NIMS ICS 400 REVIEW: 100
PRACTICE
QUESTIONS|GUARANTEED
PASS |ALREADY GRADED A+
Question 1
A catastrophic tornado has struck a region with multiple impacted
towns across three counties. Three separate Type 2 Incident
Management Teams have been deployed. A fourth incident involving a
hazardous materials release from a damaged industrial site has also
occurred nearby. What command structure is MOST appropriate?
A. Unified Command with all three IMTs sharing authority
B. Area Command to coordinate resource allocation and strategic
guidance across all four incidents
C. A single expanded ICS with four Operations Section Branches
D. Delegation of all command authority to the local EOC
,Correct Answer: B
Rationale: Area Command is established when multiple incidents occur
in the same geographic area requiring coordinated resource
prioritization and strategic oversight. Area Command does not manage
tactical operations but supports the IMTs by resolving resource conflicts
and providing strategic direction .
---
Question 2
During a complex incident, the Safety Officer observes multiple
firefighters operating without proper structural PPE. What authority
does the Safety Officer have?
A. Recommend corrective actions to the Liaison Officer
B. Order the immediate cessation of unsafe operations
C. Issue a written reprimand to the firefighters
D. Request mutual aid replacement crews
Correct Answer: B
Rationale: The Safety Officer has direct authority to stop or prevent
unsafe acts and has immediate access to the Incident Commander. This
,authority is specified in NIMS and cannot be overridden by other
Command Staff without IC approval .
---
Question 3
Which of the following BEST describes when Unified Command should
be established?
A. When a single incident commander becomes overwhelmed by
incident complexity
B. When multiple agencies or jurisdictions share responsibility for an
incident and must jointly determine objectives
C. When an Area Commander needs to coordinate multiple separate
incidents
D. When an EOC assumes operational control of field resources
Correct Answer: B
Rationale: Unified Command is established when multiple agencies or
jurisdictions have responsibility for a single incident. It allows agencies
with different legal, geographic, and functional authorities to jointly set
objectives and develop a single Incident Action Plan .
, ---
Question 4
An incident has expanded to the point where the Operations Section
Chief now supervises 12 Division Supervisors and 8 Group Supervisors.
Which ICS principle is being violated?
A. Modular Organization
B. Unified Command
C. Span of Control
D. Manageable Span of Control
Correct Answer: C
Rationale: NIMS specifies that span of control should be maintained
between three and seven subordinates, with five being optimal. When
the Operations Section Chief supervises 20 subordinates, span of
control is exceeded and the organization must be restructured using
Branches .
---
PRACTICE
QUESTIONS|GUARANTEED
PASS |ALREADY GRADED A+
Question 1
A catastrophic tornado has struck a region with multiple impacted
towns across three counties. Three separate Type 2 Incident
Management Teams have been deployed. A fourth incident involving a
hazardous materials release from a damaged industrial site has also
occurred nearby. What command structure is MOST appropriate?
A. Unified Command with all three IMTs sharing authority
B. Area Command to coordinate resource allocation and strategic
guidance across all four incidents
C. A single expanded ICS with four Operations Section Branches
D. Delegation of all command authority to the local EOC
,Correct Answer: B
Rationale: Area Command is established when multiple incidents occur
in the same geographic area requiring coordinated resource
prioritization and strategic oversight. Area Command does not manage
tactical operations but supports the IMTs by resolving resource conflicts
and providing strategic direction .
---
Question 2
During a complex incident, the Safety Officer observes multiple
firefighters operating without proper structural PPE. What authority
does the Safety Officer have?
A. Recommend corrective actions to the Liaison Officer
B. Order the immediate cessation of unsafe operations
C. Issue a written reprimand to the firefighters
D. Request mutual aid replacement crews
Correct Answer: B
Rationale: The Safety Officer has direct authority to stop or prevent
unsafe acts and has immediate access to the Incident Commander. This
,authority is specified in NIMS and cannot be overridden by other
Command Staff without IC approval .
---
Question 3
Which of the following BEST describes when Unified Command should
be established?
A. When a single incident commander becomes overwhelmed by
incident complexity
B. When multiple agencies or jurisdictions share responsibility for an
incident and must jointly determine objectives
C. When an Area Commander needs to coordinate multiple separate
incidents
D. When an EOC assumes operational control of field resources
Correct Answer: B
Rationale: Unified Command is established when multiple agencies or
jurisdictions have responsibility for a single incident. It allows agencies
with different legal, geographic, and functional authorities to jointly set
objectives and develop a single Incident Action Plan .
, ---
Question 4
An incident has expanded to the point where the Operations Section
Chief now supervises 12 Division Supervisors and 8 Group Supervisors.
Which ICS principle is being violated?
A. Modular Organization
B. Unified Command
C. Span of Control
D. Manageable Span of Control
Correct Answer: C
Rationale: NIMS specifies that span of control should be maintained
between three and seven subordinates, with five being optimal. When
the Operations Section Chief supervises 20 subordinates, span of
control is exceeded and the organization must be restructured using
Branches .
---
