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NIMS ICS 400 Reviewed Exam
Advanced Incident Command System
Official Practice Exam -- 2026/2027 Edition
75 90 75% Multiple Choice
Questions Minutes Passing Score Format
TABLE OF CONTENTS
Section 1: Fundamentals of Advanced ICS .................. Questions 1-15
Section 2: Unified Command .............................. Questions 16-30
Section 3: Area Command & Multi-Agency Coordination ..... Questions 31-45
Section 4: Incident Management & Delegation of Authority . Questions 46-60
Section 5: ICS for Expanding Incidents & Demobilization .. Questions 61-75
EXAM INSTRUCTIONS
This practice exam contains 75 multiple-choice questions divided into five sections covering advanced Incident
Command System concepts consistent with the NIMS ICS 400 curriculum. You have 90 minutes to complete the
entire exam. A passing score of 75% (56 correct out of 75) is required. Each question has four answer choices (A
through D); select the single best answer. No points are deducted for incorrect responses, so it is advantageous
to answer every question. Read each scenario carefully before selecting your response. Review the rationale
provided after each answer to reinforce your understanding of advanced ICS principles and their application.
TIPS FOR SUCCESS
1. Read the entire scenario and all four options before selecting an answer.
2. Focus on ICS principles, command structure, and NIMS compliance in each scenario.
3. Understand the distinction between Unified Command and Area Command structures.
4. The rationale after each question explains why the correct answer is right and why a
top distractor is wrong -- use these to deepen your understanding.
5. Time management: aim to spend no more than 72 seconds per question on average.
NIMS ICS 400 -- 2026/2027 | Passing Score: 75% | Page 1
,Section 1: Fundamentals of Advanced ICS | 2026/2027
Q1 Question 1 of 75
A county emergency manager is assessing a developing wildfire that has crossed into two
jurisdictions and threatens a major highway interchange. The incident has exceeded the
management capability of the initial Incident Commander. According to NIMS principles,
the process of moving from one Incident Commander to another is formally called what?
A. A transfer of command that must include a briefing and acknowledgment of the new
IC's authority
B. A relief of duty that allows the outgoing IC to return to their home agency without further
obligation
C. A shift change that follows the same procedures as a routine personnel rotation at a fixed
facility
D. A delegation of authority that transfers legal liability from the outgoing IC to the incoming IC
Correct Answer: A
Rationale:
Transfer of command is the NIMS process for moving responsibility from one IC to another and must include a
thorough briefing and formal acknowledgment. Relief of duty is not a recognized NIMS term. A shift change
implies routine rotation rather than a formal command transfer. Delegation of authority refers to the initial
authorization given by the agency executive, not the transfer between ICs.
NIMS ICS 400 -- 2026/2027 | Passing Score: 75% | Page 2
,Q2 Question 2 of 75
An Incident Commander is managing a flood response and realizes the span of control for
Operations has been exceeded, with seven divisions reporting directly to the Operations
Section Chief. According to ICS principles, what is the recommended span of control and
what should be done?
A. The recommended span of control is 1:10, so the current structure is within acceptable
limits and no change is needed
B. The recommended span of control is 1:3 to 1:7, so the IC should add branches or
groups under Operations to restore effective supervision
C. The recommended span of control is 1:1, so all divisions must report directly to the Incident
Commander
D. The recommended span of control is 1:15, so the current structure has capacity for
additional divisions
Correct Answer: B
Rationale:
ICS recommends a span of control of 1:3 to 1:7, meaning one supervisor should manage between three and
seven subordinates. With seven divisions, the Operations Section Chief is at the upper limit, and adding
branches would improve supervision. A 1:10 ratio exceeds ICS recommendations. A 1:1 ratio is impractical
and would overburden the IC. A 1:15 ratio is far beyond the recommended span of control.
NIMS ICS 400 -- 2026/2027 | Passing Score: 75% | Page 3
, Q3 Question 3 of 75
During a complex hazmat incident, the Incident Commander needs to expand the
organization but is unsure which positions to activate first. According to ICS principles,
what determines which ICS elements are activated?
A. All ICS positions must be activated whenever the incident reaches a Type 3 classification
B. Only the General Staff positions (Operations, Planning, Logistics, Finance/Admin) may be
activated; Command Staff is optional
C. ICS elements are activated based on the nature and complexity of the incident and
only those positions that are needed
D. The agency executive dictates which ICS positions are activated at the start of every
incident
Correct Answer: C
Rationale:
ICS is designed to be scalable, and only those positions needed for the current incident are activated based
on the nature and complexity of the situation. Not all positions must be activated at any classification level.
Command Staff positions are activated as needed alongside General Staff. The agency executive provides
delegation of authority but does not micromanage ICS organizational structure.
NIMS ICS 400 -- 2026/2027 | Passing Score: 75% | Page 4
NIMS ICS 400 Reviewed Exam
Advanced Incident Command System
Official Practice Exam -- 2026/2027 Edition
75 90 75% Multiple Choice
Questions Minutes Passing Score Format
TABLE OF CONTENTS
Section 1: Fundamentals of Advanced ICS .................. Questions 1-15
Section 2: Unified Command .............................. Questions 16-30
Section 3: Area Command & Multi-Agency Coordination ..... Questions 31-45
Section 4: Incident Management & Delegation of Authority . Questions 46-60
Section 5: ICS for Expanding Incidents & Demobilization .. Questions 61-75
EXAM INSTRUCTIONS
This practice exam contains 75 multiple-choice questions divided into five sections covering advanced Incident
Command System concepts consistent with the NIMS ICS 400 curriculum. You have 90 minutes to complete the
entire exam. A passing score of 75% (56 correct out of 75) is required. Each question has four answer choices (A
through D); select the single best answer. No points are deducted for incorrect responses, so it is advantageous
to answer every question. Read each scenario carefully before selecting your response. Review the rationale
provided after each answer to reinforce your understanding of advanced ICS principles and their application.
TIPS FOR SUCCESS
1. Read the entire scenario and all four options before selecting an answer.
2. Focus on ICS principles, command structure, and NIMS compliance in each scenario.
3. Understand the distinction between Unified Command and Area Command structures.
4. The rationale after each question explains why the correct answer is right and why a
top distractor is wrong -- use these to deepen your understanding.
5. Time management: aim to spend no more than 72 seconds per question on average.
NIMS ICS 400 -- 2026/2027 | Passing Score: 75% | Page 1
,Section 1: Fundamentals of Advanced ICS | 2026/2027
Q1 Question 1 of 75
A county emergency manager is assessing a developing wildfire that has crossed into two
jurisdictions and threatens a major highway interchange. The incident has exceeded the
management capability of the initial Incident Commander. According to NIMS principles,
the process of moving from one Incident Commander to another is formally called what?
A. A transfer of command that must include a briefing and acknowledgment of the new
IC's authority
B. A relief of duty that allows the outgoing IC to return to their home agency without further
obligation
C. A shift change that follows the same procedures as a routine personnel rotation at a fixed
facility
D. A delegation of authority that transfers legal liability from the outgoing IC to the incoming IC
Correct Answer: A
Rationale:
Transfer of command is the NIMS process for moving responsibility from one IC to another and must include a
thorough briefing and formal acknowledgment. Relief of duty is not a recognized NIMS term. A shift change
implies routine rotation rather than a formal command transfer. Delegation of authority refers to the initial
authorization given by the agency executive, not the transfer between ICs.
NIMS ICS 400 -- 2026/2027 | Passing Score: 75% | Page 2
,Q2 Question 2 of 75
An Incident Commander is managing a flood response and realizes the span of control for
Operations has been exceeded, with seven divisions reporting directly to the Operations
Section Chief. According to ICS principles, what is the recommended span of control and
what should be done?
A. The recommended span of control is 1:10, so the current structure is within acceptable
limits and no change is needed
B. The recommended span of control is 1:3 to 1:7, so the IC should add branches or
groups under Operations to restore effective supervision
C. The recommended span of control is 1:1, so all divisions must report directly to the Incident
Commander
D. The recommended span of control is 1:15, so the current structure has capacity for
additional divisions
Correct Answer: B
Rationale:
ICS recommends a span of control of 1:3 to 1:7, meaning one supervisor should manage between three and
seven subordinates. With seven divisions, the Operations Section Chief is at the upper limit, and adding
branches would improve supervision. A 1:10 ratio exceeds ICS recommendations. A 1:1 ratio is impractical
and would overburden the IC. A 1:15 ratio is far beyond the recommended span of control.
NIMS ICS 400 -- 2026/2027 | Passing Score: 75% | Page 3
, Q3 Question 3 of 75
During a complex hazmat incident, the Incident Commander needs to expand the
organization but is unsure which positions to activate first. According to ICS principles,
what determines which ICS elements are activated?
A. All ICS positions must be activated whenever the incident reaches a Type 3 classification
B. Only the General Staff positions (Operations, Planning, Logistics, Finance/Admin) may be
activated; Command Staff is optional
C. ICS elements are activated based on the nature and complexity of the incident and
only those positions that are needed
D. The agency executive dictates which ICS positions are activated at the start of every
incident
Correct Answer: C
Rationale:
ICS is designed to be scalable, and only those positions needed for the current incident are activated based
on the nature and complexity of the situation. Not all positions must be activated at any classification level.
Command Staff positions are activated as needed alongside General Staff. The agency executive provides
delegation of authority but does not micromanage ICS organizational structure.
NIMS ICS 400 -- 2026/2027 | Passing Score: 75% | Page 4
