D450 Community Health Nursing OA Practice Exam 2026 UPDATE
1. A community health nurse is conducting a vision screening for kindergarten students.
Which level of prevention is being implemented?
A. Primary prevention
B. Quaternary prevention
C. Tertiary prevention
D. Secondary prevention
Answer: D
Rationale: Secondary prevention involves early detection and screening to identify
conditions in their early stages.
2. Which of the following describes the ‘incidence rate’ in epidemiology?
A. The total number of existing cases in a population at a specific time.
B. The proportion of the population that is immune to a specific disease.
C. The percentage of deaths resulting from a specific disease.
D. The number of new cases of a disease in a population over a specific period.
Answer: D
Rationale: Incidence refers to new cases, whereas prevalence refers to all existing cases
(new and old).
,3. A nurse is performing a windshield survey. Which of the following data collection methods
is the nurse using?
A. Secondary data analysis
B. Direct observation
C. Informant interviews
D. Focus groups
Answer: B
Rationale: A windshield survey is a form of direct observation where the nurse drives or
walks through a community to observe its characteristics.
4. In the epidemiological triangle, a mosquito that transmits malaria is considered the:
A. Agent
B. Vector
C. Environment
D. Host
Answer: B
Rationale: A vector is an organism (like a mosquito or tick) that transmits an infectious
agent from one host to another.
, 5. A nurse is teaching a group of older adults about the importance of getting an annual
influenza vaccine. This is an example of:
A. Primary prevention
B. Secondary prevention
C. Tertiary prevention
D. Health restoration
Answer: A
Rationale: Immunizations are a primary prevention strategy because they aim to prevent
the occurrence of a disease before it happens.
6. Which phase of disaster management involves activities such as building retaining walls to
prevent flooding?
A. Preparedness
B. Response
C. Recovery
D. Mitigation
Answer: D
Rationale: Mitigation involves actions taken to prevent or reduce the cause, impact, and
consequences of disasters.
1. A community health nurse is conducting a vision screening for kindergarten students.
Which level of prevention is being implemented?
A. Primary prevention
B. Quaternary prevention
C. Tertiary prevention
D. Secondary prevention
Answer: D
Rationale: Secondary prevention involves early detection and screening to identify
conditions in their early stages.
2. Which of the following describes the ‘incidence rate’ in epidemiology?
A. The total number of existing cases in a population at a specific time.
B. The proportion of the population that is immune to a specific disease.
C. The percentage of deaths resulting from a specific disease.
D. The number of new cases of a disease in a population over a specific period.
Answer: D
Rationale: Incidence refers to new cases, whereas prevalence refers to all existing cases
(new and old).
,3. A nurse is performing a windshield survey. Which of the following data collection methods
is the nurse using?
A. Secondary data analysis
B. Direct observation
C. Informant interviews
D. Focus groups
Answer: B
Rationale: A windshield survey is a form of direct observation where the nurse drives or
walks through a community to observe its characteristics.
4. In the epidemiological triangle, a mosquito that transmits malaria is considered the:
A. Agent
B. Vector
C. Environment
D. Host
Answer: B
Rationale: A vector is an organism (like a mosquito or tick) that transmits an infectious
agent from one host to another.
, 5. A nurse is teaching a group of older adults about the importance of getting an annual
influenza vaccine. This is an example of:
A. Primary prevention
B. Secondary prevention
C. Tertiary prevention
D. Health restoration
Answer: A
Rationale: Immunizations are a primary prevention strategy because they aim to prevent
the occurrence of a disease before it happens.
6. Which phase of disaster management involves activities such as building retaining walls to
prevent flooding?
A. Preparedness
B. Response
C. Recovery
D. Mitigation
Answer: D
Rationale: Mitigation involves actions taken to prevent or reduce the cause, impact, and
consequences of disasters.
