DIT105  DBIT104  COMPUTER APPLICATION SOFTWARE.

UNIVERSITY EXAMINATIONS: 2016/2017
EXAMINATION FOR THE DIPLOMA IN INFORMATION
TECHNOLOGY/DIPLOMA IN BUSINESS INFORMATION
TECHNOLOGY
DIT105 DBIT104 COMPUTER APPLICATION SOFTWARE
DATE: AUGUST, 2017 TIME: 2 HOURS
INSTRUCTIONS: Answer question ONE and any other TWO questions.

QUESTION ONE (30 MARKS) – COMPULSORY
a) Automating organizations activities using computers brings about efficiency and
effectiveness. In light of this:
i. Outline five advantages of using computers (5 Marks)
ii. Outline five disadvantages of using computers (5 Marks)
iii. Explain five factors you would look for when purchasing an application
software. (5 Marks)
b) Explain the five computer generations outlining how they evolved as far as
processing is concerned.
(5 Marks)
c) Explain five views as used in ms-word application. (5 Marks)
d) Differentiate between the following terms. (5 Marks)
i. Header & Footer
ii. Editing & Formatting
iii. Ms-excel & Ms- PowerPoint
iv. Superscript & Subscript
v. Alignment and Margin
QUESTION TWO (20 MARKS)
a) Name 5 characteristics of a computer (5 Marks)
b) Convert the following binary numbers to decimal (5 Marks)
i. 11111 ii.111011 iii.0.1111 iv. 00001111 v.111111
c) Explain how you would carry out the following operations (4 Marks)
i. Open an existing document
ii. Create a new document
d) Discuss SIX computer application areas (6 Marks)
e) Convert the following Octal numbers to binary (5 Marks)
i. 454 ii. 657 iii. 555.56 iv.236 v. 743
QUESTION THREE (20 MARKS)
a) XYZ Company intends to computerize its operations but before they do that the
management is carrying out a research to see whether the benefits of this change
outweigh the costs. You happen to be one of the respondents in the department where
this research is being carried out. Outline any five reasons the company employees
would resist this move. (5 Marks)
b) Explain the four classifications of computers (8 Marks)
c) Differentiate data from information (2 Marks)
d) Explain FIVE classifications of computer Hardware. (5 Marks)
QUESTION FOUR (20 MARKS)
a) With the aid of a well labelled diagram explain the computer system architecture
(10 Marks)
b) What is computer Hardware? (2 Marks)
c) Name two internet browsers (2 Marks)
d) Write the following abbreviations in full and indicate their capacities (3 Marks)
i. KB
ii. MB
iii. GB
e) Explain what you understand by the term Operating System and give an example.
(3 Marks)
QUESTION FIVE (20 MARKS)
a) Briefly explain what you understand by RAM and ROM (4 Marks)
b) Semi-conductor memories gained popularity over the core memories give reasons for
this. (4 Marks)
c) What is systems software? Name the three categories of system software
(5 Marks)
d) Explain any FIVE crimes committed using computers. (5 Marks)
e) Name the four basic number systems in use today (2 Marks)

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