UNIVERSITY EXAMINATIONS
OCT/NOV 2022
INF3720
Human-Computer Interaction
Date: October 2022
Duration: 2 hours
Total marks: 100
Examiners:
First: Dr B. Chipangura
Second: Prof M. van der Merwe
External: Dr. G. Toko
This is a closed book examination, under IRIS invigilation. Unisa exam policy applies.
Instructions to students
1. Answer all questions in the given order.
2. You are not allowed to use Mobile devices, Calculators or Oracle XE during this exam.
3. Students must upload their answer scripts in a single PDF file (answer scripts must not be
password protected or uploaded as “read-only” files.)
4. NO emailed scripts will be accepted.
5. Students are advised to review submissions (answer scripts) to ensure legibility and that the
correct answer script file has been uploaded.
6. Students are permitted to resubmit their answer scripts should their initial submission be
unsatisfactory.
7. Incorrect file format and uncollated answer scripts will not be considered.
8. Incorrect answer scripts and/or submissions made on unofficial examination platforms
(including the invigilator cellphone application) will not be marked and no opportunity will
be granted for resubmission.
9. Mark awarded for incomplete submission will be the student’s final mark. No opportunity
for resubmission will be granted.
10. Mark awarded for illegible scanned submission will be the student’s final mark. No
opportunity for resubmission will be granted.
11. Submissions will only be accepted from registered student accounts.
12. Students who have not utilised IRIS invigilation tool will be subjected to disciplinary
processes.
13. Students suspected of dishonest conduct during the examinations will be subjected to
disciplinary processes. UNISA has zero tolerance for plagiarism and/or any other forms of
academic dishonesty.
14. Students are provided 30 minutes to submit their answer scripts after the official
examination time. Submissions made after the official examination time will be rejected by
the examination regulations and will not be marked.
15. Students experiencing network or load shedding challenges are advised to apply together
with supporting evidence for an Aegrotat within 3 days of the examination session.
For students experiencing technical challenges, contact the SCSC 080 000 1870 or email
or refer to Get-Help for the list of additional contact numbers.
MEMO [Turn over]
Open Rubric
, INF3720
OCT/NOV
Question 20 Marks
Choose the most applicable answer and write it down on your answer sheet. For example, 1. A
1.1 The fact that the myUnisa website follows a standardised format and structure for all modules implies that
the following usability goal has been met: (2 marks)
A. Efficiency
B. Utility
C. Safety
D. Memorability
1.2 Assume that you have been contracted to do the interactive design for a local town’s electronic library
system. You have designed a non-functional collection of screens that demonstrate how a library user will
borrow a digital book. This activity is an example of: (2 marks)
A. Visceral design
B. Designing alternatives
C. Prototyping
D. Establishing requirements
1.3 Integrating interaction design with an agile software development approach is useful because (2 marks)
A. An agile approach incorporates tight iterations, feedback, and collaboration with the customer.
B. By using an agile approach, developers can start coding immediately to save time and costs.
C. An agile approach does not require that all critical design elements are captured in a design document.
D. An agile approach requires all software development processes to be specified before development
begins to ensure rigour.
1.4 Virtual shopping carts, baskets, shelves, checkouts, cash registers, payment options and alternative online
shopping techniques show: (2 marks)
A. How future scenarios (visions) enable users to interact with information in their everyday lives.
B. How conceptual models provide scenarios of how society can use future generations of imagined
technologies.
C. How theories help identify factors relevant to the design and evaluation of interactive products.
D. How seemingly similar tasks can have quite different conceptual models and metaphors underlying
their design.
1.5 People are inherently social. How have various digital technologies enabled us to overcome social
distance, even while physical distancing measures have been in place during the COVID-19 pandemic
lockdown? (2 marks)
A. Face-to-face meetings have been replaced to a large extent by online meetings using sound and video,
or sound only.
B. Much informal verbal communication has been replaced by texting and using emojis.
C. Creating, sending, and forwarding humoristic videos and sound clips have replaced the telling of jokes
to relieve stress and anxiety.
D. All three other options.
1.6 Which one of Shneiderman’s classic guidelines for error messages is violated by the following computer
message: “The application Word Wonder has unexpectedly quit due to a type 2 error”? (2 marks)
A. Error messages should be precise rather than vague.
B. Error messages should avoid context-sensitive help.
C. Error messages should avoid friendly cute images.
D. Error messages should provide precise error code numbers.
1.7 The developers of a new e-reader want to find out how appealing such a device would be to undergraduate
students at Unisa. Which one of the following possible questions could be used in an unstructured interview to
understand the appeal of using e-readers to the target group? (2 marks)
A. Would you like to read your INF3720 textbook using an e-reader? Answer yes or no.
B. Do you like reading books on Google Scholar?
C. In what format do you prefer to read books, and why?
D. In your opinion, on a scale of 1 (very difficult) to 5 (very easy), are existing e-readers easy to handle?
Please turn over
OCT/NOV 2022
INF3720
Human-Computer Interaction
Date: October 2022
Duration: 2 hours
Total marks: 100
Examiners:
First: Dr B. Chipangura
Second: Prof M. van der Merwe
External: Dr. G. Toko
This is a closed book examination, under IRIS invigilation. Unisa exam policy applies.
Instructions to students
1. Answer all questions in the given order.
2. You are not allowed to use Mobile devices, Calculators or Oracle XE during this exam.
3. Students must upload their answer scripts in a single PDF file (answer scripts must not be
password protected or uploaded as “read-only” files.)
4. NO emailed scripts will be accepted.
5. Students are advised to review submissions (answer scripts) to ensure legibility and that the
correct answer script file has been uploaded.
6. Students are permitted to resubmit their answer scripts should their initial submission be
unsatisfactory.
7. Incorrect file format and uncollated answer scripts will not be considered.
8. Incorrect answer scripts and/or submissions made on unofficial examination platforms
(including the invigilator cellphone application) will not be marked and no opportunity will
be granted for resubmission.
9. Mark awarded for incomplete submission will be the student’s final mark. No opportunity
for resubmission will be granted.
10. Mark awarded for illegible scanned submission will be the student’s final mark. No
opportunity for resubmission will be granted.
11. Submissions will only be accepted from registered student accounts.
12. Students who have not utilised IRIS invigilation tool will be subjected to disciplinary
processes.
13. Students suspected of dishonest conduct during the examinations will be subjected to
disciplinary processes. UNISA has zero tolerance for plagiarism and/or any other forms of
academic dishonesty.
14. Students are provided 30 minutes to submit their answer scripts after the official
examination time. Submissions made after the official examination time will be rejected by
the examination regulations and will not be marked.
15. Students experiencing network or load shedding challenges are advised to apply together
with supporting evidence for an Aegrotat within 3 days of the examination session.
For students experiencing technical challenges, contact the SCSC 080 000 1870 or email
or refer to Get-Help for the list of additional contact numbers.
MEMO [Turn over]
Open Rubric
, INF3720
OCT/NOV
Question 20 Marks
Choose the most applicable answer and write it down on your answer sheet. For example, 1. A
1.1 The fact that the myUnisa website follows a standardised format and structure for all modules implies that
the following usability goal has been met: (2 marks)
A. Efficiency
B. Utility
C. Safety
D. Memorability
1.2 Assume that you have been contracted to do the interactive design for a local town’s electronic library
system. You have designed a non-functional collection of screens that demonstrate how a library user will
borrow a digital book. This activity is an example of: (2 marks)
A. Visceral design
B. Designing alternatives
C. Prototyping
D. Establishing requirements
1.3 Integrating interaction design with an agile software development approach is useful because (2 marks)
A. An agile approach incorporates tight iterations, feedback, and collaboration with the customer.
B. By using an agile approach, developers can start coding immediately to save time and costs.
C. An agile approach does not require that all critical design elements are captured in a design document.
D. An agile approach requires all software development processes to be specified before development
begins to ensure rigour.
1.4 Virtual shopping carts, baskets, shelves, checkouts, cash registers, payment options and alternative online
shopping techniques show: (2 marks)
A. How future scenarios (visions) enable users to interact with information in their everyday lives.
B. How conceptual models provide scenarios of how society can use future generations of imagined
technologies.
C. How theories help identify factors relevant to the design and evaluation of interactive products.
D. How seemingly similar tasks can have quite different conceptual models and metaphors underlying
their design.
1.5 People are inherently social. How have various digital technologies enabled us to overcome social
distance, even while physical distancing measures have been in place during the COVID-19 pandemic
lockdown? (2 marks)
A. Face-to-face meetings have been replaced to a large extent by online meetings using sound and video,
or sound only.
B. Much informal verbal communication has been replaced by texting and using emojis.
C. Creating, sending, and forwarding humoristic videos and sound clips have replaced the telling of jokes
to relieve stress and anxiety.
D. All three other options.
1.6 Which one of Shneiderman’s classic guidelines for error messages is violated by the following computer
message: “The application Word Wonder has unexpectedly quit due to a type 2 error”? (2 marks)
A. Error messages should be precise rather than vague.
B. Error messages should avoid context-sensitive help.
C. Error messages should avoid friendly cute images.
D. Error messages should provide precise error code numbers.
1.7 The developers of a new e-reader want to find out how appealing such a device would be to undergraduate
students at Unisa. Which one of the following possible questions could be used in an unstructured interview to
understand the appeal of using e-readers to the target group? (2 marks)
A. Would you like to read your INF3720 textbook using an e-reader? Answer yes or no.
B. Do you like reading books on Google Scholar?
C. In what format do you prefer to read books, and why?
D. In your opinion, on a scale of 1 (very difficult) to 5 (very easy), are existing e-readers easy to handle?
Please turn over
