W1-2-60-1-6
JOMO KENYATTA UNIVERSITY
OF
AGRICULTURE AND TECHNOLOGY
University Examinations 2013/2014
FIRST YEAR FIRST SEMESTER EXAMINATION FOR THE DIPLOMA IN INFORMATION TECHNOLOGY/DIPLOMA IN COUNTY GOVERNANCE
DIT 0101/HLG 0205 : INTRODUCTION TO COMPUTER
DATE: AUGUST 2013 TIME: 1½ HOURS
INSTRUCTIONS: ANSWER QUESTION ONE (COMPULSORY) AND
ANY OTHER TWO QUESTIONS.
QUESTION ONE (30 MARKS)
(a) Define the following terms as used in computing: [6 marks]
(i) Computer.
(ii) Data and information.
(iii) Computer virus.
(b) What is the meaning of Green computing? State an example of how it is being applied. [3 marks]
(c) What is the meaning of user interface? Discuss the two types of user interfaces. [4 marks]
(d) Define the term hardware devices. State the various categories of hardware devices. [6 marks]
(e) Giving an example for each, explain the difference between storage device and storage media. [6 marks]
(f) Define the term operating system. State three functions of the OS.
[5 marks]
QUESTION TWO (20 MARKS)
(a) Define information processing life cycle. [2 marks]
(b) What are the elements of information life cycle and how do they interact? [6 marks]
(c) List four types of computers. [2 marks]
(d) Memory or storage capacity is one of the most important components of a computer. How is computer memory categorized? Giving examples, briefly describe the two types of memory.
[10 marks]
QUESTION THREE (20 MARKS)
(a) The processor or the central processing unit (CPU) is the central nervous system of any computing device as it is where all processing of data and information happens. Briefly describe how processors are classified. [10 marks]
(b) Explain five factors that one should consider before buying a computer. [10 marks]
QUESTION FOUR (20 MARKS)
(a) Everyday, people around the world rely on different types of computers for a variety of reasons. Discuss the five categories of computer users. [10 marks]
(b) Briefly discuss five advantages and five disadvantages that users experience when working with computers. [10 marks]
