Across
- 2. Server that copies zone data from the primary and does not modify it
- 3. Top-level domain category not tied to country codes
- 4. Temporary storage of DNS results to speed later lookups
- 9. Highest level DNS server that delegates authority to lower domains
- 12. Method where DNS server completes the entire lookup on behalf of client
- 13. Flag indicating DNS answer came from cache and not authoritative data
- 15. Core system that maps human-readable names to machine IP addresses
- 16. Method where DNS server returns referral information to the client
- 17. Section listing servers that are authoritative for the queried domain
- 20. Administrative portion of domain space managed by a DNS server
- 21. Protocol used for DNS messages that exceed 512 bytes
- 25. Client program that sends DNS queries for applications
- 26. Time limit defining how long a cached DNS record remains valid
- 28. System allowing dynamic updates to DNS records without manual edits
Down
- 1. File containing all resource records for a specific DNS zone
- 5. Top-level domain category representing specific nations
- 6. Server that creates, updates, and maintains the zone file
- 7. Field used to match a DNS response with its original query
- 8. Subtree within the hierarchical DNS structure
- 9. Process by which a domain name is translated into an IP address
- 10. Individual entry stored in a DNS zone file
- 11. Global authority responsible for accrediting registrars
- 12. Message returned by DNS server containing requested data
- 14. Component of a domain name, limited to 63 characters
- 18. Domain used to map IP addresses back to hostnames
- 19. Mechanism where the primary actively alerts secondaries about zone changes
- 22. Well-known port number used for DNS communication
- 23. Secondary server periodically checking primary for updates
- 24. Bits that define query type, response type, and error conditions
- 25. Entity that registers domain names into the DNS database
- 27. Protocol used by DNS for small messages under 512 bytes