Direct Link Networks. Nodes. Links. Outline Building Blocks Encoding
|
|
- Marshall Bryant
- 6 years ago
- Views:
Transcription
1 Direct Link Networks Outline Building Blocks Encoding Spring 2009 CSE Nodes Network adaptor Device driver Memory bottleneck CPU Cache Network adaptor (To network) Memory I/O bus Spring 2009 CSE Links Electromagnetic waves traveling at speed of light Frequency (Hertz, Hz) and wavelength (meters) f(hz) Radio Microwave Infrared UV X ray Gamma ray Coax Satellite Fiber optics AM FM TV Terrestrial microwave Spring 2009 CSE
2 Links Cables: Category 5 twisted pair Mbps 100m Thin-net coax Mbps 200m Thick-net coax Mbps 500m Multimode fiber 100 Mbps 2km Single-mode fiber Mbps 40km Leased lines: DS Mbps DS Mbps STS Mbps STS Mbps STS Mbps STS Gbps STS Gbps Spring 2009 CSE Cables Spring 2009 CSE Cables Spring 2009 CSE
3 Categories of Twisted Pair Cables Spring 2009 CSE Optical Fiber Each fiber consists of a thin strand of glass or transparent plastic encased in a plastic cover An optical fiber is used for communication in a single direction One end of the fiber connects to a laser or LED used to transmit light The other end of the fiber connects to a photosensitive device used to detect incoming light Spring 2009 CSE Optical Fiber Spring 2009 CSE
4 Links Last-mile links: POTS Kbps ISDN Kbps xdsl 16 Kbps-55.2 Mbps CATV Mbps Central office Mbps Kbps Local loop Subscriber premises Central office STS- N over fiber Neighborhood optical network unit VDSL at Mbps over feet of copper Subscriber premises Spring 2009 CSE Example: ADSL ADSL is the most widely deployed variant and the one that most residential customers use ADSL uses FDM to divide the bandwidth of the local loop into three regions one of the regions corresponds to traditional analog phone service, which is known as Plain Old Telephone Service (POTS) and two regions provide data communication Spring 2009 CSE Links Wireless links AMPS: Advanced Mobile Phone Systems PCS: Personal Communication Services GSM: Global System for Mobile Communication infrared: nm, 1 Mbps, 10m HIPERLAN: High Performance European Radio LAN IEEE Bluetooth WiMax Spring 2009 CSE
5 Encoding Signals propagate over a physical medium modulate electromagnetic waves e.g., vary voltage Encode binary data onto signals e.g., 0 as low signal and 1 as high signal known as Non-Return to zero (NRZ) Bits NRZ Spring 2009 CSE Problem: Consecutive 1s or 0s Low signal (0) may be interpreted as no signal Long strings of 0s or 1s lead to baseline wander Unable to recover clock Spring 2009 CSE Alternative Encodings Non-return to Zero Inverted (NRZI) make a transition from current signal to encode a one; stay at current signal to encode a zero solves the problem of consecutive ones Manchester transmit XOR of the NRZ encoded data and the clock only 50% efficient (bit rate = 1/2 baud rate) Spring 2009 CSE
6 Encodings (cont) 4B/5B every 4 bits of data encoded in a 5-bit code 5-bit codes selected to have no more than one leading 0 and no more than two trailing 0s thus, never get more than three consecutive 0s resulting 5-bit codes are transmitted using NRZI achieves 80% efficiency Spring 2009 CSE Encodings (cont) Bits NRZ Clock Manchester NRZI Spring 2009 CSE Manchester Encoding Spring 2009 CSE
7 4B/5B Spring 2009 CSE Framing Break sequence of bits into a frame Typically implemented by network adaptor Spring 2009 CSE Sentinel-based Approaches Header Body CRC Flag Address Control Protocol Payload Checksum Flag start frame with special pattern: Spring 2009 CSE
8 Approaches Counter-based include payload length in header e.g., DDCMP Count Header Body CRC problem: count field corrupted solution: catch when CRC fails Spring 2009 CSE Bit-oriented: HDLC Approaches Beginning sequence Header Body CRC Ending sequence uses for beginning and end, also sent during idle times for synchronization bit stuffing: when 5 consecutive 1s have been transmitted, sender inserts 0 Spring 2009 CSE Approaches Clock-based (SONET) each frame is 125us long e.g., SONET: Synchronous Optical Network STS-n (STS-1 = Mbps) Overhead Payload STS -1 STS -1 STS -1 9 rows 90 columns Hdr STS -3c Spring 2009 CSE
Data Link Networks. Hardware Building Blocks. Nodes & Links. CS565 Data Link Networks 1
Data Link Networks Hardware Building Blocks Nodes & Links CS565 Data Link Networks 1 PROBLEM: Physically connecting Hosts 5 Issues 4 Technologies Encoding - encoding for physical medium Framing - delineation
More informationOverview. Performance metrics - Section 1.5 Direct link networks Hardware building blocks - Section 2.1 Encoding - Section 2.2 Framing - Section 2.
Overview Performance metrics - Section 1.5 Direct link networks Hardware building blocks - Section 2.1 Encoding - Section 2.2 Framing - Section 2.3 Performance Metrics Bandwidth Amount of data that can
More informationCompSci 356: Computer Network Architectures. Lecture 4: Link layer: Encoding, Framing, and Error Detection Ref. Chap 2.2, 2.3,2.4
CompSci 356: Computer Network Architectures Lecture 4: Link layer: Encoding, Framing, and Error Detection Ref. Chap 2.2, 2.3,2.4 Xiaowei Yang xwy@cs.duke.edu Overview Review: link/network performance metrics
More informationHousekeeping. Fall /5 CptS/EE 555 1
Housekeeping Lab access HW turn-in Jin? Class preparation for next time: look at the section on CRCs 2.4.3. Be prepared to explain how/why the shift register implements the CRC Skip Token Rings section
More informationPoint-to-Point Links. Outline Encoding Framing Error Detection Sliding Window Algorithm. Fall 2004 CS 691 1
Point-to-Point Links Outline Encoding Framing Error Detection Sliding Window Algorithm Fall 2004 CS 691 1 Encoding Signals propagate over a physical medium modulate electromagnetic waves e.g., vary voltage
More informationECE 4450:427/527 - Computer Networks Spring 2017
ECE 4450:427/527 - Computer Networks Spring 2017 Dr. Nghi Tran Department of Electrical & Computer Engineering Lecture 5.1: Link Layer Dr. Nghi Tran (ECE-University of Akron) ECE 4450:427/527 Computer
More informationComputer Network. Direct Link Networks Reliable Transmission. rev /2/2004 1
Computer Network Direct Link Networks Reliable Transmission rev 1.01 24/2/2004 1 Outline Direct link networks (Ch. 2) Encoding Framing Error detection Reliable delivery Media access control Network Adapter
More informationDirect Link Networks. Lecture - Encoding & Framing 1. Areas for Discussion. Problems
Areas for Discussion Direct Link s Joseph Spring School of Computer Science 3COM0088 Computer Protocols & Architecture s Based on Chapter 2, Peterson & Davie, Computer s: A Systems Approach, 3 rd Ed Problems
More informationDirect Link Networks: Building Blocks (2.1), Encoding (2.2), Framing (2.3)
Direct Link Networks: Building Blocks (2.1), Encoding (2.2), Framing (2.3) ECPE/CS 5516: Computer Networks Originally by Scott F. Midkiff (ECpE) Modified by Marc Abrams (CS) Virginia Tech courses.cs.vt.edu/~cs5516
More informationCSCI-1680 Physical Layer Link Layer I Rodrigo Fonseca
CSCI-1680 Physical Layer Link Layer I Rodrigo Fonseca Based partly on lecture notes by David Mazières, Phil Levis, John Janno< Administrivia Snowcast milestone today! 4-7pm Sign up at http://tinyurl.com/cs168-calendar
More informationProblem Statement. Physical and Data Link Layer Overview. Five Tasks Encoding. Make two computers talk to each other
Physical and Data Link Layer Overview Problem Statement Make two talk to each other Kameswari Chebrolu Dept. of Electrical Engineering, IIT Kanpur Physical media transmit Analog signals Modulate/demodulate
More informationData Link Layer Overview
Data Link Layer Overview First of four classes on the data link layer Internet Architecture Bottom up: Physical: electromagnetic signals on the wire Link: data transfer between neighboring network elements
More informationL3: Building Direct Link Networks I. Hui Chen, Ph.D. Dept. of Engineering & Computer Science Virginia State University Petersburg, VA 23806
L3: Building Direct Link Networks I Hui Chen, Ph.D. Dept. of Engineering & Computer Science Virginia State University Petersburg, VA 23806 8/22/2016 CSCI 445 Fall 2016 1 Acknowledgements Some pictures
More informationCSIS Frequency Division Multiplexing. Basic Types of Multiplexing. Frequency Division Multiplexing. Frequency Division Multiplexing.
Multiplexing: combining information streams from multiple sources for transmission over a shared medium Demultiplexing: separating a combination back into individual information streams CSIS 4222 Ch 11:
More informationLinks. CS125 - mylinks 1 1/22/14
Links 1 Goals of Today s Lecture Link-layer services Encoding, framing, and error detection Error correction and flow control Sharing a shared media Channel partitioning Taking turns Random access Shared
More informationData Link Layer Overview
Data Link Layer Overview First of four classes on the data link layer Internet Architecture Bottom up: Physical: electromagnetic signals on the wire Link: data transfer between neighboring network elements
More informationData Link Layer Overview
Data Link Layer Overview First of four classes on the data link layer 9/9/2009 CSC 257/457 - Fall 2009 1 Internet Architecture Bottom-up: physical: electromagnetic signals on the wire link: data transfer
More informationDirect Link Networks. Framing. Lecture - Encoding & Framing 1. Problems. Areas for Discussion
Areas for Discussion Direct Link s Joseph Spring School of Computer Science 3COM0271 Computer Protocols & Architecture s Based on Chapter 2, Peterson & Davie, Computer s: A Systems Approach, 4 th Ed Problems
More informationData Link Layer Overview
Data Link Layer Overview : 9/7/2007 CSC 257/457 - Fall 2007 1 Internet Architecture Bottom-up: physical: electromagnetic signals on the wire link: data transfer between neighboring network elements network:
More informationIslamic University of Gaza Faculty of Engineering Department of Computer Engineering ECOM 4021: Networks Discussion. Chapter 2.
Islamic University of Gaza Faculty of Engineering Department of Computer Engineering ECOM 4021: Networks Discussion Chapter 2 Getting Connected Eng. Haneen El-Masry March, 2014 2.2 ENCODING Encoding the
More informationPhysical Layer Part 3
Physical Layer Part 3 Transmission Media Networks: Transmission Media 1 Transmission Media Transmission medium:: the physical path between transmitter and receiver. Repeaters or amplifiers may be used
More informationLecture 3: Modulation & Layering"
Lecture 3: Modulation & Layering" CSE 123: Computer Networks Alex C. Snoeren HW 1 out Today, due 10/09! Lecture 3 Overview" Encoding schemes Shannon s Law and Nyquist Limit Clock recovery Manchester, NRZ,
More informationData Communication & Computer Networks INFO
Data Communication & Computer Networks INFO Instructor: Dr. A. SARI Department: Management Information Systems Course Code: MIS 305 Academic Term: 2013/2014 Fall Title: Data Communication & Computer Networks
More informationPhysical Layer Part 3
Physical Layer Part 3 Transmission Media Computer Networks: Transmission Media 1 Transmission Media Transmission medium:: the physical path between transmitter and receiver. Repeaters or amplifiers may
More informationPhysical Layer Part 3
Physical Layer Part 3 Transmission Media Networks: Transmission Media 1 Transmission Media Transmission medium:: the physical path between transmitter and receiver. Repeaters or amplifiers may be used
More informationChapter 8 OSI Physical Layer
Chapter 8 OSI Physical Layer Upper OSI layer protocols prepare data from the human network for transmission to its destination. The Physical layer controls how data is placed on the communication media.
More informationTwelfth Edition. Chapter 8: Wired and Wireless Communication. Copyright 2012 Pearson Education, Inc. Publishing as Prentice Hall 1
Computers Are Your Future Twelfth Edition Chapter 8: Wired and Wireless Communication Copyright 2012 Pearson Education, Inc. Publishing as Prentice Hall 1 Wired and Wireless Communication Copyright 2012
More informationCOMPUTER NETWORKS UNIT I. 1. What are the three criteria necessary for an effective and efficient networks?
Question Bank COMPUTER NETWORKS Short answer type questions. UNIT I 1. What are the three criteria necessary for an effective and efficient networks? The most important criteria are performance, reliability
More informationComputer Networks and Internet
Computer Networks and Internet Objectives Computer Networks Internet 2 Computer Networks Introducing Computer Networks A computer network consists of two or more computers linked together to exchange data
More informationMultiplexing (Recap)
Multiplexing (Recap) Multiplexing How to transfer data between two sites once there is a digital link between them? Analog to Digital (A2D) conversion Human voice is a continuous signal in the range 0-4
More informationCSMC 417. Computer Networks Prof. Ashok K Agrawala Ashok Agrawala Set 4. September 09 CMSC417 Set 4 1
CSMC 417 Computer Networks Prof. Ashok K Agrawala 2009 Ashok Agrawala Set 4 1 The Data Link Layer 2 Data Link Layer Design Issues Services Provided to the Network Layer Framing Error Control Flow Control
More informationPhysical Layer V What does the physical layer provide?
SEMESTER 1 Chapter 8 Physical Layer V 4.0 90 Points 8.1.1 What does the physical layer provide? What are the four elements of delivering frames across the media? 8.1.2 What are the three basic forms of
More informationTransmission Media. Criteria for selection of media. Criteria for selection of media 2/17/2016. Chapter 3: Transmission Media.
Chapter 3: Transmission Media Marks- 20 Transmission Media Transmission media carries the information from sender to receiver. Different types of cables or waves to transmit data. Data is transmitted through
More informationThe data transmission mode describes the direction of data flow. It is either simplex, half duplex or full duplex.
Data transmission Data transmission on a network involves serial transmission. It transfers data by sending one bit at a time through a single line. All data on a network is transferred using a data transmission
More informationCCNA 1 Capítulo 8 OSI Physical Layer. 2004, Cisco Systems, Inc. All rights reserved.
CCNA 1 Capítulo 8 OSI Physical Layer 1 Physical Layer Protocols & Services There are three basic forms of network media on which data is represented: Copper cable Fiber Wireless 2 Physical Layer Protocols
More informationIntegrated t Services Digital it Network (ISDN) Digital Subscriber Line (DSL) Cable modems Hybrid Fiber Coax (HFC)
Digital Local Loop Technologies Integrated t Services Digital it Network (ISDN) Handles voice and data Relatively l high h cost for low bandwidth (Skip) Digital Subscriber Line (DSL) Cable modems Hybrid
More informationObjectives. Learn how computers are connected. Become familiar with different types of transmission media
Objectives Learn how computers are connected Become familiar with different types of transmission media Learn the differences between guided and unguided media Learn how protocols enable networking 2 Objectives
More informationChapter 3. Wired and Wireless Communication. What You Will Learn... Computers Are Your Future. What You Will Learn...
What You Will Learn... Computers Are Your Future Chapter 3 The definition of bandwidth The bandwidth needs of a typical user How modems change digital signals into analog Transmission media and methods
More informationCS 640 Lecture 4: 09/11/2014
CS 640 Lecture 4: 09/11/2014 A) Bandwidth-delay product B) Link layer intro C) Encoding, Framing, Error Detection D) Multiple access Ethernet A. Bandwidth-delay product This in the above example is C *
More informationComputers Are Your Future Tenth Edition
Computers Are Your Future Tenth Edition Chapter 3: Wired & Wireless Communication Copyright 2009 Pearson Education, Inc. Publishing as Prentice Hall 1 All rights reserved. No part of this publication may
More informationLink Layer (L2) Review
Link Layer (L2) Review 188lecture2.ppt Pasi Lassila 1 Problem How to connect 2 (or more) computers directly to each other? physical cable? bit encoding, framing, error detection? reliable transfer mechanisms?
More informationComputer and Network Security
CIS 551 / TCOM 401 Computer and Network Security Spring 2009 Lecture 6 Announcements First project: Due: 6 Feb. 2009 at 11:59 p.m. http://www.cis.upenn.edu/~cis551/project1.html Plan for Today: Networks:
More informationTYPES OF COMPUTER NETWORKS
TYPES OF COMPUTER NETWORKS What is a 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.
More informationend systems, access networks, links circuit switching, packet switching, network structure
Chapter 1: roadmap 1.1 What is the Internet? 1.2 Network edge end systems, access networks, links 1.3 Network core circuit switching, packet switching, network structure 1.4 Delay, loss and throughput
More informationIntroduction to Information Technology Turban, Rainer and Potter John Wiley & Sons, Inc. Copyright 2005
Introduction to Information Technology Turban, Rainer and Potter John Wiley & Sons, Inc. Copyright 2005 Network and Telecommunications Basics Chapter Outline The telecommunications system Network services
More informationChapter 8: Multiplexing
NET 456 High Speed Networks Chapter 8: Multiplexing Dr. Anis Koubaa Reformatted slides from textbook Data and Computer Communications, Ninth Edition by William Stallings, 1 (c) Pearson Education - Prentice
More informationend systems, access networks, links circuit switching, packet switching, network structure
Introduction Chapter 1: roadmap 1.1 What is the Internet? 1.2 Network edge end systems, access networks, links 1.3 Network core circuit switching, packet switching, network structure 1.4 Delay, loss and
More informationChapter 9. High Speed Digital Access
Chapter 9 High Speed Digital Access 9-1 TELEPHONE NETWORK Telephone networks use circuit switching. The telephone network had its beginnings in the late 1800s. The entire network, which is referred to
More informationDr. Monir Hossen ECE, KUET
Dr. Monir Hossen ECE, KUET 1 Technology Roadmap and Standards Mobility 1995 2000 2005 2010+ High Speed Medium Speed 1G ( Analog ) 2G ( Digital ) CDMA/GSM/TDMA 3G (IMT 2000) CDMA2000 EV-DO Rev.A W-CDMA/HSDPA
More informationModems, DSL, and Multiplexing. CS158a Chris Pollett Feb 19, 2007.
Modems, DSL, and Multiplexing CS158a Chris Pollett Feb 19, 2007. Outline Finish up Modems DSL Multiplexing The fastest modems Last day, we say the combinations and phases used to code symbols on a 2400
More informationCSCI 466 Midterm Networks Fall 2011
CSCI 466 Midterm Networks Fall 2011 Name: This exam consists of 7 problems on the following 9 pages. You may use your single- sided hand- written 8 ½ x 11 note sheet and a calculator during the exam. No
More informationCompSci 356: Computer Network Architectures Lecture 3: Hardware and physical links References: Chap 1.4, 1.5 of [PD] Xiaowei Yang
CompSci 356: Computer Network Architectures Lecture 3: Hardware and physical links References: Chap 1.4, 1.5 of [PD] Xiaowei Yang xwy@cs.duke.edu Overview Lab overview Application Programming Interface
More informationIntroductory to Computer Networks Local Area Networks. Lecture 16 Fall Isfahan University of technology Dr.
Introductory to Computer Networks Local Area Networks Lecture 16 Fall 2010 Isfahan University of technology Dr. Faramarz Hendessi What is a LAN? Local area means: Private ownership freedom from regulatory
More informationIEEE 802 LANs SECTION C
IEEE 802 LANs SECTION C Outline of the Lecture Basic characteristics of LAN Topology Transmission Media MAC IEEE 802 LANs 802.3 - CSMA/CD based (Ethernet) 802.4 Token bus-based 802.5 Token ring-based Comparison
More informationLecture 2 Physical Layer - Multiplexing
DATA AND COMPUTER COMMUNICATIONS Lecture 2 Physical Layer - Multiplexing Mei Yang Based on Lecture slides by William Stallings 1 MULTIPLEXING multiple links on 1 physical line common on long-haul, high
More informationChapter 9 Introduction to Networks
Chapter 9 Introduction to Networks 9.1 Uses of a network Networks are used in many situations. We can see networks in places like offices, airports and factories. In fact we use networks in many situations
More informationCIS 551 / TCOM 401 Computer and Network Security. Spring 2007 Lecture 7
CIS 551 / TCOM 401 Computer and Network Security Spring 2007 Lecture 7 Announcements Reminder: Project 1 is due on Thursday. 2/1/07 CIS/TCOM 551 2 Network Architecture General blueprints that guide the
More informationProf. Shervin Shirmohammadi SITE, University of Ottawa. Design Technologies. Lecture 17: Prof. Shervin Shirmohammadi CEG
Lecture 17: Design Technologies Prof. Shervin Shirmohammadi SITE, University of Ottawa Prof. Shervin Shirmohammadi CEG 4185 17-1 Design Goals From the architecture and its components and simulation, we
More informationEthernet Technologies
Ethernet Technologies CCNA 1 v3 Module 7 NESCOT CATC 1 10 Mbps Ethernet Legacy Ethernet means: 10BASE5 10BASE2 10BASE-T Common features are: frame format timing parameters transmission process basic design
More information3 Chapter Introduction. 3.2 Copper Cable
3 Chapter 3 3.1 Introduction The Network Media is the device that physically carries the data from computer to computer. The three major types of network media are: Copper Cable Fiber-Optic Cable Wireless
More informationDCN Questions CHAPTER 1:- NETWORKING FUNDAMENTALS
DCN Questions CHAPTER 1:- NETWORKING FUNDAMENTALS Q1. What are the four fundamental Characteristics of Data Communication? On which effectiveness of data communication is depended? Q2. Define data communication?
More informationIt is the process of sharing data, programs, and information between two or more computers.
1 Communications It is the process of sharing data, programs, and information between two or more computers. Numerous applications depend on communication systems: E-mail Instant messaging (IM) Internet
More informationCMPE 344 Computer Networks Spring Getting Connected. Reading: Peterson and Davie, 2.1,
CMPE 344 Computer Networks Spring 2017 Getting Connected Reading: Peterson and Davie, 2.1, 2.5-2.7 Sources of slides: Computer networks: A systems Approach by Peterson and Davie, Morgan Kaufmann, 2010
More informationLinks Reading: Chapter 2. Goals of Todayʼs Lecture. Message, Segment, Packet, and Frame
Links Reading: Chapter 2 CS 375: Computer Networks Thomas Bressoud 1 Goals of Todayʼs Lecture Link-layer services Encoding, framing, and error detection Error correction and flow control Sharing a shared
More informationITP 140 Mobile Applications Technologies. Networks
ITP 140 Mobile Applications Technologies Networks A First Look Under the Hood 2 3 Communication Channels Mediums for transporting data from one system to another Physical Twisted Pair (CAT-3, CAT-5/6)
More informationMessage, Segment, Packet, and Frame Link-layer services Encoding, framing, error detection, transmission control Error correction and flow control
Links EE 122: Intro to Communication Networks Fall 2007 (WF 4-5:30 in Cory 277) Vern Paxson TAs: Lisa Fowler, Daniel Killebrew & Jorge Ortiz http://inst.eecs.berkeley.edu/~ee122/ Announcements Homework
More informationInternet Access Technologies
Lecture 4: Local Loop Technologies, Internet Access and Leased Lines Dr. Mohammed Hawa Electrical Engineering Department University of Jordan EE426: Communication Networks Internet Access Technologies
More informationChapter Three. Conducted and Wireless Media. Data Communications and Computer Networks: A Business User's Approach Seventh Edition
Chapter Three Conducted and Wireless Media Data Communications and Computer Networks: A Business User's Approach Seventh Edition After reading this chapter, you should be able to: Outline the characteristics
More informationAn Overview. 12/22/2011 Hardev Singh Manager (BB-NOC) MTNL Delhi
Broadband Technology An Overview 12/22/2011 Hardev Singh Manager (BB-NOC) MTNL Delhi 1 1 2 3 4 5 6 7 8 9 * 8 # 1 2 3 4 5 6 7 8 9 * 8 # Typical Narrowband (voice) setup Local Exchange PSTNSwitch telephone
More informationGoals of Today s Lecture. Adaptors Communicating
Goals of Today s Lecture EE 122: Link Layer Ion Stoica TAs: Junda Liu, DK Moon, David Zats http://inst.eecs.berkeley.edu/~ee122/ (Materials with thanks to Vern Paxson, Jennifer Rexford, and colleagues
More informationLecture 4. Data Transmission Modes and Switching. Data Transmission & Switching 1-1
Lecture 4 Data Transmission Modes and Switching Data Transmission & Switching 1-1 Agenda Introduction to Data Transmission Modes Parallel and Serial Transmission Transmission Media Guided and unguided
More informationNetworks. Computer Technology
Networks Computer Technology Network Two or more computers and other devices (printers or scanners) that are connected, for the purpose of sharing data and programs Advantages of Networks Communication
More informationChapter 12. Network Organization and Architecture
Chapter 12 Network Organization and Architecture Chapter 12 Objectives Learn the basic physical components of networks. Become familiar with routing protocols. 2 Computer networks are often classified
More informationToday. Last Time. Motivation. CAN Bus. More about CAN. What is CAN?
Embedded networks Characteristics Requirements Simple embedded LANs Bit banged SPI I2C LIN Ethernet Last Time CAN Bus Intro Low-level stuff Frame types Arbitration Filtering Higher-level protocols Today
More informationLAN. CS 4/55231 Internet Engineering. Kent State University Dept. of Computer Science
1 CS 4/55231 Internet Engineering Kent State University Dept. of Computer Science LECT-4A4 LAN 1 2 LAN Topologies-1 In the last class we saw how two computers can connect to each other. In this class we
More informationTransmission Media :- It can be broadly classified into two types
Transmission Media :- It can be broadly classified into two types - Guided Transmission Media:- in this type of media, a physical path is established between source and destination. The signal or electrical
More informationCOMPUTER NETWORK. PREPARED BY: DHAVAL R. PATEL Page 1. Q.1 Explain IP address. IP address is unique number of network device in network.
Q.1 Explain IP address. IP address is unique number of network device in network. Two IP address could not be same. Using this network we can connect the devices with each other. It is separated by dot(.).
More informationAnnouncements. TAs office hours: Mohamed Grissa: Mohamed Alkalbani:
Announcements TAs office hours: Mohamed Grissa: grissam@oregonstate.edu Tuesday: 4-5 Friday: 11-12 Mohamed Alkalbani: alkalbmo@oregonstate.edu Wednesday: 11-12 Thursday: 11-12 Lecture slides: Will be posted
More informationCommunication Networks
Communication Networks Chapter 3 Multiplexing Frequency Division Multiplexing (FDM) Useful bandwidth of medium exceeds required bandwidth of channel Each signal is modulated to a different carrier frequency
More informationCSE 123A Computer Networks
CSE 123A Computer Networks Winter 2005 Lecture 4: Data-Link I: Framing and Errors Some portions courtesy Robin Kravets and Steve Lumetta Last time How protocols are organized & why Network layer Data-link
More informationNetwork basics. Unit objectives Describe the basic components of a network Identify characteristics of network technologies Analyze the OSI model
Network basics Unit objectives Describe the basic components of a network Identify characteristics of network technologies Analyze the OSI model Topic A Topic A: Network concepts Topic B: Network architectures
More informationData Link Layer. Overview. Links. Shivkumar Kalyanaraman
Data Link Layer shivkuma@ecse.rpi.edu http://www.ecse.rpi.edu/homepages/shivkuma 1-1 Based in part upon the slides of Prof. Raj Jain (OSU) Overview The data link layer problem Error detection and correction
More informationChapter 1: introduction
Chapter 1: introduction our goal: v get feel and terminology v more depth, detail later in course v approach: use Internet as example overview: v what s the Internet? v what s a protocol? v edge; hosts,
More informationCOMP/ELEC 429/556 Introduction to Computer Networks
COMP/ELEC 429/556 Introduction to Computer Networks Encoding and Framing Some slides used with permissions from Edward W. Knightly, T. S. Eugene Ng, Ion Stoica, Hui Zhang T. S. Eugene Ng eugeneng at cs.rice.edu
More informationFrom Signals to Packets Computer Networking. Link Layer: Implementation. Network Delay. 06-datalink.ppt, , Fall
From Signals to Packets 15-441 Computer Networking Lecture 6 - Coding and Error Control Analog Signal Digital Signal Bit Stream 0 0 1 0 1 1 1 0 0 0 1 Packets 0100010101011100101010101011101110000001111010101110101010101101011010111001
More informationSolution of Exercise Sheet 2. (Layers of Reference Models)
Solution of Exercise Sheet 2 Exercise 1 (Layers of Reference Models) 1. Fill in the names of the layers of the reference models in the figure. 2. Assign to technical terms Frames, Packets, Segments and
More informationComputer Networking. Lecture 4 - Coding and Error Control
15-441 Computer Networking Lecture 4 - Coding and Error Control From Signals to Frames Analog Signal Digital Signal Bit Stream 0 0 1 0 1 1 1 0 0 0 1 Packets 0100010101011100101010101011101110000001111010101110101010101101011010111001
More informationFrom Signals to Packets Computer Networking. Link Layer: Implementation. Datalink Functions. Lecture 5 - Coding and Error Control
From Signals to Packets 15-441 Computer Networking Lecture 5 - Coding and Error Control Analog Signal Digital Signal Bit Stream 0 0 1 0 1 1 1 0 0 0 1 Packets 0100010101011100101010101011101110000001111010101110101010101101011010111001
More informationNetwork Fundamentals Chapter 8 Modified by Tony Chen 05/20/2008
Physical Layer Network Fundamentals Chapter 8 Modified by Tony Chen 05/20/2008 ITE I Chapter 6 2006 Cisco Systems, Inc. All rights reserved. Cisco Public 1 Objectives In this chapter, you will learn to:
More informationChapter 4: Communication Technology. Solutions
Chapter 4: Communication Technology Solutions Summative Assessment Multiple-Choice Questions (MCQs) 1. Two examples of network are telephone and. a. Radio b. Transmission c. Globe d. All of the above 2.
More informationFrequency: it refers to the number of periods in 1 s. It is formally expressed in Hertz (Hz)
Chapter2: Peak amplitude: it is the absolute value of the highest intensity. Frequency: it refers to the number of periods in 1 s. It is formally expressed in Hertz (Hz) Phase: it describes the position
More informationMedium Access Control
Medium Access Control Mark Handley UCL Computer Science CS 3035/GZ01 Context: OSI Layer 2, S&K Link Layer email WWW phone...! SMTP HTTP RTP...! TCP UDP!! IP!! ethernet PPP! CSMA async sonet...! copper
More informationLAN Protocols. Required reading: Forouzan 13.1 to 13.5 Garcia 6.7, 6.8. CSE 3213, Fall 2015 Instructor: N. Vlajic
1 LAN Protocols Required reading: Forouzan 13.1 to 13.5 Garcia 6.7, 6.8 CSE 3213, Fall 2015 Instructor: N. Vlajic What is LAN? 2 Local Area Network (LAN) properties private ownership freedom to choose/change/upgrade
More informationSolution of Exercise Sheet 1
Solution of Exercise Sheet 1 Exercise 1 (Data Rate and Latency) The Prussian semaphore system (dt. Preußischer optischer Telegraf ) was a telegraphic communications system used between Berlin and Koblenz
More informationWide Area Networks (WANs) Slide Set 6
Wide Area Networks (WANs) Slide Set 6 Wide Area Networks (WANs) WAN Purposes Link sites (usually) within the same corporation Remote access for individuals who are off-site Internet access for individuals
More informationLecture 15: Multiplexing (2)
Lecture 15: Multiplexing (2) Last Lecture Multiplexing (1) Source: chapter 8 This Lecture Multiplexing (2) Source: chapter8 Next Lecture Circuit switching (1) Source: chapter9 Digital Carrier Systems Hierarchy
More information06/02/2006. Local & Metropolitan Area Networks 1. INTRODUCTION. Why Study Local and Metropolitan Area Networks? ACOE322. Lecture 1 Introduction
Local & Metropolitan Area Networks ACOE322 Lecture 1 Introduction 1 1. INTRODUCTION In this section we will cover : 1. Overview of data communications and networking 2. Definition and overview of LANs,
More informationITP 140 Mobile Applications Technologies. Networks
ITP 140 Mobile Applications Technologies Networks A First Look Under the Hood 2 3 Communication Channels Mediums for transporting data from one system to another Physical Twisted Pair (CAT-3, CAT-5/6)
More informationA+ Guide to Managing & Maintaining Your PC, 8th Edition. Chapter 16 Networking Types, Devices, and Cabling
A+ Guide to Managing & Maintaining Your PC, Chapter 16 Networking Types, Devices, and Cabling Objectives Learn about network types and topologies Learn about the hardware used to build local networks Learn
More informationData Link Layer (1) Networked Systems 3 Lecture 6
Data Link Layer (1) Networked Systems 3 Lecture 6 Purpose of Data Link Layer Arbitrate access to the physical layer Structure and frame the raw bits Provide flow control Detect and correct bit errors Perform
More information