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Com 120: System Hardware Question Paper

Com 120: System Hardware

Course:Bachelor Of Science In Computer Science

Institution: Rongo University question papers

Exam Year:2018

RONGO UNIVERSITY
BACHELOR OF SCIENCE DEGREE IN COMPUTER SCIENCE
1ST YEAR 2ND SEMESTER COURSE CODE: COM 120 COURSE TITLE: SYSTEM HARDWARE
Instructions to candidates:
• Answer question ONE and any other TWO questions
• Marks are shown at the end of each question
• Show workings in the answer booklet for award of full marks
• Switch off your mobile phones
• Each question should begin on a fresh page
• Duration is 3 hours
This paper consists of 3 printed pages
Candidates should check the question paper to ascertain that all the pages are printed as
indicated and that no questions are missing.

SECTION A: COMPULSORY QUESTION [30 MARKS]

QUESTION ONE
Explain what an instruction set is
Explain what a motherboard is
Briefly describe the use of a Port in systems hardware
What does a ‘computer hardware or system hardware mean in a layman terms? Explain what a clock does in the CPU and its use
List four components of a CPU
Using a diagram, draw the Three PC components
Describe what RAM means and what it does
List any Four input devices and any Two Output devices

SECTION B: ANSWER ANY TWO QUESTIONS [20 MARK EACH]

QUESTION TWO
a) Differentiate between RAM and ROM in terms of functionalities [8 Marks]
b) Explain the difference between a programmed I/O and interrupt driven I/O[4 marks]
c) One of the major components of the CPU is the Control Unit; name the two locations
and their purpose.

QUESTION THREE
a)1 h the aid of a diagram, show clearly the storage device memory hierarchy[8 Marks]
b) State Three type of cables that can be used to connect computers to a network.[3 Marks]
c)Differentiate Firmware, Hardware and Software [9 Marks]

QUESTION FOUR
a) Describe in detail how DMA (dynamic memory allocation ) works
b) Explain the term Latency as used in reference to RAM
c) Differentiate between Male and Female computer ports
d) Explain the use of following two components of the CPU
i) Arithmetic Unit
ii) Instruction Decoding Unit

Com 120: System Hardware Question Paper

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