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Monitronic SuccessCollegeNAME:SUBJECT: DCN 2070 -02 Data communication and networksCOURSE NAME: Diploma in Information Technology, level 6.DUE DATE:
QUATION 1a)Differences between Telecommunication and Data CommunicationData Communicationrefers to the transmission of this digital data between two or more computers and a computer network or data network is a telecommunications network that allows computers to exchange data. Data communication is said to be local if communicating devices are in the same building or a similarly restricted geographical area. Data communication is divided into components namely as: MessageSender Receiver MediumProtocolTelecommunicationIs the exchange of information over significant distances by electronic means and refers to all type of voice, data and video transmission. There are few types of telecommunication networks: the internet is the largest example of telecommunications network example includes: Corporate and academic wide area networksTelephone networksCellular networksPolice and fire communication systemTaxi dispatch networkBroadcast networkb) Data communication componentsA communication system has following components:1. MessageIt is the information or data to be communicated and it can consist of text, numbers, pictures sound or video or any combination of this scenario.2. SenderIt is the device/ computer that generates and sends that message to be transmitted
3. ReceiverIt is the device or computer that receives the message. The location of receiver computer is generally different from the sender computer. The distance between the sender and the receiver depends upon to the type of network used in between.4. MediumIs the channel or the physical path through which the message is carried from sender to the receiver. The medium can be wired like twisted pair wire, coaxial cable, fiber optics cable and many more5. ProtocolsIt is the set of rules that govern the communication between the devices. Both the sender and the receiver use the same protocol to communicate with each other.Question 2Comparison between ISO/OSI and TCP/IPOSI(Open System Interconnection)TCP/IP(Transmission Control Protocol / Internet Protocol)1. OSI is a generic, protocol independent standard, acting as a communication gateway between the network and end user.1. TCP/IP model is based on standard protocols around which the Internet has developed. It is a communication protocol, which allows connection of hosts over a network.2. Transport Layer is Connection Oriented.2. Transport Layer is both Connection Oriented and Connection less.3. OSI is a reference model around which the networks are built. Generally it is used as a guidance tool.

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Term
Spring
Professor
NoProfessor
Tags
Computer network, Twisted pair, Network topology, Wide Area Networks

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