PHS CyberSchool

Computer Studies SG Grade 11 - 2000

Theory examination May 2000 - 90 minutes - 100 marks - Answers

Section A - 30 marks

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

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

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Question 2 - Matching columns - 10 marks

1. F
2. J
3. G
4. K
5. I
6. Q
7. L
8. E
9. O
10. C

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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. False - bps
8. False - anti virus
9. False - any colour except green
10. False - 8, 16 or 32 bit

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Section B

Question 4 - Computer architecture - 33 marks

1. 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]

2. 1. expansion slot
   2. transistor, semi conductor
   3. buses

   [3]

3. Large disk space
   Large amounts of RAM - 64 meg and above
   Good video card
   Fast processing speed
   

   [3]

4. • 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]

5. 1. BIOS
   2. normal primary memory
   3. data or instructions likely to be used by the processor
   4. store data in cache, cache memory
   5. nothing
   6. BIOS - system programs
   7. able to read and write to memory 10-15% faster, pipiline burst mode
   8. temporary storage of memory
   9. Dynamic RAM

   [9]

6. Study the following advertisement and answer the questions that follow:
   1. Intel, Celeron, Motorola
   2. 32 plus, 64
   3. megabyte
   4. 1.44
   5. Windows 98
   6. 3.2 GB
   7. modem
   8. You could not play a video on this computer. Needs DVD.
   9. add 3D accelerator card
   10. CD writer

   [10]

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Question 5 - Data communication - 17 marks

1. Netactive, Intekom, Icon, MWeb, Yebonet, Iafrica, Worldonline.

   [2]

2. 1. via an email attachment
   2. USE anti virus software, check email attachments

   [2]

3. viruses, hackers, pornography, time wasting

   [2]

4. net traffic, connection speed - speed of modem, access to international lines of ISP, processing speed of ISP's computers, processing speed of your own computer, use of own telephone lines, i.e. on windy day takes longer

   [3]

5. 1. quizzes
   2. HotDog, FrontPage, NetObjects Fusion
   3. Information Technology
   4. Not really. Mrs Buttle could be a Sales Executive as she has 25 years of IT experience in H/W and S/W. Nobody as enough experience as a web adminstrator. No one is a Wan specialist.

   [4]

6. 1. Microsoft
   2. Amazon.com
   3. Microsoft
   4. digital certificate

   [4]

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Section C

Question 6 - Presentation skills - 20 marks

1. proof reader, cutter, lithographer, stripper, layout artists, typesetter, graphic designer

   [4]

2. 1. htm or html
   2. gif
   3. bmp
   4. ppt
   5. pub
   6. doc

   [6]

   1. the address ended with za as the highest domain. za stands for South Africa, au is Australia [1]
   2. 1. iafrica, mweb, netactive, worldonline [1]
      2. aol [1]
   3. distribute and manage the email addresses at a site [1]
   4. used a search engine such as WEBCRAWLER, LYCOS or ANANZI and seached for PinelandS High School. She should have searched for Pineland (without the S). [1]
   5. http://www (I took www.wcape.school) [1]
   6. Netscape Navigator or Internet Explorer or Opera [1]
   7. right clicked on the image and 'Saved As' in her own folder, and then used by inserting it into her own work. [1]
   8. bitmap [1]
   9. chat, IRC [1]

[10]

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