RGPV COA

Computer Organization Architecture Question Bank-Solution with explanation

Contains most asked questions from previous years examinations (COA).

Q1. Write short note on Direct Memory Access (DMA)?
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Q2. Describe the Von Neumann Model and explain the functioning of its components?
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Q3. Explain various types of addressing modes?
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Q4. What is function of Control unit? Differentiate Hardwired and Microprogrammed units?
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Q5. Take suitable examples and explain 1’s and 2’s complement of binary numbers?
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Q6. What do you understand by micro-operation? List types of micro-operation and explain them?
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Q7. What are the different categories of 8085 instruction set ? Give suitable examples for each class.
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Q8. With the help of suitable diagrams explain simplex, half duplex and full duplex transmission?
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Q9. What is Register Transfer Language (RTL)?
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Q10. What is cache memory? Explain following-
i) Cache hit
ii) Average access time
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Q11. What is pipelining?
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Q12. Name three techniques of cache mapping and explain any one in detail?
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Q13. Explain the working of following CPU registers:
i) MAR
ii) MDR
iii) AC
iv) IR
v) PC
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Q14. A virtual memory system has an address space of 8K words, a memory space of 4K words and page block sizes of 1K words. The following page reference changes occur during a given time interval. (Only page changes are listed. If the same page is referenced again, it is not listed twice.).
420126140102357
Determine the four pages that are resident in main memory after each page reference change if the replacement algorithm is used-
(i) FIFO
(ii) LRU?
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Q15. Perform the arithmetic operations below with binary numbers and with negative numbers in signed 2’s complement representation. Use seven bits to accommodate each number together with its sign.
i) (+35) + (+40)
ii) (-35) + (-40)
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Q16. What is Instruction Cycle ?
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Q17. Differentiate between RISC and CISC.
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Q18. Explain the Memory Hierarchy in short ?
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Q19. What is Memory organization?
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Q20. Differentiate between Simultaneous and Hierarchical access memory organization?
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