lOMoAR cPSD| 52021443
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, lOMoAR cPSD| 52021443
COS2621
1 Oct/Nov 2025
UNIVERSITY EXAMINATIONS
OCTOBER/NOVEMBER 2025
COS2621
Computer Organization and
Architecture
Exam date: 07 November 2025
11:45 am
Duration: 2 hours
Total marks: 80
Welcome to COS2621 exam.
This paper consists of 9 pages. Plus an appendix contains
a list of x86 Assembly Language instructions.
Instructions:.
1. Students must upload their answer scripts in a single
PDF file (answer scripts must not be password
protected or uploaded as “read only” files)
2. Incorrect file format and uncollated answer scripts will
not be considered.
3. NO emailed scripts will be accepted.
4. You may use a “scrap” paper to work on. I would
suggest that you write your student number, name, and
module code on the scrap paper. Show it to the IRIS
recording before the start of the exam, during and after
the exam. This will allow the actual person that will
review your recording to take note of your scrap paper
and what is written on it.
5. Students are advised to preview submissions (answer
scripts) to ensure legibility and that the correct answer
script file has been uploaded.
, lOMoAR cPSD| 52021443
COS2621
2 Oct/Nov 2025
6. Incorrect answer scripts and/or submissions made on
unofficial examinations platforms (including the
invigilator cell phone application) will not be marked
and no opportunity will be granted for resubmission.
7. Mark awarded for incomplete submission will be the
student’s final mark. No opportunity for resubmission
will be granted.
8. Mark awarded for illegible scanned submission will be
the student’s final mark. No opportunity for
resubmission will be granted.
9. Submissions will only be accepted from registered
student accounts.
10. Students who have not utilised invigilation or
proctoring tools will be subjected to disciplinary
processes (only include if applicable).
11. Students suspected of dishonest conduct during the
examinations will be subjected to disciplinary
processes. UNISA has a zero tolerance for plagiarism
and/or any other forms of academic dishonesty.
12. Students are provided one hour 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.
13. 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.
14. Students experiencing technical challenges, contact
the SCSC 080 000 1870 or email
or refer to URL link for
the list of additional contact numbers or
15. alternatively email your module lecturer. ONLY
communication from your myLIfe account will be
considered.
messages.downloaded_by
messages.downloaded_by
,
, lOMoAR cPSD| 52021443
COS2621
1 Oct/Nov 2025
UNIVERSITY EXAMINATIONS
OCTOBER/NOVEMBER 2025
COS2621
Computer Organization and
Architecture
Exam date: 07 November 2025
11:45 am
Duration: 2 hours
Total marks: 80
Welcome to COS2621 exam.
This paper consists of 9 pages. Plus an appendix contains
a list of x86 Assembly Language instructions.
Instructions:.
1. Students must upload their answer scripts in a single
PDF file (answer scripts must not be password
protected or uploaded as “read only” files)
2. Incorrect file format and uncollated answer scripts will
not be considered.
3. NO emailed scripts will be accepted.
4. You may use a “scrap” paper to work on. I would
suggest that you write your student number, name, and
module code on the scrap paper. Show it to the IRIS
recording before the start of the exam, during and after
the exam. This will allow the actual person that will
review your recording to take note of your scrap paper
and what is written on it.
5. Students are advised to preview submissions (answer
scripts) to ensure legibility and that the correct answer
script file has been uploaded.
, lOMoAR cPSD| 52021443
COS2621
2 Oct/Nov 2025
6. Incorrect answer scripts and/or submissions made on
unofficial examinations platforms (including the
invigilator cell phone application) will not be marked
and no opportunity will be granted for resubmission.
7. Mark awarded for incomplete submission will be the
student’s final mark. No opportunity for resubmission
will be granted.
8. Mark awarded for illegible scanned submission will be
the student’s final mark. No opportunity for
resubmission will be granted.
9. Submissions will only be accepted from registered
student accounts.
10. Students who have not utilised invigilation or
proctoring tools will be subjected to disciplinary
processes (only include if applicable).
11. Students suspected of dishonest conduct during the
examinations will be subjected to disciplinary
processes. UNISA has a zero tolerance for plagiarism
and/or any other forms of academic dishonesty.
12. Students are provided one hour 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.
13. 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.
14. Students experiencing technical challenges, contact
the SCSC 080 000 1870 or email
or refer to URL link for
the list of additional contact numbers or
15. alternatively email your module lecturer. ONLY
communication from your myLIfe account will be
considered.
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