PHS CyberSchool

Computer Studies SG Grade 11 via the Internet in 1999

Theory examination - Answers

Section A - 30 marks

Question 1 - Multiple-choice questions - 1 mark each - 10 marks

1. C
2. C
3. C
4. A
5. B
6. C
7. B
8. A
9. D
10. B

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Question 2 - Matching columns - 10 marks

1. G
2. K
3. H
4. L
5. J
6. R
7. M
8. F
9. P
10. D

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Question 3 - True or False - 1 mark each - 10 marks

1. True
2. False - Modem
3. False - Illegal
4. False - Right
5. False - Thickest
6. False - Hardware
7. True
8. False - Antivirus
9. False - Anything other than green
10. False - 8 or 4 or 1 or 15 or 16

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Section B

Question 4 - Computer architecture - 20 marks

1. • Data bus - is the way data and program instructions travel to the CPU. The CPU also sends results back tot he memory after execution. The data bus therefore transfers data in both directions between the CPU and memory
   • Address bus - when the CPU needs data or instructions from the memory, it has to tell the memory where the data/instruction must come from. This location is called the address of the data/instruction. The address bus carries this address. It transmits in one direction - from the CPU to the memory.
   • Control bus - carries control signals, the signals that tell memory if the CPU wants to read or write memory.

   [6]

2. The number of registers that a CPU has and the size of each help determine the power an speed of a CPU. A 32-bit CPU is one in which each register is 32 bits wide. Therefore each CPU instruction can manipulate 32 bits of data.

   [2]

3. 1. BIOS
   2. normal primary memory
   3. data or instructions likely to be used by the processor
   4. store data in cache
   5. nothing
   6. BIOS - system programs
   7. What is the advantage of using the EDO DRAM chip?
   8. What is the main reason for the utilization of cache memory?
   9. Which, Dynamic RAM or Static RAM, must be refreshed by the processor in order to retain the content?

   [9]

4. Motherboard - printed circuit board that contains the main components of a microcomputer.

   1. If you had an internal modem, into which part of the motherboard would you slot the card in?
   2. Name the common type of switch found on a motherboard.
   3. On the motherboard you maybe able to see thin traces or wires. What are these thin lines called?

   [3]

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Question 5 - Data communication - 20 marks

The Internet is a vast international network of networks where people linked to computer systems can communicate.
1. State TWO advantages and TWO disadvantages of being connected to the Internet.

   [4]

2. Name FOUR essential components for connecting to the Internet. (Include hardware and software in your list.)

   [4]

3. Explain in detail THREE factors that influence the speed of access to the Internet.

   [3]

4. Name FOUR South African ISP's.

   [4]

5. You have received email from a number of people. How do you know from which country they come? Explain with examples.

   [4]

6. Give ONE example of synchronous communication done via the Internet.

   [1]

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Question 6 - Computers in society - 20 marks

1. The Melissa and Happy99 viruses attacked PCs in 1999.
   1. How did the Melissa and Happy99 viruses get to individual PCs?
   2. What must a user do to prevent their computer being affected by such viruses?

   [2]

2. You have had a request from a friend:

   'Please copy the desktop publishing package at school for me as I need to make a newsletter for a project.'

   Discuss the above with regard to the law, employment and finance.

   [3]

3. In the newspaper Computer Week April 12 1999 the following advertisements appear. Answer the following questions based on the advertisements.
   • Sales Exec ... 2-5yrs IT sales exp. H/W & S/W. Training provided R200K neg.
   • Web Admin ... 5yrs HTML/CGI/JavaScript/Unix/networking securities exp R150K
   • Wan Spec ... IT co listed on JSE. MCNE, CNE pref. 2yrs exp. NT and hardware R20K neg.

   
   

   1. Which position is in the sales field?
   2. Which position requires knowledge of Windows NT?
   3. Which position requires networking qualifications?
   4. One of the positions requires knowledge of JavaScript. Where can JavaScript be seen or experienced in the Pinelands CyberSchool environment?
   5. What software application taught at Pinelands CyberSchool uses HTML coding?
   6. Two of the positions refer to IT. What does IT refer to?
   7. One person on the staff at Pinelands High School has the qualifications and/or experience to apply for one of these positions. Who is that person? Indicate your choice of position and give a reason for your choice.

   [7]

4. How can a computer hacker do more damage than an office burglar?

   [3]

5. The computer industry is currently engaged in addressing the 'Year 2000' problem. The solution to the problem will be very costly and take up a lot of time. Explain what is the problem?

   [2]

6. There are a number of people who have changed and are changing the world with their computer developments.
   1. Which company did Bill Gates help create and now run?
   2. Which computer company do you connect with the names John Sculley and Steve Jobs?
   3. Which South African cabinet minister or his department is trying to get all South Africa connected to the Internet and / or a telephone?

   [3]

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Section C

Question 7 - Presentation skills - 10 marks

1. Of a word processor and a desktop publishing package which would have the most use for the following?
   1. Guides to position text
   2. Mouse

   [2]

2. List TWO architectural/physical features of a good desktop publishing computer.

   [2]

3. What are the extensions of the following applications or packages?
   1. A web page
   2. Animation made with Gif Construction Set
   3. Picture drawn with Paint or Paintbrush
   4. Powerpoint
   5. Publisher
   6. Word

   [6]

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