Title: Chapter 1 Important Ideas Williams
1Chapter 1 Important Ideas(Williams
Tollett)Dr. McNierney
- What is the Web?
- Internet
- History of Internet
- Connect computers to computers gt network
- Store data and sends it out
- ISP (Internet Service Provider)online
serviceconnects computer to Internet -
2What is the Web?Chapter 1 - Key Ideas
(Williams Tollett)Dr. McNierney
- 2. Modem ( Basics gt 2 types)A device that
modulates an analog signal to encode digital data
and demondulates a signal to decode the
transmitted data. - How does it work?
-
3What is the Web?Chapter 1 - Key Ideas
(Williams Tollett)Dr. McNierney
- 2. Modem
- Classified by the amount of data they send in a
given time - measured in bits per second (bps) - Dial -up using a phone line (analog)
- Broadband can be cable, satellite, DSL
high-speed -
4What is the Web?Chapter 1 - Key Ideas
(Williams Tollett)Dr. McNierney
- 3. Speeds
- Baud Rate - How fast data is received
- 56 k - typical dial-up
- High speed - varies up to 1500 bits per second
examples satellite, cable, T1, DSL, ISDN -
5What is the Web?Chapter 1 - Key Ideas
(Williams Tollett)Dr. McNierney
- 4. Online Services and ISP
- ISP - Internet Service Provider
- gt direct to Internetgt connected to a server
- AOL (or similar) provides access to Internet not
direct
6What is the Web?Chapter 1 - Key Ideas
(Williams Tollett)Dr. McNierney
- 4. What is on the Internet? Define each with how
they can be used - Newsgroups
- Mailing lists
- Search engines
- Blogs
- Podcasts
7What is the Web?Chapter 1 - Key Ideas
(Williams Tollett)Dr. McNierney
- 5. What is the World Wide Web?
- Describe what is contained on the web.
- What is hypertext?
- What is the home page of each site called?
- What can affect the time to load a page?
8What is the Web?Chapter 1 - Key Ideas
(Williams Tollett)Dr. McNierney
- 5. Browsers
- Software on computer that allows user to use
the web. - Identify several browsers
- Safari - Mac
- Netscape
- Internet Explorer
- FoxFire
9What is the Web?Chapter 1 - Key Ideas
(Williams Tollett)Dr. McNierney
- 6. Web Addresses or URL
- Uniform Resource Locator (URL) - each page has an
address - Every page stored on a server
- Host - server that posts the site
10What is the Web?Chapter 1 - Key Ideas
(Williams Tollett)Dr. McNierney
7. Parts of web address http//www.cnn.com/news/
sports
World Wide Web
Hypertext transfer protocol
Domain name - who owns the site
Path, tells browser where to find page
11What is the Web?Chapter 1 - Key Ideas
(Williams Tollett)Dr. McNierney
- 8. Domain Name
- Defines the nature of the web site
- What are some examples?
- .com ( Commercial)
- .net ( Network organization)
- .edu ( Educational - post secondary only)
- .gov ( Government - US only)
- .mil ( Military)
12What is the Web?Chapter 1 - Key Ideas
(Williams Tollett)Dr. McNierney
- 8. Downloading Files
- The file extension indicates how the file was
compressed or encoded - What are examples?