is around 32‚000 bytes. 2. In the Results Browser‚ bring up the Global TCP statistics for Delay (sec) and Segment Delay sec). In a short paragraph‚ comment on the delay graph. 3. Overlay the statistics for Client Received Segment Ack Number and Sent Segment Ack Number. Zoom until you see a definite separation and shapes as below. Write a short paragraph explaining why the client numbers are so different from the server numbers and a description of what is happening. 4. Given the configuration
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the significance of the TCP 3-way handshake? A 3-way handshake allows a connection to be created between a client and server. The client sends a SYN requesting a connection to the server‚ then the server sends a SYN-ACK back to acknowledge the request‚ then the client send an ACK to acknowledge the connection to the server. 8. What is the purpose of the Cisco discovery protocol (CDP)? CDP is used to share information about directly connected Cisco devices‚ including IP addresses and operating
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Understanding Congestion and SCTP Multihoming with Cisco ITP and Mobile Vendor MSC Troubleshooting Guide July 20‚ 2009 Troubleshooting Guide Contents 1. Congestion Problem Analysis ................................................................................................................................ 3 1.1 Congestion Problem ........................................................................................................................................... 3 1.2 Congestion
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establishes a set of rules or guidelines for establishing the connection. 6. What three packets are exchanged between two hosts when establishing a TCP connection? i. SYN – (Synchronizing Packet) ii. SYN ACK – (Synchronizing Acknowledgement Packet) iii. ACK– (Acknowledgement Packet) 10. What is a connectionless protocol? Give an example. i. UDP (User Datagram Protocol) Protocol is a connectionless protocol. ii. UDP packets are transported over the network without
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for this issue. As a result‚ you may get some packets timing out and being resent by the server causing duplicate packets to be sent‚ all while awaiting ACK arrival even though there may not have actually been any failure. Then there are extra packets on the network trying to arrive while this is occurring. These duplicate packets‚ or duplicate ACKs‚ need to be handled in order to keep the file transfer from becoming exponentially larger each time there was some sort of issue.
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Today is the age of computer and internet. More and more people are creating their own websites to market their products and earn more profit from it. Having your own website will definitely help you in getting more customer purchasing your products but at the same time you can also also attract hackers to play around with your site. If you have not taken enough care to protect your site from hackers then your business can even come to an end because of these hackers. Before you hack into a system
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Footprinting The phases of an attack 1. Reconnaissance Information gathering‚ physical and social engineering‚ locate network range 2. Scanning - Enumerating Live hosts‚ access points‚ accounts and policies‚ vulnerability assessment 3. Gaining Access Breech systems‚ plant malicious code‚ backdoors 4. Maintaining Access Rootkits‚ unpatched systems 5. Clearing Tracks IDS evasion‚ log manipulation‚ decoy traffic Information Gathering 1. Unearth initial information What/ Who is
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IEEE 80211n By Md Mahfuzur Rahman Bosunia Department of Information and Communications Engineering (ICE)‚ Hankuk University of Foreign Studies (HUFS) Introduction To meet up the demand for higher performance of today’s applications e.g.‚ online gaming‚ streaming audio video and different multimedia contents in wireless local area networks‚ the institute of Electrical and Electronics Engineers approved several WLAN standards with varying speed and service delivery. The objective of IEEE Task
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Chapter 7 Wireless Networks I ITM 4272 1) The most serious problem with wireless transmission in WLANs is ________. A) inverse square law attenuation B) absorptive attenuation C) shadow zones D) multipath interference Answer: D 2) What propagation problem becomes worse as frequency increases? A) Absorptive attenuation. B) Electromagnetic interference. C) Both A and B D) Neither A nor B Answer: A 3) The total range of possible 802.11 WLAN frequencies in the 2.4 GHz band constitutes
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Welcome back to the Lab Programme! In this lab‚ we’ll investigate the behavior of TCP in detail. We’ll do so by analyzing a trace of the TCP segments sent and received in transferring a 150KB file (containing the text of Lewis Carrol’ s Alice’s Adventures in Wonderland) from your computer to a remote server. We’ll study TCP’s use of sequence and acknowledgement numbers for providing reliable data transfer; we’ll see TCP’s congestion control algorithm – slow start and congestion avoidance – in
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