Read Chapter 11 and Lesson 11.  Then complete this homework.  Work to understand all problems even though all problems may not be assigned

1. Define the following terms in your own words using complete sentences:

a. LAN
b. MAN
c. Hub
d. Router
e. Bridge
f. Switch

2. a. Sketch a PPP frame and fill in the fields with bits.  The information field contains a link layer control message containing two octets which are all ones.  The FCS is 01011001 10100111.  Make your sketch in a vertical format that is 32 bits wide.

b. On your diagram above, place a caret mark, ^, to show where you would insert a zero when bit stuffing the above data stream.

3. What protocol is PPP based on and why has PPP become more popular than SLIP for connecting to Internet service providers when using dialup modems?

4. Fill in the following table:

Decimal	Binary	Hexadecimal
298
		E03F
	1001001010010010
3409
	00010111011001110
		FD9C

5. Describe a bus topology in complete sentences.  Explain the parts of the physical network and how data flows.

6. Describe a ring topology in complete sentences.  Explain the parts of the physical network and how data flows.

7. Describe a star topology in complete sentences.  Explain the parts of the physical network and how data flows.

8. What limitations do Ring, Star and Bus topologies have?

9. You implement a photo ticketing system to take digital pictures of vehicles when they run red lights.  You install one camera at 13th and Main Street in Hays.  When a vehicle passes through a red light a sensor triggers the camera to take a picture.  The picture is 400 pixels high by 600 pixels wide.  The image is grayscale, with the shade of each pixel defined by 16 bits.

a. How many bits is a single picture?

b. If you receive 300 pictures a month, how much storage will you need to hold three years of these pictures (assuming no growth)?

c. You decide you want to convert from still to motion video.  You plan on taking 10 seconds of video at 30 pictures per second.  How many bits would a single video clip be?

d. If you receive 300 videos per month (no growth) what would your three year storage requirements be?

e. If you fined each violator $50, what would the potential revenue be per year?

10.  Explain the difference between:

a. The LLC and MAC layers.

b. A LAN, MAN, and WAN.

c. Contention and Round Robin media access.

11. Describe the differences between layer 2 and layer 3 switches?

12. What advantages does flow based layer 3 switching have over packet-by-packet layer three switching?

Used with permission of the Author; Copyright (C) Kevin A. Shaffer 1998 - 2022, all rights reserved.