computer networks 1 m ng m y t nh 1
play

Computer Networks 1 (M ng My Tnh 1) Lectured by: Nguy n c Thi - PowerPoint PPT Presentation

Oct 07, 2022 •225 likes •562 views

Computer Networks 1 (M ng My Tnh 1) Lectured by: Nguy n c Thi Lecture 2: Communication Media Reference : Chapter 2 - Computer Networks , Andrew S. Tanenbaum, 4th Edition, Prentice Hall, 2003. Content Theoretical

  1. Computer Networks 1 (M ạ ng Máy Tính 1) Lectured by: Nguy ễ n Đứ c Thái

  2. Lecture 2: Communication Media Reference : Chapter 2 - “ Computer Networks ”, Andrew S. Tanenbaum, 4th Edition, Prentice Hall, 2003.

  3. Content � Theoretical basis for data communication � Guided transmission media � Wireless transmission � Digital subscriber lines � Internet over TV cables 3

  4. The Theoretical Basis for Data Communication Fourier Analysis • Bandwidth • Bandwidth-Limited Signals • Maximum Data Rate of a Channel • 4

  5. Fourier Series 5

  6. Bandwidth Signals lose power during transmission � Different transmission facilities diminish different � Fourier components with different amounts -> distortion of signals Usually, high frequency components will be � diminished Bandwidth : range of frequencies can be � transmitted without being strongly attenuated 6

  7. Bandwidth-Limited Signals (1) A binary signal and its root-mean-square Fourier amplitudes. (b) – (c) Successive approximations to the original signal. 7

  8. Bandwidth-Limited Signals (2) (d) – (e) Successive approximations to the original signal. 8

  9. Bandwidth-Limited Signals (3) Relation between data rate and harmonics for a voice telephone line 9

  10. Guided Transmission Data Twisted Pair • Coaxial Cable • Fiber Optics • 10

  11. Twisted Pair (a) Category 3 UTP. (b) Category 5 UTP. 11

  12. Coaxial Cable A coaxial cable. 12

  13. Fiber Optics (a) Three examples of a light ray from inside a silica fiber impinging on the air/silica boundary at different angles. (b) Light trapped by total internal reflection. 13

  14. Transmission of Light through Fiber Attenuation of light through fiber in the infrared region. 14

  15. Fiber Cables (a) Side view of a single fiber. (b) End view of a sheath with three fibers. 15

  16. Fiber Optic Networks A fiber optic ring with active repeaters. 16

  17. Fiber Optic Networks (2) A passive star connection in a fiber optics network. 17

  18. Wireless Transmission The Electromagnetic Spectrum • Radio Transmission • Microwave Transmission • Infrared and Millimeter Waves • Lightwave Transmission • 18

  19. The Electromagnetic Spectrum The electromagnetic spectrum and its uses for communication. 19

  20. Radio Transmission (a) In the VLF, LF, and MF bands, radio waves follow the curvature of the earth. (b) In the HF band, they bounce off the ionosphere. 20

  21. Lightwave Transmission A bidirectional system with two lasers is pictured here. 21

  22. Communication Satellites Geostationary Satellites • Medium-Earth Orbit Satellites • Low-Earth Orbit Satellites • Satellites versus Fiber • 22

  23. Communication Satellites Communication satellites and some of their properties, including altitude above the earth, round-trip delay time and number of satellites needed for global coverage. 23

  24. Communication Satellites (2) The principal satellite bands. 24

  25. Modems, ADSL, and Wireless 25

  26. Modems (c) Frequency modulation (a) A binary signal (d) Phase modulation (b) Amplitude modulation 26

  27. Digital Subscriber Lines - ADSL Bandwidth versus distanced over category 3 UTP for DSL. 27

  28. Digital Subscriber Lines – ADSL (2) Operation of ADSL using discrete multitone modulation. 28

  29. Digital Subscriber Lines (3) A typical ADSL equipment configuration. 29

  30. Internet over Cable Cable television 30

  31. Internet over Cable (2) The fixed telephone system. 31

  32. Spectrum Allocation Frequency allocation in a typical cable TV system used for Internet access 32

Download Presentation
Download Policy: The content available on the website is offered to you 'AS IS' for your personal information and use only. It cannot be commercialized, licensed, or distributed on other websites without prior consent from the author. To download a presentation, simply click this link. If you encounter any difficulties during the download process, it's possible that the publisher has removed the file from their server.

Recommend

Computer Networks I Computer Networks I Networks A networks connection structure is known as

Computer Networks I Computer Networks I Networks A networks connection structure is known as

Computer Networks I Computer Networks I Networks A networks connection structure is known as its network topology . Host nodes source and destination of messages Communication nodes where messages pass through; can be

304 views • 26 slides
Topics ! Use of networks ! Network structure ! Implementation of networks Computer Networks

Topics ! Use of networks ! Network structure ! Implementation of networks Computer Networks

Topics ! Use of networks ! Network structure ! Implementation of networks Computer Networks Introduction Lets Get Started! Computer Networks: Our Definition ! Networking today: Where are they? An interconnected collection of

439 views • 8 slides
Computer Networks Chapter 1 - Fundamentals CEN 5501C - Computer Networks - Spring 2007 - UF/CISE

Computer Networks Chapter 1 - Fundamentals CEN 5501C - Computer Networks - Spring 2007 - UF/CISE

Computer Networks Chapter 1 - Fundamentals CEN 5501C - Computer Networks - Spring 2007 - UF/CISE - Newman 1 Computer Networks Need to share Information Resources Communication vs. Storage Transmission across: Space

1.13k views • 48 slides
Types of networks (social networks, computer networks, entity- relationship networks, )

Types of networks (social networks, computer networks, entity- relationship networks, )

Networks Types of networks (social networks, computer networks, entity- relationship networks, ) Node-link diagrams Layered Internet architecture (encapsulation) The Internet Structure of the Internet core

556 views • 16 slides
Networking Friday Four Square! Outside Gates, 4:15PM Computer Networks Computer networks

Networking Friday Four Square! Outside Gates, 4:15PM Computer Networks Computer networks

Networking Friday Four Square! Outside Gates, 4:15PM Computer Networks Computer networks allow us to get amazing things done. Sharing knowledge (Wikipedia, Khan Academy, etc.) Solving huge problems (folding@home, SETI, etc.)

714 views • 42 slides
Computer Networks and the Internet CMPS 4750/6750: Computer Networks Outline What Is the

Computer Networks and the Internet CMPS 4750/6750: Computer Networks Outline What Is the

Computer Networks and the Internet CMPS 4750/6750: Computer Networks Outline What Is the Internet? Access Networks Packet Switching and Circuit Switching A closer look at delay, loss, and throughput Interconnection of ISPs

844 views • 52 slides
Application Layer CS 3516 Computer Networks CS 3516 Computer Networks 2: Application Layer 2

Application Layer CS 3516 Computer Networks CS 3516 Computer Networks 2: Application Layer 2

Application Layer CS 3516 Computer Networks CS 3516 Computer Networks 2: Application Layer 2 Chapter 2: Application Layer Some network apps learn about protocols Goals: conceptual, e-mail social networks by examining

371 views • 14 slides
CS 4453 Computer Networks Chapter 1 Introduction 2015 Winter 1.1 An overview Computer

CS 4453 Computer Networks Chapter 1 Introduction 2015 Winter 1.1 An overview Computer

CS 4453 Computer Networks Chapter 1 Introduction 2015 Winter 1.1 An overview Computer networks now are almost everywhere. Most software developers need some knowledge of computer networks. Internet is complicated, that is a network

701 views • 8 slides
Computer Networks PHY CEN 5501C - Computer Networks - Spring 2007 - UF/CISE - Newman 1 Physical

Computer Networks PHY CEN 5501C - Computer Networks - Spring 2007 - UF/CISE - Newman 1 Physical

Computer Networks PHY CEN 5501C - Computer Networks - Spring 2007 - UF/CISE - Newman 1 Physical Layer Mechanical Medium Connectors Electrical/optical Band Modulation Procedural Timing, etc. CEN 5501C -

221 views • 11 slides
Computer Networks 1 (M ng My Tnh 1) Lectured by: Nguy n c Thi Lecture 3:

Computer Networks 1 (M ng My Tnh 1) Lectured by: Nguy n c Thi Lecture 3:

Computer Networks 1 (M ng My Tnh 1) Lectured by: Nguy n c Thi Lecture 3: Networking Technologies Reference : Chapter 4 - Computer Networks , Andrew S. Tanenbaum, 4th Edition, Prentice Hall, 2003. Content Channel

765 views • 37 slides
Computer Networks 1 (Mng My Tnh 1) Lectured by: Nguyn c Thi 1 Lecture 5:

Computer Networks 1 (Mng My Tnh 1) Lectured by: Nguyn c Thi 1 Lecture 5:

Computer Networks 1 (Mng My Tnh 1) Lectured by: Nguyn c Thi 1 Lecture 5: Network Layer (cont) Reference : Chapter 5 - Computer Networks , Andrew S. Tanenbaum, 4th Edition, Prentice Hall, 2003. 2 Contents The

459 views • 43 slides
Introduction to computer networks What is a computer network? What are the benefits of

Introduction to computer networks What is a computer network? What are the benefits of

Introduction to computer networks What is a computer network? What are the benefits of using networks? What does LAN stand for? Where are LANs usually located? What is the difference between a wired LAN and a wireless LAN?

280 views • 6 slides
Packet Switching Guevara Noubir Fundamentals of Computer Networks

Packet Switching Guevara Noubir Fundamentals of Computer Networks

Packet Switching Guevara Noubir Fundamentals of Computer Networks Textbook: Computer Networks: A Systems Approach, L. Peterson, B. Davie, Morgan Kaufmann Chapter 3. Fundamentals of Computer Networks Packet

718 views • 45 slides
Introduction 2 A Modern Computer iPad Air 2 Computer Systems and Networks Spring 2017

Introduction 2 A Modern Computer iPad Air 2 Computer Systems and Networks Spring 2017

Computer Systems and Networks ECPE 170 Jeff Shafer University of the Pacific Introduction 2 A Modern Computer iPad Air 2 Computer Systems and Networks Spring 2017 3 Applications Computer Systems and Networks Spring

732 views • 52 slides
Computer Networks Chapter 2 Data Link Layer Issues CEN 5501C - Computer Networks - Spring

Computer Networks Chapter 2 Data Link Layer Issues CEN 5501C - Computer Networks - Spring

Computer Networks Chapter 2 Data Link Layer Issues CEN 5501C - Computer Networks - Spring 2007 - UF/CISE - Newman 1 LAN Properties Shared medium High data rate Low delay Low error rate Native broadcast support

657 views • 27 slides
Lecture 11 : Computer Networks and Internet 1 This Lecture Covers: Types of Computer

Lecture 11 : Computer Networks and Internet 1 This Lecture Covers: Types of Computer

UEC 01 : Computer Skills & Programming Concepts I Lecture 11 : Computer Networks and Internet 1 This Lecture Covers: Types of Computer Networks. Communication devices and media. Network Topology. LAN Components Network

435 views • 32 slides
AGENDA Multi-access Edge Computing(MEC) use cases K8s/Openshift as candidate for Edge PaaS

AGENDA Multi-access Edge Computing(MEC) use cases K8s/Openshift as candidate for Edge PaaS

K8s(Kubernetes) and SDN for Multi-access Edge Computing deployment Open Source Summit | 2017.06.02 | Red Hat Hyde SUGIYAMA Senior Principal Technologist NFV | SDN | ICT Red Hat APAC Office of Technology AGENDA Multi-access Edge

762 views • 28 slides
Good Evening! INT1005 Introduction to Computer Systems February 2017 Ulrich Werner

Good Evening! INT1005 Introduction to Computer Systems February 2017 Ulrich Werner

Good Evening! INT1005 Introduction to Computer Systems February 2017 Ulrich Werner Discovering Computers Technology in a World of Computers, Mobile Devices, and the Internet Chapter 1 Digital Literacy A World of Technology Because

612 views • 39 slides
Media Types of Media Media propagate signals that carry bits Well look at some common

Media Types of Media Media propagate signals that carry bits Well look at some common

Media Types of Media Media propagate signals that carry bits Well look at some common types: Wires Fiber (fiber optic cables) Wireless CSE 461 University of Washington 20 Wires Twisted Pair Very common; used in

1.78k views • 23 slides
Bring out yer SIPs: An Introduction to Digital Preservation with Archivematica iSkills Workshop

Bring out yer SIPs: An Introduction to Digital Preservation with Archivematica iSkills Workshop

Bring out yer SIPs: An Introduction to Digital Preservation with Archivematica iSkills Workshop February 9, 2018 Grant Hurley, Digital Preservation Librarian, Scholars Portal Agenda - Basic concepts in digital preservation - Introduction

939 views • 28 slides
ECPE / COMP 177 Fall 2013 Some slides from Kurose and

ECPE / COMP 177 Fall 2013 Some slides from Kurose and

ECPE / COMP 177 Fall 2013 Some slides from Kurose and Ross, Computer Networking , 5 th Edition Instructor: Dr. Jeff Shafer Email: jshafer at

1.04k views • 58 slides
Data Communications and Networking Summer 2011 Course Information CMPT371 CMPT371 Classes :

Data Communications and Networking Summer 2011 Course Information CMPT371 CMPT371 Classes :

CMPT 371 Data Communications and Networking Summer 2011 Course Information CMPT371 CMPT371 Classes : Wed, 17:30-20:20, HC 1700 Instructor Instructor Marjan Marzban Email : mmarzban@cs.sfu.ca Office hours : Wed, 16:00-17:00 at HC 2134 TA

1.01k views • 64 slides
Videos IoTSSC - Lecture 3 Hardware Platforms and Sensors Tom Spink Including material adapted

Videos IoTSSC - Lecture 3 Hardware Platforms and Sensors Tom Spink Including material adapted

IoTSSC - Lecture 3 Videos IoTSSC - Lecture 3 Hardware Platforms and Sensors Tom Spink Including material adapted from Bjoern Franke and Michael OBoyle IoTSSC - Lecture 3 Hardware Platform A hardware platform describes the physical

658 views • 31 slides
Compressive Sensing Take 2 Yubo Paul Yang, Algorithm Interest Group, Nov. 1 2019 See take 1

Compressive Sensing Take 2 Yubo Paul Yang, Algorithm Interest Group, Nov. 1 2019 See take 1

Compressive Sensing Take 2 Yubo Paul Yang, Algorithm Interest Group, Nov. 1 2019 See take 1 by Brian Busemeyer BB cat What is compressive (compressed) sensing? Compressive sensing is a signal processing technique to reconstruct sparse

351 views • 14 slides

More recommend