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Getting Started with Applied Computer Concepts

Getting Started with Applied Computer Concepts. Computing Concepts: Part 2. Objectives. Identify network architecture Identify network components Connect to the Internet Navigate the Web Explore telephony and other uses of the Internet Choose e-commerce options Protect yourself online

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Getting Started with Applied Computer Concepts

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  1. Getting Started with Applied Computer Concepts Computing Concepts: Part 2 Computing Concepts – Part 2

  2. Objectives Identify network architecture Identify network components Connect to the Internet Navigate the Web Explore telephony and other uses of the Internet Choose e-commerce options Protect yourself online Maintain security Protect your computer and yourself Computing Concepts – Part 2

  3. Understanding Networks • Network: two or more computers linked • Share resources • Exchange data • Internet: largest computer network in world Computing Concepts – Part 2

  4. Understanding Networks (continued) • Advantages • Sharing resources and data • Reduced hardware and software costs • Centralized data management • Connecting people • Disadvantages • Loss of personal autonomy • Privacy and security threats Computing Concepts – Part 2

  5. Identifying Network Architecture Server Printer Router Computer Computer Computing Concepts – Part 2

  6. Understanding Client-Server Networks Clients Clients Server Computing Concepts – Part 2

  7. Understanding Peer-to-Peer Networks Computing Concepts – Part 2

  8. Identifying Network Components • Transmission media • Connect the nodes of a network • Provide a communication channel • Network adapters • Enable nodes to communicate • Software • Manages operations of network Computing Concepts – Part 2

  9. Understanding Transmission Media • Data transfer rate or bandwidth • Megabits per second • Wired • Telephone wire • Cable • Fiber optics • Wireless • Radio waves Computing Concepts – Part 2

  10. Identifying Network Adapters Wireless network adapter Network interface card (NIC) Computing Concepts – Part 2

  11. Understanding Data Transfer Computing Concepts – Part 2 • Packets • Network navigation device • Network adapter • Router • Transfers packets between networks • Connect home network to the Internet • Switch • Determines path and final location for data transfer • Network operating system

  12. Understanding Home Networking Ethernet: • Wired • Requires network adapters on nodes • Router and switch required Wireless Ethernet: • Radio waves • 802.11 standard or Wi-Fi • Nodes require a wireless network adapter • Wireless router required Computing Concepts – Part 2

  13. Connecting to the Internet Computing Concepts – Part 2

  14. Navigating the Web Computing Concepts – Part 2

  15. Searching for Information Use different search engines Use a web portal or gateway website Use a subject directory Use a metasearch engine Use Boolean operators Computing Concepts – Part 2

  16. Exploring Telephony • Internet telephony • VoIP • Webcam • Microphone/headset • Services • Skype • Windows Messenger • Google Voice • Vonage • Yahoo! Voice Computing Concepts – Part 2

  17. Understanding Podcasts, Webcasts, and Blogs • RSS feed • Push technology • RSS newsreaders • RSS symbol Computing Concepts – Part 2

  18. Understanding Social Media • Facebook • LinkedIn • Twitter • MySpace Computing Concepts – Part 2

  19. Understanding E-commerce Options Computing Concepts – Part 2

  20. Protecting Privacy • Collection of data • History file • Spyware • Cookies • Web bugs • Keystroke loggers Computing Concepts – Part 2

  21. Protecting Your Electronic Profile • Set up an alternate e-mail • Share only required information • Google yourself Computing Concepts – Part 2

  22. Protecting Security • Threats: • Theft of hardware • Theft of software • Viruses • Malware • Credit card fraud • Phishing • E-mail scams • Strategies: • Don’t leave devices unsecured • Don’t use software illegally • Most music isn’t free • Back up data • Regularly scan using anti-virus software • Don’t respond to questionable e-mail Computing Concepts – Part 2

  23. Understanding Online Threats • Spam • Internet fraud • Non-delivery of merchandise • Auction fraud • Credit or debit card fraud • Phishing • Pharming • Trojan horses • Viruses • Worms Computing Concepts – Part 2

  24. Protecting Yourself and Your Computer • Firewall • Proxy server • Antivirus programs Computing Concepts – Part 2

  25. Using Passwords • Strong passwords: • Sufficient length • Variety of characters • Upper and lowercase letters • Numbers • Special characters Computing Concepts – Part 2

  26. Avoiding Scams If it sounds too good to be true, it probably is Do business with established companies Check the return policy and customer service policy Use secured websites for personal information Computing Concepts – Part 2

  27. Using Encryption • Hypertext Transfer Protocolover Secured Socket Layer • https • Public key encryption • Public key • Private key Computing Concepts – Part 2

  28. Summary Networking enables communication between computers The Internet is the world’s largest network Security and privacy are important issues that all computer users must address Computing Concepts – Part 2

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