UNIVERSITY EXAMINATIONS: 2015/2016
EXAMINATION FOR THE DIPLOMA IN BUSINESS/ INFORMATION
TECHNOLOGY
DBIT104 DNF101 COMPUTER ORGANIZATION & APPLICATION
/COMPUTER APPLICATION SOFTWARE
DATE: AUGUST 2016 TIME: 1½HOURS
INSTRUCTIONS: Answer Any THREE Questions.
QUESTION ONE
a) Computers were developed because of the advantages they have over human beings. Give
any five characteristics of computers that make work more efficiently (5 Marks)
b) Explain the five components of a database system (5 Marks)
c) Electronic business information systems have turned the world into a global village. Give
advantages that have resulted due to their use (5 Marks)
d) Give any five functions of the operating system (5 Marks)
QUESTION TWO
a) State and explain any three classifications of computers based on their capacity and size
(6 Marks)
b) Explain the main units of the Central processing unit (CPU) giving their functions
(6 Marks)
c) Differentiate between RAM and ROM (4 Marks)
d) Briefly explain the four categories of operating systems (4 Marks)
QUESTION THREE
a) Define the following terms (10 Marks)
(i) Compute (ii) Computer program (iii) Data (iv) Information (v) Software
b) Discuss the forms of information that a computer can process (5 Marks)
c) Describe the types of processing that can be performed on the information in B above
(5 Marks)
QUESTION FOUR
a) Define the following computer terms
(i) Bit (ii) Byte (iii) Hardware (iv) Anti-virus (v) Tailor made Software (10 Marks)
(b) Outline what actions the following combinations of keyboard keys perform
i.) CTRL + A
ii.) CTRL + B
iii.) CTRL + L
iv.) CTRL + V
v.) CTRL + ALT + DELETE (5 Marks)
c) Utility/service programs are normally supplied by the manufacturers to make the computer
work efficiently. Briefly explain any five such programs (5 Marks)
QUESTION FIVE
a) ABC is a new marketing company that is set to open in January 2016. The management
board is torn between using manual systems and computerized systems. In your own words
give advice to the ABC board on the best option citing your reasons (10 Marks)
b) i) Give five advantages of using DBMS (5 Marks)
ii)With the aid of a well labeled diagram explain the components of a computer system
(5 Marks)
