Information Technology Grade 11 P2 2016 Memo

Downloaded from hlayiso.com education Department: Education PROVINCE OF KWAZULU-NATAL GREENBURY SECONDAR SCHOOL la > INFORMATION TECHNOLOGY P2 GRADE 11 DATE OF EXAM: 21 JUNE 2016 y, MARKS: 120 TIME: 2% hours Copyright reserved EXAMINER(S): AFG/BG/NG/JS [Pinetown] MODERATOR(S): AJP/SN [Illembe] This question paper consists of 10 pages Please turn over | F \ |

Downloaded from hlayiso.com Information Technology Gr 14 - P2 June 2016 Nao QUESTION 1 — MULTIPLE CHOICE 1.4 A public wireless network that provides Internet access to mobile computers and handheld devices is referred to as a(n) ... A Cybercafé B Kiosk Cc Hot Spot D ISP 1.2 Fragmentation occurs when... you partition your hard drive the hard drive spins too fast and causes the computer to break into pieces files are broken up and scattered all over the screen and memory the file system cannot allocate enough contiguous space to store a file DOF > 1.3 Which of the following refers to an encryption technology used to authenticate the identity of the sender of an e-mail message? Digital certificate Digital divide Digital signature Digital handshake vaOO> 1.4. Which of the following is NOT associated with green computing? A Using Energy Star compliant hardware B The ‘Paperless office’ c Using refillable toner cartridges D Replacing computer equipment on a four-yearly basis 1.5 Convergence refers to ... technology that is always on. technology that does not need to be tethered to wired connections. functionalities of many devices built into one. the ability of mobile devices to connect to one another. UaNFTY 1.6 The... translates an entire program into machine language before execution. A Compiler B Interpreter Co Fransbator D operating system , Copyright reserved Please turn over

C) Downloaded from hlayiso.com Information Technology Gr 11 - P2 3 June 2016 NSC 1.7 Which ONE of the following statements is NOT true? A An interactive web page might contain code that can be executed. B Flash-applets might be part of a static web page. Cc A static web page can be interactive. D Facebook is a dynamic website, 1.8 An organisation's private network environment consisting of documents and resources relating to the organisation's business is known as their... A Ethernet. B extranet. c intranet. D Internet, 1.9 The BIOS is responsible for ... (i) primary memory management. (ii) controlling hardware. (iii) all logical processing in a computer. (iv) locating and loading the operating system. A (i) and (ii) B (ii) and (iv) c {ifi) and (iv) D (i) and (iii) 1.10 is a type of control that serves as an ‘on/off’ or ‘toggle’ fashion. Selecting it again will clear the option. Combo box Check box Drop down list Radio button VaA DY 10x2 = 20 Copyright reserved Please turn over

Downloaded from hlayiso.com Information Technology Gr 11 - P2 4 June 2016 NSC Scenario: The Ex-students Society of your school has raised a large sum of money and has offered to upgrade the school library. The funds will be used to computerise the library, employ a full-time librarian and hire technicians as an when required, Question 2 - Hardware and Software One of the members of the Ex-students Society provides the adverts below outlining specifications of two different computers. He asks the school to consider acquiring and using these computers in the library, Advert 1 Advert 2 Phoenix ATX Case 450 Watt PSU 4005U 1.7GHZ_processor H81 DDR3 Motherboard 4GB RAM Intel Core i5 4460 3.2Ghz CPU 1TB Hard Drive SSD 4GB DDR3 1600Mhz Windows 10 1TB Hard Drive HDD 24x CDRW Drive 24x DVDRW Drive 12-month warranty 18.5” LCD Monitor R8499.00 Microsoft Windows 10 R8999.00 2.1. When analysing the adverts above, the term modular design was mentioned. 2.1.1 Explain the term modular design. (2) 2.1.2 Give TWO (2) advantages of a modular designed PC. (2) 2.2 Advert 1 comes with a DVDRW and Advert 2 with a CDRW. Differentiate between a DVDRW and CDRW. (2) 2.3 The ex-students notice that Advert 1 has a HDD hard drive while Advert 2 has a SSD hard drive. Discuss the difference between the two hard drives. (2) 2.4 One of the ex-students has come across the term malware. 2.4.1 Name and explain THREE general classes of malware. (6) Copyright reserved Please turn over

Information Technology Gr 11 ~ P2 2.5 2.6 2.7 Downloaded from hlayiso.com uso 2.4.2. Name THREE ways in which you can reduce malware infection. With the increase in load shedding, the ex-students are worried that the devices will be damaged if they are not properly shut down. Name one device that can be used to prevent the damage of these devices. Human error often leads to data loss. 2.6.1 List TWO ways in which human error can lead data loss. 2.6.2 Explain THREE ways in which human error can be reduced. The computers will be connected to the Internet. State TWO precautions when online. Total = Question 3 - Networks (communication technology) 3.1 3.2 3.3 3.4 June 2016 (1) (2) (3) The computers in the library will be networked. This network will form an integral part of the library. Give a concise definition of a computer network. ANIC is vital when connecting computers in a network. 3.2.1 Briefly explain the role performed by a NIC in terms of a network. 3.2.2 How does a NIC for wireless network differ from a NIC for a cabled network? 3.2.3. The ex-students notice that NIC for the PC’s are advertised in 1OMbps/ 100Mbs and 1000Mbps. Explain what these specifications refer to and why there seem to be three different specifications for the same item. The ex-students are worried that by implementing a cabled network, the cables lying around may pose a safety problem. Besides cabling suggest another way in which the PC’s can be linked together? A member of the ex-students society wants some clarity on WiFi and WiMAX Copyright reserved Please turn over (1) (1) (2) (2) (1)

Downloaded from hlayiso.com Information Technology Gr 11 — P2 June 2016 NSC 3.4,1 What do WiFi and WiMax have in common? 3.4.2. What are the main two differences between theses technologies? 3.5 All types of networks have a form of protocol. 3.5.1 What is a network protocol? 3.5.2 Explain what the following protocols are: SMPT, HTTP and VOIP. 3.5.3 Differentiate between HTTP and HTTPS. 3.5.4 Name the communications protocol used to transfer large files between computers via networks such as the Internet. 3.6 The ex-students have notice that most cell phones are classified as smartphones. 3.6.1 Explain the difference between a smartphone and a normal cell phone. 3.6.2. Name TWO types of operating systems used by smart phones. 3.7. The ex-students would tike to set up the librarian’s phone to receive and send emails. Differentiate between “Notifications” and “Push Technology”. 3.8 What is Blogging and Microblogging? Total = Question 4 Solution and application development 4.1 The ex-students did some research into the cost of the Intel “i-range” computers and found that they fell into one of three price categories according to the following table: PRICE RANGE PROCESSOR R3000 ~ R5000 13 R5001 - R8000 15 R8001 - R12000 7 A programmer created a program in which a budget amount for a single machine can be entered and the program outputs the best processor that can be purchased for that amount. If the budget amount entered is below R3000 a message “you cannot afford an i-processor” is displayed. Write a CASE STATEMENT algorithm segment that would provide a solution to the above problem. 4.2. Network consultants will be hired to offer assistance to learners and staff who will use the centre. They will be paid at a rate of R100 per hour payable at the end of the week based on the total number of hours worked from Monday to Friday. The wage is worked out based on the following algorithm: Copyright reserved Please turn over (2) (2) (5)

{) Downloaded from hlayiso.com Information Technology Gr 11 — P2 7 June 2016 NSC 1 input the name of the consultant 2 Pay € 0 3 Loop for each of the five days 4 Total € 0 5 Number © Input the number of hours worked 6 Total © Total + Number 7 Pay © Number * 100 8 End loop 9 Display the name of the consultant, number of hours 4.2.1 b) 4.2.2 a) b) worked and the wage due Inline 5 the user is required to enter a number which is saved into the integer variable Number. The user enters the number -3 (negative three) when prompted to enter the number of hours worked. What will the impact of this input be on the execution of the program based on this algorithm? Explain your answer. (2) The user types in the phrase ‘FIVE HOURS' when prompted to enter the number of hours worked. What type of error (Syntax/Runtime) will occur? When the program is executed and the user enters a valid number when prompted to enter the number of hours worked, the payments are calculated and displayed incorrectly. This is the result of TWO logical errors in the given algorithm. Explain, in general, what a logical error is. (2) Explain how to correct EACH of the TWO logical errors in the given algorithm. In your answer make use of the line numbers to refer to the statements in the algorithm. 4.3 Calculations based on computer specifications and salaries for employees were an essential part of budget discussion, Arrays were suggested as a way of storing the data for manipulation prog rammatically. Copyright reserved Please turn over

Downloaded from hlayiso.com Information Technology Gr 11 — P2 8 June 2016 NSC In each of the following determine whether an array is necessary or not. Simply write the numbers 4.3.1 to 4.3.3 and “Yes” or “No” next to each. 43.1 A list of salaries is entered. The average salary is required. (1) 4.3.2 A list of prices is entered. We need to know how many prices are above R8000. (1) 4.3.3 A list of salaries is entered. We need the number of salaries that are above the average salary. (1) 4.4 Consider the foliowing GUI that captures a test mark and the test total from TWO TEdit boxes. The GUI has: e abutton “Calculate” which determines the percentage obtained in the test ¢ abutton “Clear” which clears the entries in the edit boxes. « Abutton “Close” which closes/exits the program ( ¢ A label to display the percentage determined in the “Calculate” button Test Percentage Calqulator | Erte test data Taat Total TASK OBJECT EVENT Use the GUI to complete the following TOE chart. Write down from (a) to (f) in your answer sheet and write down the relevant object or event. Where applicable you may create your own variable names for objects. Copyright reserved Please turn over

a Downloaded from hlayiso.com Information Technology Gr 11 - P2 9 June 2016 NSC Input Get TestMark (a) Get TestTotal edtTestTotal Processing and : : Output Calculate the average for the test (c) Button click Display the calculated Iblourput «) average Clear the input and (e) (f) output controls (6) Close the program btnExit Button click 45 Line 1 sum < 0 2 num © input an integer 3 loopCounter © 1 4 while loopCounter < num 5 Begin loop 6 if num mod loopCounter = 0 7 then sum © sum + loopCounter 8 end loop 9 display sum The above algorithm is designed to find the sum of all the even numbers up to an integer value entered by the user. There are two errors in the given algorithm. Rewrite the above algorithm correcting the errors. Eg. If the value of num is entered as 10 then the output will be 30 obtained as follows 24+4+6+8+10. (4) Total= 25 QUESTIONS INTEGRATED SCENARIO The librarian has some computer knowledge but require answers to a few questions. Copyright reserved Please turn over

Downloaded from hlayiso.com Information Technology Gr 11 - P2 10 5.1 5.2 5.3 5.4 5.5 5.6 5.7 5.8 5.9 5.10 5.14 Copyright reserved NSC She knows that one of the essential functions of an operating system is process management. Explain what process management is in terms of the operating system. Virtualisation is creating an entity that only exists in software. Give TWO examples of virtualisation software. The library has received a sponsorship of separated video cards. 5.3.1 Which expansion slot is a video card plugged into? 5.3.2 Discuss the processing benefit a separate video card would have, besides producing better quality images (output) that are displayed on your monitor. The librarian wants to use an electronic system to keep track of stock and the borrowing of books by learners. This will require that all the stock and learners details need to be captured into a database. Give TWO possible consequences of the library losing its data if the data was not backed up. An electronic system is exposed to many threats. Explain how a worm can pose a threat to your data. Explain the implications if your computer is infected by spyware. State TWO ways in which the librarian can make mistakes that will result in the loss of data. List TWO ways in which hardware related issues can lead to a loss of data. Explain the difference between a full backup and an incremental backup. Data captured into a computer system need to be vatidated and verified. Differentiate between data validation and data verification. When recording the details of books, two fields [the category (fiction, non-fiction) and the subject classification [English, Afrikaans, History, General Knowledge, ..] needs to be captured. State TWO GUI components that can help reduce the need to type details. Give TWO different types of checks that programmers should include in their programs when testing data entered by a user, Total = ” June 2016 (2) (2) (2) (2) (2) (2) 25 (2) Please turn over

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device that can prevent the damage to these devices. UPS (uninterrupted power supply} Give two ways of how human error can lead to loss of data Accidently deleting files, formatting fiash drives, not meking regular backups, entering incorrect data in a program. Any two acceptable enswers”’” ©) communicate with one another over a wider area than WiFi. ~ WIMAX is also more secure than WiFi.” All types of networks have some form of protocol. What is a network protocol? fea) Set of rules for encoding and decoding date for transmission across a 26.2 Explain 3 ways in which human error can be reduced. 8) Automate processes by scheduling updates.” Set string passwords” Implement access rights.” network, 35.2 Explain whet the following protocols are: SMPT, HTTP and VOIP SMPT: Protocol used for sending mai” Downloaded from hlayiso.com Any 3 suitable ways. HTTP: defines how web pages are transferred across the internet 2 ‘The computers will be connected to the internet, state 2 precautions when ae VoIP: allows telephone calls over LANS, WANS and internet.” online : hone Any 2 suitable answers“ 35.3 Differentiate between HTTP and HTTPS Is} Both are used to transfer text, images, video and other data for displaying as 2 web page ina web browser./ HTTPS includes security and encryption to | questions protect the information communication process.” : 3.5.4 Name the communications protocol is used to transfer large files between (2) Ba Networks form an integral part of any network, @ cofnputers via networks such as the Internet? : Give @ concise definition of a computer network, FIP : Anetwork is @ collection of computers or other computing devices (such as The ex-students have notice that most cell phones are classified as : smart phones) that are connected by some sort of communication media to smartphones. Explain to them what is 2 smartphone compared to 2 normal | " facilitate sharing of software and resources. phone. ' 32 ANIC is vital when connecting computers in a network. ‘Smartphones are cell phones that include a mobile operating system i Ne 3 : 3.21 Briefly explain the role performed by a NICin terms of a network, fea designed for a mobile device” i ANICis used to encode/decode (‘convert’) the date so that the data can be Smartphones have the aby to Install an run third-party sofwore of transmitted over @ specific medium. =pps. | 3.2.2 How does a NIC for wireless network differ from 2 NIC fora cabled network? (2) Smartphones allow for Internet connectivity and web browsing, : ANIC ina wired or cabled network will need @ port to connect toa cable.“ Any two acceptable answers ANIC for 2 wireless network needs 2 small antenna that allows it to send and Name two opersting systems that smartphones use. @ ng receive data using redio signals.” Android i0sv 3.2.3. The exstudents notice that NIC for the PC's are advertised in 20Mbps/ ) Any 2 suitable answers 100Mbs end 2000Mby bs 2 Ps The ex-students would like you set up email on the teachers phonesasit Explain what these specifications refer to and why there seem to be three would be easier to communicate. \ecifications for the same item. airerent sp ns For the same Rem, Differentiate between ‘Notifications’ and “push technology’. | ‘The Mbps refer to speed “and the reason there are different types of speed Notficat Jers toan automated thatinf | Isfor the citferent types of eebting 7” ions refers toan automated on screen message that informs you : , daha shee when an emailis received. : 3 The ex-students are wort implement twork, th a : . tables yingeround may pesea safety protien, e 8 Push Technology is when the server notifies the device that a new message | i serous te 7 has arrived and downloads it to the device.” | Besides cabling what can they link the PC’ 2 H on ee ew omer wey ' lnk the PC's together What is Blogging and Microblogging? i) ireless connections Blogging is when websites are often updated’ with news and.events while | 34 ‘Amember of the ex-students society wants some clarity on Wifi and WIMAX. microblogging refers to posting short entries,“ 3.41 What do Wifi and WiMex have in common? a ‘They both allow wireless devicés to communicate with one another” 34.2 Whatare the main two differences between these technologies? @ WIMAXis an upgrade of WiFi technology end it allows wireless devices to

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Downloaded from hlayiso.com 5.6 Spyware such as keyloggers monitor your activities and collect personal information inclading passwords and account numbers “and report them to other patties to either use this information directly or in order to gain access to your data. VW 2) 5.7 (Any TWO valid responses) ~~ * Accidentally deleting files or formatting a disk © Not ensuring that regular backups take place + Entering incorrect data in a program Losing or misplacing portable storage devices * Allowing other unauthorised users to get access to data * By not following basic security principles etc. @ 5.8. Power problems can result in foss of data Hardware failure or damage can occur, Theft of hardware. (Any 2) V% @ 5.9. A full backup is a copy ofall your data or files. Incremental ~the backup software only copies over new files and files that have been changed since the last backup. @ 5.10 Verification refers to checking that data entered is correct or accurate -by checking against another source. ~ Data validation is to check that the data entered makes sense —for grade, cannot enter a nuraber aver 12. % Q 3 5.11 Category — radio button” Check boxes, list boxes and other components where a user makes their choice by ~ “clicking on’ or selecting an item from a set of possible options. (Any 2) 7 2 5.12. Data Type, Format, Range and Presence checks.(Any 2) “¥ Total = 2)