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Computer Fundamentals &Amp; Troubleshooting Question Paper

Computer Fundamentals &Amp; Troubleshooting

Course:Bachelor Of Business And Information Technology

Institution: Strathmore University question papers

Exam Year:2011

BBT 1101: COMPUTER FUNDAMENTALS & TROUBLESHOOTING
DATE: 21st March, 2011 TIME: 2 HOURS

Question 1 is compulsory.
Answer Question 1 and any TWO others
All questions carry 20 marks each.

QUESTION 1
a) Define a computer algorithm. (1 marks)
b) Explain the meaning of an input peripheral, giving two example devices that are in this
category. (3 marks)
c) Briefly explain the difference between the router, switch, hub as used in networking.
(6 marks)
d) Explain the advantage that binary number system has over the other systems in
computing. (2 marks)
e)
I) Define the following types of storage; Primary storage, Secondary storage,
Tertiary storage, Off-line storage.
II) Give an example storage device for each of the types of storage mentioned in
e) I) above. (8 marks)

QUESTION 2
a) Sketch a well-labeled diagram of the main components of a computer system.
Briefly describe the function of each component. (8 marks)
b) Briefly describe how the execution of the following mathematical operation is
handled between the input/output devices, memory, Arithmetic and Logic Unit
and the Control Unit; 3 + 5 = 8 (4 marks)
c) Explain the meaning of each of the following characteristics of computer
storage;
I) Accessibility
II) Capacity
III) Performance
IV) Volatility (8 marks)
QUESTION 3
Perform the following number systems operations;
a)
0 1 1 0 1 +
1 0 1 1 1
------------- (1 mark)

b)
1 1 0 1 1 1 0
- 1 0 1 1 1
(1 mark)

c)
i) 1 0 1 1 × 1 0 1 0
ii) 1 0 1.1 0 1 × 1 1 0.0 1
(4 marks)

d)
1 0 1 ) 1 1 0 1 1
(2 marks)

e)
i) Convert the following binary value to decimal
1 0 0 1 0 1 0 1 1 0 1
(2 marks)
ii) Convert the following hexadecimal values to binary
3A
E7

(4 marks)
iii) Convert the following binary values to hexadecimal
1010010
11011101
(4 marks)
iv) Convert the following hexadecimal value to decimal
C0E7
(2 marks)

QUESTION 4
a) State any two forms of representing a computer algorithm? (2 marks)
b) Draw a flow chart to find the sum of even numbers between 0 to 39
(10 marks)
c) Explain the difference between algorithm animation and algorithms simulation.
What advantage does algorithm simulation have over algorithm animation?
(8 marks)

QUESTION 5
a) Sketch a labeled OSI model and describe the function of each layer. State the
unit of communication at each layer (8 marks)
b) Sketch the general frame format of a packet. Briefly describe the function of
each field in the frame (4 marks)
c) You are an IT consult and you need to advise a client about the kind of computer
they need to purchase. What factors will you consider before you recommend a
product? (8 marks

Computer Fundamentals &Amp; Troubleshooting Question Paper

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