NITC Cross-Connection Control Certification
Examination
1. Under a more complex scenario, which reasoning best supports the correct
treatment of A cross-connection is a physical arrangement through which a potable
water supply can be connected to a contamination source.?
A. A pipe support
B. A pressure gauge
C. A water meter only
D. Connection between potable supply and contamination source
Answer: D
Rationale: The correct answer is D because connection between potable supply and
contamination source directly addresses the principle tested by this question.
Option A is incorrect because it does not best address the stated principle. Option B
is incorrect because it does not best address the stated principle. Option C is
incorrect because it does not best address the stated principle. Option D is correct.
2. Which action should normally be prioritized when an examination scenario
requires correct handling of Backflow is the undesirable reversal of flow in a potable
water system.?
A. Undesirable flow reversal
B. Normal forward flow
C. Water treatment
D. Pipe expansion
Answer: A
,Rationale: The correct answer is A because undesirable flow reversal directly
addresses the principle tested by this question. Option A is correct. Option B is
incorrect because it does not best address the stated principle. Option C is incorrect
because it does not best address the stated principle. Option D is incorrect because
it does not best address the stated principle.
3. The practical significance of Backpressure occurs when the downstream pressure
becomes greater than the potable supply pressure. becomes clearest when which
condition or decision is considered first?
A. Water temperature rises
B. Downstream pressure exceeds supply pressure
C. Supply pressure exceeds downstream pressure
D. Pipe diameter increases
Answer: B
Rationale: The correct answer is B because downstream pressure exceeds supply
pressure directly addresses the principle tested by this question. Option A is
incorrect because it does not best address the stated principle. Option B is correct.
Option C is incorrect because it does not best address the stated principle. Option D
is incorrect because it does not best address the stated principle.
4. Which choice best represents the relationship between Backsiphonage occurs
when negative or reduced supply pressure draws water from a connected source
toward the potable system. and the surrounding process or system?
A. Excess downstream pressure only
B. High chlorine level
C. Negative or reduced supply pressure
D. High water temperature
,Answer: C
Rationale: The correct answer is C because negative or reduced supply pressure
directly addresses the principle tested by this question. Option A is incorrect
because it does not best address the stated principle. Option B is incorrect because
it does not best address the stated principle. Option C is correct. Option D is
incorrect because it does not best address the stated principle.
5. Which outcome would most strongly indicate that An air gap provides a physical
separation between a potable outlet and the receiving vessel or flood-level rim. has
been applied correctly in a routine case?
A. Physical separation
B. A check valve
C. A pressure regulator
D. A spring-loaded valve
Answer: A
Rationale: The correct answer is A because physical separation directly addresses
the principle tested by this question. Option A is correct. Option B is incorrect
because it does not best address the stated principle. Option C is incorrect because
it does not best address the stated principle. Option D is incorrect because it does
not best address the stated principle.
6. What evidence would most appropriately support a conclusion involving A
reduced pressure principle backflow preventer uses two check valves and a relief
valve arranged to protect against backflow conditions. during a professional
evaluation?
A. Two relief valves only
B. A strainer only
, C. One check valve only
D. Two checks and a relief valve
Answer: D
Rationale: The correct answer is D because two checks and a relief valve directly
addresses the principle tested by this question. Option A is incorrect because it
does not best address the stated principle. Option B is incorrect because it does not
best address the stated principle. Option C is incorrect because it does not best
address the stated principle. Option D is correct.
7. Which choice best represents the relationship between A double check assembly
uses two independently acting check valves to protect against certain
non-health-hazard conditions. and the surrounding process or system?
A. An air gap
B. Two check valves
C. One relief valve
D. A pressure regulator
Answer: B
Rationale: The correct answer is B because two check valves directly addresses the
principle tested by this question. Option A is incorrect because it does not best
address the stated principle. Option B is correct. Option C is incorrect because it
does not best address the stated principle. Option D is incorrect because it does not
best address the stated principle.
8. A technician, analyst, or practitioner encounters a situation involving A vacuum
breaker admits air when necessary to prevent backsiphonage through a protected
connection.; what is the most appropriate interpretation?
A. Remove chlorine
Examination
1. Under a more complex scenario, which reasoning best supports the correct
treatment of A cross-connection is a physical arrangement through which a potable
water supply can be connected to a contamination source.?
A. A pipe support
B. A pressure gauge
C. A water meter only
D. Connection between potable supply and contamination source
Answer: D
Rationale: The correct answer is D because connection between potable supply and
contamination source directly addresses the principle tested by this question.
Option A is incorrect because it does not best address the stated principle. Option B
is incorrect because it does not best address the stated principle. Option C is
incorrect because it does not best address the stated principle. Option D is correct.
2. Which action should normally be prioritized when an examination scenario
requires correct handling of Backflow is the undesirable reversal of flow in a potable
water system.?
A. Undesirable flow reversal
B. Normal forward flow
C. Water treatment
D. Pipe expansion
Answer: A
,Rationale: The correct answer is A because undesirable flow reversal directly
addresses the principle tested by this question. Option A is correct. Option B is
incorrect because it does not best address the stated principle. Option C is incorrect
because it does not best address the stated principle. Option D is incorrect because
it does not best address the stated principle.
3. The practical significance of Backpressure occurs when the downstream pressure
becomes greater than the potable supply pressure. becomes clearest when which
condition or decision is considered first?
A. Water temperature rises
B. Downstream pressure exceeds supply pressure
C. Supply pressure exceeds downstream pressure
D. Pipe diameter increases
Answer: B
Rationale: The correct answer is B because downstream pressure exceeds supply
pressure directly addresses the principle tested by this question. Option A is
incorrect because it does not best address the stated principle. Option B is correct.
Option C is incorrect because it does not best address the stated principle. Option D
is incorrect because it does not best address the stated principle.
4. Which choice best represents the relationship between Backsiphonage occurs
when negative or reduced supply pressure draws water from a connected source
toward the potable system. and the surrounding process or system?
A. Excess downstream pressure only
B. High chlorine level
C. Negative or reduced supply pressure
D. High water temperature
,Answer: C
Rationale: The correct answer is C because negative or reduced supply pressure
directly addresses the principle tested by this question. Option A is incorrect
because it does not best address the stated principle. Option B is incorrect because
it does not best address the stated principle. Option C is correct. Option D is
incorrect because it does not best address the stated principle.
5. Which outcome would most strongly indicate that An air gap provides a physical
separation between a potable outlet and the receiving vessel or flood-level rim. has
been applied correctly in a routine case?
A. Physical separation
B. A check valve
C. A pressure regulator
D. A spring-loaded valve
Answer: A
Rationale: The correct answer is A because physical separation directly addresses
the principle tested by this question. Option A is correct. Option B is incorrect
because it does not best address the stated principle. Option C is incorrect because
it does not best address the stated principle. Option D is incorrect because it does
not best address the stated principle.
6. What evidence would most appropriately support a conclusion involving A
reduced pressure principle backflow preventer uses two check valves and a relief
valve arranged to protect against backflow conditions. during a professional
evaluation?
A. Two relief valves only
B. A strainer only
, C. One check valve only
D. Two checks and a relief valve
Answer: D
Rationale: The correct answer is D because two checks and a relief valve directly
addresses the principle tested by this question. Option A is incorrect because it
does not best address the stated principle. Option B is incorrect because it does not
best address the stated principle. Option C is incorrect because it does not best
address the stated principle. Option D is correct.
7. Which choice best represents the relationship between A double check assembly
uses two independently acting check valves to protect against certain
non-health-hazard conditions. and the surrounding process or system?
A. An air gap
B. Two check valves
C. One relief valve
D. A pressure regulator
Answer: B
Rationale: The correct answer is B because two check valves directly addresses the
principle tested by this question. Option A is incorrect because it does not best
address the stated principle. Option B is correct. Option C is incorrect because it
does not best address the stated principle. Option D is incorrect because it does not
best address the stated principle.
8. A technician, analyst, or practitioner encounters a situation involving A vacuum
breaker admits air when necessary to prevent backsiphonage through a protected
connection.; what is the most appropriate interpretation?
A. Remove chlorine
