DNS

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  1. 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
  2. When does DNS user tcp over udp
    • 1. Anything that is over 512b
    • 2. Zone Transfers
  3. DNS Forwarder
    A DNS server that instead of doing a recursive query, it forwards the info to another DNS server
  4. 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
  5. 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
  6. Glue Record
    Points from the registrars root to the Name server for the domain
Author
ID
287803
Card Set
DNS
Description
tnt dns
Updated
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