1. Consider 4 users sharing a network link. In each of the following, explain whether time- division multiplexing (TDM) or Statistical TDM (if either) would be more appropriate:

(a) The average rate of each of the four senders is the same, but traffic from each source is bursty.

(b) The four users are streaming an audio recording of a WAV file (WAV format stores an uncompressed audio bitstream).

(c) The four users are streaming variable bit rate (VBR) audio recordings. 9.