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COS1521 EXAM PACK 2022
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COS1521EXAM PACK
+27 81 278 3372
,This paper consists of 28 pages and the instructions for the completion of a mark-reading sheet.
Please complete the attendance register on the back page, tear it off and hand it to the invigilator.
Instructions:
1. All the questions in this paper are multiple-choice.
2. There are 80 questions in total. Your total mark out of 80 will be converted to a final exam mark out of 100.
3. Answer all the questions. There is also space for rough work.
4. Using a pencil, answer all the questions on the mark-reading sheet.
5. Remember to fill in the unique number (see top of page) on the mark-reading sheet.
6. You are not allowed to use a calculator.
EVERYTHING OF THE BEST!
[TURN OVER]
, 2 COS1521/RCO1521
May/June 2017
This paper consists of 80 multiple-choice questions.
Each question is worth 1 mark.
Your total out of 80 will be converted to give a final exam mark out of 100.
Mark only one alternative per question with a pencil on the mark-reading sheet.
(Remember to fill in the unique number.)
Section A: Computer background, number systems, data storage, operations on
data and logic (27 marks)
QUESTION 1
Which one of the following scientists was not involved in the development of electronic computers in
1930-1950?
1. John Atanasoff
2. Alan Turing
3. Konrad Zuse
4. Blaise Pascal
QUESTION 2
During which computer generation were the higher level languages COBOL and FORTRAN invented?
1. Second generation
2. Third generation
3. Fourth generation
4. Fifth generation
QUESTION 3
Convert the octal number (602)8 to a decimal number.
1. (96)10
2. (386)10
3. (387)10
4. (394)10
[TURN OVER]
, 3 COS1521/RCO1521
May/June 2017
QUESTION 4
Convert the hexadecimal number (DFE)16 to an octal number.
1. (6376)8
2. (6476)8
3. (6736)8
4. (6746)8
QUESTION 5
Convert the decimal number (14.125)10 to a binary number.
1. (1110.1)2
2. (1110.111)2
3. (1110.001)2
4. (1110.1011)2
QUESTION 6
Which one of the following number representations is invalid?
1. (263)8
2. (812)8
3. (1011)2
4. (FFF)16
Rough work:
[TURN OVER]
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