PHS CyberSchool

Computer Studies SG Grade 12 via the Internet in 1999

Theory examination - Answers

Section A - 30 marks

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

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

/10/

Question 2 - Matching columns - 1 each - 10 marks

1. K
2. J
3. E
4. C or M
5. L
6. H
7. A
8. I
9. F
10. B

/10/

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

1. True
2. True
3. False - bitmap
4. False - RAM
5. True
6. False - Any colour except Red
7. False - Hardware
8. True
9. False - Right
10. True

/10/

Section B - 50 marks

Question 4 - Computer architecture - 25 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. Parallel
   2. Serial

   [2]

3. SIMMS are Single In-line Memory Module. Can come in 30-and 72-pin formats. SIMM sockets allow SIMM boards to be inserted or removed quickly. Enables one to upgrade memory.

   [2]

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

   [3]

5. • 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]

6. 1. Intel, Celeron, Motorola
   2. 32 plus, 64
   3. megabyte
   4. 1.44
   5. Windows 98
   6. 14 Inch plus
   7. 3.2 GB
   8. modem
   9. You could not play a video on this computer. Needs DVD.
   10. add 3D accelerator card

   [10]

/25/

Question 5 - System software - 25 marks

1. In the ROM BIOS or boot strap loader

   [1]

2. one

   [1]

3. more than one

   [1]

4. File name
   Extension
   Attributes
   Time
   Data
   File size
   Starting FAT
   

   [4]

5. Manage processes executed by the CPU, memory allocation, device I/O and file input and output.

   [4]

6. 1. A
   2. B
   3. B
   4. B
   5. A
   6. B
   7. B

   [7]

7. 1. CMOS
   2. FAT
   3. root directory, file manager
   4. operating system
   5. root directory, FAT
   6. resource allocator, operating system
   7. command processor, driver

   [7]

   /25/

Section C - 20 marks

Question 6 - Presentation Skills Module - 20 marks

1. 1. Excel, Lotus 123
   2. PaintSho Pro
   3. Gif Construction Set
   4. Inspiration
   5. KeyCad, Word 97
   6. Pastel
   7. Encarta
   8. Excel, Word 97, Lotus 123
   9. KeyCAd
   10. MSPublisher

[10]

2. 1. Q, G, L and J
   2. B, F
   3. M, D, C
   4. K, P, N, H, O
   5. E, A, I

[10]

/20/

/100/