(a) Sketch and explain the Ethernet LAN layouts (10Base2/10Base5/10Base5/any other) of your study centre.
(b) Also show the placement of repeaters, bridges and routers in the LAN setup.
(c) Answer the following questions:
(i) What are some advantages of repeaters over bridges?
(ii) What are the advantages of switches over bridges?
(iii) What are advantages and disadvantages of routers compared
to bridges?
Question 2:
(a) Explain in your own words with help of diagrams what are
hidden station and exposed station problems?
(b) Describe the operation of the MACAW protocol with the help
of a diagram.
(c) Answer the following questions:
(i) What are the similarities and differences between IP and
UDP protocols?
(ii) What are the advantages of UDP over TCP?
(iii) What are the advantages of TCP over UDP?
Question 3:
Implement the Dijkstra’s shortest path routing algorithm
and submit the code listing with proper documentation.
Question 4:
(a) Sketch the wave form for the bit stream 100010001111 using
the following encoding techniques:
Manchester encoding
Differential Manchester Encoding
Bipolar Encoding
NRZ encoding
b) What is congestion? How does leaky bucket algorithm control congestion? What are its drawbacks and how does token bucket algorithm overcome them?
Question 5:
Describe the DES algorithm in your own words .What are its variants?