a-IPC Practice Exam | Associate – Infection Prevention and
Control Complete Questions & Detailed Explanations and
solutions 2026/2027
Question 1
In the epidemiological triangle, which component refers to the external
agent, host, or environmental factors that cause or contribute to
disease?
A. The chain of transmission
B. The triad of causation
C. The host immunity barrier
D. The clinical incubation index
Correct Answer: B. The triad of causation
Detailed Rationale: The epidemiological triad consists of the agent,
host, and environment, which interact to determine whether disease
occurs within a population.
Question 2
What is the primary reason why alcohol-based hand rub (ABHR) is
preferred over soap and water for routine hand hygiene in healthcare
settings?
A. It completely destroys bacterial spores such as Clostridioides difficile.
B. It has superior microbicidal activity, requires less time, and causes
less skin irritation.
,C. It leaves a chemical residue that remains active on skin for 24 hours.
D. It removes heavy organic soil and blood better than water.
Correct Answer: B. It has superior microbicidal activity, requires less
time, and causes less skin irritation.
Detailed Rationale: Alcohol-based hand rubs are highly effective against
most vegetative bacteria, fungi, and enveloped viruses while being
faster and gentler on skin than repeated soap and water washing. They
do not, however, kill spores.
Question 3
Which term defines the presence and multiplication of microorganisms
on or in a host without causing clinical signs of disease or tissue
invasion?
A. Infection
B. Colonization
C. Pathogenicity
D. Virulence
Correct Answer: B. Colonization
Detailed Rationale: Colonization means microorganisms are present
and replicating on body surfaces without triggering an immune
response or clinical pathology, whereas infection involves tissue
invasion and damage.
Question 4
,According to standard precautions, what is the minimum required
personal protective equipment (PPE) when there is a potential for
exposure to splashes or sprays of blood or body fluids?
A. Sterile gown and shoe covers only
B. Gloves, mask, eye protection (goggles or face shield), and a gown
C. N95 respirator alone
D. No PPE is required if gloves are worn
Correct Answer: B. Gloves, mask, eye protection (goggles or face
shield), and a gown
Detailed Rationale: Standard precautions require barrier protection
(gloves, gown, mask, and eye protection) whenever splashes, sprays, or
spurts of blood or body fluids are anticipated to protect mucous
membranes and skin.
Question 5
Which transmission-based precaution is required for a patient
diagnosed with active pulmonary tuberculosis?
A. Contact Precautions
B. Droplet Precautions
C. Airborne Precautions
D. Standard Precautions alone
Correct Answer: C. Airborne Precautions
Detailed Rationale: Pulmonary tuberculosis is spread via microscopic
droplet nuclei that remain suspended in the air, requiring placement in
, an Airborne Infection Isolation Room (AIIR) and the use of N95
respirators.
Question 6
What is the correct CDC-recommended sequence for donning (putting
on) personal protective equipment (PPE)?
A. Gloves, gown, mask, eye protection
B. Gown, mask or respirator, eye protection, gloves
C. Mask, gloves, gown, eye protection
D. Gloves, eye protection, gown, mask
Correct Answer: B. Gown, mask or respirator, eye protection, gloves
Detailed Rationale: Donning begins with the gown, followed by the
mask/respirator, eye protection, and finally gloves pulled up over the
gown cuffs to ensure full coverage.
Question 7
What is the correct CDC-recommended sequence for doffing (removing)
personal protective equipment (PPE)?
A. Gown, gloves, mask, eye protection
B. Gloves, eye protection, gown, mask or respirator
C. Mask, gown, gloves, eye protection
D. Gloves, mask, gown, eye protection
Correct Answer: B. Gloves, eye protection, gown, mask or respirator
Control Complete Questions & Detailed Explanations and
solutions 2026/2027
Question 1
In the epidemiological triangle, which component refers to the external
agent, host, or environmental factors that cause or contribute to
disease?
A. The chain of transmission
B. The triad of causation
C. The host immunity barrier
D. The clinical incubation index
Correct Answer: B. The triad of causation
Detailed Rationale: The epidemiological triad consists of the agent,
host, and environment, which interact to determine whether disease
occurs within a population.
Question 2
What is the primary reason why alcohol-based hand rub (ABHR) is
preferred over soap and water for routine hand hygiene in healthcare
settings?
A. It completely destroys bacterial spores such as Clostridioides difficile.
B. It has superior microbicidal activity, requires less time, and causes
less skin irritation.
,C. It leaves a chemical residue that remains active on skin for 24 hours.
D. It removes heavy organic soil and blood better than water.
Correct Answer: B. It has superior microbicidal activity, requires less
time, and causes less skin irritation.
Detailed Rationale: Alcohol-based hand rubs are highly effective against
most vegetative bacteria, fungi, and enveloped viruses while being
faster and gentler on skin than repeated soap and water washing. They
do not, however, kill spores.
Question 3
Which term defines the presence and multiplication of microorganisms
on or in a host without causing clinical signs of disease or tissue
invasion?
A. Infection
B. Colonization
C. Pathogenicity
D. Virulence
Correct Answer: B. Colonization
Detailed Rationale: Colonization means microorganisms are present
and replicating on body surfaces without triggering an immune
response or clinical pathology, whereas infection involves tissue
invasion and damage.
Question 4
,According to standard precautions, what is the minimum required
personal protective equipment (PPE) when there is a potential for
exposure to splashes or sprays of blood or body fluids?
A. Sterile gown and shoe covers only
B. Gloves, mask, eye protection (goggles or face shield), and a gown
C. N95 respirator alone
D. No PPE is required if gloves are worn
Correct Answer: B. Gloves, mask, eye protection (goggles or face
shield), and a gown
Detailed Rationale: Standard precautions require barrier protection
(gloves, gown, mask, and eye protection) whenever splashes, sprays, or
spurts of blood or body fluids are anticipated to protect mucous
membranes and skin.
Question 5
Which transmission-based precaution is required for a patient
diagnosed with active pulmonary tuberculosis?
A. Contact Precautions
B. Droplet Precautions
C. Airborne Precautions
D. Standard Precautions alone
Correct Answer: C. Airborne Precautions
Detailed Rationale: Pulmonary tuberculosis is spread via microscopic
droplet nuclei that remain suspended in the air, requiring placement in
, an Airborne Infection Isolation Room (AIIR) and the use of N95
respirators.
Question 6
What is the correct CDC-recommended sequence for donning (putting
on) personal protective equipment (PPE)?
A. Gloves, gown, mask, eye protection
B. Gown, mask or respirator, eye protection, gloves
C. Mask, gloves, gown, eye protection
D. Gloves, eye protection, gown, mask
Correct Answer: B. Gown, mask or respirator, eye protection, gloves
Detailed Rationale: Donning begins with the gown, followed by the
mask/respirator, eye protection, and finally gloves pulled up over the
gown cuffs to ensure full coverage.
Question 7
What is the correct CDC-recommended sequence for doffing (removing)
personal protective equipment (PPE)?
A. Gown, gloves, mask, eye protection
B. Gloves, eye protection, gown, mask or respirator
C. Mask, gown, gloves, eye protection
D. Gloves, mask, gown, eye protection
Correct Answer: B. Gloves, eye protection, gown, mask or respirator
