IEEE JOURNAL ON SELECTED AREAS IN COMMUNICATIONS‚ VOL. 18‚ NO. 3‚ MARCH 2000 535 Performance Analysis of the IEEE 802.11 Distributed Coordination Function Giuseppe Bianchi Abstract—Recently‚ 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 (CSMA/CA) scheme with binary slotted exponential
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STRATHMORE UNIVE ERSITY FACULT OF INFO TY ORMATION TECHNOLOGY ACHELOR O SCIENC IN TELEC OF CE COMMUNIC CATIONS BA BTC 120 Basic Dat and Voice Communica 02: ta ations DATE: 13th March 20 3 012 Instructio ons: Answer q question 1 and any other t questions d two s All Quest tions carry 20 marks each HRS TIME: 2 H QUESTIO 1 (COMPULSORY) ON a. Match the followin functions t a layer of th OSI model h ng to he i. ii. iii. iv. v. (5 Marks) Reliable pr rocess-to-process
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Introduction to Network Simulator NS2 Teerawat Issariyakul • Ekram Hossain Introduction to Network Simulator NS2 123 Teerawat Issariyakul TOT Public Company Limited 89/2 Moo 3 Chaengwattana Rd. Thungsonghong‚ Laksi Bangkok‚ Thailand 10210 teerawas@tot.co.th iteerawat@hotmail.com Ekram Hossain Department of Electrical & Computer Engineering University of Manitoba 75A Chancellor’s Circle Winnipeg MB R3T 5V6 Canada ekram@ee.umanitoba.ca ISBN: 978-0-387-71759-3 DOI: 10.1007/978-0-387-71760-9
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Part 1 - Flow Control Lab Objective To observe common flow control and error control mechanisms used in networks. You will examine how TCP works in order to demonstrate the method it uses to control the rate of transmission or flow control. All protocols have methods to assure that transmitted information will not overrun the receiver. We will watch the sliding windows form and grow through the process of slow start. Explanation and Background The TCP/IP Protocol Suite has two protocols at
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label “##.##.##.## is at xx:xx:xx:xx:xx:xx‚ where ##.##.##.## is the default gateway IP address. From the information contained in the ARP Reply‚ write down the MAC address of the Default Gateway 00:0c:29:60:e4:c7 Expand the details of a DHCP ACK frame and answer the following questions. DHCP Client UDP Port # 67 DHCP Server UDP Port # 68 Client IP Address 10.254.104.100 DHCP Server IP Address 10.254.104.1 Router IP Address 10.254.104.1 DNS Sever IP Address 10.254.104.1 DHCP Lease Time 30
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TCP Congestion Control Taoufik#1‚ Kamrul#2‚ Rifat#3 #EECS Department North South University 1taoufikul_islam@yahoo.com 2khshouharda@yahoo.com 3adnan_fazal18@yahoo.com Abstract Considerable interest has arisen in congestion control through traffic engineering. The goal of congestion control is to avoid congestion in network elements. A network element is congested if it is being offered more traffic than it can process. To detect such situations and to neutralize them we should monitor traffic
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Eating right and participating in physical activities‚ regardless of the type‚ are important aspects of maintaining overall health and fitness. - also have need rest and sufficient sleep - nothing robs us of vitality and health faster than l ack of sleep - healthy to relax and meditate daily. - By practicing yoga - Stress reduction is one of the most important thing - improve our health and looks d) We also need to observe personal hygiene and cleanliness. This means we ought to be
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CHEMALITE‚ INC (B) Executive Summary: Bennett Alexander‚ a chemical engineer founded Chemalite‚ Inc. in late 1990. The company was set up to manufacture and sell the Chemalite. The projected financial statements for the year 1992 were made to study the performance of the company in March 1991. The balance sheet and income statement of current year and projected year were provided. | |December 31‚ 1991 (Actual) |December
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CHAPTER 1 INTRODUCTION In this project‚ the wifi hotspot is implemented using HSDPA because of its features like Hybrid ARQ ‚ Adaptive modulation and coding‚ High speed downlink shared channel. This features enhance wifi hotspots to support an evolution towards more sophisticated network and multimedia services‚ the main target of HSDPA is to increase user peak data rates‚ quality of service‚ and to generally improve spectral efficiency for downlink asymmetrical services. HSDPA can achieve
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350CT Jacob Woodfield SID: 3098774 350CT Coursework Part A: Secure Network Design Introduction Dear XYZ Ltd.‚ My name is Jacob Woodfield and I am writing to you on behalf of Coventry Security Solutions‚ with whom you recently made contact with to request a security audit of your computer systems. Firstly‚ I would like to congratulate you on a very wise choice in deciding to have a security audit take place of your company. Last year 87% of small businesses had a security breach
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