UNIVERSITY EXAMINATIONS: 2013/2014
ORDINARY EXAMINATION FOR THE DIPLOMA IN
INFORMATION TECHNOLOGY
DIT 104 COMPUTER ORGANIZATION AND
APPLICATION
DATE: AUGUST, 2014 TIME: 1½HOURS
INSTRUCTIONS: Answer Any Three Questions
QUESTION ONE
a) Perform the following (show ALL your working)
i. 11110111-1101011 [2.5Marks]
ii. 1100101+1011011 [2.5Marks]
iii. Convert 276 octal to decimal [3Marks]
iv. Convert 364 hexadecimal to decimal [3Marks]
v. Convert 585 decimal to binary [3Marks]
b) Explain THREE reasons as to why computer system needs a secondary storage.
[6 Marks]
QUESTION TWO
a) With the aid of examples, explain the THREE main secondary storage devices
[9 Marks]
b) Distinguish between an analog & a digital signal. [3 Marks]
c) Explain FOUR ways of aligning text [4 Marks]
d) Outline FOUR benefits of computer network to the organization.
[4 Marks]
QUESTION THREE
a) Explain the use of the following icons in windows operating system environment.
i. Recycle bin
ii. My network places
iii. My computer
iv. My documents [8 Marks]
b) Discuss the difference between IMPACT and NON-IMPACT Printers
[4 Marks]
c) Explain FOUR types of charts that can be created in Electronic spreadsheet
application [8 Marks]
QUESTION FOUR
a) Explain FIVE advantages of tailor-made over the off-the -shelf packages
[10 Marks]
b) Explain FIVE characteristics of an integrated software [5 Marks]
c) Describe the FIVE computer language generations [5 Marks]
QUESTION FIVE
a) Distinguish between
i. Application and system software [2 Marks]
ii. Loaders and linkers [2 Marks]
iii. Compilers and interpreters [2 Marks]
iv. Viruses and worms [2 Marks]
b) Explain the functions of the following keyboard shortcut keys.
i. ALT + F
ii. ALT + V
iii. CTRL + D
iv. CTRL + Z
v. CTRL + Y [5 Marks]
c) The student also wanted to play games using the computer. State FOUR input
devices the student can use to play games [4 Marks]
d) Explain THREE reasons why computers are considered to be useful in business
organizations [3 Marks
