PHS CyberSchool

Computer Studies SG Grade 11 via the Internet in 1999

Theory examination November 1999 - 90 minutes - 100 marks

Section A - Answer all the questions in this section - 30 marks

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

1. In a certain business, when invoices and receipts are printed, the duplicates are printed simultaneously. The original copy is given to the client and the company files the duplicate. What type of printer is recommended for this task?
   1. Dotmatrix
   2. Inkjet
   3. Laser
   4. Thermal

2. Based on information in the address below in which country does this person live? - Another@onwe.pop.co.za
   1. Saudi Arabia
   2. South Africa
   3. Zambia
   4. Cannot tell

3. Clock speed is measured in …
   1. Bps.
   2. Mb.
   3. MHz.
   4. RAM.

4. Which of the following is not an example of an operating system?
   1. MS DOS
   2. MS Works
   3. OS/2
   4. Windows 98

5. In order to use telephone lines to carry data transmissions, a hardware device that will convert digital signals to analogue signals is required. This device is called a(n) …
   1. encryptor.
   2. interface.
   3. modem.
   4. translator.

6. Which of the following authorization systems are currently used at ATMs in South Africa?
   1. Biometrics - identification by retina or voice or finger prints
   2. Magnetic strip on a plastic card
   3. Password or identification number
   4. Signature
   1. i+ ii
   2. i + ii + iii
   3. ii + iii
   4. i + ii + iii + iv

7. Which of the following characteristics of an operating system will be sufficient if it is required that a numbers of users, interactively, via terminals, simultaneously need access to a program on a central server?
   1. Multi-access
   2. Multiprogramming (also called multi-tasking)
   3. Remote job entry
   4. Timesharing

8. A disadvantage of satellite transmission is …
   1. bad weather can influence transmission.
   2. it is slower than other transmission media.
   3. it uses coaxial cable.
   4. it works on the line-of-sight principle.

9. Which of the following physical or architectural features will enhance a good desktop publishing computer?
   1. CD-ROM drive, colour printer, 1.44 Mb disk drive
   2. desktop publishing software application, keyboard, mouse
   3. fast processor, large amounts of RAM, large storage capacity
   4. large monitor, clipart, scanner

10. BSA (Business Software Alliance) is a South African firm concerned with …
    1. e-commerce.
    2. unauthorized use of software applications.
    3. virus software.
    4. Year 2000 (Y2K) computer issues.

/10/

Question 2 - Matching columns - 1 mark each - 10 marks

Column A

Column B

Ability to understand and use information in multiple formats from a wide range of sources when it is presented via computer Compact disk with a capacity of 4.7 Gb on which a full-length film can be stored In local area networks, a device that enables networks with identical architectures, to exchange data In the early years of computers it required a separate utility program but now it is part of modern operating systems International computer network used by travel agents Program which ensures that communication between the computer and the device is successful Rules and procedures to govern the way data are transmitted between any two devices in a computer network Rules of polite behaviour that you keep to when using the Internet Study of the relationship between people and furniture, tools, and machinery they use at work System whereby your hardware, BIOS and operating system work together to identify the resources in your system and configure them automatically

Amadeus and Galileo Amazon Attenuation Bridge CD-ROM Defragmentation Digital literacy Driver DVD-ROM Ergonomics File allocation table (FAT) Hard drive Learner Netiquette Plug and Play Protocol Router Windows 3.1

/10/

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

1. A gateway is a device that can interpret and translate the different communication rules (protocols) that are used on two different networks so that communication can occur.
2. System analysts deal with breakdowns in computers and related equipment. They have usually qualified at a technikon and / or have an A+ certificate.
3. Artificial Intelligence has been a goal of scientists for more than 80 years. In 1997 the IBM computer Deep Blue beat the chess champion Gary Kasparov.
4. bluemountain.com is a cyber bookstore.
5. Morphing is the process of transforming an object into another object before your eyes.
6. Secondary memory is volatile.
7. The Config.BAT file is an ASCII file that contains instructions to DOS regarding your system configuration.
8. The RAM allows booting up the machine, and allows you to control certain hardware settings.
9. Video conferencing, such as that used by Dimension Data in Rondebosch, uses asynchronous transmission of data.
10. Virtual memory is the memory as it is seen by the user and is much bigger than secondary memory as it also makes use of primary memory.

/10/

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Section B - Answer all the questions in this section - 50 marks

Question 4 - Computer architecture - 6 marks

1. It is very important to store, and then backup processed data.
   1. What is meant by "backup"?
   2. Why would it be unwise to backup data, which is already stored on the hard disk, on another directory of that same hard disk?
   3. Name TWO types of devices that can be used to backup data.

   [4]

2. There are two traditional ports used in all personal computers. They are the COM port and the LPT port. For each of the following, select which port would be used. Write down the numbers and only COM or LPT.
   1. To connect a mouse
   2. To connect a printer which is just next to the computer

[2]

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Question 5 - System software - 5 marks

When a computer is switched on, control is automatically given to the … 5.1 … The computer then does a self-test and compares all components against the record in the … 5.2 … If any components are faulty a(n) … 5.3 … message will be displayed on the screen. The … 5.4 … program then decides if… 5.5 … from the A drive or the C drive must be loaded.

/5/

Question 6 - Data communication - 26 marks

1. A small school is setting up a new computer centre, with 11 stand-alone computers, for learners. The school could have installed a network, but decided against this idea. Give TWO reasons for this decision.

   [2]

2. A sawmill has two depots, A and B, 5 km apart. The head office is situated at depot A. Data, necessary for processing is entered by the managers of the two depots using two workstations, into a central server which is situated at the head office. A third workstation at head office handles all office administration.

   Note these facts and answer the following questions:

   1. Why is a printer at depot B not necessary?
   2. A dedicated line links depot B to the head office.
      1. What is meant by a "dedicated line"?
      2. Name TWO types of connections you would recommend for this line.

   [4]

3. Consider the following networks:

   Network A - A set of dumb terminals connected to a file server.
   Network B - A set of microcomputers each with 8 MB RAM and colour VDU but without hard disks, connected to a file server forming a client-server network.
   Network C - A set of microcomputers each with 8 MB RAM, colour VDU and small hard disks connected together to form a peer-to-peer network.
   

   Using the networks described, state with reasons, which network is best suited to each of the following applications:

   1. A computer system for a school where learners are developing their own programs.
   2. A computer system at a company for recording sales.
   3. An information retrieval system at a library, where users look up the catalogues of books on the computer system.
   4. A computer system in a large company using a text-based word processor.

   [8]

4. The head office of a firm decides to install a LAN (Local Area Network). Up to now they have used stand-alone PCs which have been sufficient for their needs. This has included the use of Windows '98 software. Their existing equipment will be used when setting up the LAN. All the existing PCs are standardised to meet a minimum configuration and all come from one reputable supplier. The firm has insisted on a client-server type of network.
   1. In order to set up the network several items of hardware and software will have to be purchased.
      1. What additional item(s) of hardware will be required for each PC?
      2. What is the purpose of this new hardware?
      3. What major item(s) of hardware will be required for the network as a whole?
      4. Name TWO functions that the item(s) that you named in 7.1.3 will perform.
   2. Cabling forms an integral part of any network and influences the topology that will be used.
      1. What type of cabling do you suggest the firm should use?
      2. Draw a rough diagram of this cable OR provide a clear description of it.

[12]

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Question 7 - Computers in society - 3 marks

1. 'Speech is a good way of communicating with computers.' State whether you agree or disagree with this statement. Give ONE reason for your answer.

   [1]

2. In 1999 the Happy99 virus attacked computers. It arrived on a user's personal computer via email.
   1. In which part of an email message can a virus reach a personal computer?
   2. The Happy99 virus was a worm virus. Name ONE other kind of virus, which can reach a personal computer via email.

   [2]

/3/

Question 8 - Integrated question - 10 marks

1. The local area network is linked using cable connectors. How might the wide area network be linked between:
   1. Bellville and Cape Town?
   2. London and Cape Town?
2. Describe TWO ways in which use of the LAN benefits work in a newsroom or the publishing of a newspaper.
3. In what format would an editor on the paper prefer to receive a report from a correspondent - as electronic mail or a facsimile transmission? Give a reason for your decision.
4. How could a sports photographer at a soccer match in Oudtshoorn take a photograph, and very quickly send that photograph to the newspaper headquarters in Cape Town? (He does not have time to have it developed in Oudtshoorn.)
5. Which ONE of the following would be most suited for use by a sports reporter working at the soccer match? - personal computer (PC), laptop or palmtop.
6. Print newspapers have to compete with online newspapers. Name ONE weekly South African newspaper available online.
7. Name ONE desktop publishing application that is used for the editing and laying out a major newspaper.
8. The network administrator of a newspaper headquarters would probably have the qualification MSCE or CNE. Select the most suitable qualification for administering an NT network.

/10/

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Section C - 20 marks

Question 8 - Presentation Skills Module - 20 marks

1. 1. Which computer application would you use to plan the layout of the field with regard to lights, seating, speakers, toilet facilities, stage, etc.? Give a reason for your choice.
   2. What computer application can you use, that would give the exact length/distance of the wiring needed for the connections? Note that these lengths/distances will change as the plan develops.

   [2]

2. 1. You have to create advertising for the concert. There are two types of graphics - vector and bitmap. Which type of graphic would you use if you wished to enlarge or make the graphic smaller without creating fuzzy lines?
   2. Give the name of a well-known computer program that will let you create graphics in bitmap format.
   3. What is the most common extension of a graphic found on the World Wide Web?
   4. To download a graphic from the World Wide Web you position your mouse pointer over the graphic and then click the left or right mouse.
   5. If you decide to organise the booking for the concert via the World Wide Web, what scripting language should you have an in-depth knowledge of?

   [5]

3. 1. Give the name of a well-known desktop publishing program that you can use for creating the brochure about the concert.
   2. Owing to certain problems you will have to create the brochure at one centre and print it at another centre. Name TWO fonts that are certain to be on both computers.
   3. What TWO colours should you not use next to each other in case the reader is colour blind?
   4. How should the heading text of the brochure be different from the body text, i.e. what is the difference in font, font style or effect, between heading text and body text?
   5. Name TWO advantages of desktop publishing over word processing applications.

   [8]

4. To advertise the concert you decide to create a web site.
   1. Name ONE ISP where you can host your site at no cost with any encumbrances.
   2. What well-known web editor would you use for creating the web pages?
   3. What major technical consideration or problem must be borne in mind in creating this site to be viewed in South Africa, especially if you wish to add sound?
   4. GIF Construction Set is used to create animations for the web page. This program is available on the World Wide Web. It costs $20 to register this program. Is this program shareware or public domain software?
   5. What is the new programming language called that can add animation, sounds and interactive programming to a web page?

[5]

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