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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Solar Energy In 1839 Alexander Edmond Becquerel discovered the photovoltaic effect which explains how electricity can be generated from sunlight. He claimed that an electrode submerged in a conductive solution would create an electric current. ‘However even after much research and development subsequent to the discovery‚ photovoltaic power continued to be very inefficient a solar cell were used mainly for the purposes of measuring light. Solar energy is radiant light and
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would break down five hours later in a beach town called Treasure Town. She initially meets two men‚ mechanics who are very attractive but keep their distance‚ when she’s told her car isn’t worth fixing she must make some decisions on where to go and what to do. Getting a job in the local hang out spot just sort of happened.
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“The Ptolemaic Dynasty of Egypt (304 – 30 B.C.)” A large cultural shift in ancient Egyptian history began to emerge‚ once Hellenistic leaders took over. Egypt became a product of the exchange between the two elaborate cultures. Alexander the Great conquered Egypt‚ from Persian leadership in 332 B.C. After his death in 304 B.C.‚ his leadership was passed on to Ptolemy I — who was one of his generals. In becoming a new leader of this complex society‚ (which also underwent several territorial battles
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Running Head: CASE STUDY Case Study Geraldine Aloise Kaplan University Abstract Verizon Wireless is a wireless carrier that operates the largest 4G LTE network in the United States. The company provides cell phone and data services to its 98.2 million customers. Its success is largely attributed to its reliable network coverage and outstanding customer service. In addition to providing 24 hour telephone support‚ the company also operates retail stores throughout the U.S. This case study
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1. Before C&C’s reorganization‚ why was its performance poor? To examine the poor performance before C&C’s reorganization‚ it’s essential to look at the structural and contextual dimension in the organization. This approach helps to reveal what the problems were‚ and where the problems arose in the organization. (Daft‚ 2010:20) C&C’s structural dimensions before the reorganization First of all‚ C&C had a tall organization‚ with narrow spans of control and centralized authority. The authority
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contact no. email address( its age of technology)‚ Date of birth CNIC no. P.P continue Mostly optional Father’s name Gender Religion Marital status Nationality Domicile Etc……………… How to write Ali House no 101‚ street 02‚ B-block‚ Eden colony Bhakkar +923310987654 ali786@gmail.com Personal profile: Gander: male Date of birth: 01-01-1991 Continue Ali Personal data‚ profile‚ information: Address: ………………………………………….. Contact number: …………………………….. Email: ……………………………………………
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WIRELESS POWER TRANSFER ABSTRACT The main objective of this project is to develop a device for wireless power transfer. The concept of wireless power transfer was realized by Nikolas tesla. Wireless power transfer can make a remarkable change in the field of the electrical engineering which eliminates the use conventional copper cables and current carrying wires. Based on this concept‚ the project is developed to transfer power within a small range. This project can be used for charging
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Wireless Networking: Is the Future of Computing 1. Introduction Do the benefits of mobility and convenience outweigh the issues associated with a wireless network? In order to answer this question we must first understand what wireless networking entails. Therefore‚ within this paper we will discuss the use of wireless technology in everyday life‚ explain the benefits associated with this type of network‚ and describe the short comings of a wireless network. However‚ these short comings are virtually
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The Hellenistic period between 334 and 323 B.C.‚ Alexander the Great and his armies conquered much of the known world‚ creating an empire that stretched from Greece and Asia Minor through Egypt and the Persian empire in the Near East to India. This unprecedented contact with cultures far and wide disseminated Greek culture and its arts‚ and exposed Greek artistic styles to a host of new exotic influences. The death of Alexander the Great in 323 B.C. traditionally marks the beginning of the Hellenistic
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