CCNA

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Version 4.0

Application Layer Functionality and Protocols

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2

Objectives

 Define the application layer as the source and

destination of data for communication across networks.

 Explain the role of protocols in supporting

communication between server and client processes.

 Describe the features, operation, and use of

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Applications –

The Interface Between Human and Data Networks

 Explain the role of applications, services and protocols in

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 Define the separate roles applications, services and protocols play

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 Explain that applications provide the means for generating and

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The Role of Protocols in Supporting Communication

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 Describe the role protocols play in networking and be able to

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 Compare and contrast client server networking with peer-to-peer

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Features, Operation, and Use of TCP/IP Application Layer Services

 Describe the features of the DNS protocol and how this protocol

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 Describe the features of the HTTP protocol and how this protocol

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 Describe the features of the POP and SMTP protocols, and how

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 Describe the features of the Telnet protocol and identify several of

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 Describe the features of the SMB protocol and the role it plays in

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 Describe the features of the Gnutella protocol and the role it plays

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