1-Define the characteristics of LAN,WAN ?


2-The physical topology of an Ethernet network does correspond to its logical architecture? Justify your answer.


3-A frame is leaving from a host on an Ethernet network with a wrong MAC address. What happens with this frame?


4- Establish a comparison table between the three topologies: Token Ring, Star and Bus.


5-

a) What does mean a collision?

b) Give two reasons leading to a collision.

c) Explain howcan we avoidacollision?


6-

Describe the function of a router. What is the difference between static routing and dynamic routing?

thanks in advance
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