Q1. Write down the format of token ring and describe the meaning of each field in the frame.
Q2. What happens in the token bus if a station accepts the token and then crashes instantly? How IEEE 802.4 does handle it?
Q3. By using RSA public key cryptosystem with a = 1, b = 2, c = 3 and so on.
a) If p = 7 and q = 11, list the five legal values for d
b) If p = 13 and q = 31 and d = 7, then determine e
c) By using p = 5, q = 11 and d = 27, determine e and encrypt “abcdefghij”
Q4. Explain Dijkstra shortest path algorithm. Also illustrate the working process of Dijkstra algorithm with the help of an illustration.