Record, RRset e TTL

Records, RRsets, and TTLs

A resource record has an owner name, TTL, class, type, and data. The TTL is the number of seconds a resolver may keep the answer in cache, subject to resolver policy.

One record, its fields

www.example.test. 300 IN A 192.0.2.10

The owner is www.example.test., 300 is the TTL, IN is the Internet class, A is the type, and 192.0.2.10 is the data. Another A record for the same owner belongs to the same RRset. Resolvers generally treat an RRset as a unit, so do not design its members as if they had unrelated caching policies.

Use documentation names and addresses such as training.test. and 192.0.2.10. Write the complete record and identify its owner, type, TTL, and data.

Check your understanding

Choose the best answer. This quiz runs locally and sends no DNS queries to real domains.