The answer is IPS (Intrusion Prevention Systems)
The Intrusion Prevention Systems and Intrusion Detection Systems (IDS) are two security technologies that secure networks and are very similar in how they work. The IDS detects unauthorized user activities, attacks, and network compromises, and also alerts. The IPS, on the other hand, as mentioned, is very similar to the IDS, except that in addition to detecting and alerting, it can also takes action to prevent breaches.
The numbers are sorted by tens
B: feasibility study
They are analyzing whether the project or application makes sense or is feasible, given the available resources, budget and projected monetary gains.
