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These series of articles will help you on the task of installing and configuring DNS BIND on a Linux CentOS 7 Virtual Machine running on Oracle VirtualBox to be used as the DNS server on a Cisco Collaboration LAB.

Optional

The following two articles are optionals, whether you use them or not depends entirely on the way your LAB has been built (using DHCP or Static IP), if you are interested on learn a little bit more about this matter I do recommend you to take a look at them.