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Computer architecture and design interview questions

Following are Computer architecture and design interview questions: Reply if you have any answers.

1. What is pipelining?
2. What are the five stages in a DLX pipeline?
3. For a pipeline with ‘n’ stages, what’s the ideal throughput? What prevents us from achieving this ideal throughput?
4. What are the different hazards? How do you avoid them?
5. Instead of just 5-8 pipe stages why not have, say, a pipeline with 50 pipe stages?
6. What are Branch Prediction and Branch Target Buffers?
7. How do you handle precise exceptions or interrupts?
8. What is a cache?
9. What’s the difference between Write-Through and Write-Back Caches? Explain advantages and disadvantages of each.
10. Cache Size is 64KB, Block size is 32B and the cache is Two-Way Set Associative. For a 32-bit physical address, give the division between Block Offset, Index and Tag.
11. What is Virtual Memory?
12. What is Cache Coherency?
13. What is MESI?
14. What is a Snooping cache?
15. What are the components in a Microprocessor?
16. What is ACBF(Hex) divided by 16?
17. Convert 65(Hex) to Binary
18. Convert a number to its two’s compliment and back
19. The CPU is busy but you want to stop and do some other task. How do you do it?

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