CNT 4513 Study Guild Note: This study guild also include the material covered before midterm for completeness. You can focus on Chapter 4 and 5 Chapter 1 1. Internet: largest system of interconnected computer networks a) Network edge: end system and access network b) Network core: packet switching (vs. circuit switching) 2. Network Performance a) Delay: Processing delay‚ queuing delay‚ transmission delay‚ propagation delay b) Throughput: bottleneck link 3. Protocol
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Error Detection and Correction Transmission of data through a noisy medium inevitably introduces errors through interference by changing one or more bits. There are two types of errors‚ in single bit errors‚ a 0 may be turned into a 1 or vice versa. In real world conditions‚ most interference introduce burst errors where two or more bits are switched from a 0 to a 1 and vice versa. Types of Errors 1. Single-Bit Error – a single bit is switched from a 0 to a 1 or a 1 to a 0 2. Burst Error
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questions. Question 1 How long from the time the client issued the initial SYN did it take the server to answer with the SYN-ACK? - 0.000187000 secs ‚ Epoch time is 1338762701.1013955000 Question 2 In what frame is the first SYN that was issued? - Occurs in frame 3 ‚2 and 224 after adding the filters Question 3 How long did it take the client to issue the ACK to the SYN-ACK? - 0.027910 secs Question 4 How long did it take the client to issue the first GET after the TCP 3-way handshake was completed
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Contents We have seen an example of use of finite automata in describing the operation of a simplified version of vending machine. Many other systems operating in practice can also be modeled by finite automata such as control circuits of computers‚ computer network communication protocols‚ lexical analysers for compilers etc. Many of those systems fall into the class of systems called reactive system. A reactive system is a system that changes its actions‚ outputs and conditions/status in response
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Your Name NETW202‚ Professor’s Name Current Date Lab #3 Lab Report Section I: Watch the videos on the UTP cabling‚ read your course material and answer the questions below. Add in graphics from the internet to enhance your answers and be sure to cite your references. (Each question is worth 1 point each) 1.What is meant by the term “pinout”? 2.What are the following cable types used for and how are they made? How are they different? Crossover cable Rollover cable Straight through cable
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Computer Networking: A Top-Down Approach Featuring the Internet‚ 4th Edition Solutions to Review Questions and Problems Version Date: June 21‚ 2007 This document contains the solutions to review questions and problems for the 4th edition of Computer Networking: A Top-Down Approach Featuring the Internet by Jim Kurose and Keith Ross. These solutions are being made available to instructors ONLY. Please do NOT copy or distribute this document to others (even other instructors). Please do not post
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Question Bank on Internet Technology Specially designed for Sixth Semester B.Sc. (IT) Students These notes are prepared for student’s personal use. Any commercial use of this material is strictly prohibited. Guide to solution code |Sr. No. |Chapter | |Starting with: |
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receiver should request next one which is 3. If assume there is 8 sequence numbers N=0‚ 1‚ 2‚3‚4 so the size of transmitter sliding window is (2N -1). Receiver is not going to get frame 7 till sender get the “Ack” of frame 0 otherwise if we send all 0 to 4 and by the accident sender could not get the”Ack” of frame 0 when the timer expires frame 0 will be retransmitted and since receiver’s window is pointing to the next 0-4 frames and expecting new frame 0‚ is going to take it as the new frame0 which is
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/ RPL 6LoWPAN CSMA / link-layer bursts ContikiMAC IEEE 802.15.4 A Low-Power CoAP for Contiki 2 ContikiMAC Radio on D Data frame A ACK frame Sender D D D D A Receiver Channel check D A Transmission detected Matthias Kovatsch – ETH Zürich A Low-Power CoAP for Contiki 3 Link-layer Bursts Radio on D Data frame A ACK frame Sender D D D D A D A D A D A Receiver Channel check D A D A D A D A Transmission detected Matthias Kovatsch
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Data Transport in Wireless Networks Akinniyi Ojo‚ Alireza Ranjbar‚ Bastian Arjun Shajit‚ Behzad Savabi‚ Misikir Gebrehiwot‚ Robin Babujee Jerome‚ Setareh Roshan‚ Swapnil Pande Department of Communication Engineering‚ Aalto University School of Electrical Engineering‚ Espoo‚ Finland Abstract— The popularity of wireless networks used to access the Internet is increasing immensely. With huge advancements in the field of wireless technology‚ the Internet has slowly moved from a traditional wired
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