N340 | N340 Final Exam: Public Health - WCU
Updated and Latest Questions and Correct
Answers with Rationale
1. A public health nurse is planning an immunization clinic for local school children. Which
level of prevention is being implemented?
A. Quaternary prevention
B. Secondary prevention
C. Tertiary prevention
D. Primary prevention
Correct Answer: D
Rationale: Primary prevention aims to prevent disease or injury before it ever occurs by
modifying risks. Immunizations are a classic example of primary prevention because they
provide immunity to infectious agents. Secondary prevention focuses on early detection,
while tertiary prevention manages existing conditions. The nurse focuses on healthy
individuals to keep them from becoming ill. This proactive approach is the foundation of
community health nursing practice.
2. When assessing a community using the epidemiological triangle, which of the following is
considered an environmental factor?
A. The genetic susceptibility of the population
B. The virulence of a circulating virus
C. The presence of contaminated water sources
D. The age and gender of the community members
Correct Answer: C
Rationale: The environment consists of external factors that affect the agent and the host’s
opportunity for exposure. Contaminated water represents a physical environmental factor
that facilitates disease transmission. Genetic susceptibility and age are host factors, while
virulence relates to the agent itself. Understanding these interactions helps nurses design
targeted interventions for community safety. Environmental health is a critical component
of assessing risks within a specific geographic location.
3. A nurse is performing a windshield survey. Which of the following data collection methods
is being used?
A. Participant observation
B. Secondary data analysis
,C. Direct observation
D. Focus group interview
Correct Answer: C
Rationale: A windshield survey involves direct observation of a community’s physical and
social characteristics while driving through it. This method provides an objective view of
the environment, housing quality, and available resources. Unlike secondary data, which
uses existing reports, this is a primary source of data collection. It allows the nurse to
identify visible strengths and weaknesses in the community infrastructure. Direct
observation is essential for a comprehensive community health assessment process.
4. Which core function of public health involves ensuring that essential community-wide
health services are available?
A. Assurance
B. Policy Development
C. Assessment
D. Planning
Correct Answer: A
Rationale: Assurance refers to the responsibility of public health agencies to make sure
that necessary services are provided to the community. This includes monitoring the
quality of care and the competency of the public health workforce. Assessment involves
data collection, while policy development focuses on creating laws and regulations.
Assurance ensures that the goals set in the planning phase are actually met for the public.
Nurses play a key role in assurance by linking people to needed personal health services.
5. A community health nurse identifies an increase in new cases of Pertussis over the last
month. This data represents which of the following?
A. Prevalence
B. Morbidity rate
C. Incidence
D. Endemicity
Correct Answer: C
Rationale: Incidence refers to the number of new cases of a disease within a specific
population during a defined period. It is a measure of the risk of developing a new
condition. Prevalence, by contrast, includes both new and existing cases at a single point in
time. Tracking incidence helps epidemiologists determine if an outbreak is occurring. This
information is vital for evaluating the effectiveness of current prevention and control
measures.
, 6. A nurse is conducting a screening for hypertension at a local senior center. This is an
example of:
A. Primary prevention
B. Health promotion
C. Tertiary prevention
D. Secondary prevention
Correct Answer: D
Rationale: Secondary prevention involves early detection and screening of diseases to
limit their impact and duration. By screening for hypertension, the nurse identifies
individuals who may have the disease but are asymptomatic. This allows for early
intervention and treatment before complications like stroke occur. It differs from primary
prevention because the disease process has likely already started. Screening programs are
essential for improving health outcomes through early medical management.
7. An occupational health nurse is monitoring the noise levels in a factory. This action
addresses which component of the epidemiological triangle?
A. Vector
B. Host
C. Environment
D. Agent
Correct Answer: D
Rationale: In the epidemiological triangle, the agent is the factor that must be present for a
disease or injury to occur. In an industrial setting, physical agents like noise, heat, or
vibration can cause harm to workers. The host is the worker, and the environment is the
physical workspace surrounding them. Monitoring the agent helps in designing
engineering controls to reduce exposure levels. Nurses use this data to advocate for safer
working conditions for all employees.
8. Which of the following is the most important factor to consider when developing a health
education program for a diverse community?
A. The health literacy level of the target population
B. The cost of the materials
C. The availability of digital technology
D. The nurse’s personal health beliefs
Correct Answer: A
Updated and Latest Questions and Correct
Answers with Rationale
1. A public health nurse is planning an immunization clinic for local school children. Which
level of prevention is being implemented?
A. Quaternary prevention
B. Secondary prevention
C. Tertiary prevention
D. Primary prevention
Correct Answer: D
Rationale: Primary prevention aims to prevent disease or injury before it ever occurs by
modifying risks. Immunizations are a classic example of primary prevention because they
provide immunity to infectious agents. Secondary prevention focuses on early detection,
while tertiary prevention manages existing conditions. The nurse focuses on healthy
individuals to keep them from becoming ill. This proactive approach is the foundation of
community health nursing practice.
2. When assessing a community using the epidemiological triangle, which of the following is
considered an environmental factor?
A. The genetic susceptibility of the population
B. The virulence of a circulating virus
C. The presence of contaminated water sources
D. The age and gender of the community members
Correct Answer: C
Rationale: The environment consists of external factors that affect the agent and the host’s
opportunity for exposure. Contaminated water represents a physical environmental factor
that facilitates disease transmission. Genetic susceptibility and age are host factors, while
virulence relates to the agent itself. Understanding these interactions helps nurses design
targeted interventions for community safety. Environmental health is a critical component
of assessing risks within a specific geographic location.
3. A nurse is performing a windshield survey. Which of the following data collection methods
is being used?
A. Participant observation
B. Secondary data analysis
,C. Direct observation
D. Focus group interview
Correct Answer: C
Rationale: A windshield survey involves direct observation of a community’s physical and
social characteristics while driving through it. This method provides an objective view of
the environment, housing quality, and available resources. Unlike secondary data, which
uses existing reports, this is a primary source of data collection. It allows the nurse to
identify visible strengths and weaknesses in the community infrastructure. Direct
observation is essential for a comprehensive community health assessment process.
4. Which core function of public health involves ensuring that essential community-wide
health services are available?
A. Assurance
B. Policy Development
C. Assessment
D. Planning
Correct Answer: A
Rationale: Assurance refers to the responsibility of public health agencies to make sure
that necessary services are provided to the community. This includes monitoring the
quality of care and the competency of the public health workforce. Assessment involves
data collection, while policy development focuses on creating laws and regulations.
Assurance ensures that the goals set in the planning phase are actually met for the public.
Nurses play a key role in assurance by linking people to needed personal health services.
5. A community health nurse identifies an increase in new cases of Pertussis over the last
month. This data represents which of the following?
A. Prevalence
B. Morbidity rate
C. Incidence
D. Endemicity
Correct Answer: C
Rationale: Incidence refers to the number of new cases of a disease within a specific
population during a defined period. It is a measure of the risk of developing a new
condition. Prevalence, by contrast, includes both new and existing cases at a single point in
time. Tracking incidence helps epidemiologists determine if an outbreak is occurring. This
information is vital for evaluating the effectiveness of current prevention and control
measures.
, 6. A nurse is conducting a screening for hypertension at a local senior center. This is an
example of:
A. Primary prevention
B. Health promotion
C. Tertiary prevention
D. Secondary prevention
Correct Answer: D
Rationale: Secondary prevention involves early detection and screening of diseases to
limit their impact and duration. By screening for hypertension, the nurse identifies
individuals who may have the disease but are asymptomatic. This allows for early
intervention and treatment before complications like stroke occur. It differs from primary
prevention because the disease process has likely already started. Screening programs are
essential for improving health outcomes through early medical management.
7. An occupational health nurse is monitoring the noise levels in a factory. This action
addresses which component of the epidemiological triangle?
A. Vector
B. Host
C. Environment
D. Agent
Correct Answer: D
Rationale: In the epidemiological triangle, the agent is the factor that must be present for a
disease or injury to occur. In an industrial setting, physical agents like noise, heat, or
vibration can cause harm to workers. The host is the worker, and the environment is the
physical workspace surrounding them. Monitoring the agent helps in designing
engineering controls to reduce exposure levels. Nurses use this data to advocate for safer
working conditions for all employees.
8. Which of the following is the most important factor to consider when developing a health
education program for a diverse community?
A. The health literacy level of the target population
B. The cost of the materials
C. The availability of digital technology
D. The nurse’s personal health beliefs
Correct Answer: A
