All of the following are true about key components of the incidence-response plan except for which one?

The statement indicating that testing the plan is optional is incorrect because effective incident-response plans require regular testing to ensure their viability and effectiveness. Consistent testing helps organizations assess how well the plan performs in practice, identify weaknesses, and make necessary adjustments based on the outcomes of these simulations.

In contrast, regular updates to the plan are vital to reflect changes in organizational processes, technology, and the threat landscape. Employee training is also essential, as it ensures that all relevant personnel understand their roles and responsibilities in an incident response scenario. Furthermore, coordination with external stakeholders, such as law enforcement, regulatory bodies, and partners, is critical to ensure a holistic response and compliance with legal obligations. This interconnectedness reinforces the necessity of a comprehensive and regularly tested incident-response plan.