COMPUTER SYSTEM ARCHITECTURE MCQS PART 12

COMPUTER SYSTEM ARCHITECTURE MCQS PART 12

1. A floating point number that has a O in the MSB of mantissa is said to
have_____.
A. Overflow
B. Underflow
C. Important number
D. Undefined
Ans: B

2. Translation from symbolic program into Binary is done in_____.
A. Two passes.
B. Directly
C. Three passes.
D. Four passes.
Ans: A

3. The instruction ‘ORG O’ is a______.
A. Machine Instruction.          
B. Pseudo instruction.
C. High level instruction.           
D. Memory instruction.
Ans: B

4. ‘Aging registers’ are _______.
A. Counters which indicate how long ago their associated pages have been referenced.
B. Registers which keep track of when the program was last accessed.
C. Counters to keep track of last accessed instruction.
D. Counters to keep track of the latest data structures referred.
Ans: A

5. Memory unit accessed by content is called______.
A. Read only memory
B. Programmable Memory
C. Virtual Memory
D. Associative Memory
Ans: D

6. _________ register keeps tracks of the instructions stored in program stored in memory.
A. AR (Address Register)
B. XR (Index Register)
C. PC (Program Counter)
D. AC (Accumulator)
Ans: C

7. n bits in operation code imply that there are ___________ possible distinct operators.
A. 2n       
B. 2n            
C. n/2           
D. n2
Ans: B

8. A three input NOR gate gives logic high output only when_____.
A. one input is high
B. one input is low
C. two input are low
D. all input are high
Ans: D

9. The circuit converting binary data in to decimal is_____.
A. Encoder
B. Multiplexer
C. Decoder
D.Code converter
Ans: D

10. The multiplicand register & multiplier register of a hardware circuit implementing booth's algorithm have (11101) & (1100). The result shall be
A. (812)10        
B. (-12)10           
C. (12)10          
D. (-812)10
Ans: A