another key design decision for ATM is the size of the data field for fixed-size cells.?

Question

Let us consider this decision from the point of efficiency and delay.
1.) Assume that an extended transmission takes place, so that all cells are completely filled. Derive an expression for the efficiency N as a function of H and L.
2.) Packetization delay is the delay introduced into a transmission stream by the need to buffer bits until an entire packet is filled before transmission. Derive an expression for this delay as a function of L and the date rate R of the source.

Answer 1

Wow. Where do you people come up with this stuff?