BCS 262indiv1mod3 - Transport and network layers are...

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Transport and network layers are integral parts of a network and each provides different functions for that network. These layers will pass data up and down to the next subsequent layer as the data is processed through the network. The articles provided all show different aspects of these layers and how they function within the network design. The first article, “Exploring the Transport Layer”, explains the function of the Transport Layer itself. The transport layer is layer number four of the OSI Model (The Open Systems Connection Model). This layer contains the Transmission Control Protocol (TCP) as well as the User Datagram Protocol (UDP). The TCP protocol is much more complex than the UDP protocol and, in doing so, provides a much more secure guarantee of arrival for the data being transferred to the device destination. The TCP protocol also uses a “three-way handshake” in that it will send a message to a remote server to request it be synched, the server will then respond to the request and the client will respond back that it’s ready for transmitting the data. The article also explains the ports and sockets that are commonly used through the TCP/IP protocols. This article gives an in-depth view at how the TCP/IP and UDP work and the functions and differences between them. The second article “Layer 3 Switching - Introducing the Router” explains the difference between a switch and a router. A switch is a Layer 2 device that uses frames to communicate, whereas a router is a layer 3 device and communicates with packets (packets are enclosed inside
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This note was uploaded on 07/12/2011 for the course BUS 101 taught by Professor Noname during the Spring '11 term at Albany State University.

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BCS 262indiv1mod3 - Transport and network layers are...

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