PHS CyberSchool

Computer Studies SG 

Last updated 17 Nov 2004

Theory examination November 2004 - 90 minutes - 73 marks

Question 1 - Multiple-choice questions - 1 mark each - 20 marks

Select the one answer to each question which you think is the correct or the best answer. Just write down the letter.

1. The acronym GUI means:
   1. Graphical user interface 
   2. Greyed user information 
   3. Group user icons 
   4. Group user interconnect 
2. Main memory is referred to as: 
   1. Extended 
   2. Primary 
   3. Secondary 
   4. Temporary 
3. RAM is: 
   1. Long term 
   2. Non-volatile 
   3. Permanent 
   4. Volatile 
4. A Trojan horse virus is a program ...
   1. disguised as a useful program but containing hidden instruments to perform a malicious task instead.
   2. that copies itself into memory.
   3. that executes a command after being initialised.
   4. which is only executed when it is called up.
5. Three basic types of viruses: 
   1. Boot sector, executable and macro 
   2. Boot sector, executable and micro 
   3. Boot, set-up and macro 
   4. Logic, executable and macro 
6. Defrag should not be used without first:
   1. Running Backup 
   2. Running FAT 
   3. Running Scandisk 
   4. Running utilities 
7. Compact disks are used as/to ...
   1. backup data. 
   2. primary memory. 
   3. save data which is too much to fit onto a single hard drive. 
   4. store data magnetically. 
8. The hardware which converts digital signals of a computer to analogue signals which can be carried along a telephone line:
   1. CPU 
   2. Fax 
   3. Modem 
   4. Printers 
9. What is an operating system? 
   1. Creates a link between the user and the computer hardware by providing an interface, or environment, in which you can communicate with the computer. 
   2. Hardware 
   3. Provides a series of utilities and commands that you can use to manage your files, folders and disks. 
   4. Both (A) and (C) 
10. To send a printed copy from a personal computer, it is necessary for the transmitting computer to have the following additional equipment: 
    1. fax modem 
    2. modem 
    3. printer 
    4. scanner 
11. Which ONE of the following functions is NOT provided by an operating system? 
    1. A spell checker for your documents 
    2. Instructions to coordinate the flow of information between the programs, files, printer, storage devices and other components of your computer system 
    3. Programs for organising files
    4. Programs that allow you to specify the operation of the mouse 
12. The CPU loads programs from:
    1. Arithmetic to Logic Unit 
    2. CD Rom to secondary memory 
    3. Primary memory into secondary memory 
    4. Secondary memory into primary memory 
13. The term "Utility" refers to: 
    1. Software needed for networking 
    2. Software that detects viruses 
    3. Software that makes our lives a little easier 
    4. Software to extend memory 
14. Cache memory can also be called: 
    1. Permanent memory 
    2. Primary memory 
    3. Secondary memory 
    4. Slave memory 
15. What does the Windows utility "Scandisk" do? 
    1. "Boot" your system 
    2. Finds and fixes logical errors that may occur on disk 
    3. Scan for viruses 
    4. Scan through programs on the hard drive 
16. Bits refers to:
    1. Back-up utilities program 
    2. Basic codes 
    3. Basic input system 
    4. The smallest unit of storage on a computer 
17. Clock speed is measured in: 
    1. bps 
    2. Mb 
    3. MHz 
    4. RAM 
18. When a program becomes part of a silicon chip it is called: 
    1. Embedded 
    2. Firmware 
    3. Hardware 
    4. Software 
19. Which of the following in NOT a characteristic of DRAM: 
    1. It must be refreshed 
    2. Slow 
    3. Used for cache 
    4. Used for primary memory 
20. CMOS refers to 
    1. Anti-virus program 
    2. Revised version of MS DOS 
    3. Specialised software 
    4. Type of memory chip

[20]

Question 2 - Computer architecture - 15 marks

Write down the letter of the item in Column B which best matches the description in Column A.

7. What are registers used for in the CPU? (2)

8. Name the two main components in the CPU. (2)

9. What does it mean when a a device is called 'hot swappable'? (1) 

10. Bluetooth is a wireless networking system. How does it connect with devices if there are not wires? (1)

11. Ports  - Identify the following.  Select from:  LPT, COM, USB

a. ...........................

b. .....................................

c. ..................................

[15]

Question 3 - System software - 10 marks

1. What does BIOS stand for? (1)
2. In what type of memory is BIOS always stored? (1)
3. Name the three components of the BIOS and briefly describe the function of each. (3)
4. What is a driver? (1) 
5. What is a computer virus? (2) 
6. Give two ways in which a computer virus can be spread. (2)

[10]

Question 4 - Data communication - 15 marks

1. Give two advantages of a network. (2)
2. Why would a server-based network be a good idea for the layout in the above example? (2) 
3. What hardware must each computer have in order to link to a network? (1) 
4. What does the term topology refer? (1)
5. Of the three major topologies, ring bus and star, which fits each of the following descriptions? (4)
   1. The computers are connected to the network in a line, all attached to the same cable 
   2. Each computer is connected to the next computer, with the first one being connected to the last one 
   3. In what topology are the workstations not affected if one machine is broken? 
   4. In what topology or topologies is it easy to add workstations? 
6. At each table is a hub. What is the function of a hub? (2) 
7. Give two functions the network administrator must perform, before the centre can be used. (2) 
8. Give one advantages of a fibre optic cable. (1)

[15]

Question 5 - Social implications and ethical issues - 10 marks

1. List four possible advantages and disadvantages of using email. (Be careful, meaningful and logical.) (4)
2. What is a digital signature? (2)
3. Computers form an essential part of today's banking. Give two examples where computers can help the man in the street with his transactions. (2)

[8]

Question 6 - Utilities and Operating System - 5 marks - ½ each

Write down the letter of the item in Column B which best matches the description in Column A. ½ each.

[5]

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