GRADE 11



DEPARTMENT OF EDUCATIONGREENBURY SECONDARY SCHOOLINFORMATION TECHNOLOGY2278380193040GRADE 1100GRADE 1128765528575MARCH CONTROL TEST 201800MARCH CONTROL TEST 2018MARKS: 60TIME: 1 ? hourEXAMINER: M PADAYACHEEMODERATOR: S NAIDOODATE: 27 – 03 – 2018 This question paper consists of 3 questions on 6 pages.INSTRUCTIONS AND INFORMATIONRead ALL questions carefully.Answer ALL questions.Answers should be as concise as possible.Number your answers exactly as the questions.Good Luck!QUESTION ONEFor 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.User configurations such as the real time clock or boot sequence are stored in______.BIOSCMOSRAMROMMemory that stores data and instructions that the CPU is currently executing.L1 CacheL2 CacheRegistersRAMA Sound card could fit in the following slot(s):PCIPCI-eBoth PCI and PCI-eNeither PCI nor PCI-eAn internal bus…Is a serial cable which is used to connect the CPU to external ports.Connects printers to stand alone PC’s.Stores the results of calculations performed in the es in several types, such as data instruction, or address.Firewire is …becoming the preferred method to connect almost any peripheral to a computer.the best data connection to use for capturing video.a parallel communication standard which allows devices to transfer data at high speeds.software that prevents unauthorised access to a network.A UPS …is used to provide limited alternative power in the event of a power failure.stands universal power supply.is a type of connector that is used for keyboards.is used to connect networks.Open source software is…the same as free software.software that can be downloaded for the internet, but which, does not have documentation or support.available under a licence that permits users to change and improve the software, and then to redistribute in a modified form.Usually unreliable as people have tampered with it.Which one of the following combination of components is found on the motherboard?Printer, keyboard, bussesCPU, busses, mouse driverHDD, system clock, RAM, ROMCPU, RAM, ROM, CACHE memory, busses, system clockThe process of carrying out more than one task in the same program with a single processor is called_____________.MultithreadingMultiprocessingMultitaskingHyperthreadingIt takes an entire program and translates it into a machine language.Interpreter CompilerProgrammerDecoder[10]QUESTION TWOYour friend wants to buy a desktop computer for gaming and homework. However, he only has R3000 in savings and therefore decided to purchase a second hand PC from a Gumtree advert. He shows you the advert (see below) and asks your opinion on whether it is a suitable choice.You run a google search on the listed CPU and find the following specifications.Answer the questions that follow based on the information above.Name the manufacturer of the CPU. (1)What does it mean if a CPU is Dual-Core?(1)In the specifications the CPU’s clock speed is set at 3.4 GHz.How does the GHz unit of measurement relate to clock speed?(2)Discuss how the CPU manages to reach this speed while the motherboard system clock only runs at 100 MHz.(2)Identify two possible methods to overclock this CPU.(2)Name one advantage and two disadvantages when overclocking a CPU.(3)What is the name given to the register that stores the result of each execution?(1)Study the diagram below and answer the questions based on it:The arrows in the diagram represent busses. Define a bus. (1)Identify two devices from the Gumtree advert that can be classified as I/O devices in the diagram above. (2)What does FSB stand for?Give two other names for the FSB. (3)Name and discuss the functions of the three busses that make up the FSB. (6)Explain what a “chipset” is. (1)What would one connect to the PCI-e slot in the above diagram? (1)Explain why PCI-e is connected through the Northbridge or PCI-e controller and not through the Southbridge or chipset. (2)How are SSD’s different from magnetic hard drives. State 3 advantages that SSD’s have over SATA and IDE drives. (4)What are the components of Access time on a disk? (2)Cache memory is an integral part of the modern computer system. The earliest form of cache in the CPU has led to other forms of viz. Disk caching, browser caching and web caching.Describe the levels of Cache in the computer in and around the CPU by giving their location. (3)Discuss the two other types of caching underlined in the statement above. (2)ROM generally stores firmware. What is firmware? (2)Explain the purpose of GPU and how it assists the CPU. (2) [43]QUESTION THREEThe computer needs to have a good Operating system. The choices given are between Windows 8 and Windows 10.3.1. Discuss the 3 main functions of a computers operating system.(3)3.2. Discuss how the OS uses interrupts under the following headings: Hardware interrupts(2)Software interrupts(2)One of the key areas of managing memory by the operating system is virtual memory.3.3.1. Briefly describe what virtual memory is.(2)3.3.2. What is the advantage of using virtual memory. (2)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:multiprocessing(2)multitasking(2)hyperthreading(2)3.5. 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)Explain the main difference between a printer controller and a printer driver. (2)Name and discuss the four steps in the Machine Cycle.(8)Explain the meaning of the term “Hot Swapping/Hot Plugging” and give an example.(2) What do the following acronyms stand for?IRQ(1)OSS(1)State the difference between source code and machine code respectively.(2)State two differences between the operating system of mobile devices and desktop or laptop computers.(2)[37]TOTAL = 90 ÷ 3 x 2 = 60 ................
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