This read-only object reports the category of this buffered trap, classifying the type of event according to the TnTrapCategory enumeration. Admins use it to filter or triage buffered traps by category, useful for quickly separating, say, equipment alarms from performance-threshold crossings when reviewing a large trap buffer. Filtering the trap buffer by tnTrapCategory would let the admin quickly find all equipment-related alarms without scanning through unrelated notification types.