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Cisco Chapter 3
Application Layer and such
6
Computer Networking
Undergraduate 2
11/07/2010
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Term
NAME 7 PURPOSES OF THE TRANSPORT LAYER
 Definition

1.Tracking the individual communications between applications on the source and destination hosts

2. Segmenting data and managing each piece

3. Reassembling the segments into streams of application data. 

4. Identifying the different applications.

5. Preforming flow control between end users.

6. Enabling error recovery.

7. Initiating a session.

*** The transport layer enables applications on devices to communicate with each other. *****
Term
PORT 20 APPLICATION AND PROTOCOL
 Definition

APPLICATION: FTP-FILE TRANSFER PROTOCOL (DATA) 

PROTOCOL: TCP
Term
PORT 21 APPLICATION AND PROTOCOL
 Definition

APPLICATION: FILE TRANSFER PROTOCOL (CONTROL)

PROTOCOL: TCP
Term

PORT 23 APPLICATION AND PROTOCOL

 

 Definition

APPLICATION: TELNET 

PROTOCOL: TCP
Term

PORT 25 APPLICATION AND PROTOCOL

 

 Definition

APPLICATION: SMTP(SIMPLE MAIL TRANSFER PROTOCOL)

PROTOCOL: TCP
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