University of Washington CSE 154

Section 1: Internet and WWW

Except where otherwise noted, the contents of this document are Copyright © Marty Stepp, Jessica Miller, and Victoria Kirst. All rights reserved. Any redistribution, reproduction, transmission, or storage of part or all of the contents in any form is prohibited without the author's expressed written permission.

Section 1

This section is about the Internet and the World Wide Web (WWW). Most sections will have exercise problems to work on, but since we have just begun the quarter, this one is more casual and conversational in nature.

Many of these problems don't have an obvious well-known answer, and some don't have a single correct answer. The point is just to get everyone talking and participating and talking about the web.

Exercise : Ballparking

1. What do you think are the top 10 most visited sites on the web today? How would you find out what they actually are?
2. What is one of your favorite web sites not listed among those top 10, and why? Do you have a favorite web "meme"?
3. What is one of the WORST sites on the web, and why?
4. How many internet protocols (e.g. http at the beginning of a URL) can you name?
5. .com, .net, and .edu are examples of Top-Level Domains (TLDs). How many more TLDs can you name? What are the most recent TLDs to be created?
6. What are the top 5 web browsers in market share? How many other web browsers are there?

Exercise : History

1. Can you name two people prominently involved in the history of the internet?
2. What was one of the first web sites you used regularly?
3. What was the first email, and when was it sent?
4. What were the first 20 domain names to be registered?
5. Why are we “running out” of IP addresses? How many are there? What is being done about this?
6. What is one major change that you think will happen to the web within the next 5-10 years?

Exercise : Spelunking

1. How would you find out the IP address of a website? Does it ever change?
2. How many computers does a piece of data travel through between you and google.com? How can you find out?
3. What's the difference between your local IP address and your internet IP address?
4. Follow the commands on this lecture slide to simulate being a browser. How is this different from Viewing the Source of a document in your browser?
5. What type of web server software is our course web server (webster.cs.washington.edu) running? How can you find out?
6. Can you find a website whose server software listens on a port other than 80?
7. What internet programs (other than web browsers and email programs) do you use regularly? What TCP port(s) do they communicate on?

Exercise : Terminology / Jargon

How many of the following internet/web terms do you know? Pick a term and explain what it is.

1. 4chan
2. Apache
3. bandwidth, latency, throughput, broadband
4. blog
5. bookmark
6. brogrammer
7. Brony
8. browser plug-in
9. bump
10. cache
11. CAPTCHA
12. cloud computing
13. cookie
14. cosplay
15. domain name
16. Dreamweaver
17. firewall
18. flame war
19. Foxkeh
20. frag
21. frame
22. gopher
23. guild
24. hashtag
25. imba
26. ISP
27. LAMP
28. LAN
29. LARP
30. Linux
31. mashup
32. meme
33. mirror
34. newb
35. open source
36. P2P
37. ping
38. podcast
39. portal
40. proxy
41. raid
42. RFC
43. rick roll
44. RSS feed
45. script
46. spawn camper
47. spyware
48. tag cloud
49. tweet
50. VoIP
51. web crawler (or web spider)
52. wiki
53. Y U NO

Some dictionaries of web slang:

• http://www.matisse.net/files/glossary.html
• http://www.lib.berkeley.edu/TeachingLib/Guides/Internet/Glossary.html
• http://www.netlingo.com/dictionary/

Exercise : Sample Page

• Create a simple web page that contains a list of links to some of the favorite web sites, memes, etc. of the students in the section. If you like, you can include images for the sites/memes.
• Example:

  My favorite memes

  • Intoxicated honey badger
  • Star Wars Kid
  • Evil Bert
  • ZomboCom

Unordered list: <ul>, <li>

ul represents a bulleted list of items (block)
li represents a single item within the list (block)

<ul>
	<li>No shoes</li>
	<li>No shirt</li>
	<li>No problem!</li>
</ul>

More about unordered lists

• a list can contain other lists:

<ul>
	<li>Simpsons:
		<ul>
			<li>Homer</li>
			<li>Marge</li>
		</ul>
	</li>
	<li>Family Guy:
		<ul>
			<li>Peter</li>
			<li>Lois</li>
		</ul>
	</li>
</ul>

Ordered list: <ol>

ol represents a numbered list of items (block)

<p>RIAA business model:</p>
<ol>
	<li>Sue customers</li>
	<li>???</li>
	<li>Profit!</li>
</ol>

Exercise : Uploading to a Web Server

Upload a web page to our Webster server following the directions on our Uploading Files page. Then view the page in the browser.