COMPUTER SYSTEM ARCHITECTURE MCQS PART 02

COMPUTER SYSTEM ARCHITECTURE MCQS PART 02

1. (2FAOC) 16 is equivalent to
(A) (195 084) 10       
(B) (001011111010 0000 1100)
(C) Both (A) and (B)       
(D) None of these
Ans: B

2. The average time required to reach a storage location in memory and obtain itscontents is called the
(A) seek time
(B) turnaround time
(C) access time
(D) transfer time
Ans: C

3. Which of the following is not a weighted code?
(A) Decimal Number system           
(B) Excess 3-cod
(C) Binary number System             
(D) None of these
Ans: B

4. The idea of cache memory is based
(A) on the property of locality of reference
(B) on the heuristic 90-10 rule
(C) on the fact that references generally tend to cluster
(D) all of the above
Ans: A

5. Which of the following is lowest in memory hierarchy?
(A) Cache memory   
(B) Secondary memory
(C) Registers
(D) RAM(E) None of these
Ans (B) Secondary memory

6. The addressing mode used in an instruction of the form ADD X Y, is
(A) Absolute
(B) indirect
(C) index
(D) none of these
Ans: C

7. If memory access takes 20 ns with cache and 110 ns with out it, then the ratio (cache uses a 10 ns memory) is
(A) 93%         
(B) 90%           
(C) 88%           
(D) 87%
Ans: B

8. In a memory-mapped I/O system, which of the following will not be there?
(A) LDA         
(B) IN        
(C) ADD         
(D) OUT
Ans: A
9. In a vectored interrupt.
(A) the branch address is assigned to a fixed location in memory.
(B) the interrupting source supplies the branch information to the processor through an interrupt vector.
(C) the branch address is obtained from a register in the processor
(D) none of the above
Ans: B

10. Von Neumann architecture is
(A) SISD
(B) SIMD
(C) MIMD
(D) MISD
Ans: A