Homework

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BUS 300 - Mashaw, Homework # 11 Name: This HW looks a little bit long, but potentially, you can get up to 7 points from this HW, the points over 4 are extra credit. This HW is due on Wednesday Dec. 2nd. But, bring the first draft to the class on Monday November 30th, to review and refine. During Thanksgiving Read • Chapter 16 about Telecommunication, Networks and Internet • Ch 9 about Social Media, Twitter, Blogs, Wikis, See the following videos, make a short comment (a sentence is OK), so that I know you saw it (Search in YouTube to find)

 Introduction to Networking | Network Fundamentals Part 1

 Network Topologies (Star, Bus, Ring, Mesh, Ad hoc, Infrastructure, & Wireless Mesh Topology)

 How does your mobile phone work? | ICT #1

 Communication Channels (look for the one that covers Media, see the picture below.)

 What is modulation & Why it is so important?

 Physics - Waves - Analogue and Digital Signals

See the interesting Video about Internet, make a note of any terminology that you hear for example IP, Router, Port 80, etc. your list should have at list 15 terms, see the 12-13 minutes version not the short 6 minutes version:

• The Dawn of the Net - How the Net works • How does the INTERNET work? | ICT #2

Part I A. Define, or Explain briefly in your own words (this will be a useful summary for you for the filal.) 1a. Telecommunication b. Networking c. based on the definition: Can regular voice to be transmitted over the network?

a. b. c.

2 a. Channel: b. Half duplex c. Full duplex d. Multiplexing e. If 200 users need to do full duplex data transmission, a) how many "lines" are needed? b) How many channels are needed?

a. b. c. d. e a) b)

3. a. PAN b. LAN c. WAN d. Internet e. What are the main differences?

a. b. c. d. e.

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4. List the Media that can be used in Telecommunications?

1. 2. 3. 4.

5. What is a Protocol? Explain briefly, then list (the name of ) a. a protocol for PAN b. 4 Protocols for LAN;

A protocol is: a: b: 1. 2. 3. 4.

6. List traditional WAN lines, with their number of channels and speed.

1. 2. 3. 4. 5.

7. A 5 mega file is to be transmitted, the frame size is 1K , a) Draw a picture of a frame, and show the overhead data b. how many packets are created?(Show computations) c) How many bits are to be sent/received?

a: b: c:

B. Problem: Your customers complain about the slow website download time. The website has 5 pictures in jpeg (1 meg each), and a little video clip (5 meg, not streamed). How long does it take to download the webpage? Compute it for someone who has a Modem (assume 40k), Cable (assume 50 meg), DSL (assume 20 meg). Summarize the results in the following table. (Show your assumption, computations, and final answer for proper credit.) Device/Modem Webpage

size No of bits to transmit

Computation Time to download

Recommendation

A Dial up Modem (Assume a 40k)

Cable (Assume 50 meg)

DSL (Assume 20 meg)

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Part II. Hands on 1. Do you have a NIC in your computer? How many? What kind/brand is it? Is it working?

(Hint Control Panel -> System -> Device Manager, or Control Panel -> Proper device ) 2. a. What do you think is the speed of your internet connection? Answer (spell out the measure): b. Measure the speed of your internet connection (Try http://www.speakeasy.net/speedtest/ , or http://www.testmyspeed.com/ , or http://www.vonage.com/ , or http://speedtest.vonage.com/; WhatisMyIP.com, or Speakeasy.com and Speedtest.net ). Use at least 3 sites/time, and compare the results. Why different? Site used Time of the day Download speed Upload speed Location of the server?

Part III. Applications Network Design: Show the design of your Home LAN The physical Topology:

? The physical Topology (Your schematic)

Media used: Devices used

1. 2. 3. 4.

What is your MAC address? What is your IP address?

The protocols used

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Questions for test3, you may need to explain or fill in the blank with words

• Telecommunication is about sending receiving . . . . . . . . . . . . (what)?

• What type of signals are common in Telecommunication System ?

• How can billions of bits, from different sources be transmitted so efficiently?

• Do signals get mixed in a Telecommunication System?

• Can regular voice be transmitted through a network?

• What is a hot spot? Can you create one?

• What is a protocol?

• Can thousands of conversations go through a single wire? How

What's the technique?

• The Storage size is measured in _______________

The Speed of transmission is measured in ------------------ ------------------

• If a file is of 1 mega, it means that its storage size is _______________ ______________

• If a modem's speed is 1 mega, it means that it can send/receive ___________ _______ ___ ______

• How long does it take to receive a webpage if it has 3 pictures (of 1 mega each) and the speed is 10 mega?

• Do you have enough bandwidth? How much is enough?

• Is Fiber Optics Faster or Cable? Which one is thinner?

• What is the main differences between Internet, WAN, LAN, PAN?

• What do you Need to do WiFi?

Send True/False questions for the test to be combined for Multiple choice Questions, example: 1. Which of the following is true?

a. Voice/Music in original form can be transmitted through Internet

b. Sometimes, 2 or more email messages get mixed up.

c. A WiFi network must use a certain Protocol

d. all of the above are true.

2. Which of the following is not true? (False)

a. Often, thousands of conversations go through a single media

b. Sending/receiving a picture in GIF takes much more time than in JPG

c. Your bandwidth plays an important role in streaming (Video, programs, etc)

3. Which of the following is true?

a. The only differences between Internet, WAN, LAN, PAN is the distance.

b. A Packet must contain sender/receiver Address

c. it takes 1 second to send a file of 1 mega, with a modem of 1 mega

d. all are true.