Comprehensive and Detailed Explanation From Exact Extract:

Internal exercises, such as simulations, tabletop exercises, and mock drills, are designed primarily to assess the readiness, coordination, and performance of the internal incident response team (IRT). According to ISO/IEC 27035-2:2016, these exercises aim to validate that the IRT understands their roles, follows documented procedures, and can act effectively under pressure.

While external collaboration (Options A and B) may be tested during joint exercises or industry-wide scenarios, the focus of internal exercises is on internal capabilities. These exercises help identify gaps in training, procedures, communication, and escalation pathways.

Reference Extracts:

ISO/IEC 27035-2:2016, Clause 7.3.3: “Exercises and simulations should be conducted to test the readiness of the incident response capability.”

NIST SP 800-84: “Regular exercises increase response efficiency and allow staff to develop incident handling confidence.”

Correct answer: C

—