Information Technology Grade 10 P2 KZN June 2015 Paper & Memo

Downloaded from hlayiso.com basic education Department: Basic Education REPUBLIC OF SOUTH AFRICA INFORMATION TECHNOLOGY GRADE 10 - PAPER 2 Date: 18 ~ 06 — 2015 DURATION: 2 HOURS MARKS: 100 EXAMINER: M PADAYACHEE cor) MODERATOR: S NAIDOO INSTRUCTIONS: 1. Answer ALL Questions. This paper consists of 7 questions and 10 pages including the cover page. Number your answers exactly as the numbering in the question paper. Read ALL the questions carefully. Do not do more than is required by the question. Write clear and concise answers. . Answer Question 6.1. on the annexure provide with the answer booklet. Page 1 of 10 >

Downloaded from hlayiso.com - QUESTION ONE — { Multiple Choice } Write down the letter of the alternative that best matches the statement or question above it. Ll. is non-volatile memory that can be used as secondary storage. A) SRAM B) DRAM C) Flash memory D) Cache memory 1.2. Firewire is ... A) becoming the preferred method to connect almost any peripheral to a computer. B) the best data connection to use for capturing a digital video. C) a parallel communication standard which allows devices to transfer () data at high speeds. D) software that prevents unauthorised access to a network. 1.3. Physical wires on the motherboard that carries a signal from one point to the next. A) Integrated Circuits B) Bus C) Registers D) Semiconductors 1.4. A software program that records what you type on the keyboard or the mouse clicks you make is called a... A) worm B) honeypot C) keylogger D) cookie ( 1.5. This wireless technology requires line of sight for data transfer. A) Infrared B) Bluetooth C) Wi-Fi D) 3G Page 2 of 10

fl Downloaded from hlayiso.com 1.6. Which one of the following Boolean expressions is correct? EXPRESSION RESULT A) | TRUE AND NOT FALSE FALSE B) | FALSE AND (TRUE OR NOT FALSE) TRUE C) | TRUE OR NOT (TRUE OR NOT FALSE) FALSE D) | TRUE AND NOT (TRUE AND FALSE) TRUE 1.7. Which operating system has been designed specifically to work on a cellphone? A) Android B) Solaris C) Windows Vista D) Linux 1.8. A UPS ... A) is used to provide limited alternative power in the event of a power failure. B) stands for Universal Power Supply. C) is a type of connector that is used for keyboards, D) is used to connect two networks. 1.9. is a type of contro] that serves as an ‘on/off’ or ‘toggle’ fashion. Selecting it again will clear the option. A) Combo box B) Check box C) Drop down list 1.10. A file that is sent via e-mail to its destination is called a/(an) A) Cloned B) Inbox C) Attachment D) Carbon Copy [10] p-t.o. Page 4 of 10\... QUESTION TWO... Page 3 of 10 D) Radio button

Downloaded from hlayiso.com QUESTION TWO Column A Column B 2.1. | The smallest unit of storage in a computer. OSs 2.2. | Provides emergency power during a power failure. Pharming 2.3. | Splitting a HDD into two virtual drives. Bluetooth 2.4. | Magnetic fields in two wires that interfere with EMI each other. SATA 2.5. | Wireless data transfer used over short distances with relatively small files. Attenuation 2.6. | Anelectronic signal that interferes with a normal HTTP network. Binary Digit 2.7. | Software made available with source code to modify and to return without selling. Firewall 2.8. | Cables that connect the HDD controller to the Crosstalk motherboard. Partitioning 2.9. | The loss of signal strength over a distance. Formatting Field 2.10. | Software that hides your computers from other's and denies certain programs access to internet. RFID WiMAX UPS [10] p.t.o. Page 5 QUESTION THREE... Page 4 of 10

Downloaded from hlayiso.com QUESTION THREE HOC has many different centres that have been set up on a large mass of land that are some distance apart. All the computers in each of the centres are linked to a server in the head office, situated at the entrance of the organization. Old age home Sports arena Main Entrance Common hall/kitchen Headquarters Clinic and First Ald Centre Medical Unit Your expertise in I.T. is required to help the administration manager, Mr. Michael Mercy, to solve hardware software and network-related problems. | 3.1. The computers they decided to buy has the following specifications. Answer the questions based on the specifications. i7 4.6GHz 280 OC Gamer | Intel Core i7 4790K, 8mb Cache, 8xCores MSI Z97 Gaming 7 Overclocked to 4.6GHz 8GB DDR3 1600MHz RAM 128 GB Solid State Drive p.t.o. Page 6...3.1.1.\ Page 5 of 10

Downloaded from hlayiso.com 3.1.1, State the name, speed and manufacturer of the processor. (3) 3.1.2. State the size of the RAM. (5) 3.2. The performance of the CPU should be optimised to ensure a high performance computer system. 3.2.1. Explain the role of the ALU and the registers in the CPU (2) 3.2.2, What do you understand by the term “core”? (1) 3.3. Mr Mercy had an argument with his boss who said that the size of the HDD directly affected the speed of the computer. Mr Mercy stated that it was the RAM that increased processing speed. © a) Who do you think is correct? Explain how the speed of the computer is affected by the argument you selected as corrected. (3) b) Tabulate three differences between RAM and Secondary storage? (3) c) How does ROM differ from RAM and Secondary memory? (2) 3.4. When Mr Mercy saw the price of the monitors, he suggested that they retain the old CRT monitors. 3.4.1. What does CRT stand for? qd) 3.4.2. State one health risk when using CRT screens. (1) ( 3.4.3. State the difference between LCD screens and CRT’s. (2) 3.4.4. What does LCD and LED stand for? (2) 3.5. Mr Mercy also suggests that they buy a printer for the centre, to handle most of the office work. a) State'two types of printers that they may possibly encounter while shopping. (2) b) Discuss each type and conclude which is the best one for this organisation. (3) P.t.o. Page 7... QUESTION FOUR [26] Page 6 of 10

Downloaded from hlayiso.com QUESTION FOUR 4.1. Mr Mercy wants to link the ten computers at headquarters which has five different offices. They chose to go with Ethernet LAN standard in a star topology using fibre optic cables. 4.1.1. Briefly describe the terms below: a) WAN (1) b) Topology (1) 4.1.2, State two advantages of having a network of computers to the organisation. (2) 4.1.3, Explain to Mr Mercy why fibre optic cables are not feasible in this situation. O) State two reasons. (2) 4.1.4, Would you recommend wireless networking(WLAN). Give two reasons for your answer. (3) 4.1.5. There are two possible network types that may be used to establish the LAN environment. They are classified into client-server and peer to peer, Tabulate two differences between the two types. (4) 4.2. Mr Mercy wants the centre to have internet. State two reasons why this centre | would need internet access? (2) 4.3, Mr Mercy is not too familiar with a lot of the computer and internet jargon. Explain the terms below to the best of your knowledge. {) -" 43.1. Weblogs qd) 4.3.2. Bandwidth (1) 4.3.3, Protocol (1) P.t.o. Page 8... QUESTION FIVE [20] Page 7 of 10

Downloaded from hlayiso.com . 8 QUESTION FIVE - INTEGRATED SCENARIO Mr Mercy wants to create an interactive web site where visitors can view all activities in the entire organisation online during the day. 5.1. Mr Mercy has heard about VOIP and thinks this is something he could use as it is free. Explain the meaning of VOIP to him. (2) 5.2. State two tasks of an ISP. (2) 5.3. State the difference between a URL and an IP address. Give one example of each. (4) 5.4, Identify the different parts of the e-mail address below. (4) C) 5.5. What is the difference between SPAM and ADWARE. (2) 5.6. What is the distinct difference between a website and a webpage. (2) 5.7. Mr Mercy wants to connect cameras to his computer. What port is required for this connection. (1) 5.8. What is a search engine? State two examples of search engines. (3) C [20] P.t.o. Page 9... QUESTION SIX...\ Page 8 of 10

Downloaded from hlayiso.com QUESTION SIX - Programming and Algorithms Study the algorithm below and answer the questions based on it. 1. Start 2, C€1 3. F€0 4. Input a whole number(N). 5. if(N % C=0) then let F € F+C 6 C€Ctr 7. if (C <=N) then go to line number 5 8. if (F=2*N) print (“ ”) else print(“ ») 9. END. 6.1. Complete the trace table for the input value 6 in the annexure 1. 6.2. Fill in the blanks for the missing outputs in line 8. 6.3. Draw the corresponding flowchart for the algorithm above. 6.4. What would be the output for the input values: a)9 b) 28 c) 14 6.5. State the purpose of the flowchart. p.t.o. Page 10...QUESTION SEVEN...\ Page 9 of 10 [21] (6) (2) (8) (3) (2)

Downloaded from hlayiso.com QUESTION SEVEN 7.1. Convert the numbers to the specified bases: 7.1.1. 104 to By (2) 7.1.2. 1000111, to Bg (2) 7.2. Compute the calculations show all working: 7.2.1. 54633 + 267. (2) 7.2.2.10005 - 4345 (2) 7.3. Find the value of x in each equation shown below: (Show all working) 7.3.1.1011101, = 11x11, (2) 732.143, = 80 (3) [13] GRAND TOTAL = 120/12*10 Page 10 of 10

Downloaded from hlayiso.com - GREENBURY SECONDARY SCHOOL JUNE EXAMINATION - 2015 - GRADE 10 (Please remove this page and hand in as part of your answer) Name of learner: Gr.Div Variables |/O DECISIONS OUTPUT LineNo} c | F | ON N%C=0 |C <= N [F=2*N

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Downloaded from hlayiso.com Question 6: The PTSA at our school is very active and run a camival as an annual fund-raising event. They need to set up a special e-mail account to deal with the carnival communications. 6.1 Adecision needs to be made as to what ISP to use to set up an Internet account. List three criteria you could use to decide which ISP to use besides cost. (3) Type of connectivity on offer “ Are they local What kind of technica! support do they provide v Reputation for service delivery 6.2 Itis possible to use a free web-based e-mail service such as Hotmail or Gmail that is accessible from any place that has Internet access. List two disadvantages of using a web-based e-mail service as opposed to an ISP based e-mail account. (2) Does not leok very professional to have such a generic email “ Need to be connected to the Internet to read your mail v 6.3 The PTSA was referred to the following URL for the regulations dealing with public events. Attp:// www.capetown.org.za/uploads/EventRulesandRegulations2013.pdf 6.3.1 Whai significance does the -0fg.2a part of the URL have? (2) Shows that this is an organization (org) — usually non-profit ~ Resides in South Africa (za) ¥ 6.3.2. The document referred to is a PDF document, What is a PDF document and what software would you need to open this file? (2) A document that can be read irrespective of which application it was created inv Acrobat reader “ 6.4 One of the downsides of being connected to the Internet and using e-mail, besides viruses, is that of spam, Phishing and spyware. 6.4.1 What is spam? (1) Unwanted email messages ~ usually advertising ~ 6.4.2 Give two typical symptoms that might alert you to the presence of spyware on your computer. Unusual Internet activity when you are not surfing the net Slower performance ¥ Q) [12] Grade 10 information Technoiogy, Paper lI— Theory Page 5 of 10 ~~ Question 7: 7.1 Explain how a binary number differs from the normal decimal number system we use every day. (2) Base 2v Only 2 values — 0 and 4 to make up the more complex numbers ¥ 7.2 Convert the following binary number to a decimal number showing all the steps required for the conversion: 100010412 (4) Tx2 + Ox 240x240 x24 1x2 40x Ze tx Dei xv = 4x 128 +0x64+0x324+0x16+1x8+0x441x241x10 =128+8+2+1¥4 = 1390 7.3 Computers are also able to work with hexadecimal numbers. Convert the following decimal number into its hexadecimal equivalent showing all the steps required to do the conversion: 4 39549 (4) 4395 + 16V= 274 remainder 11 (B) ¥ (successive CORRECT divisions by 16) 274+ 16=17 Femainder 2 (Determines successive remainders correctly} 17=16=14 remainder 1 1=16=0 remainder 4 Answer = 112Bis ¥ (correct answer) V (shows base 16) Mo] Grade 10 Information Techaology, Paper Il— Theory Page 6 of 10

Downloaded from hlayiso.com Section E - Solution Development Question 8: 8.1 In many sporting events, the toss of a coin determines the order of the. events. The coin will be tossed a number of times. Each time the coin lands a 0 is recorded if heads is uppermost and a 1.is recorded if is uppermost. Write a pseudo code algorithm for a program that will keep track of the number of times that the coin is tossed and to calculate and output the percentage of times that heads is uppermost, (6) counter €¢ 0 numHeads ¢ 0 ¥ while tossing true ¥ if heads showing v (End if must be in correct place) numfeads + i ¥ counter +i ¥ End while (End while must be in the correct place) percentage € numleads + counter x 100 ¥ 8.2 Look at the section of Scratch code and evaluate what the value in the additional variable will be if the information input is as follows: numSubjects = 8 Subject8 = Business Studies Grade = 10 . @ False vv ow 8.3 Draw a flowchart to represent the following section of Scratch code: (4) [20] Grade 10 Information Technology, Paper I~ Theory Page 7 of 10 Grade 10 information Technology, Paper !I—Theory Page 8 of 10

Downloaded from hlayiso.com Section F — Social & Ethical Issues Question 9: Scenario: 9.1 List three ways that using the Internet will improve the life of your family at home. (3) internet banking “ Research for homework ¥ Online bookings etc... “ 9.2 Your sister reads her email and is overjoyed to find out that she has won the UK lottery of one million pounds. Explain why this email is not true and why she was sent it in the first place. (2) Cannot win if you did not enter “ In order to scam money from her — there will be fees to pay at some point 9.3 Explain the difference between a Pop up and a cookie. (2) Pop-up can be advertising or it can be an active part of a website required for you to enter info ~ can be harmful v Cookie is a small text file on your computer that stores certain browsing info 9.4 You are experiencing blurry eyes and back ache from using your computer. Give three reasons why you could be experiencing such problems. (3) Bad posture Vv Poor screen quality ~ Too long without a rest and a stretch Poor lighting in the room 9.5 Your mother has said that your room is untidy and wants to throw your old computer in the dustbin, printer and all. Give her two reasons why this is not environmentally friendly. (2) Plastics and other materials are not bio-degradable “ Contains harmful substances that can poison the environment “ 9.6 Digital Divide 9.6.1 Whatis the digital divide? (2) Difference between those that have access v to technology and those who don't ~ 9.6.2 Give two ways in which the digital divide can be alleviated in South Africa. (2) Put computers into community centres v’, continued computer education programs for free in all areas (Any other reasonable proposals) Grade 10 Information Technology, Paper fl Theory Page 9 of 10 9.6.3 Would it be possible to use Social Networking as a means to educate South Africans who do not have access to schools? Justify your answer. (3) Nov ~ . Not everybody has access to computers and the internet ¥ and thus the very people you want to educate will not have access to social media ¥ (or a Yes argument that is backed up — e.g, through the use of mobile phones eto) [19] PAPER TOTAL = 120 (Converted to 150) Grade 10 Information Technology, Paper Il~Theory Page 10 of 10 | aN aed * . :

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