Networking Network Classification, by there: 3 The Rules they use to exchange data: Protocols.

Slides:

Advertisements

Similar presentations

INTRODUCTION TO COMPUTER NETWORKS CS-107 INTRODUCTION TO COMPUTING Aug-Dec,2010 Alak Roy Assistant Professor Dept. of CSE Royal Group of Institution .

Advertisements

Computer Networks and the Internet CMPT 109 Montclair State University.

© 2007 Cisco Systems, Inc. All rights reserved.Cisco Public 1 Version 4.0 Communicating over the Network Network Fundamentals – Chapter 2.

The Internet Useful Definitions and Concepts About the Internet.

Layer 7- Application Layer

Becoming a Networking Expert Networking Hardware and Protocols.

Introduction to Management Information Systems Chapter 5 Data Communications and Internet Technology HTM 304 Fall 07.

Internet Technologies Networking / Internet Protocols (TCP/IP) Server/Client Software Communication via Ports Web Page Technology Recipe of Web Page Development.

1 Networking A computer network is a collection of computing devices that are connected in various ways in order to communicate and share resources. The.

Term 2, 2011 Week 1. CONTENTS Network communications standards – Ethernet – TCP/IP Other network protocols – The standard – Wireless application.

©Brooks/Cole, 2003 Chapter 6 Computer Networks. ©Brooks/Cole, 2003 Understand the rationale for the existence of networks. Distinguish between the three.

The internet and the WWW

A global, public network of computer networks. The largest computer network in the world. Computer Network A collection of computing devices connected.

In The Name Of Allah Whose Blessings Are Uncountable.

Chapter 5 Networks Communicating and Sharing Resources

Human-Computer Interface Course 5. ISPs and Internet connection.

Networks and Telecommunications

Chapter 9A Network Basics.

Lesson 24. Protocols and the OSI Model. Objectives At the end of this Presentation, you will be able to:

Networking and the Internet © 2007 Pearson Addison-Wesley. All rights reserved.

Lesson 2 — The Internet and the World Wide Web

Copyright © 2006 by The McGraw-Hill Companies, Inc. All rights reserved. McGraw-Hill Technology Education Copyright © 2006 by The McGraw-Hill Companies,

Computer networks 2 A Informatica prof.sse ALLEMANI e CARUSO.

Networks QUME 185 Introduction to Computer Applications.

Web Page Design I Basic Computer Terms “How the Internet & the World Wide Web (www) Works”

Network Services Networking for Home & Small Business.

Introduction to Internet terms. Topics to Study What is Internet HTTP URL SMS MMS Wi-Fi Video Conferencing Social Webisites.

CIS 1310 – HTML & CSS 1 Introduction to the Internet.

Chapter 4 Networking and the Internet. © 2005 Pearson Addison-Wesley. All rights reserved 4-2 Chapter 4: Networking and the Internet 4.1 Network Fundamentals.

1 Network + Tom McLaughlin b-admin, mcse, mous, a+, net+ (mct, linux)

15-1 Networking Computer network A collection of computing devices that are connected in various ways in order to communicate and share resources.

Lecture 4 Title: Network Components and Types By: Mr Hashem Alaidaros MIS 101.

Protocols. Protocol Set of rules that govern: Connection Communication data transfer Protocols regulate: access method allowed physical topologies types.

The Internet The internet is simply a worldwide computer network that uses standardised communication protocols to transmit and exchange data.

Chap 15 Application Layer Andres, Wen-Yuan Liao Department of Computer Science and Engineering De Lin Institute of Technology

NETWORK HARDWARE AND SOFTWARE MR ROSS UNIT 3 IT APPLICATIONS.

Chapter 4 Networking and the Internet © 2007 Pearson Addison-Wesley. All rights reserved.

Chapter 6 Data Communications. Network Collection of computers Communicate with one another over transmission line Major types of network topologies What.

The Web and Web Services Jim Graham NR 621 Spring 2009.

What is a Network? Living Online Lesson 1 Mrs. Elzey.

Application Layer Honolulu Community College Cisco Academy Training Center Semester 1 Version

Networks: LANs, WANs and Communication Protocols How do computers communicate?

© 2007 Cisco Systems, Inc. All rights reserved.Cisco Public ITE PC v4.0 Chapter 1 1 Application Layer Functionality and Protocols Network Fundamentals.

1 Chapter Overview Network Communications The OSI Reference Model.

1 Chapter Overview Network Communications The OSI Reference Model.

INTRANETS MR ROSS UNIT 3 IT APPLICATIONS. DEFINITION An intranet is an internal, secured environment that has a similar look and feel to the Internet,

Understand the Components of a Network Mrs. Whaley.

Cisco – Chapter 15 Application Layer closest to you as an end-user, when you are interacting with software.

BASIC NETWORK PROTOCOLS AND THEIR FUNCTIONS Created by: Ghadeer H. Abosaeed June 23,2012.

© 2010 Pearson Education, Inc. | Publishing as Prentice Hall. Computer Literacy for IC 3 Unit 3: Living Online Chapter 1: Understanding the Internet.

INTERNET PROTOCOLS. Microsoft’s Internet Information Server Home Page Figure IT2031 UNIT-3.

Networks & Communications Diambil dari : Module Application Training Institut Teknologi Bandung

Networks. Local area network (LAN( Wide-area network (WAN( Networks Topology.

Computer Network Architecture Lecture 6: OSI Model Layers Examples 1 20/12/2012.

Lesson 7 Networks Unit 1—Computer Basics. Computer Concepts BASICS - 2 Objectives Describe the benefits and disadvantages of networks. List and describe.

The Internet What is the Internet? The Internet is a lot of computers over the whole world connected together so that they can share information. It.

The OSI Model. Understanding the OSI Model In early 1980s, manufacturers began to standardize networking so that networks from different manufacturers.

IST 201 Chapter 11 Lecture 2. Ports Used by TCP & UDP Keep track of different types of transmissions crossing the network simultaneously. Combination.

VCE IT Theory Slideshows

Chapter Objectives In this chapter, you will learn:

Instructor: Ahmed Jafer

Application Layer Honolulu Community College

Some bits on how it works

ICT Communications Lesson 1: Using the Internet and the World Wide Web

Professional Web Designing For Absolute Beginners

Web Development & Design Chapter 1, Sections 4, 5 & 6

Protocol Application TCP/IP Layer Model

Computer Networks Protocols

The Internet and Electronic mail

Presentation transcript:

Networking Network Classification, by there: 3 The Rules they use to exchange data: Protocols

Protocols Communication protocols are agreed sets of rules and procedures for computers to exchange information. Like humans agreeing to speak the same language during a conversation. For two computers to exchange data, they must be using the same protocols.

Protocols There is a protocol for each network communication task, such as: - how to send data over the Internet (TCP/IP) - how to send and receive (POP, IMAP) - how to request and deliver web pages (HTTP) -how to request and deliver files (FTP) -Other common protocols: Appletakl, IPX/SPX, Netbui, All LAN protocols

Protocols Sometimes there is more than one choice of protocol for a task, such as how messages pass across a network (IPX/SPX vs TCP/IP). As long as all the connected computers use the same protocol, it really does not matter which protocol is used. The internet only works because TCP/IP, POP, FTP and HTTP are universal standards.

Protocols - Ethernet Ethernet is a network standard allowing PCs to communicate in networks Ethernet is based on bus and star networks & is inexpensive and easy to install and maintain Ethernet uses cable to transmit data Ethernet transfer rates: originally 10 Mbps Fast ethernet, 100 Mbps using twisted pair (Cat 5) Gigabit ethernet 1000 Mbps

Protocols – Token Ring Token ring, a LAN technology Requires network devices share or pass a special signal called a token One token per network so only one computer can transmit data at a time Token ring is based on a ring topology

Protocols – TCP/IP The universal protocol for internet communications. The backbone of the internet. Is actually two complementary protocols… TCP (Transport Communication Protocol) and IP (Internet Protocol)

Internet Addressing Humans like working with names (e.g. but computers use numbers (e.g ). That is an IP address – four ‘octets’ separated by dots, each octet can be between 0 and 255. All internet communications use IP addresses, not URLs.

Addressing When you enter a URL your ISP looks up the URL in its DNS to see if it has the corresponding IP address. If it does have it, the server is located by IP address and the communication begins. If the IP address is not in your ISP’s DNS, the DNS asks another, bigger DNS. If that DNS does not have it, a “grand master” DNS server will be asked. If that fails, you get an error message saying the domain does not exist.

Addressing The domain name server database stores the names and IP addresses of every internet domain on the planet. The database is distributed across thousands of computers across the planet but it acts as a single, massive database – it’s the biggest distributed database in the world.

Addressing - URLs URL (Uniform Resource Locators) are made up of segments e.g. specifies the protocol for the request. www refers to the world wide web – made up of webservers, webpages and browsers. Wedderburn-college.vic.edu.au is the domain name.

Other network Protocols Apple File Protocol, (AFP) Microsoft NetBios Extended User Interface (NetBEUI) , wireless standards Wireless communications 50mtrs to 300 mtrs Hot spot, location where users can connect mobile computers to a wireless network WAP, wireless application protocol; allowing wireless mobile devices to access internet & its services Uses a client/server network; wireless device contains client software WAP enabled devices, devices that support WAP, eg. web-enabled phones, etc.