Domains and DNS - 2024 Review

What is the main purpose of an IP address on the Internet?

• To send emails
• To identify a specific device on the network
• To protect users from cyber attacks
• To convert domain names to HTML

The Domain Name System (DNS) is used to:

• Encrypt messages
• Associate domain names with IP addresses
• Block cyberattacks
• Create unique IP addresses

What does DNS spoofing refer to?

• A hacker changes DNS info to redirect users to malicious websites
• A system for encrypting communications
• The method by which websites are created
• A type of internet speed enhancement

Why we don't to worry about IP addresses when browsing the web?

• Because people can't remember them
• DNS servers convert domain names to IP addresses
• IP addresses are only used for local connections
• IP addresses are not needed to load websites

What happens when your computer wants to visit a website like www.code.org?

• It directly sends a request to the website's server
• It first looks up the website's domain name using DNS
• It sends an email to the website owner
• It requests the website's content from a local server

Internet Protocol (IP) is a set of rules that govern the transmission of data packets over the Internet.

• True
• False

Users need to know IP addresses to visit websites.

• True
• False

The Domain Name System (DNS) associates domain names with their corresponding IP addresses.

• True
• False

A single DNS server handles all the requests from all devices on the Internet.

• True
• False

Which TLD is most popular?

• .gov
• .net
• .org
• .com