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Analyzing Technology Issues

Computer Basics. Analyzing Technology Issues. BCT 2.00 2.02 & 2.04. Computer Crime. A criminal act committed through the use of a computer. It can also involve the theft of a computer and any equipment associated with the computer. Computer Hacking. Computer hacking

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Analyzing Technology Issues

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  1. Computer Basics Analyzing Technology Issues BCT 2.00 2.02 & 2.04

  2. Computer Crime • A criminal act committed through the use of a computer. It can also involve the theft of a computer and any equipment associated with the computer.

  3. Computer Hacking • Computer hacking • Involves invading someone else’s computer, usually for personal gain, bad intentions or just the satisfaction of invasion.

  4. Computer Viruses A virus is a program that has been written to cause corruption of data on a computer.

  5. Types of Computer Viruses • Worm • Makes many copies of itself, resulting in the consumption of system resources that slows down or actually halts tasks. • Time bomb • Virus that does not cause its damage until a certain date or until the system has been booted a certain number of times. • Logic bomb • Virus triggered by the appearance or disappearance of specified data. • Trojan horse • Virus that does something different from what it is expected to do.

  6. Security Measures • Passwords – safeguards access • Firewalls - a part of a computer system or network that is designed to block unauthorized access while permitting authorized communications. It is a device or set of devices which is configured to permit or deny computer applications based upon a set of rules and other criteria. • Antivirus software – protects from most viruses

  7. What is a browser? • The software program that you use to retrieve documents from the World Wide Web (WWW) and to display them in a readable format. • Examples: • Internet Explorer • Netscape Communicator

  8. Title Bar Menu Bar Tool Bar

  9. Electronic Mail Addresses (email) • The address consists of three parts: • The user name of the individual • The @ symbol • The user’s domain name • Example: rsmith@yahoo.com domain name User’s name

  10. What is a search engine? • A tool that lets you find Web pages that match a particular word or phrase. • Examples of search engines: • Altavista -Bing • Google -HotBot • InfoSeek -Excite

  11. Background of the Internet • Early origin in 1960s • Closely tied to a networking project started by a governmental division called the Advanced Research Projects Agency. • Original name: ARPANET • Created so that scientists were able to share information on military and scientific research. • The World Wide Web (www) began in March 1989 when Tim Berners-Lee wrote a small computer program for his personal use.

  12. Web Protocols • HTML • Hypertext Markup Language • A series of tags that are integrated into text documents and describes how the text should be formatted when a Web browser displays it on the screen. This is the language used to create documents for the World Wide Web. • HTTP • Hypertext Transfer Protocol • Standard that defines how messages are formatted and transmitted.

  13. Chat Rooms & Options • Internet Relay Chat (IRC) - Using the computer to create real-time communication between yourself and another user or a group of users. • A text-based chat developed by JarkkoOikarinen in 1988. • One of the most widely used chat forums on the Internet today. • Buddy List – when you specify your list of friends who can tell when you are online

  14. Mailing Lists • A group of people with a shared interest. • Their email addresses are collected into a group, and this group is identified by a single name. • When a message is sent to the group, everyone on the list receives that message.

  15. Newsgroups • A discussion forum or a type of bulletin board. • Each board is dedicated to discussion on a particular topic. • USENET • Worldwide network of computers that facilitates the transmission of messages among the news servers.

  16. Types of Search Engines • Keyword Search* • Uses keywords to perform search • Multimedia Search Engines • Used to find graphics, video clips, animation, and MP3 music files. • Meta Search Engines • Search several major search engines at one time. • Subject Directories • Organized by subject categories and displayed in a series of menus.

  17. Privacy and Security IssuesBE CAREFUL! • Anything that you submit electronically – by computer, phone, etc. can be accessed by many, many people & used in various ways. • NOTHING is ever really deleted!!! • Protect yourself – don’t email, text anything that you would not want your mother, father, minister, principal, etc. to see

  18. Questions to ask yourself • 1. Which is a text-based chat forum? • 2. What was the original name of the Internet? 1-IRC 2-ARPANET

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