PHS CyberSchool

Computer Studies SG Grade 11

Last updated 07 Jun 2004

Theory examination May 2004 - Answers

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

1. 3
2. 2
3. 3
4. 2
5. 1
6. 3
7. 4
8. 3
9. 2
10. 3

Question 2 - Matching columns - 5 marks

1. 10
2. 5
3. 14
4. 11
5. 13

Question 3 - Matching columns - 5 marks

1. 2
2. 4
3. 5
4. 7
5. 3

Question 4 - Matching columns - 10 marks

1. Jeff Bezos
2. Sergey Brin and Larry Page
3. Carly Fiorina
4. Steve Jobs
5. Christopher Sholes
6. Steve Jobs
7. Bill Gates
8. Steve Jobs, Douglas Englebart
9. Linus Torvalds
10. Ken Kutaragi

Question 5 - Computer architecture - 30 marks

1.  
   1. expansion slot (1)
   2. transistor, semi conductor  (1)
   3. buses  (1)
2. Fetch the instruction, Decode the instruction; Transfer the data, Execute the instruction [4]
3.  
   1. BIOS (1) 
   2. DIMMs (1) 
   3. data or instructions likely to be used by the processor (1) 
   4. SRAM (1) 
   5. nothing (1) 
   6. BIOS - system programs (1)
   7. able to read and write to memory 10-15% faster, pipiline burst mode (1)
   8. temporary storage of memory (1)

4.  

1. Yes,  Has CD / DVD (1)
2. 80GB HDD (1)
3. No (1)
4. 256MB RAM(1)
5. RAM (1)
6. Do not know.  Perhaps none. (1)
7. CD / DVD (1)
8. MS Windows XP Home Edition (1)
9. 56K Modem Base (1)
10. Intel (1)

1. EEPROM (1)
2. a good reason  (1)
3. (3)
   1. Dr Miller - carry files home
   2. Mr Mortley - carry pictures for his digital camera
   3. Ms Joubert - carry data / programs as required

Question 6 - Internet and Social Implications - 30 marks

1. Polka [1]
2. less power, can go into sleep mode, give off less radiation  [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.  Looked for meaningful answers [2]
4. speed of modem, network availability  [2]
5. can be done from the comport of your home, no queues, can oder any time of day or night, can order things from far away.[3]
6. colourful pictures, animation, sound  [3]
7. Give the difference between the following. [3]
   1. A digital signature.- A digital code that can be attached to an electronically transmitted message that uniquely identifies the sender. Like a written signature, the purpose of a digital signature is to guarantee that the individual sending the message really is who he or she claims to be. 
   2. A certificate authority. - A trusted third-party organization or company that issues digital certificates used to create digital signatures and public-private key pairs.
   3. A digital certificate.- An attachment to an electronic message used for security purposes. The most common use of a digital certificate is to verify that a user sending a message is who he or she claims to be, and to provide the receiver with the means to encode a reply.
8. Internet cafes, training in maintenance of networks, install and maintain networks, manufacture modems and other network apparatus, service providers, design web pages, programming companies that develop new systems for the Internet [4]
9. Answer the following questions on Internet banking. [10]
   1. Ease of use, no long queues, cheaper than banking hall banking  (1)
   2. can draw cash. (1)
   3. cell phone ringing when account used (2)
   4. web browser, Internet Explorer (2)
   5. internet access expensive, poor connectivity in cerrtain areas (2)
   6. check balance, order cheque book, transferring money, ffinding about exxchange rates, paying tax, applying for a loan (2)

Question 7 - Application skills - 10 marks 

1. ID  [1]
2. Sorts alphabetically, only one of each record, can link tables with primary key to secondary key  [2]
3. [7]
   1. Currency
   2. Date / time
   3. Memo, text
   4. Yes / No
   5. Primary key, text
   6. Text
   7. Number

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