INTRODUCTION TO COMPUTER SYSTEMS (ICS)



INTRODUCTION TO COMPUTER SYSTEMS (ICS)

OBJECTIVE TYPE QUESTIONS

1. The capacity of 3.5 inch floppy disk is

a) 1.40 MB

b) 1.44 GB

c) 1.40 GB

d) 1.44 MB

Ans : d

2. What’s the function of Memory Address Register (MAR)

a) holds the address of the instruction (or data) which is to be executed.

b) holds the data or instructions fetched from the memory location

c) stores the instruction picked up from the memory.

d) points to the instruction that needs to be fetched from the memory

Ans: a

3. The brain of any computer system is

a) Control Unit

b) Arithmetic Logic Unit

c) Central Processing Unit

d) Storage Unit

Ans : c

4. Which statement is valid?

a) 1KB = 1024 bytes

b) 1 MB=2048 bytes

c) 1 MB = 1000 kilobytes

d) 1 KB = 1000 bytes

Ans : a

5. Instruction in computer languages consists of

a) OPCODE

b) OPERAND

c) Both of above

d) None of above

Ans : c

6. The most commonly used standard data code to represent alphabetical, numerical and punctuation characters used in electronic data processing system is called

a) ASCII

b) EBCDIC

c) BCD

d) All of above

Ans : a

7. The difference between memory and storage is that memory is …… and storage is ……

a) Temporary, permanent

b) Permanent, temporary

c) Slow, fast

d) All of above

Ans : a

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

a) Leech

b) Squid

c) Slug

d) Glitch

Ans : d

9. Word processing, spreadsheet, and photo-editing are examples of:

a) application software.

b) system software.

c) operating system software.

d) platform software.

Ans : a

10. The term bit is short for:

a) megabyte.

b) binary language.

c) binary digit.

d) binary number.

Ans : c

11. The decimal equivalent of the binary number 11100001111 is

a) 1806

b) 1807

c) 2806

d) 2011

Ans : b

12. Primary storage is _____ as compared to secondary storage.

a) Slow and inexpensive

b) Fast and inexpensive

c) Fast and expensive

d) Slow and expensive

Ans : c

13. The original ASCII code used _____ bits of each byte, reserving that last bit for error checking.

a) 8

b) 7

c) 6

d) 4

Ans : b

14. What is the name of the reading device which makes use of photosensors and laser technologies to interpret printed, typed or even hand-written data directly from the source documents?

a) MICR

b) OCR

c) Mark-sensing device

d) ATM

Ans : b

15. What is the number of bits needed for an address in a 4 K memory?

a) 4

b) 8

c) 12

d) 16

Ans : c

16. One million bytes of information is abbreviated as

a) Bit

b) Mega Byte

c) Kilo Byte

d) Giga Byte

Ans : b

17. How many bits of address bus are required to address 1024KB memory?

a)24 bits

b)20 bits

c)25 bits

d)12 bits

Ans : b

18. The clock speed of 1ns , what is the speed of the processor?

a) 20 MIPS

b) 10 MIPS

c) 100 MIPS

d) 200 MIPS

Ans:c

19. The octal equivalent of the number 11010.1011 is

e) 32.15

f) 63.51

g) 63.51

h) None of the above

Ans : a

20. A PC with a 486DX2 processor runs internally at 50Mhz. What speed would its external logic be running?

i) l0Mhz

j) 25Mhz

k) 50Mhz

l) 100 Mhz

Ans : b

21. Which of the following converts high level language into machine language?

a) Assembler

b) Compiler

c) Interpreter

d) Loader

Ans : b

22. The term bit is short for:

a) megabyte.

b) binary language.

c) binary digit.

d) binary number.

Ans : c

23. The difference between memory and storage is that the memory is _________ and storage is __________

a) Temporary, Permanent

b) Permanent, Temporary

c) Slow, fast

d) None of the above

Ans : a

24. Execution of two or more programs by a single CPU is called.

a) Multiprocessing

b) Timesharing

c) Multiprogramming

d) None of the above

Ans : c

25. Which statement is valid?

a) 1KB = 1024 bytes

b) 1 MB=2048 bytes

c) 1 MB = 1000 kilobytes

d) 1 KB = 1000 bytes

Ans : a

26. What’s the function of Memory Address Register (MAR)

a) holds the address of the instruction (or data) which is to be executed.

b) holds the data or instructions fetched from the memory location

c) stores the instruction picked up from the memory.

d) points to the instruction that needs to be fetched from the memory

Ans : a

27. Word processing, spreadsheet, and photo-editing are examples of:

a) application software.

b) system software.

c) operating system software.

d) platform software.

Ans : a

28. A ____________ is approximately one billion bytes.

a) kilobyte

b) bit

c) gigabyte

d) megabyte

Ans : c

29. Which of the following is the correct order of the four major functions of a computer?

a) Process à Output à Input à Storage

b) Input à Outputà Process à Storage

c) Process à Storage à Input à Output

d) Input à Process à Output à Storage

Ans : d

30. Which of the following is Volatile memory?

a) RAM

b) ROM

c) Hard Disk

d) Floppy Disk

Ans : a

31. Function of Processor is,

a) Decode, Execute, Fetch

b) Decode, Fetch, Execute

c) Fetch, Decode, Execute

d) Examine, Fetch, Decode

Ans : c

32. What’s the function of Memory Buffer Register (MBR)?

a) Holds the address of the instruction (or data) which is to be executed.

b) Holds the data or instruction fetched from the memory location

c) Stores the instruction picked up from the memory

d) Points the instruction that needs to fetched from the memory

Ans : b

33. System program that transforms high level language into a binary form known as object code is called,

a) Assembler

b) Compiler

c) Interpreter

d) Loader

Ans : b

34. The ALU and control unit of most of the microcomputers are combined and manufacture on a single silicon chip. What is it called?

a) Monochip

b) Microprocessor

c) ALU

d) Control Unit

Ans : b

35. What is the control unit's function in the CPU?

a) To transfer data to primary storage

b) To store program instruction

c) To perform logic operations

d) To decode program instruction

Ans : d

36. Which of the following registers is used to keep track of address of the memory location where the next instruction is located?

a) Memory Address Register

b) Memory Data Register

c) Instruction Register

d) Program Counter

Ans : d

37. The ascending order or a data Hierarchy is,

a) bit - bytes - fields - record - file – database

b) bit - bytes - record - field - file – database

c) bytes - bit- field - record - file – database

d) bytes -bit - record - field - file – database

Ans : a

38. Which of the following is the 1's complement of 10?

a. 01

b. 110

c. 11

d. 10

Ans : a

39. Which part interprets program instructions and initiate control operations.

a) Input

b) Storage unit

c) Logic unit

d) Control unit

Ans : d

40. The time required for the fetching and execution of one simple machine instruction is

a) Delay time

b) CPU cycle

c) Real time

d) Seek time

Ans : b

41. Any type of storage that is used for holding information between steps in its processing is,

a) CPU

b) Primary storage

c) Internal storage

d) Intermediate storage

Ans : d

42. The sum of a binary 10101010 plus a binary 01111 is: 

a) 128

b) 170

c) 185

d) 190

43. What is the resultant in binary of the decimal problem 49 + 01 = ? 

a) 01010101

b) 00110101

c) 00110010

d) 00110001

44. With the number 8BF16, what is the positional weight of the 8? 

a) 16

b) 256

c) 4096

d) 8192

45. What is the HEX value of a binary 1111111111? 

a) 3FF

b) 400

c) 200

d) FFF

46. What is the binary equivalent of octal number 1126? 

a) 10110011000

b) 010 101 110

c) 1001010110

d) 10010101110

47. What is the decimal value of 0011 1001 0111BCD? 

a) 7927

b) 919

c) 1627

d) 397

48. What is the result when a decimal 5238 is converted to base 16?

a) 327.375

b) 12.166

c) 1388

d) 1476

49. The ascending order or a data Hierarchy is,

a. bit - bytes - fields - record - file – database

b. bit - bytes - record - field - file – database

c. bytes - bit- field - record - file – database

d. bytes -bit - record - field - file – database

50. Which of the following registers is used to keep track of address of the memory location where the next instruction is located?

a. Memory Address Register

b. Memory Data Register

c. Instruction Register

d. Program Counter

51. What’s the function of Memory Buffer Register (MBR)?

a. Holds the address of the instruction (or data) which is to be executed.

b. Holds the data or instruction fetched from the memory location

c. Stores the instruction picked up from the memory

d. Points the instruction that needs to fetched from the memory

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