(a) Define algorithm. (b) State three characteristics of an algorithm. (c) Write an algorithm for finding the average of numbers, when the sum of the numbers is given.
(a) List the two main constituents of a computer (b) State four characteristics of a computer.
(c) In a tabular form, categorize each of the following statements into either data or information: (i) It is no significant alone by itself; (ii) It is significant by itself
(iii) It is obtained through observations and recordings (iv) It is obtained through analysis.
(a) Define the term system development cycle. (b) List four stages involved in system development cycle (c) State four qualities of a good program.
(a) What is a computer file?
(b) State two features each of: (i) transaction file (ii) reference file.
(c) List two: (i) effects of file insecurity (ii) methods of securing files.
(a) Define the term operating system. (b) State two functions of an operating system. (c) List two types of: (i) application software (ii) translators
(d) You were asked as a school prefect to compile the personal data of final year students in your school. State two software that could be used to perform the task.
The number of cells that contain numeric data in the table above is?
- A. 4
- B. 8.
- C. 9.
- D. 12.
Use the MS-Excel below to answer this question.
| A | B | C | D | |
| 1 | BOOKS | SUPPLIED | TO SENIOR | HIGH SCHOOL |
| 2 | FORMS | MATHS | ICT | ENGLISH LANGUAGE |
| 3 | SHSI | 2456 | 6580 | 5678 |
| 4 | SHSII | 3450 | 4009 | 4400 |
| 5 | SHSIII | 8765 | 4500 | 9000 |
The number of cells that contain data in row 1 is?
- A. 1.
- B. 3.
- C. 4.
- D. 5.
Use the MS-Excel table below to answer questions 48 to 50.
| A | B | C | D | |
| 1 | BOOKS SUPPLIED TO SENIOR HIGH SCHOOL | |||
| 2 | FORM | MATHS | ICT | ENGLISH LANG |
| 3 | SHS I | 2456 | 6580 | 5678 |
| 4 | SHS II | 3450 | 4009 | 4400 |
| 5 | SHS III | 8765 | 4500 | 9000 |
The content of cell D3 is?
- A. 3450.
- B. 4400.
- C. 4500.
- D. 5678.
9\(_{10}\) is equivalent to X\(_8\), where X is?
- A. 7.
- B. 10.
- C. 11.
- D. 12.
The conversion of 11001\(_2\), to base ten equals?
- A. 20.
- B. 25.
- C. 28.
- D. 30
In hexadecimal number system, B, D and F represent which of the following decimal numbers?
- A. 11, 13 and 15 respectively.
- B. 12, 14 and 15 respectively.
- C. 13, 14 and 15 respectively.
- D. 14, 16 and 17 respectively
Which of the following statements is true of free software? It
- A. can be borrowed freely.
- B. is a low-cost software:
- C. is a free unlicensed software.
- D. is a licensed software with permission to copy freely.
Which of the following is the main advantage of intellectual property right?
- A. Discouragement of sharing.
- B. Discovery of brilliant persons.
- C. Encouragement of innovations.
- D. maximization of profit.
Computer ethics are important because they?
- A. ensure identity theft.
- B. regulate the privacy of messages only.
- C. address piracy and comportment issues.
- D. prevent copyright infringement on discretional basis.
Which of the following statements is true of encryption? It
- A. provides complete privacy.
- B. provides security of varying reliability.
- C. makes messages un- readable by the recipient.
- D. permits an individual to have access to another person's message.
A high level language can be converted to a machine language using?
- A. a compiler.
- B. an editor.
- C. a utility program.
- D. an operating system
The part of the computer that holds the data and pro- grams for CPU processing is the?
- A. Address.
- B. Register:
- C. Random Access Memory.
- D. Read Only Memory
The term bus’ width in data transfer refers to the?
- A. number of wires in the bus.
- B. size of the data movement.
- C. number of bits of information the RAM can send to the CPU at the same time.
- D. number of wires in the bus that carry information to the processor at a time
The shortcut command used in restarting a computer is?
- A. Ctrl+ S.
- B. Ctrl+0.
- C. Del+Alt+S.
- D. Alt+Ctrl+Del.
Data loss in a computer cannot be prevented by the use of?
- A. antivirus.
- B. backup.
- C. flash drive.
- D. password.
The computer keyboard key(s) that a user presses to move to the beginning of a current line of text is/are the?
- A. Enter key.
- B. Home key.
- C. Ctrl +B keys.
- D. Ctrl+ Home keys.