3A

• The Internet is the largest computer network in the world that connects billions of computer users
• The word "internet" comes from a combination of "interconnection" and "network"
• A network is a collection of computers and devices connected via communication channels and transmission media that allow sharing of resources
• ARPA started an experimental computer network in January 2, 1969
• In 1982, the word "internet" started to be used
• Vinton Gray Cerf is recognized as one of "the fathers of the Internet" along with TCP/IP co-developer Bob Kahn
• Servers are computer programs that provide services to other computer programs and their users
• Types of servers include Application Server, Web Server, Proxy Server, Mail Server, File Server, and Policy Server
• An Application Server provides business logic for an application program and allows web apps development and server environment for running them
• A Web Server is a computer where web content is stored and responds to requests for web resources
• A Proxy Server acts as an intermediary between an endpoint device and another server
• A Mail Server receives incoming e-mail and forwards outgoing e-mail for delivery
• A File Server is responsible for central storage and management of data files for network access
• A Policy Server is a security component of a policy-based network that provides authorization services and facilities tracking and control of files
• A Browser is an application program that provides a way to look up information on the web
• An IP Address (Internet Protocol) is a numerical label assigned to each device to provide identity to a network device
• The Domain Name System (DNS) is the phonebook of the internet that allows access to information online through domain names
• An Internet Service Provider (ISP) is an organization that provides services for accessing, using, or participating in the internet
• There are two types of ISPs: National ISP and Regional ISP
• Uses of the internet include looking for information, school work, jobs, sending and receiving electronic mail, video teleconferencing, buying and selling products, social networking, watching and posting videos, playing games, taking college courses, monitoring home while away, financial transactions, and downloading music and movies
• Internet Terms and Definitions:

  • Internet: A global network of thousands of computer networks linked by data lines and wireless systems
  • Web: A collection of billions of webpages that can be viewed with a web browser
  • Email: The most common method of sending and receiving messages online
  • Social media: Websites and apps that allow people to share comments, photos, and videos
  • Online gaming: Games that allow people to play with and against each other over the Internet
  • Software updates: Operating system and application updates can typically be downloaded from the Internet
• • HTML: Hypertext Markup Language used to create web pages
  • URL: Uniform Resource Locator is a web address used to connect to a remote resource on the World Wide Web
  • Bit: A single digit in the binary numbering system
  • Byte: Generally consists of eight bits
  • Upload: Transfer data from your computer to another computer
  • Download: Transfer data from another computer to your computer
  • HTTP: Hypertext Transfer Protocol, the data communication standard of web pages
  • HTTPS: Hypertext Transfer Protocol Secure, adds a layer of encryption to hide personal information and passwords
• • Router: Modem combination that acts as the traffic cop for network signals
  • Encryption: Mathematical scrambling of data to hide it from eavesdroppers
  • Web Bot: Programs/applets used on the Internet for repetitive functions
  • Search Engine: Specialized software that lets users search for information on the web using keywords and phrases