Information Technology Memo 2 (English)

May-June 2018 — Grade 12 / Matric — Information Technology

Memo 2018 Grade 12 English

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Q1— Section header —

1.1.1(1\

1.1.2(1\

1.1.3(1\

2.2RIA (Rich Internet Applications\ (1\ Decision Support System(DSS\ (1\ Adware (1\ Botnet (1\ CMOS

3.8Point of Sale (POS\ system (1\

3.9Spam (1\ TOTAL SECTION A:

Q2— Section header —

2.1.1The motherboard is made up of separate components (1\

2.1Any ONE Keyboard Mouse Monitor Network cable Sound cable/Speaker (1\

2.1To hold the data and instructions being processed (1\

2.1Cache memory is high speed memory that holds data and instructions likely to be used next by the CPU and so speeds up the processing by speeding up access to data and instructions stored on a slower medium.

2.1.5Multiprocessing Multiple cores are used to run multiple programs /threads simultaneously (2\

2.1Any TWO reasons for preferring mobile devices: Always on functionality Availability of communication Convergent Powerful/speed Also accept: Any other suitable reason/ example

2.2Any TWO limiting factors of using mobile devices: Limited battery life Small screen size Difficulty typing on small virtual keyboard Limited storage capacity

2.2.3Any TWO reasons for using SSDs instead of HDDs: No moving parts that can be damaged in mobile environment /More robust Faster at boot time /Faster data transfer rate

2.3.1Any ONE explanation of Cloud application: The processing of the software is done on servers on the Internet An application that resides on the Internet and not on a local computer (1\

2.3Any TWO reasons for using SaaS: Software is rented not bought /Cheaper as do not have to buy/pay for updates/ updating software

2.3Any ONE disadvantage of cloud computing: The service provider could go out of business Security issues Still need a good b ackup polic Slow access

2.3.4Virtualisation Splitting the resources of powerful machines between multiple users Combining resources of many machines into one powerful machine (2\

2.4.1Online digital m edia repository: nline storage location use exclusively for digital content such as music and videos

2.4Any TWO reasons for using media repository: Centralised data/easy access Saves on local device storage space (2\

2.5Any ONE reason for using online backup: To have a copy of the data off site To back up data in case disaster strikes (1\ TOTAL SECTION B:

Q3— Section header —

3.1.1Any ONE Portability and mobility a user can connect via a laptop or other device Access to network from a wider range A device can be added to the network easily

3.1Any ONE Provides a unique address for communication To prevent conflicts in addresses during communication

3.1Any TWO Too far away from the router Too many users are accessing at the same time Lack of sufficient bandwidth Interferences like EMI Interferences by structures like trees/buildings

3.2.1Any TWO mail ecur web hosting Spam filtering (2\

3.2.2Any TWO High speed /permanent connection Allows for internet access and telephone use at the same time Relatively cheap when using a lot of data

3.2.3Connects devices to one another and directs traffic between devices

3.2.4(a\ Any ONE Glass fiber Light Laser (1\

Q4— Section header —

4.1.1Relational database is a database consisting of different tables which are linked with relationships (2\

4.1.2Any ONE Record locking is required: To prevent changes made by one of the staff members from being lost f the record is locked only one user may be allowed to make changes to the content of the record.

4.1.3Any TWO responsibilities of database administrator (excluding planning and creating database\ etup user accounts and user rights etup backup strategy for database reate queries for users of the database

4.2It refers to a field that make s possible that the record can be uniquely identifi (1\

4.2.2Foreign key (1\

4.2.3It means that the primary key can consist of more than one field. (1\

4.2.4One to many relationship One student can borrow many books (2\ Any ONE record on the (tblStudents side of the relationship cannot be deleted if it is linked to records on the

Q5— Section header —

5.1.1Code to be executed when the application start s/when program opens/ run (1\

5.1.2Any ONE The n umber of repetitions is unknown The number of repetitions is dependent on the condition (1\

5.1.3To determine the ASCII /ordinal value of a character (1\

5.2.1(a\ When a class/unit keeps /declares variables private so it cannot be accessed from outside the class /unit Details of attributes are hidden and not directly available/accessible outside the class

5.2.2(a\ Linear /sequential (1\ (b\ Any ONE Provide for testing uppercase and lowercase characters Avoid using fixed values such as 1000 Can only be used

Q6— Section header —

6.1.1Acceptable Use Policy (1\

6.1.2provide the user of a network environment with the rights and responsibilities when using their ICT resources/network

6.2File syncing Ensure that all devices contain the most up to date version of the same document (2\

6.3Any TWO skills Software programming skills Graphic design skills Knowledge on HCI principles Creativity and imagination Knowledge on advances in technology (2\ Any TWO factors: Page must automatically resize/provide for smaller screens

6.4Any ONE MPEG MPEG .MP4 .avi MKV Also accept any other acceptable compression format (1\ nline seminars

6.5Any ONE Make use of RSS feeds Suitable apps Message alerts/SMS

6.6Any THREE functions of an operating system: rovides an interface anages processes and tasks anages memory anages input and output anages the disk/s (3\

6.6Any ONE advantage of using propriet y operating system Formal s upport in terms of help is available /The company owning the operating system supplies a help desk Patches

6.7Passive tags receive all the power they need from the RFID reader and they can only start interacting with the reader once they enter the electromagnetic field generated by the reader. Active tags receive their power from on

6.7Any TWO Prone to mistakes (human errors\ Time consuming Cost incurred with hiring of personnel (2\

6.8Netiquette describes behaviour when sending e mails or any form of electronic communication Any ONE acceptable example You should not advertise products using e mail Do not send lengthy e mails Do not attach very large

6.9Any ONE People often aspire to what seems to be the more popular, common and desirable culture and so discard their own. Often people gravitate to what looks to be the more sophisticated and appealing cultures and

6.10(a\ Encryption is the scrambling of text/data into a new format using specified set rules (2\ (b\ Public key encryption:

6.10(a\ The URL contains https: (1\ (b\ Any TWO The certificate is provided by a third party company like VeriSign It is linked to a specific web address, confirming its validity Date of validity

6.10(a\ Social engineering refers to conning or tricking a person into willingly giving out personal information. (2\ (b\

6.1Initiatives to design, use and dispose of technology in an environmentally or eco friendly way. (1\

6.11Any TWO Store records electronically use less paper Scan research from books rather than copying Switch computers off when not in use Set computers to sleep mode (2\ TOTAL SECTION F GRAND TOTAL

Topics Identified

Word ProcessingDatabasesProgrammingNetworkingHardware

Paper information

SubjectInformation Technology

Year2018

SessionMay-June

TypeMemo

PaperPaper 2

LanguageEnglish

Pages13

Downloads4

Examination context

Decade2010s

Years ago8y

Season—

Start day—

Exam period—

Days since exam—

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