Information Technology Memo 2 (English)

May-June 2022 — Grade 12 / Matric — Information Technology

Memo 2022 Grade 12 English

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🎯 150 marks 📄 3 pages 📝 89 items found 📚 6 topics

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Q1— Section header —

1.1.1Bluetooth (1\

1.1.2cookie (1\

1.1.3Expert system (1\

1.1.4extremely high volumes of traffic that request data from the website. (1\

1.1.5ytoje (2

1.2.1Cyberbullying 1\

1.2.2iOS (1\

1.2.3RSI (1\

1.2.4Algorithm (1\

1.2.5 Spam (1\

1.2.6 Hyperlink (1\

1.2.7 Machine Cycle (1\

1.2.8 Machine code (1\

1.2.9 GIGO (1\ TOTAL SECTION A: 15 Information Technology/P2 DBE/202

Q2— Section header —

2.1.1a\ DIMM slot (1\ b\ Any TWO functions of a motherboard Houses components (also accept specific components\

2.1A core is a single/ separate processor on a CPU chip (1\

2.1Any ONE type of storage device used to increase storage space SD card / memory card (1\

2.1Central Processing Unit (CPU\ (1\

2.1.6Any ONE motivation for having a dedicated graphics card Needed for graphics intensive applications (Video editing / CAD Imp rove

2.2.1 Any ONE for what is modular design: Comp uter is built up from separate modules/ parts An indication that the computer consists of individual components (1

2.2.2Any ONE reason for using modular design Components can be combined according to your needs Easy to upgrade/replace Easy t o repair (1\ Information Technology/P2

2.3.1Any TWO properties of CPU cache memory: High speed memory/static memory Memory on the CPU Stores frequently used instructions/stores instructions likely to be used next (2\

2.3.2Any TWO other types of caching that is used on a computer system: Web caching Disk caching (2\

2.4.1Trojan is malware disguised as useful software A user is tricked into installing the Trojan with the assumption that they are installing useful/

2.4.2A firewall monitors/c ontrols/filter traffic (incoming & outgoing\ on a network /internet and prevents unauthorised communication

2.5Difference between software update and patch: An update fixes code adds new features /enhances security to software A patch removes software bugs replacing incorrect code

2.6Any TWO ways t o free up storage space Use a disk clean up tool /example of disk clean

Q3— Section header —

3.1.1Any ONE type of cable used in wired LAN UTP /Ethernet cable (CAT 5/6/7\ Fibre (1\

3.1.2Any ONE type of media used to trans mit in WiMAX Radio waves Electromagnetic waves (1\

3.1.3Wi Fi (1\

3.2.1VPN (Virtual Private Network\ (1\

3.2.2(a\ IP address: A unique address /code that identifies a device on a network. (1\

3.22(b\ Purpose of a DN S: To obtain the correct IP IP addresses (1\

3.2.3The NIC encod es /decod es data that is transmitted across a network

3.2.4Intranet is a network similar to the Internet/browser based network of which the access is limited to a specific organisation (2\

3.3.1 Any ONE characteristic of streaming The immediate and real time del ivery of media content to a receiving device

3.3Any ONE way to prevent unauthorised viewing Use on a closed channel /do not connect to a larger network

3.4.2(b\ The CA verifies that the business or organisation is valid (1\

3.5Difference between fu nctions of a router and modem A modem converts the format of a signal for a specific communication medium. A router

3.6.2Purpose of using SEO To ensure that search engine will place the higher up in the order of search results.

3.7.1FTP (File ransfer Protocol\ (1\

3.7.2Any ONE type of file sharing service Cloud storage BitTorrent Git/Git hub Also accept examples of Cloud Storage like Google Drive, One Drive etc.

3.7.3Any ONE benefit of using online file storage services accessible from many devices/places collabora tion/sharing Saving on local storage space Servers take responsibility for creating a backup of the files

Q4— Section header —

4.1It is the primary key. (1\

4.2Primary key Must be unique Canno t be empty/have a null value/required field (2\

4.3IDNumber (1\

4.4Suitable data type for the VehicleRegNumber and motivation Short Text (any text data type\ A vehicle registration number contains numbers and l etters (2\

4.5Why should name and surname be split into two fields There is more than one piece of information in the field OR Any indication that i t might be necessary to separately work with the name and surname values

4.6.1Data redundancy refers to the unnecessary repetition of data (1\

4.6.2Normalisation (1\

4.7.1Example of useful information extracted from the data Establishing the frequency of offences/most common offence/least common offence Accept any relevant or correct answer of information gained from the table

4.7.2How can step 3 & 4 in the data progression diagram be applied A logical solution linked to the information obtained Example Increase policing at stop signs Also acc ept other correct examples based on the information from

4.7.1(2\

4.7.3Fuzzy logic deals with reasoning that works with probabilities. Drivers not stopping at stops are reckless drivers/there are many reckless drivers in the communit Also accept any other correct example

4.8.1SQL injection A hacking technique where SQL statements are entered into data input fields instead of data. (2

4.8.2Audit trail A record or 'trail' that is made to keep track of who made changes to a database and when those changes were made (2\

4.9.1(a\ Logical integrity

4.9.1(b\ Physical integrity ensuring that data is protected against damage from power surges, natural disasters, theft, etc. 1\

4.9.2Any TWO ways to ensure the date is entered in the correct format Provide a list/component to select from/ date picker/calendar Specify format in input component

4.10How is transaction processing used to maintain data integrity In transaction processing, transactions that are d ependent on one another to work are grouped together The transaction will only

5.1.1(1\

5.1.2(2\

5.2.1Any ONE reaso n for u sing an array vs variable When working with a large number of values /variables

5.2.2Any ONE reason why names and ages cannot be stored in array provided An arra y can only store values of one specific data type Names and ages are represented by two different data types The pro vided array can only store integer

5.2.3Loop k index 10 down to 7 arrNum[k] arrNum[k 1] arrNum[6] 92 OR6

5.3.1(a\ FALSE (1\ (b\ TRUE (1\ (c\ FALSE (1\

5.3.2An accessor returns the value of an attribute of an object and a mutator changes the alue of an attribute of an object (2\

5.4Number Factor Loop Number mod Loop = Factor = 1 Output

6.1.1Crowd funding The practice of funding a project or venture by raising money from a large number of people who each contribute a small amount, typically via the internet/social networks. (1\

6.1.2(a\ Any TWO reasons of using te chnology to automate the assembly of new vehicles Safer work environment Fewer people employed /cost saving

6.2.1Radio Frequency Identificat ion (1

6.2.2Any TWO ways how passive tags work Energy from reader radio signal at tollgate powers the tag Tag sends a signal that the reader use

6.2.3(a\ GPS (1\ (b\ Any ONE reason why active tags will be needed for satellite tracking The signal needs to be transmitted over longer distances

6.3.1Uncapped Unlimited amount of data that can be used in a month OR No limit on amount of data used. (1\

6.3.2Any ONE reason for installing fibre rather than mobile LTE Fixed location internet has a lower cost per GB than mobile LTE Fibre might have faster connection speeds depending on the

6.3.3Router/ONT (1\

6.3.4Will the 70GB Night Surfer Data hold a bene fit for the company Yes backup /update procedures can be done overnight OR

6.4.1(a\ Rootkit Software designed to obtain administrator rights to a computer for unauthorised access. (1\ (b\ Any ONE risk to data

6.4.2Social engineering An attempt to manipulate or con someone into installing malware or giving out sensitive personal information. (2\

6.4.3Any ONE way that anti virus software ident ifies malware The anti virus software scans the files

6.5.1Any TWO ways that AI can be used when working with big data ind possible connections among datasets ecognize knowledge using natural language processing

6.5.2With the duplication model, each separate site has a complete copy of the entire database stored. With the partitioning model, each site stores and manages only the part of the database it works with (2\

5.3(a\ Purging eleting/removing records permanently from a database. (1\ (b\

6.6.2 Any ONE benefit of virtualisation Saving on hardware Can run software written for ot her platforms Convenience of not having to keep multiple devices (1\

6.6.3 Is it compulsory for the company to pay for the additional proprietary operating system Yes the user must pay for the operating system to avoid committing piracy

Topics Identified

Word ProcessingSpreadsheetsDatabasesProgrammingNetworkingHardware

Mark Allocation

Total150 marks

Sections6 + 6 = 12 marks

Paper information

SubjectInformation Technology

Year2022

SessionMay-June

TypeMemo

PaperPaper 2

LanguageEnglish

Pages13

Downloads3

Examination context

Decade2020s

Years ago4y

Season—

Start day—

Exam period—

Days since exam—

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