extends from countries to continents. WANs are used to connect
LANs.
WAN structure
WAN is connected to different networks through hubs nad routers.
A LAN is connected to a WAN via router but on the other side a hub
is present.
protocols includes
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The important protocols used in WAN are
1. ATM
2. Frame Relay
3. MPLS
4. SONET/SDH
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