Information Technology Memo 2 (English)

November 2016 — Grade 12 / Matric — Information Technology

Memo 2016 Grade 12 English

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🎯 150 marks 📄 17 pages 📝 67 items found 📚 5 topics

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Q1— Section header —

1.1.1(1\

1.1.2(1\

1.1.3(1\

1.1.4(1\

1.1.5(1\

1.2.1Data redundancy (1\

1.2Search Engine Optimisation (1\ Patch /Hotfix (1\ Freeware (1\ Hardware interrupt /IRQ

Q2— Section header —

2.1Any TWO Check that all the important hardware is present and still workin g/performs the POST Power On Self Test Check CMOS settings Locates and loads the operating system /Boots up the computer Controls hardware at a low level

2.2When a program is not being used and the RAM is full , the operating system will move the program from RAM into virtual memory. When you switch back to the program, the operating system quickly swops the program and its data

2.3Enables different threads /independent sections in a program to share the use of one CPU. The CPU swops from one thread to the other ensuring that less of the CPU s resources will be idle at any given time

2.3Graphics card has its own /CPU which generates images that are displayed on the monitor, allowing the CPU to focus on carrying out the instructions of the program, thus making the computer operate faster.

2.5The device is automatically identified by the operating system a nd the required driver software is installed /configured from a library of available

2.6Any Direct link to files /Do not need Internet connection Many users on the network have access to the files Accessible from anywhere on the network Fixed cost/Once off cost Complete control

2.7Any ONE an rent heaper to rent than to buy the software Always have access to latest version of software /automatically updated Have access to some cloud based storage

Q3— Section header —

3.1.1Any TWO Centralisation of data /Data store in one place/Everybody uses the same data Sharing of software Improved communication Entertainment /Play computer games Sharing of data/transferring data without needing a CD/flash

3.1Any TWO A client server network More sophisticated security etter performance (faster\ arge storage so other computers on the network do not need a large hard disk

3.2.1A set of rules for encoding and decoding data for transmission across the Intern et or network Defines how communication takes place between different architectures and allows Internet communication Concepts:

3.2.2Responsible for sending e mail via t he Internet (1\

3.3.1Any TWO Attenuation /signal gets weaker EMI Eavesdropping /listening in/hacking signal Crosstalk Cover relatively short distances /limited range

3.3.2(a\ glass/glass fibre Also accept : light /laser

3.3.2(b\ Any ONE Allow for high s peed data transmission Able to transmit over long distances /No attenuation Safer option as it does not conduct electricity Immune to EMI No crosstalk

3.4Any TWO (Namin (Prevention\ Malware install anti malware make sure anti malware

3.5Any ONE Wireless NIC Fi card /Wi Fi radio card/ Wire less adaptor Fi adaptor Fi dongle

3.5Any TWO Limited to s hort range Interference of signals by s tructures that are in the way Decreases the speed of connectivity when too many people are connected at the same ti Unreliable connection

3.6.1The functionality of many devices has be en incorporated into one device. Concepts: One device Many functions (2\

3.6.2Any TWO imited battery life Limited/poor Internet connection Size of device small devices have less space for more powerful components and batteries Small screen /no keyboard/no mouse/limited input devices

3.7.1A public area where Internet access is available through a wireless Internet connection. Concepts: ree/wireless not password protected ternet access

3.7.2Any ONE Equitable use of the data To prevent misuse of the Wi Fi network Cost to the school Making large uploads/downloads

Q4— Section header —

4.1Any THREE Accurate Up to date/Current Valid Correct /verified Relevant Complete Also accept:

4.2When an item of data changes in a table the change is not applied to all the records related to this data item in other tables in the database. When upda

4.3Any ONE The user does not hav e direc t access to the database Access to the database is through custom written client software application/More secure

4.1Managin maintaining a database Responsible for supervising of users of the database and optimal working of the database itself. Note: Accept: examples of specific tasks

4.4.2Any TWO Maintenance of the database structure When changes have to be made to the underlying structure of the database (creating tables etc\ Analysing and designing activities in terms of new develop ments

4.5Data warehousing partitioning normalisation (1\ The Stand is the primary key in the tblStands t able and is a

4.6.2(c\ DELETE from tblStands WHERE Standno = B02 DELETE from tblStands WHERE StandNo = B02 (2\

4.6CompanyN ame Num Sta SumA ssistants Funda MoreDevices NewWiz

5.1.1Any T design requirements to improve navigation Information that is related should be grouped together e.g personal information and exhibition stand information separately The natural reading order is top to bottom

5.1.1Any TWO Checkboxes should be radio buttons to allow only one option The size of the table field coul d be a combo box/list or a spin dit

5.1Correct UML diagram structure (heading is optional\ All the c orrect p rivate fields with correct data types Field names may differ from memo

5.2.1randNum generate random number in the range 1 to 10 denominator randNum Answer Loop index from 1 to randNum Frac tion index

5.2Is A >3? Astring Is B>A? Display Yes Yes Yes Yes (5\

Q6— Section header —

6.1.1Dynamic website pages are generated on the go . Different users may see different content even if they are visiting the same site. Static website Displays exactly the sa me information to a ll users

6.1.2RSS: A web feed that checks for updated content at a specific time and new content is automatically downloaded /notif ied

1.3Blog: Any ONE applicable explanation The online d iary /marketing pdated with news and events during the day to attract visitors to the exhibits

6.2.1Radio frequency/ Radio frequency ident ification (1\

6.2.2Any ONE The reader can read tags that are moving past/ do not have stop and wait to be scanned Hidden tags can also be read Can read more than one tag at a time Tags can be read from a greater distance

6.3.1Any TWO Some services are free with a relatively small amount of space. You are able to share your documents with others. When you share you may choose to allow the per son to only view and comment/ to edit the document.

6.3.1Speed quick/fast access/less waiting time/ files uploaded and downloaded for quickly Security files private /safe/secure/protection from data

6.3.2(a\ Internet of Things Many d evices are connect to the Internet and can be controlled through the Internet

6.3.2(b\ Information overload: Any ONE When searching for information on the Internet, there are many results making it difficult to get to exact information for the request It may be time consuming to work through all the search results

6.3(a\ Any ONE A service which allows one to view video/movies on the Internet when you want to

6.3(b\ Any difference between Streaming Download Real time Wait for download to be complete Do not have a copy on your computer A copy is saved to your computer

6.3(a\ HTML is required t o format text files (content /source code of web pages so that they display as me

6.3(b\ JavaScript is interpreted by another program (normally HTML program \t runtime Any ONE Be able to: Detect

6.4Any TWO Sensors Antennae Receivers /Microphone Video cameras Storage device Computing device

6.4.3Any ONE Malfunctioning of the system Expensive system Liability issues Susceptible to hacking ccept: a ny other valid reason (1\

6.5Any ONE (1 mark for impact (1 mark for explanation/re ason\ Loss of work time while

6.5Phishing websites lure e mail recipients and Web users into believing that a spoofed website is genuine and when a user enters personal information it is captured and used for illegal purposes Concepts:

6.5An audit trail recor ds who made changes to the database , what changes were made and when the changes were made. Concepts: Any TWO Who What

6.5A website is made unavailable by many computers requesting data from the site at the same time Server s become overloaded due to many requests. (2\ 17

6.7.1A smart card has an electronic chip /processing features (1\

6.7.2

Topics Identified

Word ProcessingDatabasesProgrammingNetworkingHardware

Mark Allocation

Total150 marks

Paper information

SubjectInformation Technology

Year2016

SessionNovember

TypeMemo

PaperPaper 2

LanguageEnglish

Pages17

Downloads2

Examination context

Decade2010s

Years ago10y

SeasonSpring (SH)

Start daySaturday

Exam periodNovember 2016

Days since exam3,640

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