DNS delegation
FQDN: fully qualified domain name
PTR: reverse pointer recording
DNS delegation: a DNS server delegates resolution of certain zones to other DNS servers
Case 1:
Delegate the bj.uec.com area to server02: create subdomain resolution of bj.uec.com > right-click uec.com > New domain > bj > New A record.
Ping www.bj.uec.com after creating a new A record
Case 2:
Delegate the bj.uec.om on server 01 to server02 resolution: right-click uec.com to create a delegate, delegate the domain to bj, and then add the server02.b.uec.com ip address to the host ip address
Create a bj.uec.com on server02
Test the three hosts of www.ftp web respectively
