Answer:
Correct answer of the following question is dropping packets.
Step-by-step explanation:
Dropping of the packets is wastes the network resources that used for the carrying the packet from source to router for experiencing the congestion.
The purpose of the intrusions detection is to single misbehaving nodes, they deny them the network resources. Node may be the maliciously dropping packets or may be have the genuine problem which prevents them from the forwarding packets.