Computer Studies Questions and Answers - Form 4 Mid-term Exams Term 1 2022

QUESTIONS

Instruction: Answer all questions in space provided. (30mks)

1. List three paragraph formatting activities in word processing (3 mks)
2.                
   1. Convert 91B₁₆ to octal (3mks)
   2. 9.625₁₀ to binary
3.                    
   1. State two applications areas of desktop publishing software. (2mks)
   2. Explain the following graphic terms
      • Rotate-
      • Crop
4. Name three types of optical disks (3 mks)
5. The diagram below shows four common network topologies A, B, C and D
   
   
   1. Name the network topologies labeled A, B, C and (4 marks)
      A
      B
      C
   2. Using six bits, find the two's complement of -2310. (4 marks)
6. Define the following web related terms:
   1. Web browser (2 mark)
   2. Hyperlink (2 mark)
   3. Hypertext document (2mark)
7. Give a reason for each of the following
   1. Changing a password regularly ( 1 mk)
   2. Typing and re- typing a new password when changing it ( 1 mk
8. Explain why input screens are better data entry designs than entering data directly to a table. (2 marks)

MARKING SCHEME

1. List three paragraph formatting activities in word processing (3 mks)
   1. alignment
   2. Tabs
   3. Indentation
   4. Outline level
   5. Line spacing
2.                        
   1. Convert 91B₁₆ to octal (3mks)
      • 91B₁₆ = 4433₈
   2. 9.625₁₀ to binary
      • 9.625₁₀ = 1001.101₂
3.                
   1. State two applications areas of desktop publishing software. (2mks)
      • Posters
      • Book publishing
      • Card design
   2. Explain the following graphic terms
      • Rotate- to turn an image through an angle (1mk)
      • Crop – to trim the edges of an angle (1mk)
4. Name three types of optical disks (3 mks)
   • CD- ROM
   • CD- RW
   • CD- R
   • CD – W
5. The diagram below shows four common network topologies A, B, C and D
   
   
   1. Name the network topologies labeled A, B, C and (4 marks)
      • A Tree/Hierarchy
      • B Ring
      • C Bus/Multi drop
   2. Using six bits, find the two's complement of -2310. (4 marks)
      • 23÷2=11R1
      • 11÷2=5R1 2310=010111₂
      • 5÷2=2R1 Twos compliment = 101000
      • 2÷2=1R0 + 1
      • 1÷2=0R1 101001₂
6. Define the following web related terms:
   1. Web browser (2 mark)
      • A browser is an application program that provides a way to look at and interact with all the information on the World Wide Web.
   2. Hyperlink (2 mark)
      • This is the clickable link in text or graphics on a Web page that takes you to another place on the same page, another page, or whole other site.
   3. Hypertext document (2mark)
      • A document usually web document (file) where the user interacts with the whole document using hyperlink
7. Give a reason for each of the following
   1. Changing a password regularly ( 1 mk)
   2. Typing and re- typing a new password when changing it ( 1 mk
8. Explain why input screens are better data entry designs than entering data directly to a table. (2 marks)
   • Most forms are bound to one or more tables and query in the database hence a user can design input fields linked to several tables/queries.
   • Forms are also appealing to the eye. They have GUI features unlike a table.