Information Technology Paper 2 (English)

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

Past Paper 2018 Grade 12 English

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🎯 150 marks ⏱️ 3h 📄 17 pages 📝 103 items found 📚 5 topics

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Q1— Section header —

1.13 and 1.2.1 to 1.2.2 \ in the ANSWER BOOK, e.g.

1.1.1

1.1.2Which ONE of the following refers to an encryption process used to authenticate the identity of the sender of an e mail message? Digital certificate Digital fingerprint Digital handshake Digital signature

1.1.3Which ONE of the following refers to data structure that is volatile String One dimensional array Two dimensional array Text file

1.2.1The following declaration statements are provided: The assignment s tatements below have been coded Which of the above assignment statements will cause a compilation/ syntax error?

1.2.2Determine the value of sAnswer after the execution of the statements below. nfo T ITnfo nfoT nTfo (2\

1.3Give ONE word/term for each of the following descriptions. Write only the word/term next to the question number (1.2.1 to

1.2.10\ in the ANSWER BOOK.

1.3.1Web applications designed to deliver the functions and features of a traditional desktop application online. The interface is generated locally by your web browser. (1\

1.3.2An type of information system that gathers, analyses and presents information for the management, operations and planning levels of an organi ation. This help to make decisions about problems that may be rapidly changing.

1.3.3Downloaded software that bombards the user with advertisements (1\

1.3.4A remotely controlled network of zombie computers (1\

1.3.5ype of memory that stores the BIOS settings (1\

1.3.6Testing the accuracy of captured data by checking it against the source of the data (1\

1.3.7Someone who gains unauthorised access to data in order to steal data or someone who makes unauthorised changes to data (1\

1.3.8Specialised hardware and software designed to be used at till points (1\

1.3.9mail sent to people that advertise products that were not requested (1\ TOTAL SECTION A:

2.1omputer ve modular designed motherboard

2.1.1Give ONE advantage of a modular designed motherboard (1\

2.1.2Name ONE component/device that could be plugged into any of the ports in the rear of a standard desktop computer (1\

2.1.3What is the purpose of RAM? (1\

2.1.4Explain what CPU cache memory is and how it impacts the processing speed

2.1.5Explain the concept of multiprocessing (2\

2.2The younger generation of computer users often prefer to use mobile devices rather than desktop computer

2.2.1Except for mobility, give TWO other reasons why mobile devices may be preferred desktop computers. (2\

2.2.2State TWO factors that limit the use of mobile devices.

2.2.3Give TWO reasons for using an SSD instead of a conventional hard drive in a mobile device. (2\

2.3The use cloud applications such as Google Docs as well as other types of Software as a Service ( SaaS is popular practice nowadays

2.3.1What is a cloud application (1\

2.3Give TWO reasons for using SaaS instead of standard desktop software (2\

2.3State ONE disadvantage associated with the use of cloud computing. (1\

2.3.4Cloud computing relies on virtualisation technologies. State TWO ways in which virtualisation techniques are used by companies that offer cloud services. (2\

2.4The library at school use an online digital media repository.

2.4.1What is online digital media repository

2.4Give TWO reasons for using a media repository. (2\

2.5The library at the school wants to implement a backup policy to backup their data Give ONE reason why an online backup service is recommended

3.1The computers in the cabled network are used by all staff members and the WLAN is used by clients

3.1.1Give ONE reason why a wireless network is more suitable for the clients

3.1.2Give ONE reason why all devices must have a unique IP address. (1\

3.1Give TWO possible reasons why clients using the WLAN could experience slow connection speeds sometimes

3.2The LAN in the adminis tration office uses a client server model and provides internet

3.2.1Name TWO services that can be provided by an ISP besides the connecti to the

3.2.2State TWO benefits of using an ADSL connection. (2\

3.2.3Explain the function of the switch as part of the LAN (2\ ter/ Firewall Server Fi 'Switch' Administration

3.2.4The LAN to be used by the administration staff use fibre optic cables (a\ What medium is used by fibre optic cables to transmit signals?

3.3It is a requirement that all computers in the LAN are thin clients and that a UPS be installed for the server.

3.3.1Explain what a thin client

3.3.2Give TWO reasons why the use of thin clients is often preferred (2\

3.3.3What is the purpose of a UPS? (1\

3.4Some staff members have access to the virtual private network (VPN\ of the

3.4.1Give ONE practical example of how the staff can benefit from ing the VPN.

3.4.2Name the technique that is used to maintain the privacy of information during transmission

3.4.3Give TWO possible reasons why a staff member may encounter problems trying to connect to the VPN. (2\

3.5The size of an service can range from very small to very large What is the term used to describe the capability of a system to handle a reduction or growth of its

Q4— Section header —

4.1library use a relational database to have a record books that have been borrowed

4.1.1Explain what a relational database is. (2\

4.1.2Explain why record locking is necessary when different staff members are working on the same table in the database. (2\

4.1.3Besides planning and creating a database, name TWO other tasks that a database administrator has to perform as part of his/her duties. (2\ The database the library has two tables tblStudents and

4.2.2What is the StudentNumber field in the tblBooksBorrowed table called in terms of the relationship between the tables? (1\

4.2.3A composite primary key is used in the tblBooksBorrowed table. What is meant by a composite primary key (1\

4.2.4Identify and motivate the specific relationship that exists between the tblStudents and the tblBooksBorrowed tables.

4.2Referential integrity was enforced when the relationship between the tables was created Why was this done? (2\ 10

4.2The extract of data below show s some of the records in the two tables (a\ Write a

Q5— Section header —

5.1Give a reason for the use of EACH of the following structures in a Delphi

5.1.1FormCreate event (1\

5.1.2WHILE loop instead of a FOR loop (1\

5.1.3Ord function (1\

5.2tudents can log in the university website or portal to access resources.

5.2.1Below is an incomplete class diagram for a n object class that was created to record access to website. StudentEntry

5.3The following segment of programming code used to generate a student code: Line Code 'A','E','I','O','U']\then sCode := sCode + sName[A]; inc(A, 1\ Until (sName[A] = ' '\ {space} ShowMessage(sCode\ Copy and complete the trace table below to determine the output of

Q6— Section header —

6.1An AUP document has been compiled for the library. One of the points listed in the document states that, where possible, electronic documents should be used instead of printed documents.

6.1.1What does the acronym AUP stand for? (1\

6.1.2Briefly explain the purpose of having an AUP. (2\

6.2Some of the e lectronic documents are stored i n an online storage facility to facilitate file syncing. Explain the concept of file syncing (2\

6.3The university employed a web designer to redesign the website.

6.3.1Name TWO skills that a web designer would need when creating a website. (2\

6.3.2Students can access the website from their mobile devices. State TWO factors that a web designer must take into consideration when designing websites to be accessible from mobile devices. (2\

6.4Some students watch videos on their electronic devices as part of research projects. The videos are saved with metadata on an SSD.

6.4.1What is metadata (1\

6.4.2Suggest a suitable format for the compression of videos. (1\

6.5Schedules for short course lectures and webinars are displayed on the website.

6.5.1What is a webinar (1\

6.5.2How can the students remain informed of changes in the schedules without visiting the website? (1\ 15

6.6Some students use open source operating systems such as Linux, while others use proprietary system such as Microsoft Windows 10.

6.6.1State THREE functions of an operating system. (3\

6.6.2Give ONE reason for using a proprietary operating system rather than an open source operating system. (1\

6.7The library can use RFID tags embedded in books and RFID scanners at library exits and return points. Stock take (audits\ in a library can be facilitated by the use of mobile RFID rack readers enabling

6.7.1Write out the abbreviation RFID (1\

6.7.2Explain the difference between a passive RFID tag and an active RFID tag (3\

6.7.3The use of RFID student cards eliminates the need to type in a student number. The card is scanned using an RFID reader. Give TWO reasons why manual data input (e.g. person at a keyboard entering data\ is one of the least

6.8Although e mail is one of the most popular uses of the internet , users are often frustrated by the lack of netiquette. What is netiquette ? Give an example as part of your answer. (2\

6.9ICT has revolutionised the way in which people use social media to communicate. State ONE way in which social networking can impact negatively on cultures around the world. (1\

6.10University staff want to be sure that information sent over the network will be safe and secure.

6.10.1Public key encryption will be used to secure the data. (a\ (b\ Explain what the term encryption means. Explain how public key encryption works.

6.10.2A yellow lock is displayed on the URL bar when the user opens the university's website. (a\ What other visual indication is displayed that indicates that the website is secure besides the yellow lock

6.10.3Staff members are often warned against social engineering. (a\ (b\ Explain what social engineering is. What is a consequence of

6.11Green computing has become a focal point in the ICT field.

6.11.1Define the term green computing (1\

6.11.2

Topics Identified

Word ProcessingDatabasesProgrammingNetworkingHardware

Mark Allocation

Total150 marks

Paper information

SubjectInformation Technology

Year2018

SessionMay-June

TypePast Paper

PaperPaper 2

LanguageEnglish

Pages17

Downloads6

Examination context

Decade2010s

Years ago8y

Season—

Start day—

Exam period—

Days since exam—

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