Network layer has responsibility of transferring datagram from one node to physically adjacent node over a link.

Broadcast channels: connect multiple hosts in access networks.

PPP is

with half duplex, nodes at both ends of link can transmit, at same time.

the sending controller performs error detection based on error checking bits that were added by the sending controller.

In ppp we have

broadcast link can have multiple sending and receiving nodes all connected to the same, single, shared broadcast channel.

If more than two nodes transmjt frames at the same time, all nodes receive multiple frames at the same time; that causes a----------------

broadcast ;. channel is wasted during the collision interval

Channel partitioning protocols divide the channel into smaller "pieces" and allocate them to nodes for exclusive use. Which of the following is not a channel partitioning technique?

…. algorithm that determines how nodes share channel

Random access protocols do not divide the channel and allow collisions to occur. Which of the following is a random access protocol?

Taking-turns protocols involve nodes taking turns, with nodes that have more to send taking longer turns. Which of the following is an example of a taking-turns protocol?

communication about channel sharing must use channel itself! • no out-of-band channel for
coordination

In channel partitioning protocols, which of the following "pieces" is used to allocate the channel to nodes for exclusive use?

allocate piece to node for exclusive use

Which protocol allows collisions to occur and "recovers" from them?

The protocol is decentralized that mean

FDMA

TDMA