Consider the token ring network in Figure below. Token is circulating between st
ID: 3843884 • Letter: C
Question
Consider the token ring network in Figure below. Token is circulating between stations in the following sequence: A- B- C- D E- F A. Single token operation is implemented and 8 priority levels supported, with level 0 the highest priority while level 7 is the lowest. The following data frames will be delivered by this network: Frame 1 from Node B, at priority level 4; Frame 2 from Node C at priority level 2, Frame 3 from Node D at priority level 1, Frame 4 from node F, at priority level 4. At the beginning, a free token with priority level 3 and reservation level 7 is released by node A. What is the sequence these four frames will be delivered? Justify your answer.Explanation / Answer
Answer:1
According to question we have:
i) Token circulate between stations: (A->B->C->D->E->F->A)
ii) 8 level supported with 0 as lowest and 7 as highest
iii) Data frames delivered from network are:
a) Frame 1 from Node B with priority 4
b) Frame 2 from Node C with priority 2
c) Frame 3 from Node D with priority 1
d) Frame 4 from Node F with priority 4
e) In the begining we are sending free token with priority level 3 and reservation level 7 from node A
The sequence in which the frames are delivered is:
i) Frame 4 (because it sent from Node F and have priority 4)
ii) Frame 1 (because its sent from Node B and have high priority 4)
iii) Frame 3 (because its sent from Node C and have priority of mid range 2)
iv) Frame 3 (beacuse it having the list priority)