Describe Issues for network layer

Describe Issues for network layer : 

1)Addressing : 

                           *Specify a specific destination

2) Data transfer :

                               *Data only travel in one direction

                               *In other data can go both nays

3) Error Control : 

                                *Here Physical communication circuits are not  perfect.

                                *many error detecting and error connecting codes are known but data ends of tree connection must agree on which one is used.

4) Flow Control : 

                               *Of every level is try how to trees a fast sender frame swamping a slow receiver with data.

                               *Some involves tinds of feedback from receiver to tree sender either directly or indirectly about tree receiver  current situation.

                             

                                *Other, tree sender agreed on transmission, this process is flow control

5) Multiplexing and Demultiplexing :

                                                                  *When it is expensive to set up a separate connection for each pair of communicating, process tree underlying layer may deside to use tree same connection for multiple and demultiple.

6) Routing : 

                          *When tree are multiple data between source and destination a route must be choose.

                           *Sometimes tree decission must be split over two or move layers.

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