CompTIA CASP+ Test 2026 – 400 Free Practice Questions to Pass the Exam

The correct choice is contacting the internet service provider (ISP) when suspecting an internal Denial of Service (DoS) attack. The reason for this is that ISPs typically have tools and resources to monitor and manage network traffic. If an internal DoS attack is suspected, there may also be an associated issue with network performance that the ISP can help analyze. They can assist in identifying the source of the attack or help mitigate its effects by controlling or rerouting traffic.

While other organizations such as law enforcement may handle external cyber crimes, they usually get involved in severe cases of criminal activity rather than internal network performance issues. Sharing information with other organizations is valuable but doesn’t directly address the immediate concern of managing or mitigating an active internal attack. Coordinating with human resources may help in identifying potential insiders involved in the attack, but they would not have the immediate tools or oversight to effectively manage the actual technical aspects of the intrusion. Thus, the role of the ISP is vital in troubleshooting and addressing the network instability that a DoS attack might cause.