Homework 12

General Comments

• Problem from the book are taken from the Chapter Review Problems sections.
• For full credit, provide context for each problem, show all calculations, and explain your work/answers.
• Numbers and/or algebra by themselves are not enough.
• You will lose a significant amount of credit if you do not show enough work/context for your answers.
• Homework assignments must be very neatly written or typeset (e.g. using Word or OpenOffice).

Details

Do the following exercises from pages 194-195 of your textbook (182-183 in full book) and the ones listed below.

PROBLEM	Points	Comments
13	4	Give specific numerical evidence for your answer.
14	6
16	4	This problem involves two conversions. Show both.
1 below	6
2 below	4
3 below	2

1. 1. What is the difference between a bridge and a repeater?
   2. What is the difference between a bridge and a switch?
   3. What is the difference between a switch and a router?
2. The backbone of the Internet has a lot of built in redundancy. That is, there are generally many ways to route information from one machine to another.
   1. Why is this a good thing?
   2. Give one problem that arises because of this.
3. In the CSMA/CD protocol, if a machine detects a collision, it waits a random amount of time before trying to transmit again. Explain why it does this rather than immediately trying again or using a fixed wait time.