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University of Barishal

Department of Computer Science and Engineering

Final Exam

Course Title: Computer Architecture and Organization (CSE-2203)

Semester: 4th | Session: 17-18

Time: 180 minutes | Marks: 60.00

Course Teacher: Dr. Md. Manjur Ahmed

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1.

a) Explain Moor's Law in Computer architecture.

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4 Marks
b) Differentiate between SRAM and DRAM

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4 Marks
c) Write short notes on the following: i) Hit time ii) Miss penalty

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4 Marks
2.

a) Analyze the step(s): (i) no interrupt, (ii) interrupt pending.

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4 Marks
b) 8080 has 16 bit address bus. Then how much memory space it will provide?

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2 Marks
c) Show the Asynchronous timing diagram for system bus Read/Write cycle.

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6 Marks
3.

a) Analyze the concept of "Write Back" in order to avoid the bottleneck of "Write Through".

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4 Marks
b) Let's design a cache of 64KByte. Main memory is 16Mbytes. Cache block is 4 types (2 bit word identifier) and rest of bits is block identifier. Use the concept of direct mapping address.

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8 Marks
4.

a) What are the differences among direct mapping, associative mapping and set-associative mapping?

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4 Marks
b) Assume that there are three (03) small caches, each consisting of eight (08) one-word blocks. One cache is fully associative, a second is two-way set associative, and third is direct mapped. Now, find the number of misses for each cache organization given the following sequence of block address: 0, 8, 0, 6, 8

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5 Marks
c) List and briefly define three (03) techniques for performing I/O.

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3 Marks
5.

a) Explain the performance of a processor.

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3 Marks
b) Von Neumann computer architecture is the basic computer architecture for the modern computer. Explain this.

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5 Marks
c) Describe the multiplexed bus with advantages and disadvantages.

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4 Marks
6.

a) Describe the necessity of I/O modules?

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2 Marks
b) In Direct Memory Access (DMA) operation, describe about "Cycle Stealing"

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6 Marks
c) Describe O/S as a resource manager in I/O controller.

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4 Marks
7.

a) What is instruction? Mention the elements of an instruction.

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4 Marks
b) Briefly describe the data processing and data movement functions of computer.

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3 Marks
c) Briefly describe the instruction cycle of program execution.

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5 Marks
8.

a) Distinguish between 0-addresses, 2-addresses, 3-addresses instruction with the example a = b + c.

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6 Marks
b) Explain the trade-off (more or less) of the number of addresses for instruction.

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6 Marks
View 151 Topic-wise Questions for this Course

Contributors of this Question:

Role Name Date
Prepared By (Teacher): Dr. Md. Manjur Ahmed N/A
Uploaded By: Onebyzero Edu (Test User) Aug. 1, 2024, 4:22 p.m.
Converted By (Img/PDF to Text): Obaydul Hasan Nayeem Nov. 16, 2025, 12:19 a.m.
Reviewed By: Obaydul Hasan Nayeem Nov. 16, 2025, 12:45 p.m.
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