Understanding DNS: The Domain Name System on the Internet
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Understanding DNS: The Domain Name System on the Internet

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Questions and Answers

What is the function of DNS?

  • Encrypt Internet traffic
  • Translate domain names to IP addresses (correct)
  • Block certain websites
  • Organize web content

    • Why is DNS referred to as the 'phonebook of the Internet'?

  • Because it stores contact information for people online
  • Because it converts domain names to IP addresses (correct)
  • Because it retains a record of all phone numbers associated with websites
  • Because it allows people to make calls over the Internet

    • What is the main purpose of DNS servers?

  • To store website content
  • To increase Internet speed
  • To track users' browsing history
  • To eliminate the need for humans to memorize IP addresses (correct)

    • How does DNS resolution work?

    <p>By translating domain names to computer-friendly IP addresses</p> Signup and view all the answers

    Why do users not need to interact during the DNS lookup process?

    <p>Because the process is automatic and does not require user input</p> Signup and view all the answers

    What happens during a DNS query?

    <p>Conversion of hostnames into machine-friendly IP addresses</p> Signup and view all the answers

    What is the DNS recursor responsible for in the context of loading a webpage?

    <p>Receiving queries from client machines and making additional requests</p> Signup and view all the answers

    How is the root nameserver described in the text?

    <p>The first step in resolving human readable host names into IP addresses</p> Signup and view all the answers

    What does a TLD nameserver represent in the DNS infrastructure?

    <p>Hosts the last portion of a hostname</p> Signup and view all the answers

    How does a recursive DNS resolver differ from an authoritative DNS server?

    <p>The recursive resolver is at the beginning of a DNS query, while the authoritative server is at the end</p> Signup and view all the answers

    What role does caching play in the functioning of recursive DNS resolvers?

    <p>It helps short-circuit necessary requests by serving requested records earlier in the DNS lookup</p> Signup and view all the answers

    In the context of loading a webpage, what is the role of an authoritative DNS server?

    <p>Responds to recursive requests from clients and takes time to track down DNS records</p> Signup and view all the answers

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