In CSMA, a node defers transmission if the channel is

The main role of the Network Layer is to route packets from source to destination. T $/$ F

The application layer of a transmitter can exchange protocol messages with the network layer of a receiver. T$/$ F

$($EXTRA CREDIT$)(0\mathrm{.}8$pt$)$ Select T for TRUE or $F$ for FALSE in the statements below frame with an ACK packet. $\frac{T}{F}$ To allow the receiver to detect duplicate frames, the transmitter prepends In CSMA, a node defers transmission if the channel is sensed busy. T $/$ F The main role of the Network Layer is to route packets from source to des with the network layer of a receiver. $\frac{T}{F}$ The application layer of a transmitter can exchange protocol messages with the network layer