Carrier Sense Multiple Access with Collision Avoidance. However‚ simple CSMA is susceptible to the hidden node problem‚ especially in so called ad hoc networks where a node may communicate directly with every other node in range or using intermediate nodes as relays otherwise. Hidden nodes cause costly packet collisions and thus significantly affect network performance. In order to combat the hidden node problem‚ a mechanism known as Request to Send/Clear to Send (RTS/CTS) handshake is often used. RTS/CTS
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background The YES Country Network Tanzania was formed in August 2001 at a meeting of 50 youth related NGOs in Dar es Salaam. The meeting was organised by the Tanzania Media and Youth Development Association (TAMEYODA)‚ and chaired by the Hon. Gertrude Mongella Secretary General Beijing Conference for Women. The result was the formation of a YES Country Network Coordinating Committee. The committee has since expanded the Network‚ which now includes representatives over 250 different
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TYPES OF COMPUTER NETWORKS Maninder Kaur professormaninder@gmail.com What is Network? • A network consists of two or more computers that are linked in order to share resources (such as printers and CDs)‚ exchange files‚ or allow electronic communications. • The computers on a network may be linked through cables‚ telephone lines‚ radio waves‚ satellites‚ or infrared light beams. Different Types of Networks • Depending upon the geographical area covered by a network‚ it is classified as: – Local
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Marketing Plan for Verizon Wireless Customer Loyalty Program Business Mission: To provide the best quality of wireless and customer services in today’s market of wireless communications. Marketing Objective: To decrease the monthly customer churn rate to less than 1%‚ therefore ensuring Verizon Wireless will continue to lead the competition in customer loyalty. Executive Summary: Cellular communications is such a large aspect of today’s industries‚ and with the number of consumers already
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ABSTRACT : This paper describes the basic threats to the network security and the basic issues of interest for designing a secure network. it describes the important aspects of network security. A secure network is one which is free of unauthorized entries and hackers INTRODUCTION Over the past few years‚ Internet-enabled business‚ or e-business‚ has drastically improved efficiency and revenue growth. E-business applications such as e-commerce‚ supply-chain management‚ and remote
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COMPUTER NETWORKS NETWORK TELEPHONY –VOICE OVER INTERNET PROTOCOL(VoIP) VoIP is a set of technologies that enable voice calls to be carried over the internet (or other networks designed for data)‚ rather than the traditional telephone landline system-the Public Switched Telephone Networks(PSTN). VoIP uses IP protocols‚ originally designed for the internet‚ to break voice calls up into digital ‘packets’. In order for a call to take place the separate packets travel over an IP network and are reassembled
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TRƯỜNG ĐẠI HỌC HÀ NỘI KHOA ĐÀO TẠO SAU ĐẠI HỌC TIỂU LUẬN MÔN HỌC Tên môn học: ELT MATERIALS EVALUATION AND DEVELOPMENT Mã môn học: 5121 Giảng viên: NGUYỄN VĂN KỶ‚ M.A. Học viên: NGUYỄN THỊ THÚY HẰNG Lớp: 2701- 21 Mã số HV: 2187010018 Điện thoại: 0985601136 Tên đề tài: MATERIAL DEVELOPMENT FOR A 120- MINUTE LESSON IN IELTS PREPARATION PROGRAM IELTS WRITING TASK 1- BAR CHART DESCRIPTION Thời hạn nộp bài: 14/2/2014 Ngày nộp bài: 14/2/2014 Cam đoan: Tôi xin cam đoan‚ đây là công trình
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products are popular since many types of wireless services such as cellular and internets are available which gives the consumer the flexibility of working while they are away from the physical resources. World is going wireless but you need a physical power source as after some time as no in-built battery can keep the electronic gadget running for ever. The day is not far away when we all will be able to charge mobile computing‚ communications and other devices wirelessly. The product will allow
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ACCT 503 – AT&T Case 1. Describe the cost behavior in the wireless industry. What are the implications of this cost behavior for cost-volume-profit (CVP) relationships? The term cost behavior is used to describe whether a cost changes as output changes. In this case the costs are tightly shielded. In order to describe the cost behavior of the industry‚ we have to study the process that results in cost incurrence. Based on the information in the AT&T case‚ the industry features a high proportion
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All-in-1 / CISSP All-in-One / Harris / 5712-1 CHAPTER Becoming a CISSP 1 This chapter presents the following: • The reasons to become a CISSP • What the CISSP exam entails • What the Common Body of Knowledge contains • The history of (ISC)2 and the CISSP exam • Recertification requirements • An assessment test to gauge your current security knowledge This book is intended to welcome you to the exciting world of security and start you on a new path toward obtaining your CISSP
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