Dr. A.P.J. Abdul Kalam University BE IV SEM (IT) Computer Architecture [IT-228] June 2021 Question Paper

Dr. A.P.J. Abdul Kalam University

Bachelor of Engineering

Fourth Semester Examination, June-2021

Computer Architecture [IT-228]

Branch - IT

Time: 3:00 Hrs Max Marks 70

Note : 1. Attempt any five questions out of eight.

2. Each question carries equal marks.

Q.1 (a) Draw Von Neumann model of computer and explain all the subsystems

of computer.

(b) What do you mean by SHIFT micro operation? Explain all three types of

SHIFT micro-operation.

Q.2 (a) Draw one stage of arithmetic unit with its function table.

(b) Explain all the CPU registers with their size and functions. Explain how

instructions are executed in a computer?

Q.3 (a) Explain signed-magnitude, signed 1’s and 2’s complement

representations of negative numbers.

(b) Explain the process of multiplication using BOOTH method. Solve –5×2

using Booth method.

Q.4 (a) Differentiate hardwired and microprogrammed control units. Define

microprogram sequencer.

(b) What do you mean by zero, one two and three address instructions? Give

suitable examples.

Q.5 What is Cache? Explain the principle of “Locality of references”. Enlist and

explain page replacement algorithms.

Q6. (a) What is Mapping? Name all the types of cache mapping and explain any

one in detail.

(b) What are the advantages of parallel processing? Define the terms:

Pipeline, speed up ratio and memory interleaving

Q.7 (a) Write a short note on virtual memory.

(b) What is multiprocessor? Explain the characteristics of multiprocessors.

Q.8 Write short notes on any two of the followings:

(i) Addressing modes (ii) Hardwired control unit

(iii) DMA data transfer (iv) Daisy chaining 

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