Suppose there are 4 nodes sharing a broadcast channel using token passing protocol. Suppose at time t=0: 

Node 1 has 8 frames to transmit, 

 Node 2 has 6 frames to transmit, 

 Node 3 has 4 frames to transmit,  

Node 4 has 3 frames to transmit.  

Maximum number of frames which can be transmitted by a node in a turn = 4 

The time required to transmit one frame = 1 Second 

1. Explain how token passing protocol  works to complete this task 

2. Write down advantages and disadvantages of using channel partitioning, random access and taking turn approaches of multiple access.