Define Peer$-$to$-$Peer Commun$$cation$?$

What is PDU? What are its two parts?

How does the protocol stack make the implementation of each layer independent of the other layers?

What is the advantage of having well$-$defined interface between each two layers in the protocol stack?

Which layer provides the following services?

Route determination

Connection to transmission media

Providing service to end user

Creating Packets

Node$-$to$-$Node Delivery of frames

A host is communicating with another host using TCP$/$IP protocol suite $($stack$).$ What is the name of the PDU sent or received at each of the following layers:

Application layer

Network layer

Data$-$link layer

In the TCP$/$IP model, what is the name of the PDU that carries layer $4$ header and application$-$layer message?

A router is connecting three IPv$4$ networks, how many physical, data link, and network layers involved?

How a device can recognize that it should receive a frame from the medium?

What Is the difference between node$-$to$-$node delivery and source$-$to$-$destination delivery?

The datalink layer at the source prepared a frame to a destination that is not connected to the same link, will the physical addresses of the received frame at the destination be the same as the ones in the source frame? Explain?

What type of delivery does transport layer provide?