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Computer Studies SG Grade 11

Last updated 06 Jun 2004

Theory examination May 2004 - 90 minutes - 100 marks

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

Select the one best answer to each question.

  1. On the motherboard (the) … is the temporary computer memory area in which data can be stored.
    1. expansion slot
    2. math co-processor
    3. RAM
    4. ROM BIOS
  2. An ISP is a company that has a fast, permanent connection to ...
    1. a computer
    2. the Internet
    3. a mainframe computer
    4. a search engine
  3. The use of fax machines, email and bulletin boards would not have been possible without …
    1. the fact that data can be stored
    2. the use of application packages
    3. data communication media
    4. databases
  4. When confidential data is transmitted there is a possibility that the message may be read by unauthorised people. Which one of the following is a means of reducing this danger?
    1. backup
    2. encrypting
    3. firewall
    4. uninterrupted power supply ("UPS")
  5. 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
  6. BSA (Business Software Alliance ) is a South African firm concerned with ...
    1. Black South Africans (BSA) developing software
    2. E-commerce
    3. Unauthorized use of software applications
    4. Virus software
  7. Which is the fastest of the memory types listed?
    1. DRAM
    2. EDO RAM
    3. ROM
    4. SRAM
  8. Read Only Memory (ROM)
    1. Is volatile
    2. Is programmable
    3. Is mounted on the mother board
    4. Contains the bootstrap loader
      1. i and iv
      2. i, ii and iv
      3. iii and iv
      4. i and iii
  9. The device used in a data communication network to perform the conversion between analogue and digital signals, is called a …
    1. front end processor
    2. modem
    3. decoder
    4. multiplexer
  10. In a database a group of related fields, such as all the information for one customer, is called 
    1. database
    2. field
    3. record
    4. table

Question 2 - Matching columns - 5 marks

Write down the number and word(s) of the item in Column B which best matches each of the descriptions in Column A.

    Column A

    Column B

    1. Linked series of programs that controls, assists, and supervises all other programs on a computer system and that allows dissimilar hardware systems to work together.
    2. Part of the central processing unit that determines the sequence of computer activities, interprets instructions, and controls the way in which those instructions are carried out.
    3. Permanent computer memory system containing data and instructions that can be retrieved and used but never altered.
    4. Step-by-step series of instructions directing the computer to carry out a sequence of actions in order to perform an operation or to solve a problem.
    5. Temporary computer memory system in which data can be stored and from which data can be quickly retrieved.
    1. Arithmetic/logic unit
    2. Bus
    3. Central processing unit (CPU)
    4. Chip, or microchip
    5. Control unit
    6. Data bus
    7. Hardware
    8. Memory
    9. Microprocessor
    10. Operating system
    11. Program
    12. Protocol
    13. Random-access memory (RAM)
    14. Read-only memory (ROM)
    15. SIMM

Question 3 - Matching columns - 5 marks

Write down the number and word(s) of the item in Column B which best matches each of the descriptions in Column A.

    Column A

    Column B
    1. Data diddling
    2. Data leakage
    3. Logic Bomb
    4. Piggybacking
    5. Trojan horse
    1. Bypassing all security systems with an illicitly acquired software package
    2. Changing data before or as it enters the system
    3. Placing illegal instructions in the middle of a legitimate program
    4. Removing copies from the system without a trace
    5. Sabotaging a program to trigger damage based on certain conditions and usually set for a later date
    6. Using a large financial system to squirrel away "slices" of money that may never be missed
    7. Using another person ID code

Question 4 - Matching columns - 10 marks

Write down the name of the person in Column B which best matches/links to the description in Column A.  You may use the person in Column B more than once.

    Column A Column B
    1. Amazon.com
    2. Google
    3. Hewlett-Packard
    4. Invented/developed first Windows  
    5. Keyboard
    6. iPod
    7. Microsoft
    8. Invented/developed first mouse
    9. Open source software operating system
    10. PlayStation2
    • Carly Fiorina
    • Sergey Brin and Larry Page
    • Steve Jobs
    • Bill Gates
    • Michael Dell
    • Ken Kutaragi
    • Linus Torvalds
    • Jeff Bezos
    • Douglas Englebart
    • Christopher Sholes

Question 5 - Computer architecture - 30 marks

  1. Motherboard - printed circuit board that contains the main components of a microcomputer. [3]
    1. If you had an internal modem, into which part of the motherboard would you slot the card in? (1)
    2. Name the common type of switch found on a motherboard. (1)
    3. On the motherboard you may be able to see thin traces or wires. What are these thin lines called? (1)
  2. Describe the machine cycle in the correct order.  [4]
  3. Memory - the part of the system used to store data and programs either permanently or temporarily. [8]
    1. What important program is stored in ROM? (1) 
    2. Where is DRAM found physically on the motherboard? (1) 
    3. What is normally stored in the cache memory? (1) 
    4. Which type of RAM is used for cache memory? (1) 
    5. What is stored in RAM when the computer is switched off? (1) 
    6. What is stored in ROM when the computer is switched off? (1) 
    7. What is the main reason for the utilization of cache memory? (1) 
    8. What is the purpose of registers? (1)
  4. Answer the questions based on the following advertisement from the Incredible Connections web site on 5 May 2004.  [10]

      

    Acer Aspire T310 P4 3.0HT DVD CDRW 

    R8,499.95 

    • Intel P4 HT 3.0GHz 
    • 80GB HDD 
    • 256MB RAM 
    • DVD/CDRW Combo Drive 
    • 16 x DVD ROM Drive / 52x CDRW Drive 
    • 7-in-1 memory card reader 
    • 256MB RAM 
    • MS Windows XP Home Edition 
    • 17" SVGA Colour Monitor 
    • 10/100 Ethernet Network Port 
    • Intel P4 HT 3.0GHz TV 
    • Multimedia speakers 
    • 56K Modem Base 
    • Warranty -1 Year International Warranty 

'By offering exceptional processing power combined with a range of choices, Acer ensures that you have all the features you need to get your work done - with plenty of time left for leisure. Ports and jacks on the front of the computer allow quick connection to peripherals and headphones, while an optional card reader facilitates easy exchange of digital files from the latest mix of storage media. With extra room to upgrade memory, graphics and drives, you'll find that the Aspire T310 strikes the right chord for maximising all your options - now and in the future. Includes MS Works Suite 2004 but not MS Office XP.'

  1. Why would it be possible or impossible to use this computer to save work on a CD-ROM? (1)
  2. How much storage space does the computer have? (1)
  3. Is a presentation program such as PowerPoint already loaded on this computer? Explain. (1)
  4. How much RAM does this computer have? (1)
  5. What holds the programs that you run in memory, as you use them? (1)
  6. What size floppy / stiffie disks is found on this computer? (1)
  7. What of the above will be read by a laser? (1)
  8. What operating system is already loaded on this computer? (1)
  9. What are the details of the hardware that will allow one to connect to the Internet? (1)
  10. What type of processor is found on this computer? (1)
  1. Answer the questions based on information from http://www.high-techproductions.com/memorystick.htm accessed on 18 May 2004 on a memory stick. [5]

The Memory Stick digital data storage is designed to become a standard storage and transfer media. It is smaller than a stick of chewing gum, yet the 8MB Memory Stick has a minimum of five times the storage capacity of a standard 3.5 inch floppy disk. It is available in 4MB, 8MB, 16MB, 32MB, 64MB, and 128MB storage sizes and as a kit with a PC card adapter. Due to its compact design, it is best suited for use in small digital electronics products.  Compared to other IC (integrated circuit) media, Memory Stick digital data storage is smaller in size than compact flash and smart media.

From http://www.high-techproductions.com/memorystick.htm

From http://www.lightedge.co.za/Data/Product_Sheet/msi/mega_stick_256.htm
 
  1. Flash memory is a type of ROM, PROM, EPROM or EEPROM.   Select one. (1)
  2. What would you use flash memory for?  (1)
  3. Where do the following teachers use flash memory?   Explain. (3)
    1. Dr Miller
    2. Mr Mortley
    3. Ms Joubert

Question 6 - Internet and Social Implications - 30 marks

  1. Name a new South African ISP. [1]
  2. Describe how adjustments have been made in the design of computers and computer equipment in an attempt to curb energy consumption and environmental pollution. Give 2 examples. [2]
  3. Truste, WebTrust and BBB are well-known certification stamps issued to etraders. Name the online shop you investigated and discuss its security features OR discuss different security features. [2]
  4. Explain in detail 2 factors that influence the speed of access to the Internet. [2]
  5. Discuss 3 advantages for the consumer of shopping via the Internet.[3]
  6. Name/explain at least 3 methods a web site developer can utilise to keep a browser's attention.  [3]
  7. Give the difference between the following. [3]
    1. A digital signature.
    2. A certificate authority.
    3. A digital certificate.
  8. List 4 new network related occupations. [4]
  9. Answer the following questions on Internet banking. [10]
    1. South Africa is a leading country in the technology of Internet banking.  Give 1 advantage for the client of electronic banking? Explain in a full sentence. (1)
    2. Discuss/explain clearly 1 feature found in ATM banking and not in Internet banking. (1)
    3. Discuss/explain 2 security features online banks use to ensure the safety of their sites.  (FNB have recently introduced some interesting features.) (2)
    4. What software would you need to access the Absa web site?  Give the type of software and the name of a application, e.g. a word processor and MsWord. (2)
    5. From a socio-political point of view name 2 drawbacks of electronic banking in South Africa. (2)
    6. Name 2 banking services offered by FNB, Absa, Standard or Nedbank to their clients who bank via the Internet. Explain in full sentences. (2)

Question 7 - Application skills - 10 marks 

  1. What is the primary key in a list of client names at a bank?  [1]
  2. Describe 2 features of a primary key.  [2]
  3. Indicate the 'best' data type for each of the following fields in an Access database. [7]
    1. Amount of school fees outstanding
    2. Birth date
    3. Details of disciplinary issues
    4. If the school bell is ringing or not
    5. RSA Identity number
    6. Telephone number with code
    7. Total amount of learners in a class

This work may be freely copied for non-commercial use only. Copyright © Pam Miller.