Computer Architecture and Organization Solved MCQs

Last modified on December 29th, 2018 at 6:18 pm

Computer Architecture and Organization Solved MCQs Questions Answers

1.  A top-level view of computer function and interconnection

  1. The processing required for a single instruction is called an
  2. Instruction processing
  3. Instruction cycle
  4. Memory instruction
  5. None of them

The right answer is

b) Instruction cycle

2. The fetched instruction is loaded into a register in the processor known as the

  1. Memory
  2. kernel
  3. instruction register (IR)
  4. memory registers

Right answer is

c) Instruction registers

3. The processor may perform some arithmetic or logic operation on data is

  1. data processing
  2. control
  3. Processor
  4. None of them

Right answer is

  1. Data processing

4. The contents of the AC are stored in a location

  1. 301
  2. 302
  3. 941
  4. 303

Right answer is

  1. c) 941

5. The collection of paths connecting the various modules is called

  1. A. interconnections
  2. communicating
  3. joining
  4. Interconnection structure

Right answer is

6. Interconnection structure

  1. 1 byte=
  2. 8 bits
  3. 16 bits
  4. 32 bits
  5. 64 bits

Right answer is

a) 8

7. As with sequential access, direct access involves ——————— mechanism

A. Read

B. Write

C. None

D.  Both a and b

Right answer is

d) both a and b

8. The mapping function is easily implemented using the

  1. Registers
  2. Memory
  3. Main memory address
  4. None of them

Right answer is

Main memory address

9. The problem with write back is that portions of main memory are

  1. valid
  2. invalid
  3. access
  4. None of them

Right answer is

b) Invalid

10. The——————— processor can be dynamically configured to support write-through caching.

  1. Pentium 2
  2. Pentium 3
  3. Pentium 4
  4. None of them

Right answer is

c) Pentium 4

11. The common form of read-mostly memory

  1. EPROM
  2. EEPROM
  3. Flash memory
  4. All of these

Right answer is

  1. All of these

12. A more attractive form of read-mostly memory is

  1. EPROM
  2. EEPROM
  3. Flash memory
  4. None of them

Right answer is

b) EEPROM

13. A number of chips can be grouped together to form a

  1. Main memory
  2. Memory bank
  3. Memory
  4. None of them

Right answer is

14. Memory bank

  1. EPROM stands for
  2. Erasable programmable read-only memory
  3. An electrically programmable read-only memory
  4. Error programmable read-only memory
  5. None of them

Right answer is

15. Erasable programmable read-only memory

  1. SDRAM stands for
  2. Static dynamic random access memory
  3. System dynamic random access memory
  4. Synchronous dynamic random access memory
  5. Syndrome dynamic random access memory

Right answer is

c) Synchronous dynamic random access memory

16. There are typically hundreds of sectors per

  1. Disk
  2. Track
  3. Gaps
  4. Disk data

Right answer is

Track

18. The information can then be scanned at the same rate by rotating the disk at a fixed speed, known as

  1. Constant angular velocity
  2. Multiple zone recording
  3. Disk data layout
  4. None of them

Right answer is

a) Constant angular velocity

19. The ———————- byte is a special bit pattern that delimits the beginning of the field.

  1. SYNCH
  2. ID
  3. 512
  4. 600

Right answer is

SYNCH

20. A —————– disk can be removed and replaced with another disk

  1. Nonremovable
  2. Removable
  3. Single Sided
  4. Double Sided

Right answer is

b) Removable

21. The set of all the tracks in the same relative position on the platter is referred to as a

  1. Platter
  2. Tracks
  3. Cylinder
  4. None of them

Right answer is

c) Cylinder

22. An external device attaches to the computer by a link to an

Input module

Output module

Both a and b

None of them

Right answer is

Both a and b

22. Suitable for communicating with remote devices

  1. Communication
  2. Machine-readable
  3. Human readable
  4. None of them

Right answer is

a) Communication

23.  In how many classify external devices

  1. Communication
  2. Machine-readable
  3. Human readable
  4. All of these

Right answer is

d) All of these

24. The user provides input through the

  1. Microphone
  2. keyboard
  3. monitor
  4. none of them

Right answer is

b) Keyboard

25. An I/O module is often responsible for error detection and for subsequently reporting errors to the

  1. Processor
  2. Main memory
  3. RAM
  4. None of them

Right answer is

a) processor

26. The most important system program is the

  1. MAC
  2. Operating system
  3. Linux
  4. None of them

Right answer is

Operating system

27. How many layers of a Computer System

  1. One
  2. Two
  3. Three
  4. Four

Right answer is

d) Four

28. The access function must provide protection of resources and data from ——————- users

  1. Unauthorized
  2. Authorized
  3. End
  4. None of them

Right answer is

a) Unauthorized

29. How many types of errors

  1. Internal and external hardware errors
  2. Memory errors
  3. Device failure
  4. All of these

Right answer is

d) All of these

30. Addition proceeds as if the two numbers were unsigned integers

  1. Integers
  2. Signed integers
  3. Unsigned integers
  4. None of them

Right answer is

Unsigned integers

31. Starting at any number on the circle, we can add positive k (or subtract negative k) to that number by moving k positions ————–

  1. clockwise
  2. anticlockwise
  3. counterclockwise
  4. none of them

Right answer is

a) clockwise

32. Compared with addition and subtraction, multiplication is a complex operation, whether performed in ——————————

  1. software
  2. hardware
  3. both a and b
  4. None of them

Right answer is

c) both a and b

33. Addition proceeds as if the two numbers were unsigned integers

  1. Integers
  2. Signed integers
  3. Unsigned integers
  4. None of them

Right answer is

Unsigned integers

34. Starting at any number on the circle, we can add positive k (or subtract negative k) to that number by moving k positions ————–

  1. clockwise
  2. anticlockwise
  3. counterclockwise
  4. none of them

Right answer is

a) clockwise

35. Compared with addition and subtraction, multiplication is a complex operation, whether performed in ——————————

  1. software
  2. hardware
  3. both a and b
  4. None of them

Right answer is

c) both a and b

36. We have seen that addition and subtraction can be performed on numbers in twos complement notation by treating them as

  1. integers
  2. signed integers
  3. unsigned integers
  4. none of them

Right answer is

c) unsigned integers

37. The division is somewhat more ———————– than multiplication

  1. complex
  2. easy
  3. different
  4. harder

Right answer is

a) complex

38. The operation is specified by a binary code, known as the

  1. operation code or opcode
  2. source operand reference
  3. result operand reference
  4. None of them

Right answer is

operation code or opcode

39. In most cases, the next instruction to be fetched immediately follows the

  1. Back instruction
  2. current instruction
  3. next instruction
  4. none of them

Right answer is

a) current instruction

40. During instruction execution, an instruction is read into an ——————– in the processor

  1. Memory buffer register (MBR)
  2. Address register (AD)
  3. instruction register (IR)
  4. index register (IR)

Right answer is

c) instruction register (IR)

41. These operations are performed primarily on data in   

  1. Random access memory
  2. main memory
  3. processor registers
  4. none of them

Right answer is

c) processor registers

42. The various types of data upon which operations are performed is called

  1. Data types
  2. Operation repertoire
  3. Instruction format
  4. None of them

Right answer is

a) data type

43. We have seen that addition and subtraction can be performed on numbers in twos complement notation by treating them as

  1. integers
  2. signed integers
  3. unsigned integers
  4. none of them

Right answer is

c) unsigned integers

44. The division is somewhat more ———————– than multiplication

  1. complex
  2. easy
  3. different
  4. harder

Right answer is

a) complex

45. The most common addressing techniques

  1. Stack
  2. Direct
  3. Indirect
  4. All of these

Right answer is

d) All of these

46. Different opcodes will use different

  1. addressing modes
  2. mode fields
  3. effective address
  4. none of them

Right answer is

a) addressing modes

47. The disadvantage of the immediate addressing is that the size of the number is restricted to the size of the

  1. Modes
  2. Operand field
  3. address field
  4. registers

Right answer is

c) address field

48. The most common uses of displacement addressing

  1. Relative addressing
  2. Base-register addressing
  3. Indexing
  4. All of these

Right answer is

d) All of these

49. For this addressing method, indexing is not used.

  1. 4. Offset
  2. Preindex
  3. Postindex
  4. None of them

Right answer is

Offset

50. The processor reads an instruction from memory (register, cache, main memory).

  1. Fetch instruction
  2. Fetch data
  3. Process data
  4. Interpret instruction

Right answer is

a) Fetch instruction

51. ———————— may be used only to hold data and cannot be employed in the calculation of an operand address.

  1. Arithmetic register
  2. Data registers
  3. Index register
  4. None of them

Right answer is

a) Data registers

52. Condition code bits are collected into one or more—————-

  1. Registers
  2. Address
  3. Flags
  4. Codes

Right answer is

a) registers

53. Contains a word of data to be written to memory or the word most recently read is

  1. Program counter
  2. Instruction register
  3. Memory address register
  4. Memory buffer register

Right answer is

d) memory buffer register

54. Interpret the opcode and perform the indicated operation.

  1. Fetch
  2. Execute   
  3. Interpret
  4. None of them

Right answer is

Execute

55. These determine the functions to be performed by the processor and its interaction with memory.

  1. Operation Performed
  2. Operands used
  3. Execution sequencing
  4. None of them

Right answer is

a) operation performed

56.  The use of a large set of registers should decrease the need to access

  1. Operations
  2. Memory
  3. Register
  4. None of them

Right answer is

b) memory

57. A —————– is defined to be the time it takes to fetch two operands from registers, perform an ALU operation, and store the result in a register.

  1. Machine instruction
  2. Machine cycle
  3. Instruction register
  4. Register operation

Right answer is

b) Machine cycle

58. The stages of the pipeline are an instruction—————— and an —————— that executes the instruction

  1. fetch
  2. execute/memory
  3. both a and b
  4. none of them

Right answer is

c) both a and b

59. For many years, the general trend in computer architecture and organization has been toward increasing processor complexity

  1. Instruction
  2. Addressing Modes
  3. Specialized registers
  4. All of these

Right answer is

d) All of these

Prof. Fazal Rehman Shamil
Researcher, Publisher of International Journal Of Software Technology & Science ISSN: 2616-5325
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