Information Technology Grade 12 Paper 2 GAU Prelim 2020 Memo

Downloaded from hlayiso.com INFORMATION TECHNOLOGY PAPER 2 GRADE 12 MEMO September 2020 TIME: 3 HOURS MARKS:150 This paper consists of 6 questions and 14 pages

Downloaded from hlayiso.com IT P2 2 SECTION A: SHORT QUESTIONS QUESTION 1 1.1 1.1.1 Resolution  (1) 1.1.2 Pharming  (1) 1.1.3 Screen Reader  (1) 1.1.4 Grid computing  (1) 1.1.5 Malware  (1) 1.1.6 HTTPS  (1) 1.1.7 NIC  (1) 1.1.8 Shaping/network tuning  (1) 1.1.9 VR (virtual reality)  (1) 1.1.10 Bluetooth  (1) 1.2 1.2.1 True  (1) 1.2.2 True  (1) 1.2.3 False, Hotspot  (1) 1.2.4 True  (1) 1.2.5 False, VGA/DVI/HDMI/display port  (1) TOTAL SECTION A: [15] Please turn over

Downloaded from hlayiso.com IT P2 3 SECTION B: SYSTEMS TECHNOLOGIES QUESTION 2 2.1  Executing the instruction   Transferring data back to memory  (2) 2.2 2.2.1 GPU lessen the load on CPU by executing all graphic related processing letting the CPU focus on other tasks improving PC performance. CONCEPT (any ONE ):  the GPU have its own CPU – dedicated to create graphics / screen output  makes the CPU available to perform other needed tasks and so improves the PC performance. (1) 2.2.2 It is a small, fast, temporary form of storage that provides high-speed data access to a processor. It stores frequently used computer programs, applications and data. It is the fastest memory in a computer, typically integrated onto the motherboard and directly embedded in the processor or RAM. CONCEPTS:  DEF: fast memory   PERFORMANCE: stores frequently used computer programs, applications and data giving quick access.  (2) 2.2.3 Any TWO   ability of an operating system to allow programs to split themselves into multiple tasks (or 'threads')  that can be run at the same time (2) 2.3 2.3.1 Storage capacity / Small storage space  (1) 2.3.2 Any TWO   controls the hardware,  provides a user interface for users to interact with  manages the resources of the computer.  Utility programs adds functionality to your computer and helps your computer perform better. (2) 2.3.3 Linux  (1) 2.3.4 Any ONE   Using online / internet  From app stores (1) Please turn over

Downloaded from hlayiso.com IT P2 4 2.3.5  Yes, will be enough to run Windows and other apps / software   Minimum RAM requirements for Windows 10 is 1 gigabyte (GB) for 32-bit or 2 GB for 64-bit  (2) 2.4 2.4.1 Plug and Play (PnP) is the name given to the technology that automates the configuration process of a device before it can be used. This is how it works: The device identifies itself to the operating system. The operating system allocates the device an IRQ and an area of memory that it can use without conflicting with any other devices. The operating system then checks to see if it has driver software for the device. If it finds the driver, it loads it – otherwise it prompts the user to install the driver. CONCEPTS:  Automatically installs drivers without user action   OS looks for the driver and install it automatically  (2) 2.4.2 A device driver acts as a translator between the hardware device and the programs or operating systems.  (1) 2.5 Software as a Service  (1) 2.6 Virtual memory is the increase of the capacity of the RAM by creating a temporary or dedicated file on the hard disk drive. Virtual memory is a memory management capability of an operating system (OS) that uses hardware and software to allow a computer to compensate for physical memory shortages by temporarily transferring data from random access memory (RAM) to disk storage. CONCEPTS:  memory management capability of an operating system   increase of the capacity of the RAM by creating a temporary or dedicated file on the hard disk drive  (2) 2.7 2.7.1 Cloud computing is the using of remote servers/computer on the Internet to store, manage, and process data.  CONCEPTS:  Use of virtual resources   over the internet  (2) Please turn over

Downloaded from hlayiso.com IT P2 5 2.7.2 Any ONE   Company relies on the service provider to stay in business  Company relies on the service provider to secure their data (good security practices)  Company relies on the service provider to follow good back-up practices to prevent loss of data  Company relies on the service provider not to over sell their services  Need a reliable internet connection  Must pay “rent” for the use of the service (1) 2.7.3 It refers to the ability to increase or decrease the size and power needed The company can “rent” more or less resources needed or more resources can be made available during high usage or traffic.  (1) TOTAL SECTION B: [24] Please turn over

Downloaded from hlayiso.com IT P2 6 SECTION C: COMMUNICATIONS AND NETWORK TECHNOLOGIES QUESTION 3 3.1 3.1.1 Remote access refers to the technology that allows users to access a device or a network from an offsite location.  (1) 3.1.2 Any ONE   Enhanced security - have to login with correct credentials  Route all communication through this secure network  Share files – assessable from anywhere with connectivity (1) 3.1.3 Encryption translates data into another form, or code, so that only people with access to a secret key decryption key or password can read it CONCEPT:  Change to another form   Improves data security – must be decrypted with key or password  (2) 3.2 Any TWO   Improves communication  Ensure up-to-date information.  It is an inexpensive system / it increases cost efficiency / reduce capital cost.  Improve security (users cannot see other users' files) NOT RESOURCE SHARING – this includes: not storage/ processing / printer / internet (given in question) (2) 3.3 3.3.1 Star topology  (1) 3.3.2 A router is designed to connect multiple networks together. It can be used to connect the LAN with the Internet.  (1) 3.3.3 A switch is designed to connect computers within a network  (1) 3.4 3.4.1 VoIP  (1) 3.4.2 Convenience - can download the file and replay it at whatever time is convenient. You don't have to worry that your audience is busy offline - can download the file and replay it at whatever time is convenient.  (1) Please turn over

Downloaded from hlayiso.com IT P2 7 3.4.3 (a) Any TWO   People can work from anywhere with an internet connection  This means they don’t have to go in to the office  This means the workers are now in different geographical areas and can continue doing their jobs (2) (b) Any ONE Mobile device  Smart phone / Tablet / Phablet / Laptop / Netbook (1) 3.5 FTP (File Transfer Protocol) used when sending large files over a network.  (1) 3.6 3.6.1 A cyber-attack in which the perpetrator seeks to make a machine or network resource unavailable to its intended users by temporarily or indefinitely disrupting services of a host connected to the Internet. by overloading the website with requests  (2) 3.6.2 Any ONE   Access to (personal) information  Regulate how personal information is processed (1) 3.7 3.7.1 Any TWO   Clean keyboard and mouse  Sanitise your hands regular  Sanitise your working areas  Sanitise the input / power-on-button  Use of gloves  Using Zip lock plastic coverings over input devices (2) 3.7.2 Any ONE   Improved communication by holding of press conference  Create a website about the Corona, stats and prevention  Linking with other scientist around the world  Used ICT to track cases  Use to educate society on how to prevent the spread Covid-19.  Informing the public of the different regulations at each level of the lockdown  Mobile devices were used to support early testing and contact tracing.  Advanced ICTs were particularly useful in spreading key emergency information and helping to maintain extensive social distancing.  Updated information and testing results were published on national and local government websites. (1) 3.8 Irrelevant data is captured when you use cards for shopping / payments: e.g. credit card, loyalty card, government, toll road passes, cell phone  (1) TOTAL SECTION C: [22] Please turn over

Downloaded from hlayiso.com IT P2 8 SECTION D: DATA AND INFORMATION MANAGEMENT QUESTION 4 4.1 A unique identifier for each record. (1) 4.2 A database that contains tables, where a record in one table are linked to related records in another table. CONCEPTS:  more than one table   Data related to another table  (2) 4.3 4.3.1 Normalisation (1) 4.3.2 ClientsT has AdvertsTB b   (2) 4.4 4.4.1 Ensure that the client entered the correct data by for example checking all the information on the capture device and asking a person working at the business if this is correct.  (1) 4.4.2 Any ONE   Use a date picker field to capture the data.  Check the digits and characters using a function  Any one answer that can check if the content is correct (1) 4.4.3 status update,  likes, videos or picture the user upload.  (2) 4.5 4.5.1 Any example of insert a new record Person must have a cell number to be inserted. (1) 4.5.2 Record to be updated in multiple places, Updating the telephone number of Samantha Andrews (1) 4.5.3 Delete the phone number of any of the records, most likely all the data will be deleted. (1) 4.5.4 Repetition of names and surnames (1) 4.6 Any TWO:   Add a number  add a special character  Do not use his name (2) Please turn over

Downloaded from hlayiso.com IT P2 9 4.7 4.7.1 It is the unauthorised use of personal information. (1) 4.7.2 Any TWO   Who made the changes,  What the user changed and  When they made the changes. (2) 4.7.3 To find individuals that can be a danger to society , or any relevant answer. (1) TOTAL SECTION D: [20] Please turn over

Downloaded from hlayiso.com IT P2 10 SECTION E: SOLUTION DEVELOPMENT QUESTION 5 5.1 5.1.1 Attributes or variables that belongs to the class  (fEmpID, fSurname, fName, fDateBirth, fSection) (1) 5.1.2 That access and manipulation of the method is restricted to the class, and the programmer does not want other code to be able to manipulate the methods outside the class.  (1) 5.1.3 Using other public methods.  (1) 5.1.4 It is a procedure that update the state of the object (1) 5.1.5 Cannot change as the attribute is a constant (1) 5.1.6 Overloading (1) 5.1.7 fsurname := sname;  fname := sname; (2) 5.1.8 display all the values of the properties/fields of the class (1) 5.1.9 result := fEmpID;  OR getEmpID := fempID; (1) 5.2 5.2.1 Values received from the calling statement (1) 5.2.2 oneObject (1) 5.2.3 Surname must contain at least 8 characters Name must contain A – Z or a-z (2) 5.2.4 While loop will stop when one of the criteria becomes true.  For do loop will continue and finish even if one of the criteria becomes true.  (2) Please turn over

Downloaded from hlayiso.com IT P2 11 5.3 iValue1 iValue2 iAnswer sOutput iValue1 < 3 2 1 1 2 True 1 2 3 1 1 2 3 True 2 3 5 11235  True 3 5 False 16 / 2 = 8 (8) TOTAL SECTION E: [24] Please turn over

Downloaded from hlayiso.com IT P2 12 SECTION F: INTEGRATED SCENARIO QUESTION 6 6.1 6.1.1 It is the separation which arises between groups of people/countries that do not have access to technology against groups that have access. (2) 6.1.2 Differences in levels of training – the better individuals are qualified, the greater the chance that they will make use of technology.  Age difference – older staff who have not had formal training and will tend to not use technology (2) 6.2 6.2.1 Any ONE  Onedrive, Gdrive, Dropbox, Google classroom (1) 6.2.2 The documents may be too large when sending it as an attachment with an e-mail (2) 6.2.3 Downloading the homework is much faster than uploading it.  More data is downloaded than is uploaded.  (2) 6.2.4 Any TWO   TCP/IP  Router  MAC  Ethernet-ID (2) 6.3 6.3.1 Dataware house  (1) 6.3.2 Datamining  (1) 6.3.3 Data from cell phones can be monitored of people infected with the virus and determine where the person was and with whom he had contact.  (2) 6.3.4 Resources of different computers can be shared and used simultaneously to search for a vaccination for COVID-19  The problem is broken down into components that different computers can work with.  OR With the use of virtualisation, the company that provides cloud service can split resources of very powerful machines or combine resources of many machines to provide a single virtual machine needed. (2) Please turn over

Downloaded from hlayiso.com IT P2 13 6.4 6.4.1 Username and password  (2) 6.4.2 Teamviewer and Remote desktop connection  (2) 6.5 6.5.1 Criminals who get control of computers without the owner knowing. Computers are then controlled over a distance and then use the computers resources to send spam, malware, and DDOS attacks.  (2) 6.5.2 Criminals who gain access to someone else's Internet connection  and use the Internet connection without paying for it.  (2) 6.6 6.6.1 This is any person who writes a computer virus program.  (1) 6.6.2 This refers to any method used by legal and illegal users to get past the security  of the computer to access  the computer system. (2) 6.6.3 Any TWO   Loss of income  Expenses incurred in limiting future attacks  Loss of reputation  Corrupt files because of the virus  Negative credit rating due to identity theft (2) 6.6.4 Any TWO   Use a firewall  Keep software updated  Keep track of the latest types of computer crime  Use common sense  Follow a good password policy (2) 6.7 6.7.1 Hoax (1) 6.7.2 The sending of false information can cause people to become negative, rebellious and not work together.  People can become scared because they are in isolation at their homes  Any correct answer related to lockdown (2) 6.8 Stable supporting infrastructure  This cost and availability of equipment and software.  (2) Please turn over

Downloaded from hlayiso.com IT P2 14 6.9 6.9.1 Any TWO  Faster download, low latency, more reliability, more network capacity, increased availability and a more uniform user experience to more users (2) 6.9.2 Radiation  (1) 6.10 6.10.1 Any TWO   Navigation is easier  Application has one priority  With an app you are already where you want to be and don’t have to use bookmarks or a URL  App uses less data  App works in the background.  Apps synchronize and can be used on other devices Apps uses extra sensors of the mobile device. (2) 6.10.2 File syncing makes it possible that the latest data stored online is synchronized with another device so you can work further.  (2) 6.10.3 Any ONE   The page's size must automatically adjust to the screen size of the mobile device  The page is formatted differently to adjust to the display of the mobile device (1) TOTAL SECTION F: [45] GRAND TOTAL: [150]