Computer Organization And Architecture MCQ
1. _______ specify where to get the source and destination operands for the operation specified by the _____:
a. Operand fields and opcode
b. Opcode and operand
c. Source and destination
d. CPU and memory
2. The source/destination of operands can be the or one of the general-purpose registers:
a. Memory
b. One
c. both
d. None of these
3. The complete set of op-codes for a particular microprocessor defines the ______ set for that processor:
a. Code
b. Function
c. Module
d. Instruction
4. Which is the method by which instructions are selected for execution:
a. Instruction selection
b. Selection control
c. Instruction sequencing
d. All of these
5. The simplest method of controlling sequence of instruction execution is to have each instruction explicitly specify:
a. The address of next instruction to be run
b. Address of previous instruction
c. Both a & b
d. None of these
6. what is the BCD for a decimal number 559:
a. [0101 0101 1001]BCD
b. [0101 0001 1010]
c. [0101 1001 1001]
d. [1001 1010 0101]
7. ______ are the codes that represent alphabetic characters, punctuation marks and other special characters:
a. Alphanumeric codes
b. ASCII codes
c. EBCDIC codes
d. All of these
8. Abbreviation ASCII stands for:
a. American standard code for information interchange
b. Abbreviation standard code for information interchange
c. Both
d. None of these
9. How many bit of ASCII code:
a. 6
b. 7
c. 5
d. 8
10. Which code used in transferring coded information from keyboards and to computer display and printers:
a. ASCII
b. EBCDIC
c. Both
d. None of these
11. Which code word was originally transmitted to produce a received word is called:
a. Non code word
b. Code word
c. Decoding
d. None of these
12. The hardware that does this is an :
a. Error detecting decoder
b. Error correcting decoder
c. Both
d. None of these
13. Hamming codes was developed in ______ :
a. 1953
b. 1950
c. 1945
d. 1956
14. ______ between two code words is defined as the number of bits that must be changed for one code to another:
a. Hamming codes
b. Hamming distance
c. Both
d. None of these
15. It is actually a method for constructing codes with a minimum distance of :
a. 2
b. 4
c. 3
d. 5
16. How many stages of instruction cycle:
a. 5
b. 6
c. 4
d. 7
17. Which are stages of instruction cycle:
a. Fetch
b. Decode
c. Execute
d. Derive effective address of the instruction
a. All of these
18. Which instruction are 32 bits long , with extra 16 bits:
a. Memory reference instruction
b. Memory reference format
c. Both
d. None of these
19. Which is addressed by sign extending the 16- bit displacement to 32-bit:
a. Memory address
b. Effective memory address
c. Both a and b
d. None of these
20. Which are instruction in which two machine cycle are required:
a. Instruction cycle
b. Memory reference instruction
c. Both
d. None of these
21. ______ of information in a human brain and a computer happens differently:
a. Intelligence
b. Storage
c. Versatility
d. Diligence
22. Which are the basic operation for converting:
a. Inputting
b. Storing
c. Processing
d. Outputting
e. Controlling
f. All of these
23. The control unit and arithmetic logic unit are know as the ________:
a. Central program unit
b. CPU
c. Central primary unit
d. None
24. Which unit is comparable to the central nervous system in the human body:
a. Output unit
b. Control unit
c. Input unit
d. All of these
25. ______ of the primary memory of the computer is limited:
a. Storage capacity
b. Magnetic disk
c. Both
d. None of these
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