J. Blustein
Some Answers
Here are sketches of the answers we discussed in class.
- Problem #2
-
The application described is most suitable for a circuit-switched
network. It requires long sessions with predictable regular
bandwidth. Since the bandwidth is known in advnace and is not
bursty, time can be reserved for it. Because it will run for a long
time we are not concerned about the setup cost.
-
We discussed this in detail during the class.
- Problem #3
- Problem #5
- 5(a) and 5(b)
- See Figure 1-11
- Example of 5(a)
- (a) ts+(Q+M−1)×(L+h)/R
- (b) (Q+M−1)×(L+2×h)/R
- 5(c)
- 5(d)
- There are not store and forward delays so it is just
ts + (h +
M×L)/R
- Question #9
- generation time
- 6 × 10−3 seconds
- transmission time
- 0.384 × 10−3 seconds
- propogation time
- 2 × 10−3
- total time
- 8.384 × 10−3 seconds
- CS 3171 Prof.:
- J. Blustein
<jamie@cs.dal.ca>