in the protection of assets. No computer system or network achieves perfect security; even a system switched off with its hard drive removed sunken in a lead case in the bottom of a deep pool in an underground facility lacks security‚ as it guarantees integrity and confidentiality but completely sacrifices availability. As a security professional‚ you must understand the risks a network faces; you must‚ in essence‚ know how to bring the network down‚ to steal the data you want‚ and to falsify important
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Thus it chooses the Beijing Olympics Games to explore. This report can be divided into 5 main parts. First part is summarizing Beijing Olympic Games on the impact of tourism industry. It will explore from three aspects which include the image of the country‚ the tourist source and tourism environment. Second part is overviewing Beijing Olympic Games makes the Beijing a unique tourist destinations. The next part is analyzing two major tourism dimensions of Beijing Olympic Games. The last part is a brief
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Only adult male citizens played a political role in ancient Athens. Men rich or poor could vote‚ as long as they were qualified citizens‚ but usually the richest ones held the most political clout as Athens was a class based society. In contrast‚ Sparta was an oligarchy and could also be viewed as a military dictatorship in which all men served to defend the state. Both societies had an organized form of government‚ although the political structure was different. The cultures of the Athenians
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line 1. INTRODUCTION Wireless ad hoc networks have emerged to support applications‚ in which it is required/desired to have wireless variety of devices without relying on communications among a any infrastructure or central management. In ad hoc networks‚ wireless devices‚ simply called nodes‚ have limited transmission range. Therefore‚ each node can directly communicate with only those within its transmission range (i.e.‚ its neighbours) and requires other nodes to act as routers in
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are Athens and Sparta‚ which has a long history of competition and war between them for supremacy. Athens is the birthplace of democracy‚ while the Spartans have adopted an oligarchy ruling system‚ this system extends to them and the rest of Lacedaemonians. The battle of Thermopylae united the whole of Greece against a common enemy Persia‚ fought 495 BC. After this battle‚ Persia continues to be a main power in that region. The battle started with the Ionian revolt which was started by Athens and
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COMPUTER | NETWORK AND COMMUNICATION | | NOTES | | | | | INDEX (COMMUNICATION AND NETWORK CONCEPT) I.NETWORK II.EVALUATION OF NETWORKING 1.ARPANET III. SWITCHING TECHNIQUES 1. CIRCUIT 2. PACKET 3. MESSAGE IV.TRANSMISSION MEDIA: Two types of media GUIDED MEDIA 1.TWISTED PAIR CABLE
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Peer-to-Peer Networks for Content Sharing Choon Hoong Ding‚ Sarana Nutanong‚ and Rajkumar Buyya Grid Computing and Distributed Systems Laboratory‚ Department of Computer Science and Software Engineering‚ The University of Melbourne‚ Australia (chd‚ sarana‚ raj)@cs.mu.oz.au ABSTRACT Peer-to-peer (P2P) systems are popularly used as “file-swapping” networks to support distributed content sharing. A number of P2P networks for file sharing have been developed and deployed. Napster‚ Gnutella
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Olympic Swimmers Opinion Piece Four Olympic swimmers walked into a gas station bathroom after a night of drinking. They then kicked the bathroom door‚ pulled down a sign and returned to their taxi. Then an armed guard approached them and asked that they pay reparations. Allegedly the athletes handed over about fifty US dollars. When the swimmers returned to the place where they were staying they explained that they were late because they had been held up at gunpoint and robbed. According to Fox News
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1 Multi-Channel Scheduling and Spanning Trees: Throughput-Delay Trade-off for Fast Data Collection in Sensor Networks ¨ Amitabha Ghosh‚ Ozlem Durmaz Incel‚ V. S. Anil Kumar‚ and Bhaskar Krishnamachari Two primary factors that affect the data collection rate (throughput) and timeliness (delay) are: (i) efficiency of the link scheduling protocol‚ and (ii) structure of the routing tree in terms of its node degrees and radius. In this paper‚ we utilize multiple frequency channels and design an
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When troubleshooting a computer network‚ it is very important that we look at every small detail in that network. One small mistake like a mistyped number can make all the difference in the way a network performs. In the case of the diagram E-1‚ there are many problems like this that can cause the network to not perform the way it is supposed to. Some of these problems include the IP addresses‚ subnet masks‚ and default gateways in this network. All of these things need to be correct and working
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