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Computer Networking & HTML

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Computer Networking & HTML

  1. 1. Information Technology- Dr. Mark N. Abadiano
  2. 2. Information Technology- Dr. Mark N. Abadiano The Internet -is a global network providing a: • variety of information and •communication facilities consisting of interconnected networks using standardized communication protocols.
  3. 3. Information Technology- Dr. Mark N. Abadiano Advantages of the Internet  Faster Communications  Abundant Information Resources  Inexhaustible Education  Entertainment for Everyone  Social Networking and Staying Connected  Online Services and E-Commerce
  4. 4. Information Technology- Dr. Mark N. Abadiano Disadvantages of the Internet • Theft of Personal Information • Spamming • Malware Threats • Age Inappropriate Content • Social Isolation, Obesity and Depression
  5. 5. Information Technology- Dr. Mark N. Abadiano Network Topologies Topology- the structure of network. 2 Parts of Topology  Physical Topology -actual layout of the wire(media)  Logical Topology -how media is accessed by hosts
  6. 6. Information Technology- Dr. Mark N. Abadiano Types of Topologies 1. BUS Topology 2. RING Topology 3. Star Topology
  7. 7. Information Technology- Dr. Mark N. Abadiano Types of Topologies 4. EXTENDED STAR Topology 5. MESH Topology 6. HIERARCHICAL Topology
  8. 8. Information Technology- Dr. Mark N. Abadiano HOST -Devices that connects directly into network segment Host includes:  Computer  Both clients and servers  Printers  Scanners  Other devices
  9. 9. Information Technology- Dr. Mark N. Abadiano • Network Interface Card (INC) — printed circuit board that fits into the Expansion slot of a bus on a computer’s motherboard or peripheral devices.
  10. 10. Information Technology- Dr. Mark N. Abadiano  Repeater — an electronic device that receives a signal and retransmits it a higher level so signal can cover longer distances.
  11. 11. Information Technology- Dr. Mark N. Abadiano  Bridge — device which has two parts  Switch — concentrate connectivity, while making data transmission more efficient
  12. 12. Information Technology- Dr. Mark N. Abadiano  Router — examine packets and chooses best path for them In a network and switch them to The proper outgoing port
  13. 13. Information Technology- Dr. Mark N. Abadiano Different Web Browsers 1. Internet Explorer — First component of Windows used in 1995  Supports: • Java • RSS • CSS • JavaScript • ActiveX *for downloading videos, songs, or software
  14. 14. Information Technology- Dr. Mark N. Abadiano 1. Internet Explorer  Pros:  Free to download at no cost  Offers help option  Provides speed and functionality  Easy to use  Mostly used throughout the world
  15. 15. Information Technology- Dr. Mark N. Abadiano 1. Internet Explorer  Cons:  There are bugs  Microsoft is unaware of finding bugs  Slow installation  Lack of built in features  Confusion between versions  Lack of cross platform experience
  16. 16. Information Technology- Dr. Mark N. Abadiano 2. Safari —Web browser produced and developed by apple — Functions on a Mac OX, iOS, and windows system — First out in public in January 7, 2003 — Generally for Mac user
  17. 17. Information Technology- Dr. Mark N. Abadiano 2. Safari Pros:  Easy to use  Page-load times impressive  Provides all security features  Cleans up unnecessary junk  Great for Mac user
  18. 18. Information Technology- Dr. Mark N. Abadiano 2. Safari  Free to Download  Speed compatibility  Extremely fast to download for Mac users
  19. 19. Information Technology- Dr. Mark N. Abadiano 2. Safari  Cons:  Lack of customization options  Support system may be missing  Trouble with Google built-in search engine  Difficulty deleting cookies on exit automatically
  20. 20. Information Technology- Dr. Mark N. Abadiano 3. Google Chrome —Freeware browser created by Google —First released on Windows OS —Launched on September 2, 2008
  21. 21. Information Technology- Dr. Mark N. Abadiano 3. Google Chrome  Pros:  Fast browsing performance  More control over your tabs  More dynamic homepage  More speed and won’t slow down
  22. 22. Information Technology- Dr. Mark N. Abadiano 3. Google Chrome  Makes searching so much simpler  Easy to use  Great security  Free to download at no cost  Built-in Flash and PDF support  Has sync capabilities
  23. 23. Information Technology- Dr. Mark N. Abadiano 3. Google Chrome  Cons:  Lack of parental control  Minor site incompatibilities  Graphic acceleration doesn’t work
  24. 24. Information Technology- Dr. Mark N. Abadiano 4. Firefox — Free and open source web browser — Coordinated by Mozilla Corporation and Mozilla Foundation — First version released: November 9,2004 — Now available on 78 languages worldwide
  25. 25. Information Technology- Dr. Mark N. Abadiano 4. Firefox  Pros: More secure privacy mode More intuitive navigation Contain minimalist interface Offers lot of help and support Ease of use
  26. 26. Information Technology- Dr. Mark N. Abadiano 4. Firefox  More customization  Speed and more compatible  Easy to have add-on  Free to download at no cost
  27. 27. Information Technology- Dr. Mark N. Abadiano 4. Firefox  Cons:  No thumbnail preview or mouse gestures  Resource heavy
  28. 28. Information Technology- Dr. Mark N. Abadiano (Hypertext Mark-up Language) — set of text command used to format webpage
  29. 29. Information Technology- Dr. Mark N. Abadiano (Hypertext Mark-up Language)  HTML tag — code element that tells the web browser what to do. — Appears as letters or words between: • < (less than sign • > (greater than sign) • / (forward slash) tells the web browser to “end”.
  30. 30. Information Technology- Dr. Mark N. Abadiano (Hypertext Mark-up Language)  Basic Tags  <h1> Largest Heading <h1>  <h2> ………………….….. <h2/>  <h3> ……………………… <h3/>  <h4> ……………………… <h4/>  <h5> …………………….. <h5/> <h6> Smallest Heading<h6/>
  31. 31. Information Technology- Dr. Mark N. Abadiano (Hypertext Mark-up Language)  Formatting Tags <b> bold <b/>  <code> com code <code/> <em> emphasized <em/> <i> italized <i/> <small> smaller text <small/> <pre> preformatted <pre/>
  32. 32. Information Technology- Dr. Mark N. Abadiano (Hypertext Mark-up Language)  Links Ordinary link  <a href=http://www.briese.com/”>Lin-text here</a>  Image-link  <a href=“http://www.briese.com/”><img src=“URL” alt=“Alternate Text”><a/>  Mailto link  <a rhef=mailto:webmaster@briese.com>Send e-mail</a>
  33. 33. Information Technology- Dr. Mark N. Abadiano (Hypertext Mark-up Language)  Boomarks  <a id=“tips”>Tips Section </a> <a rhef=“#tips”>Jump to Tips Section</a> Images  <img src=“URL” alt=“Alternate Text” height=“42” width=“42”>
  34. 34. Information Technology- Dr. Mark N. Abadiano (Hypertext Mark-up Language)  Styles/Sections  <style type=“text/cost”> h1 {color:red;} p {color:blue;} </style>  Unordered List  <u><li>Item</li><<u/>  Ordered List  <ol><li>First Item</li></ol>
  35. 35. Information Technology- Dr. Mark N. Abadiano (Hypertext Mark-up Language)  Tables  <Table border=“1”> <tr><th>table header</th></tr> <tr><td>table data</td> </table> Iframe <iframe>=“demo_form.asp.html”>>/iframe> =
  36. 36. Information Technology- Dr. Mark N. Abadiano Prepared By: D/C Narciso, John Blitzkrieg D/C Mendez, Welson D. D/C Paquibot, Marlon D/C Muego, Vincent Mel D/C Moratin, Jericho Engr. Mark N. Abadiano Information Technology Instructor

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