CS 1.3 Internet Communications

• Domain Name System


  Looks up the URL to find the IP address of the website requested by the client

  
• Hosting


  Storing and sharing a website on the WWW on behalf of someone else.

  
• Web Server


  The computer that runs a website and makes it available on the WWW

  
• Internet


  A global network made of devices, cables, satellite links and protocols. It sits underneath the WWW and routes the data

  
• Client


  A computer which connects to a web server and requests web pages and displays them in a browser

  
• Uniform Resource Locator


  The unique address used to locate a resource on the world wide web.

  
• Bandwidth


  The rate at which data can be transferred over a network, measured in bits per second (bps)

  
• World Wide Web


  A collection of websites, apps and streaming services. They can be accessed using the internet.

  
• Cloud


  A collection of computing services provided by companies over the internet, including data storage, backup, web hosting, payment services and software platforms

  
• Backup


  A typical cloud service that saves a copy of your data. You can restore data from your cloud copy if your local data is lost through hardware failure or destroyed by malware

  
• Software


  We can run this in the cloud, for example REPL.IT is a cloud Python IDE. Amazon, Google and Microsoft can run applications for you in the cloud such as financial services or AI chatbots

  
• Storage


  Data is saved here, which can be in the cloud. Data in the cloud can be accessed anywhere with an internet connection, but some people worry about security