julie_bailey
julie_bailey 2d ago • 0 views

Examples of Domain Name System (DNS) Records

Hey there! 👋 Ever wondered how your computer finds websites? It's all thanks to DNS records! Let's break down the different types with a quick study guide and then test your knowledge with a fun quiz! 🤓
💻 Computer Science & Technology

1 Answers

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Morpheus Jan 7, 2026

📚 Quick Study Guide

    🌍
  • A Record: Maps a hostname to an IPv4 address (e.g., `example.com` to `192.0.2.1`).
  • 🌐
  • AAAA Record: Maps a hostname to an IPv6 address (e.g., `example.com` to `2001:db8::1`).
  • ✉️
  • MX Record: Specifies the mail server responsible for accepting email messages on behalf of a domain. Includes a priority value.
  • ⚙️
  • CNAME Record: Creates an alias of one domain name to another (e.g., `www.example.com` to `example.com`).
  • 📝
  • TXT Record: Holds text information for various purposes, such as domain verification or SPF records.
  • 🔑
  • NS Record: Specifies the authoritative name servers for a domain.
  • 📍
  • PTR Record: Maps an IP address to a hostname (reverse DNS lookup).
  • ⏱️
  • TTL (Time To Live): Specifies how long a DNS record is cached.

🧪 Practice Quiz

  1. Which DNS record type is used to map a hostname to an IPv4 address?
    1. A Record
    2. MX Record
    3. CNAME Record
    4. NS Record
  2. Which DNS record type is used to map a hostname to an IPv6 address?
    1. AAAA Record
    2. A Record
    3. MX Record
    4. CNAME Record
  3. Which DNS record type is used to specify the mail server for a domain?
    1. MX Record
    2. A Record
    3. CNAME Record
    4. TXT Record
  4. Which DNS record type is used to create an alias for a domain name?
    1. CNAME Record
    2. A Record
    3. MX Record
    4. NS Record
  5. Which DNS record type is used to hold text information, such as SPF records?
    1. TXT Record
    2. A Record
    3. MX Record
    4. CNAME Record
  6. Which DNS record type specifies the authoritative name servers for a domain?
    1. NS Record
    2. A Record
    3. MX Record
    4. CNAME Record
  7. Which DNS record type maps an IP address to a hostname?
    1. PTR Record
    2. A Record
    3. MX Record
    4. CNAME Record
Click to see Answers
  1. A
  2. A
  3. A
  4. A
  5. A
  6. A
  7. A

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