PHS CyberSchool

Computer Studies SG Grade 12 via the Internet in 1999

Theory examination May 1999 - 90 minutes - 100 marks

Section A - 30 marks

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

1. The communication bus which is used to fetch the address of an instruction from memory is called the …
   1. Address bus
   2. Control bus
   3. Data bus
   4. Fetch bus

2. The following characteristics describe the … operating system.

   Limited primary store, only one process per time, character based interface.

   1. DOS
   2. Windows 3.1
   3. Windows 95
   4. Windows NT

3. Programs that control the operation of a computer are called …
   1. application software.
   2. hardware.
   3. secondary memory.
   4. system software.

4. In selecting the hardware to run a large microcomputer-based accountancy package, consideration should be given to …
   1. bus width, clock speed, disk size and maths coprocessor.
   2. bus width, ergonomically designed furniture, monitor resolution and RAM size.
   3. hard-disk capacity, maths coprocessor, RAM size and response speed.
   4. clock speed, hard disk capacity, response speed and ROM size.

5. Multitasking is an advantage of the … operating systems.
   1. DOS and Unix
   2. DOS and Windows 95
   3. Macintosh and DOS
   4. Windows 95 and Unix

6. A suitable computer application for an accountant to use to send memos to all the clients in his database:
   1. Database package
   2. Desktop publishing package
   3. Spreadsheet package
   4. Word processing package

7. An external modem is usually connected to a computer by a …
   1. bus line.
   2. internal clock.
   3. parallel port.
   4. serial port.

8. Conventional memory is a type of …
   1. micro-processor.
   2. read only memory (ROM).
   3. read-write memory (RAM).
   4. secondary memory.

9. Which of the following are true?
   1. Computers can be used in management information systems for projections.
   2. Computers can be used in medical science to diagnose disease.
   3. It is not a transgression to make a copy of your computer game for a friend as long as you do not sell it.
   4. The development of artificial intelligence assists the police to trace whether or not a suspect vehicle is stolen.
   1. 1, 2 and 4
   2. 1, 3 and 4
   3. 2, 3 and 4
   4. all

10. Which one of the following is not an operating system?
    1. Microsoft Office
    2. OS/2
    3. Unix
    4. Windows 95

/10/

Question 2 - Matching columns - 1 each - 10 marks

Column A

Column B

Access area on disk reserved for printer files Additional storage area in the CPU where data and instructions are saved temporarily Crystal quartz oscillator which controls the rate at which data is transferred from the disk to the central processing unit of the computer Option to change the screensaver in Windows 95 Part of a disk drive Running more than one process at a time Software that loads the operating system into memory Software used to compress the files on two disks so that they will fit onto one disk Structured collection of data which may be manipulated to select and sort desired items of information Temporary storage in primary memory used for input and output data

Bootstrap loader Buffer Control panel NOVELL Data clock Database Spreadsheet Multiprocessing PKZIP Register Spooler Track Windows Explorer

/10/

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

1. A bus is a set of wires that are capable of carrying data, instructions, addresses or control signals.
2. Windows 95 and NT and 98 and Unix support Plug and Play devices.
3. A vector image is a paint-type graphic, that is composed of a series of black and white or coloured pixels (little squares).
4. The main or primary memory of a PC is the hard disk because the PC stores information here first and cannot function without it.
5. The kernel is the central module of an operating system that is loaded into main memory when the machine starts up, and remains there during the entire time the operating system is loaded.
6. The colours red and green can be used next to each other in a presentation and be seen by colour-blind people.
7. Software is the physical components of a computer such as the CPU and VDU.
8. DOS does not support peer to peer network capabilities.
9. We usually scan a page from top left to bottom right and we see the left-hand page first as we open a spread.
10. FAT is the table used by the operating system to record the physical arrangement of files on a disk.

/10/

Section B - 50 marks

Question 4 - Computer architecture - 25 marks

1. The Pentium microprocessor has a 32-bit architecture. Explain how the speed of the computer is influenced by this architecture.

   [2]

2. Almost all personal computers are equipped with parallel and serial ports.
   1. What port would a printer be connected to?
   2. What port would a mouse be connected to?

   [2]

3. What is the function of SIMMS?

   [2]

4. List THREE architectural/physical features of a good desktop publishing computer.

   [3]

5. 1. Name the THREE most important buses that are used by the control unit.
   2. Give the function of each of the buses mentioned.

   [6]

6. Study the following advertisement and answer the questions that follow:

   300A ... processor
   ... MB RAM
   2MB Graphics Card
   ... MB stiffy drive
   3.2GB ...
   ... Colour Monitor
   104 Windows Keyboard
   Scroll Mouse + Pad
   40X CD-ROM Drive
   16 Bit 3D Sound Card
   108W Speakers
   Windows 98
   3 CD Education Pack
   2 Yr Warranty
   Cost: R5699
   

   1. Name a brand name of processor sold in 1999.
   2. How much RAM would you expect with this computer?
   3. What does MB mean or stand for?
   4. What is the normal capacity of a stiffy drive?
   5. What operating system is supplied with this computer?
   6. What size monitor would you expect to get?
   7. What is the capacity of the hard drive?
   8. If you want to use the Internet what would you further require?
   9. Could you play a video on this computer? If yes, why? If no, why not?
   10. If you wanted to play a computer game such as Quake, Incoming, Forsaken and/or Myst on this machine what would you improve or add?

   [10]

/25/

Question 5 - System software - 25 marks

1. Where is the boot program that performs the POST stored?

   [1]

2. When using the DOS operating system how many functions can run at once?

   [1]

3. When using Windows 95, Windows 98 or OS/2 how many programs can be in memory at once?

   [1]

4. Name FOUR types of information stored in the root directory.

   [4]

5. Name FOUR functions of an operating system

   [4]

6. To which operating environments do the following refer? -
   A (DOS) or B (Windows 95, 98, NT) environments
   1. Base memory
   2. Multitasking
   3. Multithreading
   4. Protected mode
   5. Real mode
   6. Uses buffers and spoolers
   7. Virtual memory available

   [7]

7. What hardware or software has the following function or aim?
   1. Records changes to the basic system configuration
   2. Keep records of the status of files
   3. Maintains the records pertaining to the information stored in mass storage
   4. Responsible for making I/O devices and the problem of their understanding and using different commands, transparent to both the user and programmer
   5. Stores information about each file on the disk
   6. Coordinates the assignment of peripheral devices within the computer system
   7. Ensures that communication between the device and the computer is successful

   [7]

   /25/

Section C - 20 marks

Question 6 - Presentation Skills Module - 20 marks

1. Choose the package / program that is the most suitable for each of the following tasks. Give a reason for your choice.

   Encarta (CD ROM)
   Excel
   Front Page
   Gif Construction Set
   Hotdog
   Inspiration
   KeyCAD
   Lotus 123
   Microsoft Publisher
   PaintShop Pro
   PASTEL
   Power Point
   Word 97
   

   1. Calculate term marks after learners have completed tests
   2. Convert bitmap pictures to GIF (Graphics Interchange Format) format
   3. Create animations for a web page
   4. Draw a concept map to show how components are linked
   5. Draw circuits for the Physical Science teacher
   6. Keep records of all the payments from learners to the school
   7. Obtain information about the history of the APPLE computer
   8. Produce graphs after experiments have been completed
   9. Produce plans of a house
   10. Produce the school's newspaper

   [10]

2. When giving a presentation many points need to be remembered. Match points from Column B with the points 2 to 5 in Column A. Each point may only be used once.

   Column A

   Column B

   Establish strong presence (Answers are Q, G, L and J) Opening Message Summary Question & Answer

   Clarify and reinforce message with each answer Connect with the audience Convey personal conviction Give 3-4 reinforcing points Hold until end of presentation Introduce the topic, benefit to the audience Maintain control, flow of presentation Make call to action Make handouts available Move around, get out from behind the props Restate main idea, central thought Smile, be enthusiastic State main idea, central thought State why it is important to the audience Stop talking, thank audience, end talk Summarise case for premise Wait for silence

[10]

/20/

/100/