THE UNITED REPUBLIC OF TANZANIA , PRIME MINISTER'S OFFICE– REGIONAL ADMINISTRATION AND LOCAL GOVERNMENT

COMPUTER SCIENCE – FORM ONE

ANNUAL EXAMINATION – NOVEMBER

TIME: 2:30 HOURS

INSTRUCTIONS

1. This paper consists of Sections A, B, and C with a total of ten (10) questions.
2. Answer all questions.
3. Use blue or black ink for writing. Use pencil for drawings.
4. Cellular phones and unauthorized materials are not allowed in the examination room.
5. Section A and C each carry 15 marks. Section B carries 70 marks.

SECTION A: MULTIPLE CHOICE AND MATCHING ITEMS (15 MARKS)

1. Choose the correct answer and write its letter in the space provided (i–x):

(i) The term "Computer Science" is best defined as:

1. The study of plants and animals
2. The study of computers and their applications
3. The study of space and stars
4. The study of economic systems

(ii) Which of the following is an example of computer hardware?

1. Microsoft Word

2. Printer
3. Antivirus
4. Spreadsheet

(iii) The brain of the computer which processes data is called:

1. Monitor
2. CPU
3. Keyboard
4. Scanner

(iv) Which of the following is notan input device?

1. Mouse
2. Scanner
3. Printer
4. Keyboard

(v) Which type of software controls all hardware operations in a computer?

1. Utility Software
2. Application Software
3. Operating System
4. Programming Software

(vi) The term "troubleshooting" refers to:

1. Writing a computer program
2. Fixing computer problems
3. Assembling computer parts
4. Playing computer games

(vii) Which of the following is the correct order of information processing in a computer system?

1. Output → Input → Processing → Storage
2. Processing → Input → Output → Storage
3. Input → Processing → Output → Storage
4. Storage → Output → Input → Processing

viii. Preventive maintenance of a computer includes:

1. Ignoring dust
2. Frequent backups
3. Leaving food particles on the keyboard
4. Switching off abruptly

(ix) Which of the following best describes a computer system?

1. Only hardware components
2. Only software programs
3. Hardware, software, and users working together
4. Power supply and electricity

(x) Which of the following is a principle of Computer Science?

1. Guessing solutions to problems
2. Following algorithms and logical steps
3. Ignoring computer ethics
4. Bypassing troubleshooting procedures

2. Match the items in Column A with the correct responses in Column B:

SECTION B: STRUCTURED QUESTIONS (70 MARKS)

3.(a) Define Computer Science. (2 marks)

(b) Mention any two (2) branches of Computer Science. (4 marks)

(c) State four (4) reasons why Computer Science is important in daily life. (4 marks)

4.(a) What is a computer system? (3 marks)

(b) Name the four (4) basic components of a computer system and give one function of each. (7 marks)

5.(a) State three (3) differences between hardware and software. (6 marks)

(b) Give two (2) examples of application software and two (2) examples of system software. (4 marks)

6.(a) Define troubleshooting. (3 marks)

(b)Outline four (4) common computer problems that require troubleshooting. (7 marks)

7.(a) List and explain three (3) preventive maintenance practices for a computer system. (6 marks)

(b)Draw a neat and well-labeled diagram of a computer system showing main components. (4 marks)

8.(a) Define an algorithm. (3 marks)

(b) Describe four (4) characteristics of a good algorithm. (7 marks)

SECTION C: ESSAY QUESTIONS (15 MARKS)

9. Explain the importance of proper maintenance and troubleshooting of computer systems in schools and offices.

10. Discuss the basic principles of Computer Science and explain how they are applied in problem solving and programming.