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Safeguarding Data: Backups, Surge Protectors, and More

Explore strategies to protect against system failure, such as backups, UPS, and mirroring data. Learn about risks, reliability, security vs. privacy, Internet applications, and web essentials like hypertext and domain names. Stay informed to keep your data secure!

emmanuel-garrett
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Safeguarding Data: Backups, Surge Protectors, and More

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Presentation Transcript

  1. Protecting Against Failure • Backups – multiple generations • Surge Protector – power surges • UPS – uninterrupted power supply • Mirroring data / RAID

  2. People are Risky • don’t see themselves as a risk. • work around security.

  3. Reliability • when we rely on computers, and something goes wrong, the impact can be significant : • Therac 25 • Y2K – $100 billion • cannot find all of the bugs • they harder bugs are to find, the worse they are may be. • increased complexity compounds the problem.

  4. Security vs. Privacy • balancing. • examples : • e-mail at work • cell phone with GPS • active badge

  5. Internet & Web • the World Wide Web and the Internet are not the same thing. • WWW – an application of the Internet. • Popularity : • easy to use. • easy to add • easy to search.

  6. Internet Applications • email & mailing lists • FTP & file sharing • Usenet & boards & forums • World Wide Web • Instant Messaging & Chat • Remote Login & Telnet • VOIP

  7. Web • distributed information system. • hypertext & hypermedia. • browser : software for accessing www. • Plug-in : extend the capabilities of your web browser.

  8. Hypertext & Hypermedia • documents linked in non-linear ways • web is only one example (help files, DVDs, multimedia applications)

  9. Hypertext & Hypermedia • may not have the links you want • dead links – maintenance • not like hardcopy – notes and highlighting • hard to read long passages of text on the computer screen • disorienting

  10. Web • url : uniform resource locator • http : hypertext transfer protocol • html : hypertext markup language • web authoring tools • Domain name registry

  11. <html> <head> <title>Web Example</title> </head> <body> <h1>CSCI 1200</h1> <p> CSCI 1200 is a computer science class offered for non-majors. </p> </body> </html>

  12. Tags • anchor tag <a href="url">Text to be displayed</a> • image tag <img src = “happy.gif“>

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