CCNA1 v6.0 Chapter 9 Exam 2018

Chapter 9: Transport Layer

Data networks and the Internet support the human network by supplying reliable communication between people. On a single device, people can use multiple applications and services such as email, the web, and instant messaging to send messages or retrieve information. Data from each of these applications is packaged, transported and delivered to the appropriate application on the destination device.

The processes described in the OSI transport layer accept data from the application layer and prepare it for addressing at the network layer. A source computer communicates with a receiving computer to decide how to break up data into segments, how to make sure none of the segments get lost, and how to verify all the segments arrived. When thinking about the transport layer, think of a shipping department preparing a single order of multiple packages for delivery.

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CCNA1 v6.0 Chapter 9 Exam

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