Question 1:
CSMA is the contention access protocol with the partial co-ordination among different users. Illustrate why and how CSMA must provide better throughput performance than ALOHA systems. Plot the throughput curves and provide your comments.
Question 2:
Discuss about the public switched telephone network (PSTN).
Question 3:
Illustrate how a PBX might be employed to provide telephone connections throughout the building.
Question 4:
Illustrate the link layer characteristics of the CDPD.
Question 5:
Illustrate the advanced radio information system (ARDIS).