The security team for Company XYZ has determined that someone from outside the organization has obtained sensitive information about the internal organization by querying the external DNS server of the company. The security manager is tasked with making sure this problem does not occur in the future.
How would the security manager address this problem?
A . Implement a split DNS, only allowing the external DNS server to contain information about domains that only the outside world should be aware, and an internal DNS server to maintain authoritative records for internal systems.
B . Implement a split DNS, only allowing the external DNS server to contain information about internal domain resources that the outside world would be interested in, and an internal DNS server to maintain authoritative records for internal systems.
C . Implement a split DNS, only allowing the external DNS server to contain information about domains that only the outside world should be aware, and an internal DNS server to maintain non-authoritative records for external systems.
D . Implement a split DNS, only allowing the internal DNS server to contain information about domains the outside world should be aware of, and an external DNS server to maintain authoritative records for internal systems.
Answer: A
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