DNS

Home > Preview

The flashcards below were created by user tntflashcards on FreezingBlue Flashcards.

Name the 4 minimum DNS servers that will be involved in a resolution process?
- 1. Resolving name server
- 2. root name servers
- 3. Top Level domain servers
- 4. authoritative name servers
When does DNS user tcp over udp
- 1. Anything that is over 512b
- 2. Zone Transfers
DNS Forwarder

A DNS server that instead of doing a recursive query, it forwards the info to another DNS server
3 DNS Zones
- 1. Primary Zone- Full writable master copy of a DNS zone that contains all records, can be updated by admins for distribution to other servers
- 2. Secondary Zone- Read-only complete copy of primary zone. updated by primary zone copy
- 3. Stub Zone- A small read-only foot print of the primary zone, contains only "A-record" "NS Record" and "SOA Record". Updates from primary zone
Domain records.
- A - Ip Addresses
- AAAA - IPv6 Addresses
- MX - email servers
- C-name - alias
- D-name - true domain
- SOA - zone serial # , admins email
- TXT - Universal
- NS - Name Server
- SRV - Providing Hosts
- SPF - List of known message transfer agents
Glue Record

Points from the registrars root to the Name server for the domain