4. The Medium Access Sub Layer Broadcast channels [or multi-access channels] are a category of networks and the key issue is how to determine who gets to use the channel when there is competition for it. The protocols which define these factors belong to a sub layer of data link layer called the MAC(medium access control)sub layer. ALOHA: Norman Abramson devised a new and elegant method to solve the channel allocation problem called the “ALOHA” system which used ground-based Radio broad
Premium Ethernet
Listing of Securities Chapter Objectives To understand the concept of listing of securities To know the criteria for listing shares To learn the listing procedure To understand the concept of delisting Concept of Listing of Securities It means the admission of shares of a public limited company on the stock exchange for the purpose of trading. A company intending to have its shares listed on the stock exchange has to write an application to one or more recognised stock
Premium Stock market Stock exchange Stock
Building Security In Editor: Gary McGraw‚ gem@cigital.com Software Security S oftware security is the idea of engineering software so that it continues to function correctly under malicious attack. Most technologists acknowledge this undertaking’s importance‚ but they need some help in understanding how to tackle it. This new department GARY MCG RAW Cigital 80 aims to provide that help by exploring software security best practices. The software security field is a relatively
Premium Computer security Software engineering Security
Securing the Homeland Introduction The security of the United States and living without being under a constant threat should be very important to all citizens and those who visit this country. The research revealed some interesting facts‚ it is impossible to secure every commercial building‚ airport‚ bridge‚ bypass‚ and government building. One element of the security is that terrorists will not have the ability to attack every place in the United States. However‚ everything is a possible target
Premium United States United States Department of Homeland Security United States Coast Guard
Environmental security is one of modern worlds raging topics‚ and one that should conern us all; as indiviuals‚ as a nation and as a part of this precious Earth. Environmental security scrutinizes the possible disastrous and negative implications of environmental events on the world of today. It revolves around a very sensitive theme‚ of the powerful impact of years of human conflict and international relations on the environment and how this possible threat will not only effect one country‚ but
Premium Earth Natural environment Environment
Checkpoint: Cyber Security Checkpoint: Cyber Security I have a multitude of passwords to memorize in an effort to maintain my privacy and security. It is unfortunate that cyber world users must constantly deploy measures to keep their personal information private. Before this class I was certainly aware of the potential dangers that could occur in cyberspace‚ prevention always has been my goal. I have security protection in place against attacks such as viruses‚ spam‚ malware‚ spyware‚
Premium Password Computer security Authentication
Security issue may Sounds like a hackneyed and stereotyped expression‚ but when it comes to the campus security‚ we have to take it seriously. Nearly every year‚ there are reports to the security office on campus that many children are killed. A college is supposed to be safe; however‚ in fact‚ it’s not safe enough. Campus safety is a major concern not only to students and administrators‚ but also to parents. Overall‚ campus crime decreased gradually‚ but high profile incidents have put safety
Premium Security College University
40 secs SECURITY CONCERNS OF PAKISTAN AND THEIR RESPONSES INTRODUCTION 1. According to Walter Lippman‚” A nation has security when it does not have to sacrifice its legitimate interests to avoid war and is able‚ if challenged to maintain them by war”. Security as a concept is a subject of interpretations. The term security is always relative‚ contextual and situational. Interestingly enough‚ the security of one nation tends to generate the feeling of insecurity
Premium Pakistan Jammu and Kashmir Taliban
Windows Azure™ Security Overview By Charlie Kaufman and Ramanathan Venkatapathy Abstract Windows Azure‚ as an application hosting platform‚ must provide confidentiality‚ integrity‚ and availability of customer data. It must also provide transparent accountability to allow customers and their agents to track administration of services‚ by themselves and by Microsoft. This document describes the array of controls implemented within Windows Azure‚ so customers can determine if these capabilities
Premium Computer security Security Access control
Security Mechanisms in 2G and 3G Prasenjit Das(0710434) Student‚ Dept. of Computer Sc. & Engineering National Institute of Technology Agartala‚ Agartala‚ Tripura (w)‚ India dprasenjit83@yahoo.in Debapriya Banik(0710411) Student‚ Dept. of Computer Sc. & Engineering National Institute of Technology Agartala‚ Agartala‚ Tripura (w)‚ India debu_nita@yahoo.com Abstract. With the advent of 2G & 3G technologies we have stepped into an era of social globalization
Premium GSM Password Authentication