# 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)
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.
• 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.

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