Answer:
Network Security Management
Step-by-step explanation:
The key topic that was not included is Network Security Management because network security management are rules and procedures that a network administrators follows to ensure that unauthorized users don't have access thereby making the network secure and also to protect the usability and integrity of the Security Information.
While Operations security described
the operational management of controls to ensure that capacity is adequate and performance is delivered in order
to determines if information obtained could be interpreted to be useful to them, thereby executing selected measures that eliminate them.