INFORMATION TECHNOLOGY
PAPER TWO (P2)
GRADE 12 
EXAM PAPERS AND MEMOS
SEPTEMBER 2016

MEMORANDUM

SECTION A: SHORT QUESTIONS 
QUESTION 1 
1.1

1.1.1 Primary Key ✔ (1)
1.1.2 Robotics ✔ (1)
1.1.3 Protocol ✔ (1)
1.1.4 Router ✔ (1)
1.1.5 Spyware ✔ (1)
1.1.6 Convergence ✔ (1)
1.1.7 Encryption ✔ (1)
1.1.8 Rollback ✔ (1)
1.1.9 Data warehousing ✔ (1)
1.1.10 Fuzzy logic ✔ (1) 

1.2

1.2.1 C ✔ freeware (1)
1.2.2 D ✔ Clock multiplication (1)
1.2.3 C ✔ HTML (1)
1.2.4 D ✔ encapsulation. (1)
1.2.5 A ✔ interpreter (1) 

TOTAL SECTION A: 15 

NOTE:  

• Do not accept answers that use general terms: cheaper, faster 
• Do not accept rephrasing of the question 
•  Do not accept rephrasing/duplication of the answers in a list 

SECTION B: SYSTEMS TECHNOLOGIES 
QUESTION 2 
2.1

• Provides connectors to allow other circuits (CPU, RAM,  etc.) to connect to it. ✔
• Ensures that all components of the computer can  communicate with one another.✔
• Distributes power to the parts that connect to it. ✔ (3)

2.2

2.2.1 1 333 MHz ✔ (1) 
2.2.2 The System clock measures the speed at which data is moved  on the Front Side Bus. ✔ (1) 
2.2.3 RAM✔ and CPU✔ (2) 

2.3

2.3.1 Clock multiplication ✔+ definition (speed ratio between the  FSB and the CPU , which allows the CPU to do more tasks as  it waits for the FSB) ✔ (2) 
2.3.2 High speed memory that stores frequently accessed  instructions. ✔ (1) 
2.3.3 Web/Internet Cache ✔ + description (temporary storage for  visited web pages to reduce bandwidth usage). ✔ 
Hard Drive Cache ✔+ description (embedded memory on the  hard drive that acts as buffer between the physical platter that  stores data and the rest of the computer, keeping a record of  frequently accessed data) ✔ (4) 

2.4

2.4.1 No. ✔  
ANY ONE of the following explanations: ✔ 

• • No expansion slots 
  • Cannot change processor 
  • Add RAM etc. (2) 

2.4.2 ANY TWO: ✔✔ 

• • Easy to repair the computer by replacing a broken or faulty  component. 
  • Easy to upgrade the computer by adding new parts or  replacing existing ones with more powerful versions. 
  • Determine own system configuration by combining different  components. (2)

2.5

2.5.1 Any TWO: ✔✔ 

• • Manages hardware and software
  • Manages memory space and tasks 
  • Provides a user interface (2) 

2.5.2 Any TWO Advantages: ✔✔ 

• • Often Free
  • Can add to code 
  • Often available for multiple platforms. (2) 

2.5.3 Any TWO Disadvantages: ✔✔ 

• • Limited support 
  • Not always fully debugged 
  • Not always fully tested (2)

TOTAL SECTION B: 24

SECTION C: COMMUNICATION AND NETWORK TECHNOLOGIES
QUESTION 3 
3.1

3.1.1 WAN ✔ (1)
3.1.2 LAN or WLAN ✔ (1) 

3.2

3.2.1 Network Interface Cards: 
Used to link the network cable to the PC – supplies the port ✔ and to convert the outgoing data to the format ✔that the cable will be able to carry ✔and vice versa to transform the incoming data into a format that the computer can work with. (3) 
3.2.2 Switch: A device that connects computers in a network to a  central location so that communication can occur. ✔ It directs  traffic between devices connected to the network. ✔ (2)

3.3 

3.3.1 Skype ✔ (1) 
3.3.2 Voice Over Internet Protocol, ✔ is the protocol that allows  telephone calls to be made over LAN, WAN and Internet. ✔ (2) 
3.3.3 Twitter (1) 
3.3.4 Microblogging is the posting of short text entries usually via a  cellphone or smartphone on a platform like twitter ✔ whilst  blogging is updating your website regularly with news and events  like a journal. ✔ (2) 

3.4

3.4.1 Cookies are small files which are stored on a user's computer. ✔ They are designed to hold a modest amount of data specific to a  particular client and website, ✔and can be accessed either by  the web server or the client computer. (2) 
3.4.2 ∙ Not having to re-enter some of your information when you  re-visit, ✔ as it remembers you. (1) 
3.4.3 Any TWO ✔✔ 

• • Must be from a reliable and well-known source (well-known  author) 
  • Compare information from different websites 
  • Must be from authors who are frequently cited by other  authors in the field.
    Any other useful advice (2)

3.4.4 Used for security purposes to verify the authenticity of the owners  of the site. ✔ (1) 

3.5

3.5.1 Any TWO ✔✔ 

• • Dropbox
  • Google Docs
  • Skydrive
    any other valid online facility. (1) 

3.5.2 Any TWO ✔✔ + Explanation ✔✔ 

• • Read – The user is allowed to view the files only
  • Write – The user can also delete, modify, and save new files.
  • Execute – The user can run the directly programs from this  location. (4) 

3.5.3 Yes. ✔ Most of the services have strong online antiviruses  installed on their servers. ✔ (2) 

TOTAL SECTION C: 26

SECTION D: DATA AND INFORMATION MANAGEMENT 
QUESTION 4 
4.1

4.1.1 Server ✔ (1) 
4.1.2 Any ONE ✔ 

• • Blackfish 
  • Microsoft SQL Server 
  • MySQL 
     Any other valid server based DBMS (1) 

4.1.3 Allows many concurrent connections ✔ /   Can be accessed remotely ✔ (2) 

4.1.4 No. ✔ A distributed database ✔ would be recommended so as to  respond to local requirements. ✔ (2) 

4.2

4.2.1 Any TWO ✔✔ 

• • Management 
  • Maintenance 
  • Security access rights 
  • Backup 
  • Installing software
  • Configuring software (2) 

4.2.2 Data Independence – When the data is independent of storage  media and application. ✔ (1) 
4.2.3 Physical independence ✔ Logical independence ✔ (2)
4.2.4 Protection of data from unauthorised access by users. ✔ (1) 
4.2.5 Any TWO ✔✔ 

• • Passwords 
  • Access rights 
  • Data encryption (2)

4.3

4.3.1 A field that is used to link to a field in another table. ✔ (1)
4.3.2 InfoID ✔ (1) 
4.3.3 The process of making a database optimal, ✔ by removing  anomalies✔ like redundancy to enable easy reports. (2) 
4.3.4 Update, ✔ Delete ✔ and Insert ✔ anomalies (3)

4.4

4.4.1 SELECT * ✔FROM PlantDetails ✔ (2) 
4.4.2 UPDATE ✔PlantDetails SET BotanicalName= ‘Merwilla  plumbea’✔ 
From PlantDetails WHERE BotanicalName=’Merwilla pumbea’✔ (3)

TOTAL SECTION D: 26

SECTION E: SOLUTION DEVELOPMENT 
QUESTION 5 
5.1

5.1.1 (-) private ✔ 
        (+) public ✔ (2) 
5.1.2 Any ONE ✔ 

1. • +getName:String;
   • +getBotanicalName:String;
   • +getStock (1) 

5.1.3 The purpose of a constructor is to create an instance of the  object/To instantiate the object. ✔ (1) 
5.1.4 Yes, ✔ If a class does not contain a constructor, a default  constructor will be called to instantiate the object. ✔✔ (2) 

5.2

5.2.1 While Loop / Conditional Loop✔ (1)
5.2.2 Display iNumber ✔and Increase the value of iNumber by 13. ✔ (2)
5.2.3 7 ✔ (1)
5.2.4 As soon as iNumber >100✔? (1) 
5.2.5

iNumber ? 13 ✔ 
Loop until iNumber>100 ✔ 
Dis? play iNumber ✔ 
iNu ? mber ? iNumber +13 ✔ 
End Loop ✔ 
Display Statement ✔ (6) 

5.3

5.3.1 An Array is a data structure ✔ that contains elements of the  same data type. ✔ (2) 
5.3.2

ArrNames:Array[1..3] ✔of string✔ = (‘One’, ‘Two’,’Three’);✔ Alternative Solution: 
Type 
TarrNames=Array[1..3] of string = (‘One’, ‘Two’,’Three’); 
Private  
ArrNames:TarrNames; (3)

TOTAL SECTION E: 22

SECTION F: INTEGRATED SCENARIO 

QUESTION 6 
6.1

6.1.1 Web browser ✔ 
Any ONE ✔ 

• • Internet Explorer 
  • Google Chrome 
  • Mozilla Firefox (2)

6.1.2 HyperText Transfer Protocol ✔ (1) 
6.1.3 Bandwidth: The total volume of data that can be transmitted from  one point to another during a given time. ✔✔ (2) 
6.1.4 Yes. ✔ They need to setup their webserver ✔ and register their  server address on the Internet. ✔ (3) 

6.2

6.2.1 Any THREE ✔✔✔ 

• • Phone numbers 
  • Address 
  • School 
  • E-mail address 
    Any other relevant answer. (3) 

6.2.2 By sending e-mails purporting to be from reputable companies ✔ in order to induce individuals to reveal personal information, such  as passwords and credit card numbers, online.✔ (2)
6.2.3 Phishing ✔ (1) 
6.2.4 Trolling is sowing discord on the Internet by starting arguments  or upsetting people, by posting inflammatory, extraneous, or off topic messages in an online community (such as a newsgroup,  forum, chat room, or blog) with the deliberate intent of provoking  the readers. ✔ (1) 
6.2.4 Any ONE ✔ 

• • If the person is a friend on social networks, unfriend him. 
  • Do not reply to their messages. 
  • Expose them online. (1)

6.2.5 Any THREE ✔✔✔ 

• • Physical computer theft 
  • Theft of intellectual property 
  • Identity theft 
  • Money theft
  • Data Theft/Espionage (3) 

6.2.6 Any THREE ✔✔ 

• • Hacker 
  • Cracker 
  • Virus Author 
  • Cybergang 
  • Spammer (3) 

6.3

6.3.1 An app is a computer program designed to run on mobile  devices such as smartphones and tablet computers. ✔ (1) 
6.3.2 Any TWO Mobile devices ✔✔ 

• • Cellphone 
  • Tablet 
  • iPad (2) 

6.3.3 The trend for information that was previously accessed through  conventional web pages and browsers, ✔ to be accessed by  mobile apps on mobile devices.✔ (2) 

6.4

6.4.1 Any ONE – Wi-Fi ✔ 

• • Wireless network connectivity 
  • A standard that allows devices to communicate wirelessly  with one another
  • Wireless Fidelity (1) 

6.4.2 Any suitable explanation ✔✔ 

• • Some Wi-Fi networks are used for WLAN connectivity without Internet access. 
  • The business may require users to pay for Internet access. (2) 

6.4.3 Any ONE ✔ 

• • Packet-sniffing 
  • Eavesdropping (1)

6.4.4

1. 1. No. ✔ A firewall protect a computer from unwanted access  but they do not secure outgoing data. ✔ (2)
   2. Yes. ✔ ∙ Any ONE ✔
      1. You can only decrypt the transmitted data if  the encryption key is known.
      2. Without decrypting the data would not be useful. (2)
   3. No. ✔ Virus scan only scans local computers and does not  affect outgoing data. ✔ (2) 

TOTAL SECTION F: 37 
GRAND TOTAL: 150