BIT 2308  BBIT 2308  BAC 1303  BSD 1301  BISF 1303  HUMAN COMPUTER INTERACTION.

UNIVERSITY EXAMINATIONS: 2020/2021
EXAMINATION FOR THE DEGREE OF BACHELOR OF SCIENCE IN
INFORMATION TECHNOLOGY / BUSINESS IN I. T/ APPLIED
COMPUTING/ INFO. SECURITY & FORENSICS/ SOFTWARE DEV.
BIT 2308/ BBIT 2308/ BAC 1303/ BSD 1301/ BISF 1303:
HUMAN COMPUTER INTERACTION (HCI)
FULL TIME/ PART TIME/ DISTANCE LEARNING
ORDINARY EXAMINATION
DATE: DECEMBER, 2021 TIME: 2 HOURS
INSTRUCTIONS: Question ONE IS COMPULSORY, Choose TWO OTHER Questions

QUESTION ONE (20 marks) Compulsory
a). Define ergonomics and discuss three main goals of HCI. [3 Marks]
b). Explain the following principles in HCI [6 Marks]
i) Affordance
ii) Usability
iii) Visibility
c). Jacob Nielsen produced ten golden rules as design guidelines for systems. Discuss any four.
[4 Marks]
d). Discuss any four interaction styles that are applicable in computing giving its advantages and
disadvantages [7 Marks]
QUESTION TW0 (15 marks)
a). KCA University is designing an intranet system to ensure that marketing staff always have
the most up-to-date information on products and special offers, and have immediate
access to students’ requests. Give a root definition for this system using the CATWOE
elements [5 Marks]
b). Differentiate between Ecological and Constructivism theories as used in HCI
[5 Marks]
c). Using an example define and describe the concept of GOMS [5 Marks]
QESTION THREE (15 marks)
a). Differentiate the terms as used in HCI: [5 Marks]
i) “gulf of execution” and “gulf of evaluation”.
ii) Knowledge in the head and knowledge in the world
b). What is user centered design as used in HCI [5 Marks]
c). With the help of a diagram describe the simple lifecycle model [5 Marks]
QUESTION FOUR (15 marks)
a). Fitts’ Law states that big targets at close distance are reached faster than small targets
at long range. Outline the principles used when applying Fitts’ Law to interface designs.
[5 Marks]
b). Explain the way in which menus favour knowledge in the world over knowledge in the
head. [3 Marks]
c). Why is web page design different to designing for printed media [2 Marks]
d). With the help of a diagram describe the extended Human Information Processing Model
[5 Marks]

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