Appendix C

Solutions to Selected Exercises

I have not failed. I've just found 10,000 ways that won't work.

Thomas A. Edison

The answer, my friend, is blowin' in the wind

The answer is blowin' in the wind.

Bob Dylan

Exercise 1.2: The IP prefix is: 10.20.0.0/14.

Exercise 1.7a: Time-to-live field and header checksum.

Exercise 2.5a: The shortest path is 1–4–3–5.

Exercise 2.5b: The shortest path is 1–2–4–3–5.

Exercise 2.6: The widest path is 2–4–6 with bandwidth 10.

Exercise 3.2: Count-to-infinity and looping.

Exercise 3.6a: It will take 10×4=40Image sec.

Exercise 4.2: We name the flow variables based on clockwise ...

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