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How to Set Up a Caching DNS Server on CENTOS/RHEL 7.6

This article will help you learn how to set up / configure a caching-only DNS server with BIND in RHEL/CENTOS 7.6. We are aware that DNS is a service used to resolve the name to IP address and IP address to name. There are different types of DNS servers (Master, Slave, Caching, & Forwarding).