If a DNS record has a TTL (Time To Live) of 300 seconds, what does this mean?

medium📝 Predict Output Q5 of 15

AWS - Route 53

ADNS updates the record every 300 minutes

BDNS caches the record for 300 seconds before refreshing

CDNS deletes the record after 300 seconds

DDNS ignores the record for 300 seconds

Step-by-Step Solution

Solution:

Step 1: Understand TTL meaning
TTL defines how long DNS resolvers cache a record before asking again.
Step 2: Interpret 300 seconds
300 seconds means caching lasts 5 minutes before refresh.
Final Answer:
DNS caches the record for 300 seconds before refreshing -> Option B
Quick Check:
TTL = cache duration [OK]

Quick Trick: TTL controls DNS cache time [OK]

Common Mistakes:

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