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The IEEE has standardized the 802.11 protocol for Wireless Local Area Networks. The primary medium access control (MAC) technique of 802.11 is called distributed coordination function (DCF). DCF is a carrier sense multiple access with collision avoidance (CSM A/CA) scheme with binary exponential backoff algorithm (BEB). DCF describes two techniques to(More)
Mobile ad hoc networks (MANETs) are a collection of mobile hosts which communicate with each other with no central network authority or fixed infrastructure. Due to its characteristics like mobility and heterogeneity ad hoc networks are more vulnerable to attacks. Black hole is an attack where all the packets forwarded to attacker node, by neighboring(More)
Semantic Web is a Web that adds more meaning to the Web documents in order to access knowledge instead of unstructured material and also allowing knowledge to be processed automatically. One of the methods to achieve this is of using Ontology. The Ontology defines the terms and the relations among the terms on a domain. There are number of Ontology(More)
Retrieving the most relevant information for the Web becomes difficult because of the huge amount of documents available in various formats. It is mandatory for the users to go through the long list of snippets and to choose their relevant one, which is a time consuming process. User satisfaction is secondary in this aspect. One approach to satisfy the(More)
Evidently there is a tremendous increase in the amount of information found today on the largest shared information source, the World Wide Web. The process of finding relevant information on the web is overwhelming. Even with the presence of today's search engines that index the web it is difficult to wade through the large number of returned documents in a(More)
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