6.04 IP Addresses and Domain Names

6.4 IP Addresses and Domain Names Curriculum Page

Portfolio Reflection Questions:

1. What is DNS and how does it work? How does DNS help you connect to a web server like Amazon?
   • DNS (Domain Name Server) is a network of servers that maintain routing tables (a directory) to associate domain names with IP addresses. DNS helps connect users to a web server by translating easy to remember domain names into IP addresses that is returned for a web page to be displayed. As for Amazon, the DNS would translate the domain name www.amazon.com into its corresponding IP address and go through protocols to reach the web page of Amazon.
2. Include a screenshot of your message log in the DNS Simulation app in Activity
   • Attached below.
3. (POGIL) Discuss why and how a list variable would be a better choice for storing the recipient’s multiple messages in the DNS simulation app.
   • A list variable would be a better choice for storing the recipient's multiple messages in the DNS simulation app because it would enable a user to store and access more than one message at a time. In addition, it would enable easier access to the messages and they would be easier to save and delete messages in the inbox (one by one).
4. (POGIL) Include the pseudocode algorithms you developed for the sender and receiver to handle multiple messages to a recipient.
   • Attached below.

6.4 POGIL Questions: