AWS - Route 53
Why does Route 53 recommend using alias records instead of CNAME records when pointing a root domain (example.com) to an ELB?
Why does Route 53 recommend using alias records instead of CNAME records when pointing a root domain (example.com) to an ELB?
hard📝 Conceptual Q10 of 15
Step-by-Step Solution
Solution:
Step 1: Understand DNS standards for root domains
Root domains cannot have CNAME records due to DNS rules.Step 2: Alias record advantage
Alias records act like A records but point to AWS resources, allowing root domain use.Final Answer:
Because alias records allow pointing root domains without violating DNS standards -> Option BQuick Check:
Alias records enable root domain pointing = Because alias records allow pointing root domains without violating DNS standards [OK]
Quick Trick: Root domains cannot use CNAME; alias records solve this [OK]
Common Mistakes:
- Thinking CNAME is allowed on root domains
- Confusing speed differences between record types
- Believing alias records need manual IP updates
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