OCR AS Level F451: 3.1.5 Data transmission 3.1.5 Data transmission a. Describe the characteristics of a LAN (local area network) and a WAN (wide area network);

Slides:

Advertisements

Similar presentations

Chapter 3: Introduction to Data Communications and Networking

Advertisements

Physical Structures Before discussing networks, we need to define some network attributes. Type of Connection 1- Point-to-Point 2- point-to-Multi point.

1 Lecture 30 Introduction to Data Communications Overview  Lecture Objectives.  Data Communications: Basics.  Major Issues in Data Communications. 

The Computer Network.

Chapter 5 Communications and Networks

Hardware & Software Needed For LAN and WAN

INTRODUCTION TO COMPUTER NETWORKS INTRODUCTION Lecture # 1 (

Introduction to Networking. Key Terms packet  envelope of data sent between computers server  provides services to the network client  requests actions.

Networks Am I hooked up?. What is a network? A network is a group of 2 or more computers that are linked together either by wires or by a wireless means.

© Paradigm Publishing Inc. 6-1 Chapter 6 Telecommunications and Networks.

It is a device that is able to work on its own without the help of another device or the help of the internet. An example of a standalone device would.

Lesson 8 DATA EXCHANGE. Transmission Modes Type 1 - Simplex  Simplex transmission: sends data in one direction only. A radio broadcast is a good example.

Data Communication & Computer Networks

A network is a collection of computers connected by communication channels that allows you to share information. mputer_network.

What Is A Network A network is a group of computers interconnected with communication lines which allows users to share information and resources.

AS Computing F451 F451 Data Transmission. What data is transmitted? Phone SMS Radio TV Internet.

Chapter 4 Computer Networks – Part 1

TOPIC Data Communication 3 March 2004 © PETER KOMISARCZUK & VUW,

6.1. Communication Methods Revision using Qwizdom.

CHAPTER 2 COMMUNICATION, NETWORKS, AND THE WWW. WHAT IS COMMUNICATIONS? A process in which two or more computers or devices transfer data, instructions,

Chapter 7 Networking: Computer Connections. Networks n Network - a computer system that uses communications equipment to connect two or more computers.

Module 2: Information Technology Infrastructure

Computer Networks. Why Create Networks? Communication Communication technologies such as , sms, video-conference can be used Makes communication.

Course Title: IT IN BUSINESS Course Instructor: ADEEL ANJUM Chapter No: 05 1 BY ADEEL ANJUM (MCS, CCNA,WEB DEVELOPER)

1 6 Further System Fundamentals (HL) 6.5 Computer – Peripheral Communication.

Week 12 (2012) Dr. Ghada Drahem. INTENDED LEARNING OUTCOMES This lecture covers: Networking concepts and terminology Common networking and communications.

Lecturer: Tamanna Haque Nipa

Networking Devices Hang Pham Jared Jelacich David Ramirez.

Thaksalawa Web Site Group Project Transmission of data from one place to another place is called Data Communication.

NETWORKING BASICS.

Introduction to Data Communication

3.3 Data Networks. Overview Identify the main differences between LAN and WAN. Identify the advantages of using a network over stand-alone computers.

Networks. What is a computer network? A network is two or more computers that are linked together so that they are able to share resources.

AS Computing Data transmission. Basic data transmission Baud The rate that the voltage changes is called the Baud. If the voltage changes 10 times every.

Data Transmission and Networks Modes of Data Transmission.

Activity 1 5 minutes to discuss and feedback on the following:

COMMUNICATION MODES. SIMPLEX Simplex communication is a mode in which data only flows in one direction. Simplex communication is a mode in which data.

Using Information Technology Telecommunications. 2 The term telecommunication means communication at a distance. The word data refers to information presented.

Chapter 1 Introduction Copyright © The McGraw-Hill Companies, Inc. Permission required for reproduction or display. 1.#

The Online World DATA EXCHANGE 2. Introduction Devices on a network use a variety of methods to communicate with each other and to transmit data. This.

Networks The Big Picture. Three Great Leaps of Civilization.

Your Interactive Guide to the Digital World Discovering Computers 2012 Chapter 9 Networks and Communications.

CHAPTER 8 Communication and Network Copyright © Cengage Learning. All rights reserved.

NETWORKS. Example Web Browsing application Software Protocols involved Software NIC / Modem Hardware Telephone line / Co-axial cable / Air interface.

ICT Unit 4: Network and the effects of using them

Unit Communication Hardware

PORTS Socket for external devices to connect to the system unit.

Intro to MIS – MGS351 Network Basics

Computer Networks Part 1

Internet & Communications Technology

Data Transmission and Networks

Computer Networks and Internet

Computer Networks and Internet

Wired Networks CIT 1100 Chapter4.

Computer Technology Notes #4

Telecommunication ELEC503

Network Basics Extended Learning Module E

Intro To Computer Networks

Data Communication and Networks

Data Communication and Networks

Networks Your Name Roll No To be continued.... 1/12/2019 Your Name.

POWERPOINT PRESENTATION

Chapter 1 Introduction Copyright © The McGraw-Hill Companies, Inc. Permission required for reproduction or display. 1.#

Data Communication and Networks

Data Communication and Networks

Data Communication and Networks

Practical Network Computer Science IT&CS Third Class part Mohanad Ali

Data Communication & Computer Network

Basics of Computer Networking

Presentation transcript:

OCR AS Level F451: Data transmission Data transmission a. Describe the characteristics of a LAN (local area network) and a WAN (wide area network); b. Show an understanding of the hardware and software needed for a LAN and for accessing a WAN, eg the internet; c. Describe the different types of data transmission: serial and parallel; and simplex, half-duplex and duplex modes

a. Describe the characteristics of a LAN (local area network) and a WAN (wide area network); OCR AS Level F451: Data transmission

What is a network? A network is a collection of two or more computers connected together to share resources. OCR AS Level F451: Data transmission

Types of network Local Area Network (LAN) – Covers a small (local) geographical area for example a single building or a school. Your home network is a LAN. Wide Area Network (WAN) – Covers a large (wide) geographical area for example a country or a continent. The internet is a WAN. The distinction is between the geographical area NOT the number of machines. A network with 1000 clients in a single house is still a LAN because it covers a small geographical area. OCR AS Level F451: Data transmission

b. show an understanding of the hardware and software needed for a LAN and for accessing a WAN, e.g. the internet OCR AS Level F451: Data transmission

To build or access a network you need these things: ●At least two computers. ●A network card. ●Network cable. ●A switch or a hub to connect the cable to and exchange signals. ●On large networks with a significant amount of traffic a Network server is needed to manage data transmission. OCR AS Level F451: Data transmission Accessing a network

c. describe the different types of data transmission: serial and parallel; and simplex, half-duplex and duplex modes; OCR AS Level F451: Data transmission

Serial data transmission OCR AS Level F451: Data transmission In serial transmission bits are sent one at a time over a single wire. The speed of transmission depends on the medium being used but could be very high (in some cases faster than a slow parallel transmission).

Parallel data transmission OCR AS Level F451: Data transmission Parallel transmission is used inside computer systems and for very short distances (a few meters). A parallel port could send 8, 16 or 32 bits simultaneously down separate lines. Before USB parallel ports were often used to connect to printers.

Types of transmission Simplex data transmission– Is used for transmission of data in one direction (for example from a mouse to a computer Half duplex data transmission – Used to transmit data in both directions but not at the same time. Duplex data transmission – Is used for transmission of data in both directions simultaneously. OCR AS Level F451: Data transmission