COMPUTER NETWORKS 4TH MARCH 2012 Examination Paper Answer ALL questions. Clearly cross out surplus answers. Time: 2 hours Any reference material brought into the examination room must be handed to the invigilator before the start of the examination. ANSWER ALL QUESTIONS Marks QUESTION 1 a) State FOUR (4) principles underpinning the Open Systems Interconnection (OSI) Reference Model. b) Describe the purpose of the physical layer of the OSI Reference Model. c) State THREE (3) elements
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often computers and related equipment are being involved in the educational process nowadays. This tendency of wiring schools‚ exercising long distance learning‚ and depending on the internet for information is apparently being actively promoted. Lately‚ politicians and some educators have begun praising computers as the new technological universal remedy‚ “the one that will turn classrooms into cybernetic gardens for growing young minds” (EMC Paradigm Publishing). The utilization of computers in education
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A network topology that is generally in a line formation‚ which uses several devices that are all connected to a common central cable called a bus and commonly used for LAN’s. Component Description Usually 2 or more desktop of notebook computers with a network interface card. A common printer is shared by all desktops or notebook computers. The server process requests and delivers data to the client computers over the internet or network.
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The Most Important Things in my Life By Vasilios Politis Professor C. Simpson ENC 1101-293 17 June 2008 Politis i Outline T: The three things that are most important to me are my family‚ basketball‚ and most importantly‚ being remembered for something great. I. The most important thing in my life right now is my family. A. My family will always be there for me and give me the guidance and support that I need. 1. My family has helped me to get my act together and get back
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modern Olympics‚ once said that "The most important thing in the Olympic Games is not winning but taking part.” Well‚ I believe that no one should be taking part in the Olympics‚ because they should be cancelled. Yes‚ it can be argued that they provide countries with sometimes much needed unity and strength to improve‚ and that the Olympics are highly competitive that is great for the athletes competing. But‚ the pros greatly overweigh the cons. The Olympics should be cancelled because of the poor results
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printer uses a) Raster scan b) Camera lens c) Heat sensitive paper d) None of these Q2. A Plotter is a) An input device to produce good quality graphics b) An output device to produce drawings and graphics c) A fast output device using camera lenses d) None of these Q3. Main memory stores a) Data only b) Program only c) Data‚ Program and result or any other kind of information d) None of these Q4. A smart terminal is one which
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The Important Things What are the most important things in my life? Family is the number one most important thing in my life. My girlfriend‚ education‚ career‚ money and happiness are also very important to me in life. Without my family I wouldn’t be the person I am today. I couldn’t ask for better parents. And I have a little brother I wouldn’t be able to live without. My parents work very hard to provide a wonderful life for us. We really enjoy going camping and taking other vacations together
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Division Multiplexing technique is the process of translating the frequency of individual channel into per-assigned frequency slots within the bandwidth of the transmission medium. Different carries frequencies are assigned to different users. We can use any modulation scheme to assign carrier frequency. Example: FDM can also be used to combine signals before final modulation onto a carrier wave. In this case the carrier signals are referred to as subcarriers: an example is stereo FM transmission
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depicts the principal differences among Arabic sign languages in general and the spoken language is given. spread‚ forming acknowledged sign languages. By and ` large‚ the view held vis-a-vis disability‚ including hearing‚ in the Arab society is still one of accommodation rather than assimilation. Downloaded from http://jdsde.oxfordjournals.org/ by guest on November 23‚ 2012 Arabic Sign Languages: Evolution and Relationship With Diglossia Arabic Diglossia: A Brief Account The term diglossia was first
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Use of Computers in Banks Computers are used in banks for a variety of reasons. They help bank personnel operate more efficiently and effectively. Computers are used to track certain transactions and they help process other customer information as well. Without computers‚ it would be very hard for a bank to offer good customer service day in and day out. Computers help a bank save time and money‚ and can be used as an aid to generate profits. Customer Information Banks use computers to track customer
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