# Information Technology Grade 11 P2 2020 Memo (Eng) > Grade 11 Information Technology Paper 2 memorandum from the National Exemplar November Exam 2020 (English), 13 pages. 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Layout, diagrams and tables may not survive extraction. ### Page 1 NATIONAL SENIOR CERTIFICATE GRADE 11 NOVEMBER 2020 INFORMATION TECHNOLOGY P 2 MARKING GUIDELINE (EXEMPLAR) MARKS: 150 This marking guideline consists of 13 pages. ### Page 2 2 INFORMATION TECHNOLOGY P2 (EC/NOVEMBER 2020) SECTION A: SHORT QUESTIONS QUESTION 1 1.1 1.1.1 B – (Low-level programming language) (1) 1.1.2 A – (0) (1) 1.1.3 A – (Process) (1) 1.1.4 B – (Data verification) (1) 1.1.5 C – (_Discount) (1) 1.1.6 B – (Data maintenance) (1) 1.1.7 B – (Modulation and Demodulation) (1) 1.1.8 C – (Machine code) (1) 1.1.9 A – (Acceptable Usage Policy) (1) 1.1.10 B – (Office automation) (1) 1.2 1.2.1 Data redundancy  (1) 1.2.2 Telecommuting  (1) 1.2.3 Anomaly/Anomalies  (1) 1.2.4 Constant  (1) 1.2.5 Jail breaking  (1) TOTAL SECTION A: 15 Copyright reserved Please turn over ### Page 3 (EC/NOVEMBER 2020) INFORMATION TECHNOLOGY P2 3 SECTION B: SYSTEM TECHNOLOGIES QUESTION 2 2.1 2.1.1 Dual Inline Memory Module / DIMM  (1) 2.1.2 Volatile memory  (1) 2.1.3 DIMM slots/RAM slots  (1) 2.1.4 32bit operating system can only see and use 4GB of memory.  (1) 2.1.5 Any ONE:   Loads data and instructions (programs or applications) before the CPU can work with them.  Temporarily stores data and instructions (programs or applications) before the CPU can work with them. (1) 2.2 Any ONE:  Spec A  Windows 10 Pro – Operation system (OS)  Kaspersky – Utility software Spec B  Windows 10 Home – Operating system (OS)  ESET – Utility software (2) 2.3 2.3.1 8192 GB / 8GB  (1) 2.3.2 Double Data Rate  (1) 2.4 2.4.1 Intel CoreTM i7 9750H  (1) 2.4.2 Machine cycle  (1) 2.4.3  Fetching the instructions and data from memory (RAM)   Decoding the instructions   Executing the instructions   Transferring data back to the memory  (4) 2.5 2.5.1  Built-in video/integrated adapter is used when doing normal tasks  because it uses much less power and battery life.  Video card is used by programs that require good graphics.  (2) 2.5.2  Intel RX 5700XT 8GB   NVDIA GTX 1660 4GB  (2) Copyright reserved Please turn over ### Page 4 4 INFORMATION TECHNOLOGY P2 (EC/NOVEMBER 2020) 2.6  Compiler  takes the entire program and translates into machine language.   Interpreter  runs one line of a program and the current line is converted into machine language.  (4) 2.7 2.7.1 HDMI is an audio/video interface for transferring uncompressed video data,  compressed or uncompressed digital audio from HDMI device to a computer monitor, video projector, digital TV or digital audio device.  (2) 2.7.2 High Definition Multimedia Interface  (1) TOTAL SECTION B: 26 Copyright reserved Please turn over ### Page 5 (EC/NOVEMBER 2020) INFORMATION TECHNOLOGY P2 5 SECTION C: COMMUNICATION AND NETWORK TECHNOLOGIES QUESTION 3 3.1 3.1.1 Computer network is a collection of computers or other computing devices connected by some sort of communication medium/channel to allow users to share software, hardware, data and information.  (1) 3.1.2 Any TWO:   Fast and efficient communication  Sharing of hardware resources  Centralisation of data  Transfer of files  Leisure  Increased control and security  Flexible access (2) 3.1.3 Global Area Network (GAN) / World Wide Web (WWW)  (1) 3.2 3.2.1 (a) Wi-Fi  NIC (1) (b) 3G/4G/LTE/5G  (1) 3.2.2 (a) Wi-Fi  NIC (1) (b) Ethernet  port (1) 3.3 Wi-Fi access point sends and receives radio signals and allows devices to connect to a wired network wirelessly.  (1) 3.3.1 Base station  (1) 3.3.2  Hotspot is an area, usually in a public space (such as airport, hotel lobby and restaurant etc), where people may be granted Wi-Fi access from access point to connect wirelessly to the Internet via a wired network.   Bandwidth refers to the total amount of data that can be transferred from one point to another in a given period of time.  (2) 3.4 3.4.1 Any ONE:   Skype  Google voice  Vonage  ooVoo  Viber  Facebook Messenger  Jitsi  MicoSIP  8*8  EkigaZoiPer (1) Copyright reserved Please turn over ### Page 6 6 INFORMATION TECHNOLOGY P2 (EC/NOVEMBER 2020) 3.4.2 Any TWO:   The call quality may be poor if you have a slow Internet connection.  Your data cap can be used up quickly, especially when using video.  You need to purchase credits to call telephones that are not on the Internet.  You need to have an Internet connection and both users need to use the same software. (2) 3.5 3.5.1  Lossy compression compresses data by losing some of the data / compresses data by sacrificing some insignificant or virtually indetectable portion of the data.   Lossless compression compresses data without losing any portion of the data.  (2) 3.5.2 Lossy compression (Any ONE):   Audio  Video  Still images Lossless compression (Any ONE):   Documents  Spreadsheet  Databases (2) 3.6 3.6.1  Fixed location Internet access  refers to high speed data transmission to homes and businesses using cabled technology.   Mobile Internet access  refers to the ability to connect to the Internet using wireless networks such as cellular phone network.  (4) 3.6.2 Fixed Location Internet Access  ADSL  Mobile Internet access (Any ONE):   3G  4G/LTE  5G (2) TOTAL SECTION C: 25 Copyright reserved Please turn over ### Page 7 (EC/NOVEMBER 2020) INFORMATION TECHNOLOGY P2 7 SECTION D: DATA AND INFORMATION MANAGEMENT QUESTION 4 4.1 4.1.1 DBMS is a software that allows you to work with electronic databases.  (1) 4.1.2 Any THREE:   Creates database  Edits the structure of the database  Adds, edits and deletes data in the database  Queries or searches the data in the database  Processes the data in the database to extract information (3) 4.1.3 Bigtable  (1) 4.2 4.2.1 Any THREE:   Format check  Data type check  Range check  Presence check  Check digit (3) 4.2.2  Accurate and without errors   Verifiable   Timely information  (3) 4.3 4.3.1 tblStudent tblStudentTransactions 1 PK  StudentID PK  TransactionID ∞/m  FirstName FK  StudentID LastName PostDate Address Amount City Description PostalCode DateAdmitted Major Photo (5) 4.3.2 Composite keys refer to the combination of more than one field to uniquely identify a record.  Primary key is a field which identifies each record with a unique value.  (2) Copyright reserved Please turn over ### Page 8 8 INFORMATION TECHNOLOGY P2 (EC/NOVEMBER 2020) 4.4 Any THREE:   Manages and maintains databases  Controls the allocation and supervision of users of the database and their access rights  Performs routine maintenance on the database  Ensures the DB software is updated regularly  Implementing a good backup policy  Installing and configuring software on additional servers  Ensuring systems have enough storage and memory (3) TOTAL SECTION D: 21 Copyright reserved Please turn over ### Page 9 (EC/NOVEMBER 2020) INFORMATION TECHNOLOGY P2 9 SECTION E: SOLUTION DEVELOPMENT QUESTION 5 5.1 5.1.1 American Standard Code for Information Interchange / ASCII  (1) 5.1.2 CSV/Comma elimited  (1) 5.1.3 (a) AssignFile(txtStock, ‘Goods.txt) – Links file variable (txtStock) to the file on the disk (Goods.txt).  (1) (b) Append(txtStock) – opens an existing file to write to,  the file pointer is positioned at the end of the file and the new data is added to the end of the file.  (2) 5.2 Step-and-Watch  (1) 5.3 Data persistence refers to the ability of data to be retrieved and used more than once after it has been saved.  (1) 5.4 5.4.1 Format function is used to convert the real values to strings of equal length,  with leading spaces added. (1) 5.4.2 (a)  % – this indicates that the text which follows is formatting instructions and not normal text   10 – shows that the final string must contain 10 characters   2 – shows that the final string must contain 2 decimal points/ values   f – shows that the value being passed in the second parameter is a floating-point value   rWeight – holds the information that needs to be converted into a formatted string  (5) (b) m,  monetary  (2) 5.5  Selection sort is a sorting algorithm that uses two For loops to sort a list, by moving the smallest or largest element to the top of the list.   Bubble sort is a sorting algorithm that bubbles the smallest or largest element to the bottom of the list by using Boolean flag and a For loop.  (2) Copyright reserved Please turn over ### Page 10 10 INFORMATION TECHNOLOGY P2 (EC/NOVEMBER 2020) 5.6 Line No Value1 Value2 Value3 Value4 Screen Output 1 10  2 5 3 7 4 10.6  5 2 6 5 7 5 8 2 9 10  10 10.6  (5) 5.7  Readln will read a line of text from the file buffer/variable text file and place it into the string variable.   Writeln will write a line of text to the buffer area/variable text file  and add an EOLn character to the line of text. (2) TOTAL SECTION D: 24 Copyright reserved Please turn over ### Page 11 (EC/NOVEMBER 2020) INFORMATION TECHNOLOGY P2 11 SECTION F: INTEGRATED SCENARIO QUESTION 6 6.1 6.1.1 Any THREE examples:   Better record keeping or data storage and management  Better communication and virtual presence  Automation  Artificial Intelligence and sensor driven computing (3) 6.1.2 Any TWO:   Musicians now record an album with greater ease and lower cost than ever before.  Well-known musicians have released albums created entirely on iPads.  Musicians distribute their work directly without the aid of a studio.  IT gives them many ways to market themselves.  Customers can buy/ download music via Internet. (2) 6.1.3  Workplace – is wherever work takes place/any place where people work.   Employment practices – refer to how people are employed,  for how long, how they are paid, where and when they are expected to work. (2) 6.1.4 Outsourcing occurs when contracting a specialist business to run aspects of your own business that are essential for proper functioning,  but that do not fall within your area of expertise.  (2) 6.2 6.2.1 Settings in server operating system  (1) 6.2.2 Any THREE aspects:   A code of conduct educating users and governing their behaviour when using the network and the Internet.  Details on when and where portable storage devices such as flash disks and portable media players may be used.  Details of restrictions about installing any hardware or software.  Procedures to follow if users become the victims of identity theft, malware, cyber bullying and/or cyber stalking.  Hints on how to avoid plagiarism and breaking copyright law.  Clear consequences of violating conditions spelt out in the AUP. (3) 6.2.3 Restrictions  (1) Copyright reserved Please turn over ### Page 12 12 INFORMATION TECHNOLOGY P2 (EC/NOVEMBER 2020) 6.3 6.3.1 Any THREE:   Better communication  More efficient administration  Census and statistics  Elections  Weather services and predictions (3) 6.3.2 Any THREE:   Insufficient knowledge of and exposure to ICT.  ICT exposes them to risks that they cannot manage.  Abuse of ICT by criminal elements through activities such as hacking, cybercrime.  Malware increases people’s fear of ICT and limits implementation and adoption of ICT projects. (3) 6.4 6.4.1 Globalisation is the integration of economies, cultures, ideas and groups across the globe  driven by a world-wide network of communication, transport, trade and immigration.  OR Globalisation is a process of connection, interaction and integration among people, companies, and governments.  (2) 6.4.2 Any THREE:   An efficient market where there is an equilibrium between what buyers are willing to pay for a good or service and what sellers are willing to sell a good or service for.  Increased competition between companies which improves the service and quality of goods or services delivered to the consumers.  Security as countries’ economies are intertwined and dependent on each other.  Wealth equality throughout the world as poorer nations have more job opportunities. (3) 6.4.3  Agricultural sector:  AI-powered machine vision systems can measure crop populations and detect weeds or plant pests and use robotic sprayers to precisely apply herbicides.   Healthcare sector:  Precision medicine helps doctors analyse a patient’s genome sequence, medical history and lifestyle, making a diagnosis more reliable.  (4) 6.5 6.5.1 Any THREE:   Accidentally deleting files or reformatting a disk.  Not ensuring that regular backups are made.  Entering incorrect data in a program.  Losing or misplacing portable storage devices.  Allowing other unauthorised users to get access to data by not following security principles (such as having secure password and changing it on a regular basis.) (3) Copyright reserved Please turn over ### Page 13 (EC/NOVEMBER 2020) INFORMATION TECHNOLOGY P2 13 6.5.2 Any THREE:   You need to back up data.  Automate or schedule the running of the backup software so that you do not forget to run the backup process.  Back up your files on an external storage device such as portable hard drive.  Keep the backups off-site in case of theft or a disaster such as fire.  Perform housekeeping so that you do not have multiple copies or versions of the same files on your computer.  Consider archiving large files that you seldom use by moving them off your computer to an external hard drive.  Check from time to time that the backups are actually working by restoring some of the files from backups. 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