KNEC KCSE Computer Studies Paper 1 Question Paper / 2014 Kakamega County Mock
2014 Kakamega County Mock
Computer Studies Paper 1
SECTION A (40 Marks)
Answer ALL the questions in SECTION
1.
(a) Distinguish between Computer Aided Instruction and Computer Aided Learning(2mks)
(b) Describe three advantages of using computers in banking(3mks)
5 marks
2.
Identify two reasons why a computer needs to be connected to a stable power
supply
2 marks
3.
Mention four things that are likely to cause strain- in the computer room
2 marks
4.
State any four components found on the computer motherboard
2 marks
5.
Give four human attributes used during biometric analysis.
2 marks
6.
George connected new multimedia speakers to his computer and tried to play his favorite
music CD, but no sound came out. Suggest four problems that might have occurred
2 marks
7.
Give any two peripheral devices which get their power supply through ports.
2 marks
8.
List any three techniques used by the operating system to perform job scheduling.
3 marks
9.
Raphael selected a paragraph in word processing. Explain what happened after pressing
the following keys on the keyboard.
(i) Ctrl + X
(ii) Ctrl + U
(iii)Ctrl + V
3 marks
10.
(a) Outline three qualities of a good programmer (3mks)
(b) State four computer related courses offered at National polytechnics in Kenya(2mks)
5 marks
11.
List any two methods used to secure data in a database (1mk)
3 marks
12.
A school intends to set-up an e-learning system. Briefly describe four problems that are
likely to be encountered.
2 marks
13.
State the difference between pasteboard and printable page.
2 marks
14.
Outline four features of spreadsheet that are useful in financial modeling
4 marks
15.
Briefly describe the two most common protocols for the internet.
3 marks
SECTION B (60 Marks)
Answer Question 16 (Compulsory) and Any other THREE in this Section
16.
(a) Mention three characteristics of web scripting language (3mks)
(b) List three things which are considered as improper use of language rule which may
cause syntax errors (3mks)
(c) Mumias sugar company pays casual employees based on the number of hours worked
as follows
Less than 10 hours @ khs.100/= per hour
Up to 15 hours @ khs150/= per hour
More than 15 hours @khs200/= /per hour
(i) Write a pseudo code that will prompt the user to input the name, rate hours worked.
The pseudo code should output the name, hours worked and the wage paid for five
employees (4mks)
(ii) Draw a flowchart for the pseudo code (5mks)
15 marks
17.
(a) List two advantages of digital signals over analogue signals (2mks)
(b) If ASCII-7 represent letter B as 1000010 suggest how letter P will be represented (2mk)
(c) Convert 57.410 to its Octal equivalent (3mks)
(d) Determine the value of X in this equation (3mks) X2 + 11012=1068
(e) Convert 7AEH to a decimal number(2mks)
(f) Use twos compliment to subtract 15 from 7 (2mks)
(g) State two use of hexadecimal notation in a computer (1mk)
15 marks
18.
(a) List two protocols that operate at the application layer (1mk)
(b) Describe three main features of single mode fibre optic cable (3mks)
(c) Describe three factors to consider when choosing transmission media (3mks)
(d) Explain two techniques used to control data flow between the nodesin an Ethernet
topology (2mks)
(e) Use the diagram below to answer the questions that follow
(i) Identify the topology represented by the diagram above (1mk)
(ii) Give two advantages of the above topology (2mks)
(iii)Explain how MSAU is used in (i) (1mk)
(f) State two limitation of networking (2mks)
15 marks
19.
(a) Highlight three circumstances that necessitate the development of new information
systems (3mks)
(b) Describe three factors that cause system entropy(3mks)
(c) State two tools that a system analyst may use to design a system (1mk)
(d) Outline three factors that should be considered when sourcing for hardware and
software resources required for a new system (3mks)
(e) Name two circumstances in which it is better to use a Questionnaire than an Interview for
gathering information(2mk)
(f) State three reasons why users may resist the introduction of an information system in
their place of work (3mks)
15 marks
20.
(a)
(i) What is robot (1mk)
(ii) Mention four advantages of robot (2mks)
(b) Describe three major components of expert system (3mks)
(c) Describe the trends in computer technology base your argument on size, memory and
speed (3mks)
(d) What is flaming (1mk)
(e) State four limitations of natural language processing (2mks)
(f) Discuss the effects of ICT on employment (3mks)
