Networking Test Friday Online

My test will be online friday. All the powerpoint slides posted is basically an overview of what is going to be on the test. Basically the test will have mostly subnetting, the configuration modes and commands, and know the 7 layers in and out very well. I need an A on this test…..I will also accept a B if it comes to that. The information in the powerpoints I post, many Networking experts and people who have there CCNA’s will know this information easily. Please if there is someone who is an expert in networking can get me an A!!!

I am going to post alot of powepoints not everything is going to be on this exam. anyone who has an overall knowledge of all this areas should do well.

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© 2007 Cisco Systems, Inc. All rights reserved. Cisco Public 1 Application Layer Functionality and Protocols Network Fundamentals – Chapter 3 Dr. C. BouSaba 2 © 2007 Cisco Systems, Inc. All rights reserved. Cisco Public OSI Reference Model ?The OSI reference model is a layered, abstract representation created as a guideline for network protocol design. – Divides the networking process into 7 logical layers. – Each layer has unique functionality & is assigned specific services & protocols. 3 © 2007 Cisco Systems, Inc. All rights reserved. Cisco Public info is passed starting at Application L down the hierarchy to Physical L Open Systems Interconnection OSI: The Application Layer 4 © 2007 Cisco Systems, Inc. All rights reserved. Cisco Public info is passed over the network to destination host, where the info proceeds back up the hierarchy, ending at Application L. OSI: The Application Layer 5 © 2007 Cisco Systems, Inc. All rights reserved. Cisco Public OSI & TCP/IP: The Application Layers The TCP/IP application layer protocols fit roughly into the framework of the top 3 layers of the OSI model: Application, Presentation & Session layers. 6 © 2007 Cisco Systems, Inc. All rights reserved. Cisco Public ?The Application layer, –Layer seven, is the top layer of both the OSI and TCP/IP models. –Provides the interface between applications we use to communicate and the underlying network over which our messages are transmitted. –Application layer protocols are used to exchange data between programs running on the source and destination hosts. OSI: The Application Layer – 7 7 © 2007 Cisco Systems, Inc. All rights reserved. Cisco Public ?The Presentation Layer has three primary functions: 1.Coding and conversion of Application layer data to ensure that data from the source device can be interpreted by the appropriate application on the destination device. 2.Compression of the data in a manner that can be decompressed by the destination device. 3.Encryption of the…

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