Elective ICT Pasco 2020 Subjective
PAPER 2
WASSCE 2020 ELECTIVE ICT ESSAY QUESTIONS
[30 marks]
Answer three questions only. All questions carry equal marks.
1. (a) What is octal number system? [2 marks]
(b) Convert the following octal numbers into binary:
i. 71
ii. 37 [4 marks]
(c) Convert the following decimal numbers into octal:
i. 924
ii. 379 [4 marks]
2. (a) Explain the term computer assisted learning. [4 marks]
(b) State three features of computer assisted learning [6 marks]
3. (a) (i) What is universal serial bus?
(ii) State two benefits of using universal serial bus connection between a computer and another device. [4 marks]
(b) In Table 1, three storage devices have been described. Use it to answer questions (i) and (ii) below.
Check Also: Elective ICT Pasco 2020 Objectives
Table 1
| 1 | 2 | 3 | 4 | 5 |
| Description of Storage Devices | Name of Storage Devices | Categories of Storage Device | ||
| Primary | Secondary | Offline | ||
| Magnetic storage medium which is composed of a thin flexible disk scaled in a square plastic carrier | ||||
| Optical media which uses one spiral track, red lasers are used to read and write data on the media surface, makes use of dual-layering technology to increase the storage capacity to over 1GB | ||||
| Non-volatile memory chip; contents of the chip cannot be altered. It is often used to store start-up routines in a computer (e.g., BIOS) | ||||
(i) In column 2, name the storage devices being described in column 1.
(ii) Show the category of storage device being described in column 1 by ticking in any of the columns 3, 4, 5. [6 marks]
| Field | FirstName | SecondName | DateofBirth | Sex | Height | Weight |
| Table | Students | |||||
| Sort | ||||||
| Criteria | ||||||
| OR |
| Field | FirstName | SecondName | DateofBirth | Sex | Height | Weight |
| Table | Students | Students | ||||
| Sort | ||||||
| Criteria | >1.2 | |||||
| OR | <10 |
| Field | StudentID | English | Mathematics | Physics | Chemistry | Biology |
| Table | Exams | Exams | Exams | Exams | Exams | Exams |
| Sort | ||||||
| Criteria | 40 | |||||
| OR |
| Field | StudentID | English | Mathematics | Physics |
| Table | ||||
| Sort | ||||
| Criteria | 30 | 55 | ||
| OR |
Write SQL statements to interpret the query by example in:
(a) Table 2;
(b) Table 3;
(c) Table 4;
(d) Table 5; [10 marks]
5) Draw a flowchart to compute N factorial, where N factorial is represented by the formula:
N!=N(N-1)(N-2)(N-3)(N-4)…1 [10 marks]
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