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7. List the key internetworking functions of the OSI Network layer and how they are performed in a router.

1. Addresses that never change when packets are sent between two different networks
   A. Destination logical address.
   B. Destination MAC address.
   C. Source network address.
   D. Source physical address.

2. At a LAN, a router forward frames that come from a WAN with which source and destination physical addresses?
   A. Host interface on destination logical side.
   B. Host interface on source network side.
   C. Router interface on destination logical side.
   D. Router interface on source network side.

±1 question cover this objective!

Find the answers below!

1-AC; 2-AC.