Computer Studies Questions and Answers - Form 2 Term 2 Opener Exams 2022

QUESTIONS

1. Define the term scrolling (2mks)
2. Explain FOUR uses of an uninterruptible power supply unit. (4mks)
3. How can you open a document stored on a removable disk (3mks)
4. List four types of paragraph alignment (4mks)
5. Richard has a problem when typing; every time he wishes to type the word Good ,he mistakenly types God .What can he do to continue typing without worrying about having to go back to correct the same word over and over again. (6mks)
6. Match the computer generation with the technology used to make the processor (4mks)
   Generation     Technology
   Third               Thermionic valves
   First                Integrated circuits
   Fourth             Transistors
   Second           large-scale integration
7. Write CD-RW in full (1mk). Why are students recommended to use CD-RW when saving their work in KCSE exams? (3mks).
8. Suggest how computers may in future be made more users friendly for persons that are: (4mks)
   1. Blind –
   2. Without hands
9. When is the find and replace command used? (4mks)
10. Explain the importance of proofreading a document (6mks)
11. State three examples of input devices (3 marks)
12. State two examples of word processing programs (2mks)
13. A computer specification has the following details
    • Pentium II
    • 120 GB hdd
    • Full multimedia
    • 17” SVGA monitor
    • Pre-installed operating system
    • Pre- installed office suite
      
      1. What is meant by?
         1. 120 GB hdd (1mk)
         2. 17” SVGA monitors (1mk)
      2. Which operating system might be pre- installed in this computer and why? (2mks)
      3. List three multimedia components (3mks)
14. Write the following abbreviations in full (7 marks)
    • BIOS
    • CMOS
    • OMR
    • OCR
    • PC
    • RAM
    • ROM
15. Name and explain the function of the keyboard keys represented by the following symbols (6mks)
    
16.            
    1. What are peripheral devices? (2mks)
    2. Give two examples of peripheral devices (1mk)
17. What is meant by the term user – friendly as used in software development? (2mk)
18.        
    1. What are softcopy output devices (2mks)
    2. Give three reasons why LCD monitors are preferred to CRT monitors (3mks)
19. Explain how you can protect a document from unauthorized opening or altering. (6mks)

MARKING SCHEME

1. Define the term scrolling
   • To move text or graphics up or down or across a display screen as if by unrolling a scroll.
   • To progress, move, or be revealed as if by the unrolling of a scroll watch scenery scroll by large picture windows.
2. Explain FOUR uses of an uninterruptible power supply unit. (4mks)
   • Regulate the flow of power
   • Alerts the user incase of a black out
   • Prevents damage of computer components
   • Enable he user to save her work
3. How can you open a document stored on a removable disk (2mks)
   Insert the flash drive into a USB port on your computer. You should find a USB port on the front, back, or side of your computer (the location may vary depending on whether you have a desktop or a laptop). Depending on how your computer is set up, a dialog box may appear. If it does, select Open folder to view files.
4. List four types of paragraph alignment (4 mks)
   Right alignment
   Left alignment
   Center alignment
   Justification
5. Richard has a problem when typing; every time he wishes to type the word Good ,he mistakenly types God .What can he do to continue typing without worrying about having to go back to correct the same word over and over again.
6. Match the computer generation with the technology used to make the processor(4mks)
   Generation   Technology
   First              Thermionic valves
   Second         Transistors
   Third             Integrated circuits
   Fourth           large scale integrated circuits
7. Write CD-RW in full (1mk). Why are students recommended to use CD-RW when saving their work in KCSE exams, (2mks)
   A CD_RW can be erased and written again.
8. Suggest how computers may in future be made more users friendly for persons that are: (4 mks)
   1. Blind – computers that respond to touch and sound (voice)/Braille keyboard
   2. Without hands – computers that respond to voice
9. When is the find and replace command used?
10. Explain the importance of proofreading a document (6mks)
    To improve the quality of the paper,
    Ensuring there are no lingering mistakes,
    Correcting generalized discourse errors or writing inconsistencies.
11. state three examples of input devices (3 marks)
    • Pointing devices- mouse
    • Keying devices- keyboard
    • Scanning devices-scanners
      Voice recognition devices-microphone
12. State two examples of word processing programs (2mks)
13. A computer specification has the following details
    A computer specification has the following details:
    Pentium II
    120 GB hdd
    Full multimedia
    17” SVGA monitor
    Pre installed operating system
    Pre- installed office suite
    
    1. What is meant by:
       1. 120 GB hdd(1mk)
          The hard disk storage capacity is 120 gigabytes
       2. 17” SVGA monitors (1mk)
          Diagonal length (size) of the monitor is 17 inches and the motherboard has a super VGA graphics adapter. SVGA has a resolution of 800 x 600 pixels
    2. Which operating system might be pre- installed in this computer and why? (2mks)
       Win 7, win xp
    3. List three multimedia components (3mks)
       • CD Rom
       • Speaker
       • Microphones
       • Multimedia projectors
14. Write the following abbreviations in full (7 marks)
    
    • BIOS- basic input/output system
    • CMOS-complementary metal oxide semiconductor
    • OMR-optical mark recognition
    • OCR-optical character tecognition
    • PC- personal computer
    • RAM- random access memory
    • ROM – read only memory
15. Name and explain the function of the keyboard keys represented by the following symbols (6mks)
    1. Tab Key Used to remove text/ cursor to the right by a fixed or present number of spaces
    2. Enter / carriage Return key Used to initiate command on the screen i.e. Pressed after each command.
    3. Shift Key Used to change letter case Also used in conjunction with other keys for various Commands.
16.            
    1. What are peripheral devices? (2mks)
       Any device connected externally to the CPU
    2. Give two examples of peripheral devices (1mk)
       Mouse, Monitor, Keyboard, printer etc
17. What is meant by the term user – friendly as used in software development?(2mk)
    The user can easily operate the computer.
18.          
    1. What are softcopy output devices (2mks)
       Devices that produce output that can be seen or head but not tangible output
    2. Give Three reasons why are LCD monitors preferred to CRT monitors (3mks)
       • light
       • less eye strain
       • uses less power
19. Explain how you can protect a document from unauthorized opening or altering. (6mks
    Use the password protection feature in Microsoft Word and Excel to restrict an unauthorized user from opening or making changes
    1. Create or open the document you want to protect.
    2. On the file tab, click info option.
    3. On the info screen, click the protect document button then select encrypt with password option
    4. In the encrypt document dialog ,type in a password in the password