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-2SECTION THEORY
-
I
60 marks
AnswerALL questions.
1.
(a)
Name the input or output device that is BEST suited to perform EACH of the following activities:
(D
Viewing images from one computer to another over the Internet
(1mark)
(ii)
Producing architectural drawings such as building plans
(1mark)
(iiD
Playing games using the computer
(1mark)
(iv)
Retrieving information electronically from a code on a product
(1mark)
Identiffing users by scanning their fingerprints
(1mark)
(v) (b)
Kim wants to purchase a printer. State TWO characteristics of printers that Kim should (2 marks) consider when purchasing the printer.
(c)
State the general name associated with devices such as a printer.
(d)
Explain what is meant by a 'bistable'device.
:
(1mark) (2 marks)
Total l0 marks
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(a)
State the computer term that is described in EACH of the
(i)
(iD
Secret information is obtained by spying on competitors or opponents
t
(1 mark)
A malicious program that is designed to comrpt files on a computer or to cause (1 mark) the computer hardware to malfunction
(iii)
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(iv)
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(v) (b)
following statements:
Using a computer to alter company
(1 mark)
data
(1 mark)
State the technical term that describes EACH of the types of misuse of data labelled (i), as underlined in the passage below.
(ii), (iii), (iv) and (v)
A commercial bank has experienced several security breaches. In one instance, an employee who was interviewed for promotion was not selected because he (i) used emails to mount a vicious attack on a supervisor. Some employees were (ii) electronically accessing other employees' systems without permission. The organization then hired a software expert to install additional software which would be able to (iii) monitor the use of the computers by employees. However, since the installation ofthe new software, there has been an increase in the rate at which people are able to (iv) access cash from some customers' accounts at the AIM during weekends. The computer system also allows websites to place cookies on the company's computers to (v) collect personal information on certain employees. (5 marks)
Total l0 marks
GO ON TO THE NEXT PAGE 01229020/F 20t3
-5-
4-
(a)
State TWO differences between
(b)
Give TWo reasons why it is necessary for computers to have secondary storage. (2 marks)
(c)
Write the numbers (I) to (VI) in your answer booklet. Match EACH term in column X with the letter (A) to (F) that corresponds to the MOST appropriate term in column Y.
RAM and ROM.
(2 marks)
EACH term in column Y must be uesd only once. (Your answer should show ONLY the Roman numerals and the corresponding letters you have chosen.)
Column X
I
Used for data archival purposes but must be accessed
Column Y
A
Flash drive
Aset of metal disks mounted on a spindle
B
Floppy disk
Itr
Has a limited storage of 1.44 MB
C
Magnetic tape
TV
Uses laser beam technology to read or write data
D
Memory cards
.v.
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E
Hard disk
vI,
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F
Digital Versatile Disk (DVD)
sequentially
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(6
mark)
Total l0 marks
GO ON TO THE NEXT PAGE 01229020/F 2013
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-9SECTION
III
PROBLEM SOLYING AhlD PROGRAMMII\IG
- 45 marks
AnswerALL questions. 9.
(a)
Draw a flow char,t to illustrate the followiug frggment of code:
IF
P>Q THEN PA=P_Q ELSE QA: Q P
(7 marks)
Copy and complete the following table using the code in (a) above.
P
o
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PA
QA
(Y or N) I
I
I
0
0
I
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0 (8 marks)
Total 15 marks
GO ON TO THE NEXT PAGE 01229020tr. 2013
