COMPUTER SYSTEM ARCHITECTURE MCQS PART 54

COMPUTER SYSTEM ARCHITECTURE MCQS PART 54

1. _______machine instruction creates branching to some specified location in main memory if result of last ALU operation is Zero or Zero flag is set:
a. Branch on One    
b. Branch on Three 
c. Branch on Nine
d. Branch on Zero
ANSWER D

2. Full form of CAR:
a. Control address register        
b. Content address register
c. Condition accumulator resource    
d. Code address register
ANSWER A
3. Two types of microinstructions are:
a. Branching 
b. Non-branching    
c. Both a & b     
d. None of these
ANSWER C

4. Which are 3 ways to determine address of next micro instruction to be executed:
a. Next sequential address   
b. Branching     
c. Interrupt testing
d. All of these
ANSWER D

5. Branching can be________:
a. Conditional     
b. Unconditional     
c. Both a & b    
d. None of these
ANSWER C

6. In which branching condition is tested which is determined by status bit of ALU:
a. Unconditional      
b. Conditional         
c. Both a & b        
d. None of these
ANSWER B

7. which branch is achieved by fixing status bit that output of multiplexer is always one:
a. Unconditional    
b. Conditional       
c. Looping    
d. All of these
ANSWER A

8. Which register is used to store addresses of control memory from where instruction is fetched:
a. MAR        
b. BAR       
c. CAR        
d. DAR
ANSWER C

9. Control ROM is the control memory that holds:
a. Control words        
b. Memory words    
c. Multiplexers 
d. Decoders
ANSWER A

10. Opcode is the machine instruction obtained from decoding instruction stored in:
a. Stack pointer    
b. Address pointer    
c. Instruction register
d. Incrementer
ANSWER C