mmTASK 1 a) Explain the following types of data communication networks and their applications * Public switched telephone network (PSTN) * Local area networks (LANs) * Metropolitan area networks (MANs) * Wide area networks (WANs) * Packet switched data network (PSDN)‚ * Integrated services digital network (ISDN) Public switched telephone network (PSTN) Public Switched telephone network (PSTN) is the global collection of interconnects originally designed to
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DATA COMMUNICATION COEN 3193 Assignment No. 1 Brief History of Data Communication Submitted by: Camille A. Bonito BSCpE IV-2 Submitted to: Florinda H. Oquindo TIMELINE OF HISTORY OF DATA COMMUNICATION 1800 Telegraph defined from the Greek... TELE = Afar GRAPHOS = Write 1809 First telegraph in Bavaria. Samuel Soemmering. Used 35 wires with gold electrodes in water. Detection at distant end 2000 feet away was by the amount of gas caused by electrolysis. 1828 First telegraph in the USA
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Transmission Media • Transmission medium – Physical path between transmitter and receiver – May be guided (wired) or unguided (wireless) – Communication achieved by using em waves • Characteristics and quality of data transmission – Dependent on characteristics of medium and signal – Guided medium ∗ Medium is more important in setting transmission parameters – Unguided medium ∗ Bandwidth of the signal produced by transmitting antenna is important in setting transmission parameters ∗ Signal directionality
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Com EENG 33151 – DATA COMMUNICATION AND COMPUTER NETWORKS ASSIGNMENT 1 (CO1‚ CO2 : PO1‚PO3) Note: • Submission Date: On or before but not after 12-10-2012 • Refer “Data Communications and Networking” 4th edition‚ Behrouz A. Forouzan • No Plagiarism • Kindly use A4 sheets 1. For n devices in a network‚ what is the number of cable links required for a mesh‚ ring‚ bus‚ and star topology? 2. Assume five devices are arranged in a mesh topology
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DCN VIVA QUESTIONS 1. What do you mean by data communication? Ans: It is the exchange of data between two devices via some form of transmission medium such as wire cable. The communicating system must be part of a communication system made up of a combination of hardware and software. The effectiveness of a data communication system depends on three fundamental characteristics: delivery‚ accuracy and timeliness. 2. What is simplex? Ans: It is the mode of communication between two devices in which
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Lakshmi Mittal Institute of Management Kasturba Gandhi Marg New Delhi – 110001 2 year full time PGDM Programme Class of 2012 [pic] Course Title: DATA COMMUNICATION & NETWORKS Instructor: Pushpendra Sharma Term: Four [pic] Introduction: The course focuses on the term and practical orientation of Network Infrastructure and other software to enable students to apply the skills for Data Communication and knowledge to solve network problem in functional area of network management
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Reviewer DataCom: Chapter 1-5 Chapter 1: Intranet- Restricted group on a company and only allows internal employee access. Extranet- Type of network that allows outside vendors special access to limited info in a company. Protocols- Rules of communication. * An identified sender and receiver * An agreed-upon method of communicating * Common language and grammar * Confirmation or acknowledgement requirements Elements of a Network: * Rules or agreements: protocols or how
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MEPCO Page 2 Data communications (Datacom) is the engineering Datacom) discipline concerned with the communication between devices. A network is a set of devices (often referred to as nodes) nodes) connected by communication links. links. A computer network is any set of computers or devices connected to each other via some form of transmission medium with the ability to exchange data. Here information is presented in a form which is agreed upon by the parties creating and using the data. A computer
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Communication Channel Scenarios Response to certain scenarios‚ with which communication channel should be used Helen L Rivas University of Phoenix Abstract In the following pages you will find responses to certain scenarios and which communication channel is best. There are two (2) main forms of communication channels‚ oral communication and written communication (Robbins & Judge 2011). Within the two (2) forms of communication channels there are ten (10) different communication channels;
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to network security management. Network security management is equivalent to managing a computerised network against security threads‚ unauthorised access‚ misuse and modifications. In today’s interconnected society the protection of confidential data‚ business continuity‚ availability and integrity became of great importance to any organisation. This document aims to provide you with a better understanding of network security in terms of history‚ network security policies‚ prevention systems and
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