What defines how packets are placed on the 'media'. Physical addressing is also defined here as well as logical topologies.

What is logical topology

What is responsible for identifying Network Layer protocols and encapsulating them.

The time measured from when a frame enters a port to when it exits a port

Tells the Data Link Layer what to do with a packet once a frame is received

What can break up a collision domain

What is employed to efficiently break up a broadcast domain

What provide connections to a wide area network -WAN