology whereby part of the program is stored on disk and is brought into memory for execution as needed is called
(a) memory allocation
(b) virtual storage
(c) interrupts
(d) prioritized memory
(C) Write '"True" or "False" in your answer book about the following statements: (5)
(i) Application software may be either custom or packaged. True
(ii) RISC technology uses more instructions than traditional computers.True
(iii) A ring network has no central host computer.True
(iv) Satellites use line-of-sight transmission.False
(v) Time-sharing is both event-driven and time-drive
2005
8. (A) For whom the following abbreviations stand for
(i) DNS : Domain Name System
(ii) CMOS : Complementary metal–oxide–semiconductor
(iii) OSI : Open Systems Interconnection
(iv) CASE : Computer Aided Software engineering
(v) DDE 

(B) Fill in the blanks with the most suitable options for the following statements:
(i) A data path to transfer data is called…………………Physical medium (not sure)
(ii) What is combination of I-time and E-time called.............................Machine Cycle
(iii) The process of applying a formula to a key is called……………….
(iv) Distortion in the received signals is called………………………
(v) DMA is a technique to transfer data between memory and ……………..IO devices
(C) Write “TRUE” or “FALSE”
(i) RISC technology used fewer instructions then traditional computers. True
(ii) Direct file organization is combination of sequential and indexed file organization.True
(iii) Fax is a connection of similar networks. True not sure
(iv) Let G=(V,E) be an undirected graph when G is a free tree.True
(v) An entity instance is a single occurrence of an entity True

Basic MCQs of Computer Science (IT) for NTS and PSC  Test
1. Mostly which of the following device is used to carry user files?
A. Floppy Disk B. Hard Disk
C. RAM D. CDROM
Answer: A
2. Which device is used to backup the data?
A. Floppy Disk B. Tape
C. Network Drive. D. All of the above
Answer: D
3. In order to play and hear sound on a computer, one needs:
A. a sound card and speakers B. a microphone
C. all of them required D. none of them required
Answer: A
4. Which of the following are the cheapest memory devices in terms of Cost/Bit?
A. Semiconductor memories B. Magnetic Disks
C. Compact Disks D. Magnetic Tapes
Answer: C
5. Which of the following are the best units of data on an external storage device?
A. Bits B. Bytes
C. Hertz D. Clock cycles
Answer: B
6. Which of the following have the fastest access time?
A. Semiconductor Memories B. Magnetic Disks
C. Magnetic Tapes D. Compact Disks
Answer: A
7. Which of the following is a read only memory storage device?
A. Floppy Disk B. CDROM
C. Hard Disk D. None of these
Answer: B
8. Which of the following is a programming language?
A. Lotus B. Pascal
C. MS-Excel D. Netscape
Answer: B
9. What is a compiler?
A. A compiler does a conversion line by line as the program is run
B. A compiler converts the whole of a higher level program code into machine code in one step
C. A compiler is a general purpose language providing very efficient execution
D. None of the above
Answer: B
10. What is an interpreter?
A. An interpreter does the conversion line by line as the program is run
B. An interpreter is the representation of the system being designed
C. An interpreter is a general purpose language providing very efficient execution
D. None of the above
Answer: B
11. When a key is pressed on the keyboard, which standard is used for converting the keystroke into the corresponding bits?
A. ANSI B. ASCII
C. EBCDIC D. ISO
Answer: A
13. A Pixel is ………
A. A computer program that draws picture
B. A picture stored in secondary memory
C. The smallest resolvable part of a picture
D. None of these
Answer: C
14. Which device is used as the standard pointing device in a Graphical User Environment?
A. Keyboard B. Mouse
C. Joystick D. Track ball
Answer: B
15. Which number system is usually followed in a typical 32-bit computer?
A. 2 B. 10
C. 16 D. 32
Answer: A
16. Which number system is usually followed in a typical 32-bit computer?
A. Binary B. Decimal
C. Hexadecimal D. Octal
Answer: A
17. Which of the following is not an output device?
A. Scanner B. Printer
C. Flat Screen D. Touch Screen
Answer: D
18. Which of the following devices have a limitation that we can only store information to it but cannot erase or modify it?
A. Floppy Disk B. Hard Disk
C. Tape Drive D. CDROM
Answer: D
19. Which technology is used in Compact disks?
A. Mechanical B. Electrical
C. Electro Magnetic D. Laser
Answer: D
20. Which of the following storage devices can store maximum amount of data?
A. Floppy Disk B. Hard Disk
C. Compact Disk D. Magneto Optic Disk
Answer: B
21. Which of the following is the largest manufacturer of Hard Disk Drives?
A. IBM B. Seagate
C. Microsoft D. 3M
Answer: B
22. The programs which are as permanent as hardware and stored in ROM is known as
A. Hardware B. Software
C. Firmware D. ROM ware
Answer: C
23. Memory unit is one part of
A. Input device B. Control unit
C. Output device D. Central Processing Unit
Answer: D
24.Who built the first Mechanical Calculator
A. Joseph Marie Jacquard B. John Mauchly
C. Blaise Pascal D. Howard Aiken
Answer: C
25. The earliest calculating devices are
A. Abacus B. Clock
C. Difference Engine D. None of these
Answer: A
26. Punched cards were first introduced by
A. Powers B. Pascal
C. Jacquard D. Herman Hollerith
Answer: D
27. Word length of a Personal Computer is ___
A. 4 bits B. 8 bits
C. 16 bits D. 64 bits
Answer: B
28. Cursor is a ____
A. Pixel B. Thin blinking line
C. Pointing device D. None of these
Answer: B
29. Operating system, editors, and debuggers comes under?
A. System Software B. Application Software
C. Utilities D. None of the above
Answer: A
30. Which device is required for the Internet connection?
A. Joystick B. Modem
C. CD Drive D. NIC Card
Answer: B
31. What does DMA stand for?
A. Distinct Memory Access B. Direct Memory Access
C. Direct Module Access D. Direct Memory Allocation
Answer: B
32. When did John Napier develop logarithm?
A. 1416 B. 1614
C. 1641 D. 1804
Answer: B
33. A normal CD-ROM usually can store up to __________data?
A. 680 KB B. 680 Bytes
C. 680 MB D. 680 GB
Answer: C
34. ATM stands for?
A. Automatic Talking Machine
B. Automatic Teller Machine
C. Analog Teller Machine
D. Automatic Ticketing Machine
Answer:B
35. The Second Generation Computer was based on ………….
A. Vacuum Tube B. Silicon Chips
C. Transistor D. Bio Chips
Answer: C
36. The Third Generation Computer was made with ………….
A. Vacuum Tube B. Discrete Components
C. IC D. Bio Chips
Answer: C
37. he BIOS is the abbreviation of ………….
A. Basic Input Output System B. Best Input Output System
C. Basic Input Output Symbol D. Base Input Output System
Answer: A
38. What do you call a single point on a computer screen
A. Cell B. Element
C. Pixel D. Bit
Answer: C
39. How was the generation of computer classified?
A. by the device used in memory & processor
B. by the speed of computer
C. by the model of the computer
D. by the accuracy of computer
Answer: A
40. Through which device the main components of the computer communicate with each other?
A. Keyboard B. System Bus
C. Monitor D. Memory
Answer: B
41. Which is a valid program to access the Internet?
A. Access B. Front Page
C. Windows Explorer D. Netscape
Answer: D
42. Which one is the Low Level Language?
A. Assembly B. Visual Basic
C. Java D. C++
Answer: A
43. Which is a volatile memory?
A. ROM B. BIOS
C. PROM D. RAM
Answer: D
44. The digital signals can be represented by
A. Binary Codes B. 0 and 1
C. High and Low D. all of the above
Answer: D
45. Which program can be used for email?
A. Internet Explorer B. Outlook Express
C. NetMeeting D. FrontPage
Answer: B
46. Modulator-demodulator is a device that converts:
A. Digital signal into analog signal
B. Analog signal into digital signal
C. Both A and B
D. None of the above
Answer: C
47. _______ is used for scanning the pictures and putting them in digitized form in the computer.
A. CD-ROM B. Plotter
C. Bar-coder D. Scanner
Answer: D
48. Animator, 3D Studio, Corel Draw and Flash are………….
A. Word processors B. Spreadsheet packages
C. Multimedia S/W D. None of the above
Answer: C
49. Which statement is valid?
A. 1 KB = 8 bytes B. 1 MB = 8 KB
C. 1 KB = 1024 bytes D. 1 MB = 1024 bytes
Answer: C
50. Which device is used to process data?
A. CPU B. RAM
C. DCU D. VDU
Answer: A
51. Who is known as the father of Computer Science?
A. Charles Babbage B. Howard Aiken
C. Dr. Herman Hollerith D. Blaise Pascal
Answer: A
52. What is the capacity of a 3.5” Floppy Disk?
A. 360KB B. 720KB
C. 1.2MB D. 1.44MB
Answer: D
53. A Personal Computer (PC) is a …………….. Computer.
A. Super B. Main Frame
C. Mini D. Micro
Answer: D
54. What type of printers are Dot Matrix Printers?
A. Laser B. Inkjet
C. Impact D. Drum
Answer: C
55. What is the full form of RAM?
A. Read Access Memory B. Random Access Memory
C. Rapid access Memory D. none
Answer: B -

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