Computer Concepts

21 Grade 7 Pre-Technical Studies questions on Computer Concepts, with worked marking schemes. 21 questions are available on this topic in full.

1. Question 1

   1 mark

   A teacher explains that some software runs the computer itself while other software helps users do tasks. Which one is an example of system software?

   A. A word processor for typing letters

   B. An operating system such as Windows

   C. A spreadsheet for keeping accounts

   D. A web browser for viewing websites

   (1 mark)

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2. Question 2

   1 mark

   Which one of the following is an example of an output device?

   A. Scanner

   B. Mouse

   C. Printer

   D. Microphone

   (1 mark)

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3. Question 3

   6 marks

   Explain three reasons why computers have become important tools in a modern Kenyan school.

   (6 marks)

   Marking scheme

   Any three explained (2 marks each): Speed - they process work faster than humans e.g. calculating results; Storage - they store large amounts of records/data in small space; Accuracy - they give correct results reducing errors; Communication - allow email/internet access for learning; Research - enable access to learning resources online. Award 1 for point + 1 for explanation. Total 6 marks.

4. Question 4

   1 mark

   A learner switches on a computer and the desktop appears, allowing her to open programs. The program that manages the computer's resources and enables this is the:

   A. Word processor

   B. Web browser

   C. Antivirus

   D. Operating system

   (1 mark)

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5. Question 5

   1 mark

   Mwangi wants to type a school assignment, save it and print it later. Which category of computer parts will he MOST directly touch to give input?

   A. Firmware

   B. Hardware

   C. Software

   D. Malware

   (1 mark)

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6. Question 6

   1 mark

   A learner in the computer lab is explaining how a computer works to a friend. Which statement correctly describes what a computer does with data?

   A. It only stores data but cannot change it in any way

   B. It receives input, processes it, and produces output

   C. It produces output without ever receiving any input

   D. It deletes all data immediately after it is entered

   (1 mark)

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7. Question 7

   1 mark

   A learner is asked to explain to a classmate what a computer actually is. Which description is the most accurate?

   A. A machine that only plays games and music

   B. An electronic device that accepts data, processes it and gives information

   C. A box that stores books and pictures only

   D. A device that works without any instructions

   (1 mark)

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8. Question 8

   1 mark

   Which of the following is classified as application software?

   A. The operating system that boots the computer

   B. A device driver for the printer

   C. The utility that scans the hard disk

   D. A word processing program used to type letters

   (1 mark)

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9. Question 9

   4 marks

   A learner claims that RAM keeps data permanently.

   (a) State whether this is true or false.

   (b) Give a reason for your answer.

   (c) Name the type of memory that keeps startup instructions permanently.

   (4 marks)

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10. Question 10

    1 mark

    Which device is used to enter printed text and pictures from paper into the computer as a digital image?

    A. Printer

    B. Speaker

    C. Projector

    D. Scanner

    (1 mark)

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11. Question 11

    6 marks

    A Grade 7 learner at a cyber cafe is told that a computer follows the IPO cycle when working.

    (a)(i) State what the letters IPO stand for. (3 marks)

    (a)(ii) Give one example of an activity that takes place at the processing stage. (1 mark)

    (b) State two characteristics that make a computer useful for handling school records. (2 marks)

    (6 marks)

    Marking scheme

    (a)(i) I = Input, P = Processing, O = Output. (3 marks) (a)(ii) Processing example (any one): calculating the total marks of a learner; sorting names in alphabetical order; comparing two values. (1 mark) (b) Characteristics (any two): speed (works very fast); accuracy (gives correct results when given correct data); large storage capacity; diligence (works for long without getting tired); versatility (can do many different tasks). (2 marks)

12. Question 12

    1 mark

    A computer is best described as an electronic device that processes data into information. Which one of the following BEST describes 'data' as used in computing?

    A. A set of instructions given to the computer

    B. A finished report ready for decision making

    C. The physical parts of the computer

    D. Raw facts and figures that have not been processed

    (1 mark)

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13. Question 13

    4 marks

    State four safety measures a learner should observe when working in the computer laboratory.

    (4 marks)

    Marking scheme

    Any four (1 mark each): Do not eat/drink near the computers; keep the room clean and dust-free; do not touch bare/exposed electrical cables; avoid overloading power sockets; report faulty equipment to the teacher; sit properly to avoid strain; keep water/liquids away. Total 4 marks.

14. Question 14

    1 mark

    When using a computer for long hours in the lab, which practice BEST protects a learner's health and safety?

    A. Sitting upright and taking regular breaks to rest the eyes

    B. Blocking the ventilation openings with books

    C. Pulling out cables while the machine is on

    D. Placing drinks on top of the system unit

    (1 mark)

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15. Question 15

    1 mark

    A learner saves a document but wants it to remain even after the computer is switched off. The document must be stored in:

    A. Random Access Memory (RAM)

    B. Secondary storage such as a hard disk

    C. The screen display

    D. The processor cache

    (1 mark)

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16. Question 16

    1 mark

    Which one of the following is NOT a function performed by a computer during information processing?

    A. Producing output

    B. Accepting input

    C. Feeling emotions about the data

    D. Processing data

    (1 mark)

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17. Question 17

    6 marks

    Amina has just received a new computer at home and her uncle tells her that a computer works by following the input-process-output cycle.

    (a) Define the term 'computer'. (2 marks)

    (b) Using one example each, describe the input stage and the output stage of the information processing cycle. (4 marks)

    (6 marks)

    Marking scheme

    (a) A computer is an electronic device that accepts data (input), processes it according to a set of instructions, stores it, and produces information (output). (2 marks) (b) Input stage (2 marks): This is the stage where raw data and instructions are entered into the computer using an input device. Example: typing text using a keyboard or clicking using a mouse. Output stage (2 marks): This is the stage where the processed data (information) is presented to the user through an output device. Example: displaying results on a monitor or printing on paper using a printer.

18. Question 18

    1 mark

    A learner explains that for a computer to work it needs both physical parts and the programs that run on them. The programs and instructions are correctly known as what?

    A. Hardware

    B. Software

    C. Hard disk

    D. Hard copy

    (1 mark)

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19. Question 19

    6 marks

    Study the following list of computer parts: keyboard, monitor, mouse, printer, speaker.

    (a) Classify each part as either an INPUT or OUTPUT device.

    (b) State the main function of the monitor.

    (6 marks)

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20. Question 20

    4 marks

    Distinguish between hardware and software as used in computing, giving one example of each.

    (4 marks)

    Marking scheme

    Hardware: the physical/tangible parts of a computer that can be touched (1) e.g. keyboard/monitor/CPU (1). Software: the programs or sets of instructions that tell the computer what to do; not physically touchable (1) e.g. word processor/operating system (1). Total 4 marks.

21. Question 21

    1 mark

    During a lesson, the teacher points at the part of the computer described as 'the brain that carries out instructions and calculations'. Which part is this?

    A. Keyboard

    B. Monitor

    C. Central Processing Unit (CPU)

    D. Speaker

    (1 mark)

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