Exercise 3 1. Describe what are the packet, the packet communication, and motivations using the packet in computer communications. 2. (1) An ASCII coded.

Slides:



Advertisements
Similar presentations
Packets, Frames & Error Detection. Packet Concepts A packet is a small block of data. Networks which use packets are called packet networks or packet-
Advertisements

EEC-484/584 Computer Networks
© 2007 Pearson Education Inc., Upper Saddle River, NJ. All rights reserved.1 Computer Networks and Internets with Internet Applications, 4e By Douglas.
EEC-484/584 Computer Networks Lecture 6 Wenbing Zhao
CSCI 4550/8556 Computer Networks Comer, Chapter 7: Packets, Frames, And Error Detection.
EEC-484/584 Computer Networks Lecture 12 Wenbing Zhao Cleveland State University
The Data Link Layer Chapter 3. Position of the data-link layer.
Long distance communication Multiplexing  Allow multiple signals to travel through one medium  Types Frequency division multiplexing Synchronous time.
CS335 Networking & Network Administration Wednesday, April 7 PacketsPackets, Frames, and Error DetectionFramesError Detection.
EEC-484/584 Computer Networks Lecture 13 Wenbing Zhao
1 Part II: Packet Transmission Packets on a Network Packets, Frames, LAN, WAN, Hardware Addresses, Bridges, Switches, Routing and Protocols Fall 2005 Qutaibah.
EEC-484/584 Computer Networks Lecture 7 Wenbing Zhao (Part of the slides are based on materials supplied by Dr. Louise Moser at UCSB and.
Unit 1 Protocols Learning Objectives: Understand the need to detect and correct errors in data transmission.
Error Detection/Correction Section 1.7 Section 3.9 Bonus Material: Hamming Code.
Synchronous - Asynchronous Data Transmission. Asynchronous ► The sender and receiver are not Synchronised. ► The sender sends only one character at a.
Aloha Aloha What you see: What the computer sees: binary number columns binary number columns
Error Detection and Correction
Core 3: Communication Systems. There are three terms that we will consider in relation to the speed of communication. Bits per second (bps) Baud Rate.
Data Link Layer - 1 Dr. Sanjay P. Ahuja, Ph.D. Fidelity National Financial Distinguished Professor of CIS School of Computing, UNF.
CSC 335 Data Communications and Networking Lecture 5: Error Detection, Error Correction, and Data Security Dr. Cheer-Sun Yang.
Integrity in Data Communications Packets, Frames and Error Detection.
CIT 307 Online Data Communications Error Detection Module 11 Kevin Siminski, Instructor.
Part 2: Packet Transmission Packets, frames Local area networks (LANs) Wide area networks (LANs) Hardware addresses Bridges and switches Routing and protocols.
1 Part III Packet Transmission Chapter 7 Packets, Frames, and Error Detection.
1 Packets, Frames, and Error Detection. 2 The Problem Cannot afford individual network connection per pair of computers Reasons –Installing wires consumes.
Data Link Layer : Services, Framing, Error Detection and Correction2.
ECE453 – Introduction to Computer Networks Lecture 4 – Data Link Layer (I)
AS Computing Data Transmission and Networks. Transmission error Detecting errors in data transmission is very important for data integrity. There are.
Communication Systems 3.1) Characteristics of a Communication System.
Chapter 7 - Packets, Frames and Error Detection 1. Concepts of Packets 2. Motivation for Packet Switching 3. Framing 4. Frame Formats 5. Transmission Errors.
1 Chapter 7 Switching, Packets, Frames, Parity, Checksums, and CRCs.
Error Detection.
SEPT, 2005CSI Part I.2 Packets, Frames, Parity, Checksums, and CRCs Dr. R.L. Probert, SITE, University of Ottawa.
Longitudinal redundancy check
Digital Signals and Digital Encoding. Digital Encoding unipolar digital signal – high = +v – low = 0 bipolar digital signal – high = +v – low = -v time.
1 Kyung Hee University Error Detection and Correction.
Error Correction and Flow Control Martin Weiss. Slide 2 Objectives of this Meeting u Describe different flow control techniques u Describe the major error.
Data Link Layer 1. 2 Single-bit error 3 Multiple-bit error 4.
ERROR DETECTION AND CORRECTION Chapter 8 Data Communications & Networking ERROR DETECTION AND CORRECTION Chapter 8 First Semester 2007/2008.
Computer Network Lab. 1 9 장 Error Detection and Correction 9.1 Types of Errors 9.2 Detection 9.3 Error Correction 9.4 요약.
COMPUTER NETWORKS CS610 Lecture-4 Hammad Khalid Khan.
CS4470 Computer Networking Protocols
Simple Parity Check The simplest form of error detection is the parity check used with ASCII codes, originally on asynchronous modem links Each 7 bit ASCII.
The University of Adelaide, School of Computer Science
ERROR DETECTION AND CORRECTION
Data Link Layer.
Part III. Data Link Layer
Error Detection and Correction
Character coding schemes
OCR AS Level F451: Data transmission
Chapter 7 Packets, Frames, and Error Detection
Data Link Layer What does it do?
Even/odd parity (1) Computers can sometimes make errors when they transmit data. Even/odd parity: is basic method for detecting if an odd number of bits.
Data Link Layer.
Chapter 3 – Part 1 The Data Link Layer.
Computer Networks Bhushan Trivedi, Director, MCA Programme, at the GLS Institute of Computer Technology, Ahmadabad.
Chapter 9 Error Detection and Correction
DATA COMMUNICATION Lecture-35.
The Data Link Layer Chapter
COMPUTER NETWORKS CS610 Lecture-6 Hammad Khalid Khan.
DATA COMMUNICATION Lecture-33.
Packets, Frames, Parity, Checksums, and CRCs
EEC-484/584 Computer Networks
COMPUTER NETWORKS CS610 Lecture-5 Hammad Khalid Khan.
Chapter 9 Error Detection and Correction
Packets, Frames, Parity, Checksums, and CRCs
Error Detection and Correction
Switching, Packets, Frames, Parity, Checksums, and CRCs
Data Link Layer. Position of the data-link layer.
Presentation transcript:

Exercise 3 1. Describe what are the packet, the packet communication, and motivations using the packet in computer communications. 2. (1) An ASCII coded data block to be sent as the following: Draw its BSC frame with byte stuffing. (2) Bit stuff the following data: 00111111111111001011111011 3. (1) Find the even and odd parity check for a 7-bit data: 1001011. (2) Find the even parity check for each ASCII code of the word “packet”. 4. Find the 8 bit (v=8) LRC of the data: 1001 0011 1001 0011 1001 1000 0100 1101 5. Find the 16 bit (v=16) checksum of the data: 1001 0011 1001 0011 1001 1000 0100 1101 esc F r a m e eot B y t e soh