Information Technology Grade 11 March Test 2017 Paper & Memo

Downloaded from hlayiso.com KZN DEPARTMENT OF EDUCATION GREENBURY SECONDARY SCHOOL INFORMATION TECHNOLOGY MARKS: 60 TIME: 1% hour | EXAMINER: M PADAYACHEE | MODERATOR: S NAIDOO DATE: 23 — 03 - 2017 | This question paper consists of 5 questions on 6 pages. INSTRUCTIONS AND INFORMATION 1. Read ALL questions carefully. 2. Answer ALL questions. 3. Answers should be as concise as possible. 4. Number your answers exactly as the questions. 5. Good Luck! P.t.0, QUESTION ONE Page 2... Page 1 of 6

Downloaded from hlayiso.com so QUESTION ONE For each question 1,1.to 1.10. there are four options given. Choose the letter of the answer that best matches the question above it. 1.1, The Front Side bus... A) Is aserial cable which fs used to connect the CPU to external ports. B) Connects printers to stand alone PC’s. C) Stores the results of calculations performed in the CPU. D) Comes in several types, such as data instruction, or address. 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 video. C) aparallel communication standard which allows devices to transfer data at high speeds. D) software that prevents unauthorised accessto a network. 1.3. AUPS.., | A) is used to provide limited alternative power in the event of a power failure. | B) stands universal power supply. C) isa type of connector that is used for keyboards. D) is used to connect networks, 1.4. Open source software is... A) the same as free software. B) software that can be downloaded for the internet, but which, does not have documentation or support. C) available under a licence that permits users to change and improve the software, and then to redistribute in a modified form. BP) Usually unreliable as people have tampered with it. 1.5. Which one of the following combination of components is found on the motherboard? A) Printer, keyboard, busses e2&e CPU, busses, mouse driver HDD, system clock, RAM, ROM CPU, RAM, ROM, CACHE memory, busses, system clock a D) Page 2 of 6

Downloaded from hlayiso.com QUESTION TWO For each of the questions(2.1 to 2.10),write down only the letter of the term/phrase from column B that matches the description in Column A, COLUMN A COLUMN B 2.1, It converts each program line into machine code and executes it. A Delphi 2.2. An Example of a high level language program is B HTTP 2.3. is the communication protocol for the internet. C WiFi 2.4.A secure version of Hypertext Transfer Protocol, D POST 2.5. Low level language programs are called machine language or E Serial language. 2.6, A wireless communication standard that uses an extremely high F Parallel bandwidth over relatively longer distances. 2.7. A network topology in which one terminal failure results in the shutdown of the network. G Interpreter 2.8. Data is transmitted one bit at a time, one after the other on a single wire. H_ Bus 2.9. A set of diagnostic routines carried out whenever a computer is booted. | Firmware 2.10, is software that is written to the read-only memory (ROM) of a computing device. J Secure sockets layer K_Ring L_ Formatting M TCP/IP N BIOS O Assembly P_WiMAX Q SAMOS R_CMOS QUESTION THREE — [Hardware - Computer Architecture] Your school wants to upgrade their computers. They have decided to purchase some new ones as well as refurbish some of the old ones. One of the teachers approached you to assist them in making the right decision when it comes to purchasing computers and upgrading the old ones. Assist them in defining technical terms related to modern PC designs. 3.1. Give a brief account of the purpose of a “chipset” in a computer. (2) 3.2, Examine the diagram below and indicate possible components labels for A, B, C and D respectively. Page 3 of 6 (4)

Downloaded from hlayiso.com ‘On Standard YO (a. - Serfal / Parallel ae Fo toard) tome pirewlre CPU he) AGP Video <q-mapel i (8)** 3.3. Highlight the difference between the /O- bus and the expansion bus by stating the main function of each. (2) 3.4. State two problems that may arise as a result of overclocking a CPU. (2) 3.5. The new computers contain two USB ports and a fire-wire port and a HDMI port. 3.5.1. Suggest ONE use of a fire-wire port. (2) 3.5.2. What does HDMI stand for? State one advantage of this type of port. (2) 3.6, Explain how Blu-ray disks store, read and write information as opposed to normal DVD's. (2) 3.7. How are SSD’s different from magnetic hard drives. State 3 advantages that SSD’s have over SATA and IDE drives, (4) 3.8. What are the components of Access time on a disk? (2) 3.9. Cache memory is an integral part of the modern computer system. The earliest form of cache in the CPU has led to other forms viz. Disk caching, browser caching and web caching. a) Describe the levels of Cache in the computer in and around the GPU by giving their location. (3) b) Discuss the two other types of caching underlined in the statement above. (2) [27] QUESTION FOUR [System Software] The computers need to have a good Operating system. The choices given are between Windows 8 and Windows 10. 4.1. Discuss the 3 main functions of a computers operating system. (3) Page 4 of 6

Downloaded from hlayiso.com 4.2. Discuss how the OS uses interrupts under the following headings: a) Hardware interrupts (1) b) Software interrupts (1) 4.3. One of the key areas of managing memory by the operating system is virtual memory. 4.3.1. Briefly describe what virtual memory is. (2) 4.3.2, What is the advantage of using virtual memory. (2) 4.4, Many different processing techniques have been developed over the years to help the operating system and the CPU perform faster and more efficiently. Briefly describe the following processing techniques: 4.4.1, multiprocessing (2) 4.4.2, multitasking (2) 4.4.3, hyperthreading (2) 4.5. Apart from any version of Windows, write down the name of TWO other operating systems you have heard of that is designed for computers. (2) 4.6. Explain the main difference between a printer controller and a printer driver. (2) 4,7. Explain the meaning of the term “Hot Swapping/Hot Plugging” and give an example. (2) 4.8. What do the following acronyms stand for? a) IRQ | (1) b) OSS (1) [23] QUESTION FIVE [NETWORK AND COMMUNICATIONS TECHNOLOGIES] The current network in the IT room needs to be upgraded if new computers are to be purchased. 5.1. Coaxial and STP cables used in the IT rooms pose three major problems due to the copper that is used in the cabling. Name and briefly describe each problem. (6) 5.2. The different rooms in the school have different LAN topologies. Each LAN segment is joined. Discuss the functions of the devices below: 5.2.1. Repeater (2) 5.2.2, Bridge (2) 5.2.3, Router (2) Page 5 of 6

Downloaded from hlayiso.com 5,3. Complete the table(5.3.1. - 5.3.6.) showing the different LAN technologies used at your school. (8) ‘ Ethernet FDDI Common topology used 5.3.1. 5.3.4. Types of cabling used 5.3.2. 5.3.5. Media access method 5.3.3. 5.3.6. 5.4. What is the main purpose of a Gateway? Explain how it differs from a router. (2) 5.9. What does it mean to say that the school is a HOT SPOT? (2) 5.10. Learners in the school will be allowed to use their tablets or smartphones to access the Internet, with obvious restrictions. Discuss the different technologies that may be used by the different devices under the following headings: a) EDGE b) 4G LTE c) WiMax TOTAL = 90 +3 x2=60 Page 6 of 6 | (1) (1) (1) [25]

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