CIS- Internet

The physical infrastructure that allows us to connect & store content

Developed for secure military communications • Evolved from Advanced Research ProjectsAgency Network (ARPANET)• Funded by the U.S. government in the 1960s • Enabled computers at leading universities &research organizations to communicate with each other

Non profit organizations, user groups

The Web is part of the Internet, distinguished by • Common communication protocols• Hyperlinks

A system of content that resides on Internet servers• Web 2.

0 involves interaction of users with content• Web 3.0 (Semantic Web) involves integrating data from various sources in a meaningful way

• Electronic mail• Asynchronous communication • Types of e-mail accounts• Client-based• Web-based • Not private• Can be printed or forwarded • Employer can monitor

Client/server program for real-time, text-based conversations• Personal & business uses• List of contacts: buddy list• IM software detects members' presence • Popular IM programs• AOL Instant Messenger• ICQ• Yahoo! Messenger• Windows Live Messenger

Allows inexpensive or free long-distance phone calls over the Internet• Some cell phones are VoIP enabled• Customers must be able to connect to a Wi-Fi signal• Uses packet switching• VoIP: Using the Internet to place phone calls• Uses technology similar to e-mail to send voice data digitally• Requires speakers, a microphone, an Internet connection, & aVoIP provider• VoIP services differ:• Free services require an account on both ends• Paid services connect phone to computer• Cable/DSL providers offer phone through broadband• Wi-Fi IP phones call through Internet hotspots & wireless networks

Advantages• Free or low cost • Portability• ConvenienceDisadvantages• Lower sound quality • Less reliability• Loss of service whenpower is interrupted • Security issues

Chat rooms• Newsgroups• Listservs• Blogs & vlogs• Wikis• Podcasts & webcasts • Social networks

Dial up connection and broad band connection

• Use standard telephone line • Tie up phone line• Require a modem to convert analog & digital signals• Slowest connection speed (56 Kbps) • Lowest cost

Types of Internet broadband connections include: • DSL• Cable• FiOS• Satellite• Hardware to connect• Wired or wireless connections

Uses telephone lines• Faster than dial-up• Doesn't tie up phone line• Requires special DSL modem • Not available in all areas

Uses coaxial cable & a cable modem • Fast connection speed• Speed depends on number of users • Not available in all areas

Sends light through fiber optic lines Faster than cable or DSLExpensive Available only in certain areas

Uses satellite dish & coaxial cable • Slower than cable or DSL• Expensive

• Increases mobility & productivity• Requires a Wi-Fi hotspot• Requires either internal or external wireless access card for device• Aircards provide wireless access through mobile devices when a Wi-Fi hotspot is not available

Used to navigate online content• Translate content• Display text, graphics, & multimedia content• Examples include Mozilla Firefox, Internet Explorer, Google Chrome, & Safari

Quick tabs: Show thumbnail images of all open Web pages in open tabs• Tabbed browsing: Multiple pages available in the same browser window• Built-in search engine(s)ex. mozilla firefox ..

• Computer software• Graphical• Enables Web navigation

series of numbers that uniquely identifies an Internet location

IPv4 addressing scheme didn't foresee explosive growth• Internet Protocol version 6 (IPv6)• Longer IP addresses• Many companies & government agencies are starting toswitch to IPv6

text address entered in a browser to go to a websiteand unique website address URL is crossed reference to an IP address

.biz, .com, .edu, .gov, .info, .mil, .int, .name, .net, .org

Hyperlinks identify a Web destination• Hyperlinks can be embedded in any graphicalobject or text

Search engines are websites in which you enter search terms (keywords) to find Web content• Examples: Google, Yahoo!, Ask, or Bing• Search directories catalog results• Metasearch engines search across various sitesat the same time

User keys word or phrase into search box• Spider or Web crawler program scans Webpages• Results are indexed & sent to the client• Different engines produce different hit lists• Multimedia search functionality is also available

includes hidden or uncataloged databases• Most search engines can't find this content

It's illegal to copy intellectual or copyrighted property• Ease of copying & pasting content online leads to violations• Peer-to-peer file sharing issues • Digital Millennium Copyright Act

Avoid:• Plagiarism: Representing someone else's ideas orwords as your own.• Copyright violation: Using another person's material foryour own economic gain• Properly credit information you quote orparaphrase• Obtain written permission from copyright holder

• Internet entrenched in daily life• Web-based services for personal & professionalinteractions• Internet-enabled appliances & systems

Large scale networking (LSN)• Research & development of cutting-edge networking technologies • Internet2• Project sponsored by universities, government, & industry to develop new Internet technologies• Internet2 backbone supports transmission speeds of 9.6 Gbps

• The Internet in space as astronauts begin to Tweet• Collaborative emails with rich multimedia content• Nanorobots transmitting data from within yourbody