6.5.5 - Host Address and Canonical Name Records

Flashcards covering host address records, canonical name records, and dynamic DNS.

A Record

Resolves a host name to an IPv4 address.

AAAA Record

Resolves a host name to an IPv6 address.

AAAA records exceeding the UDP packet size limit

Can result in UDP packets being fragmented into several smaller packets, potentially blocked by firewalls.

CNAME (Canonical Name) Record

Configures an alias for an existing address record (A or AAAA).

Port 53

What is the default port used by DNS?

Round Robin DNS

A basic load balancing technique using multiple A or AAAA records with the same host name but different IP addresses.

Dynamic DNS (DDNS)

Allows a client or DHCP server to configure records automatically.

ipconfig /registerdns

What command in Windows causes a client to attempt to use DDNS?

What is usually considered better practice than configuring multiple address records to point different host names to the same IP address?

Using CNAME records