This section contains more frequently asked Computer Architecture and Organization MCQs in the various University Level and Competitive Examinations.
PRACTICE IT NOW TO SHARPEN YOUR CONCEPT AND KNOWLEDGE
1. (2FAOC) 16 is equivalent to
- (195 084)10
- (001011111010 0000 1100)2
- Both (A) and (B)
- None of these
B. (001011111010 0000 1100)2
2. The average time required to reach a storage location in memory and obtain its contents is called the
- seek time
- turnaround time
- access time
- transfer time
C. access time
3. Which of the following is not a weighted code?
- Decimal Number system
- Excess 3-cod
- Binary number System
- None of these
B. Excess 3-cod
4. The idea of cache memory is based
- on the property of locality of reference
- on the heuristic 90-10 rule
- on the fact that references generally tend to cluster
- all of the above
A. on the property of locality of reference
5. Which of the following is lowest in memory hierarchy?
- Cache memory
- Secondary memory
- Registers
- RAM
- None of these
B. Secondary memory
6. The addressing mode used in an instruction of the form ADD X Y, is
- Absolute
- indirect
- index
- none of these
C. index
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
- 0.93
- 0.9
- 0.88
- 0.87
B. 0.9
8. In a memory-mapped I/O system, which of the following will not be there?
- LDA
- IN
- ADD
- OUT
A. LDA
9. In a vectored interrupt.
- the branch address is assigned to a fixed location in memory.
- the interrupting source supplies the branch information to the processor through an interrupt vector.
- the branch address is obtained from a register in the processor
- none of the above
B. the interrupting source supplies the branch information to the processor through
an interrupt vector.
10. Von Neumann architecture is
- SISD
- SIMD
- MIMD
- MISD
A. SISD
