chap 2

• Internet


  A global network of computers connected, allowing for the sharing and transmission of data
• The Internet was developed as a project by the U.S. Department of Defense


  1960s
• The Internet evolved into a public infrastructure

  1990s
• TCP/IP


  Transmission Control Protocol/Internet Protocol - Protocols that govern data transmission on the Internet
• Internet infrastructure


  • Servers
  • Routers
  • Fiber optic cables
• Servers


  Store and send data
• Clients


  Request and receive data from servers
• IP Addresses


  Unique addresses for each device on the Internet
• Domain Name System (DNS)

  Translates domain names into IP addresses
• Data Transmission


  Data is broken into packets, sent through various routes, and reassembled at the destination
• Routers


  Direct traffic on the Internet
• Modems


  Connect your network to your Internet Service Provider
• Data


  Everything online (like websites, emails, videos)
• Packets


  Small bits of data
• IP Addresses


  Unique addresses for each device, like a house address
• Routers


  Direct the data packets to their destinations
• Cables and Wi-Fi


  The roads and airways that data packets travel on
• Internet Service Providers (ISPs)


  Connect your home to the Internet and help send and receive your data packets
• Servers


  Store data and websites
• Cloud Computing


  Technology that allows individuals and organizations to access and use computing resources over the Internet
• Cloud service models


  • Public Cloud
  • Private Cloud
  • Hybrid Cloud
• Infrastructure as a Service (IaaS)

  Provides fundamental computing resources like virtual machines, storage, and networks
• Platform as a Service (PaaS)


  Offers hardware and software tools over the internet, usually for application development
• Software as a Service (SaaS)


  Delivers software applications over the internet, on a subscription basis
• Benefits of Cloud Computing

  • Cost Efficiency
  • Easily Adjusts Resources
  • Business Continuity
  • Facilitates Remote Teamwork
  • Automatic Updates
• Challenges of Cloud Computing

  • Data Transfer Costs
  • Downtime Risks
  • Security and Privacy Concerns
  • Limited Control Over Operations
  • Vulnerability to Cyber Threats
• IaaS users


  • Netflix uses Amazon Web Services
  • Snapchat relies on the Google Cloud Platform
• PaaS users


  • Toyota uses Microsoft Azure
  • Spotify employs Google Cloud
• SaaS users


  • PepsiCo utilizes Salesforce
  • Airbnb uses Google Workspace