This section contains more frequently asked Computer Organization and Architecture Basics MCQs in the various University Level and Competitive Examinations.
PRACTICE IT NOW TO SHARPEN YOUR CONCEPT AND KNOWLEDGE
1. If the main memory is of 8K bytes and the cache memory is of 2K words. It uses associative mapping. Then each word of cache memory shall be_____.
- 11 bits
- 21 bits
- 16 bits
- 20 bits
C. 16 bits
2. A Stack-organised Computer uses instruction of _____.
- Indirect addressing
- Two-addressing
- Zero addressing
- Index addressing
C. Zero addressing
3. 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.
4. In a memory-mapped I/O system, which of the following will not be there?
- LDA
- IN
- ADD
- OUT
A. LDA
5. If memory access takes 20 ns with cache and 110 ns without it, then the ratio (cache uses a 10 ns memory) is _____.
- 0.93
- 0.9
- 0.88
- 0.87
B. 0.9
6. In computers, subtraction is generally carried out by ______.
- 9’s complement
- 10’s complement
- 1’s complement
- 2’s complement
C. 1’s complement
7. Assembly language ________.
- uses alphabetic codes in place of binary numbers used in machine language
- is the easiest language to write programs
- need not be translated into machine language
- None of these
A. uses alphabetic codes in place of binary numbers used in machine language
8. Processors of all computers, whether micro, mini or mainframe must have
- ALU
- Primary Storage
- Control unit
- All of above
B. Primary Storage
9. What is the control unit’s function in the CPU?
- To transfer data to primary storage
- to store program instruction
- to perform logic operations
- to decode program instruction
- none of these
E. none of these
