Ct Access Control Systems Contractor
Exam Questions And Correct Answers
(Verified Answers) Plus Rationales 2026
Q&A| Instant Download Pdf
1. Which of the following best defines “fail-secure” lock behavior?
A. The lock remains unlocked when power is lost.
B. The lock remains locked when power is lost.
C. The lock triggers an alarm when power is lost.
D. The lock enters low-power mode when power is lost.
Answer: B
Rationale: Fail-secure means the door remains locked if power is cut,
preserving security.
2. Under fire-alarm tie-in requirements, which behavior is required of access-
controlled doors?
A. They must stay locked for at least 30 more seconds.
B. They must unlock immediately for egress.
C. They must trigger a local audible alarm.
D. They must switch to battery backup until fire control is restored.
Answer: B
Rationale: Fire codes require that on fire-alarm activation, electrically
locked doors unlock to allow safe egress.
3. A Wiegand reader cable run exceeds recommended distance. Which issue
is most likely to occur?
A. Power overload at the reader
B. Data corruption or read errors
,C. Magnetic interference
D. Overheating of the controller
Answer: B
Rationale: Wiegand protocol is susceptible to signal degradation over long
distances, leading to read errors.
4. What is the typical signal voltage for a Wiegand data line at the reader
end?
A. 5 VDC
B. 12 VDC
C. 24 VAC
D. 3.3 VDC
Answer: A
Rationale: Wiegand data lines typically operate at TTL-level 5 V for
reliable data transmission.
5. For a door with a magnetic lock rated at 600 lb holding force, which of the
following hardware is most appropriate?
A. A heavy-duty door closer only
B. A pair of standard hinges
C. A rated steel frame and heavy-duty reinforced door
D. A glass door without frame
Answer: C
Rationale: The holding force requires door and frame hardware rated to
resist forced entry.
6. What does “PoE” stand for in the context of IP-based access control
readers?
A. Power over Ethernet
B. Protocol over Ethernet
C. Power on Entry
D. Peripheral over Ethernet
,Answer: A
Rationale: PoE supplies power and data over the Ethernet cable,
simplifying IP-reader installation.
7. Which wiring gauge is generally recommended for power runs supplying
magnetic locks over moderate distances?
A. 22 AWG
B. 18 AWG
C. 14 AWG
D. 26 AWG
Answer: C
Rationale: 14 AWG reduces voltage drop over distance and supports the
current draw of magnetic locks.
8. In an access control database, what does “locks staging” refer to?
A. Scheduling a lock timing change
B. Temporarily bypassing the lock
C. Having the door pre-unlocked during an event
D. Programming multiple locks to react in a sequence
Answer: D
Rationale: Locks staging allows coordinated actions of multiple locks —
useful in lockdowns or sequential access flows.
9. Which device is most appropriate to detect door forced-open events for
audit logging?
A. Magnetic lock
B. Request-to-Exit (REX) button
C. Door position switch (DPS) or contact sensor
D. Keypad reader
Answer: C
Rationale: A DPS or contact sensor detects actual door position changes —
essential for forced-open or propped-door alarms.
10. For a door that must remain open during business hours but lock after
hours automatically, you would use:
, A. A standard key locksmith
B. A timed relay tied to controller schedule
C. A mechanical deadbolt
D. A motion-activated battery lock
Answer: B
Rationale: A timed relay allows lock behavior to follow schedule — locking
after hours automatically.
11. Which standard is commonly referenced for egress door hardware in
commercial buildings?
A. UL 294
B. NFPA 101 (Life Safety Code)
C. ANSI 300
D. IEEE 802.3
Answer: B
Rationale: NFPA 101 governs means of egress and exit hardware,
including requirements for access-controlled doors.
12. What feature distinguishes a “reader-in / reader-out” door from a
“reader-in only” door?
A. It has two different card formats.
B. It requires credential presentation both on entry and exit.
C. It uses biometric authentication.
D. It supports fire-alarm tie-in.
Answer: B
Rationale: “Reader-in / reader-out” enforces credential presentation in
both directions, improving security and audit trail.
13. What is the main advantage of “fail-safe“electromagnetic locks in
emergency exit scenarios?
A. They never require power.
B. They unlock instantly on power loss, aiding egress.
C. They lock more strongly when power resumes.
D. They use less power overall.
Exam Questions And Correct Answers
(Verified Answers) Plus Rationales 2026
Q&A| Instant Download Pdf
1. Which of the following best defines “fail-secure” lock behavior?
A. The lock remains unlocked when power is lost.
B. The lock remains locked when power is lost.
C. The lock triggers an alarm when power is lost.
D. The lock enters low-power mode when power is lost.
Answer: B
Rationale: Fail-secure means the door remains locked if power is cut,
preserving security.
2. Under fire-alarm tie-in requirements, which behavior is required of access-
controlled doors?
A. They must stay locked for at least 30 more seconds.
B. They must unlock immediately for egress.
C. They must trigger a local audible alarm.
D. They must switch to battery backup until fire control is restored.
Answer: B
Rationale: Fire codes require that on fire-alarm activation, electrically
locked doors unlock to allow safe egress.
3. A Wiegand reader cable run exceeds recommended distance. Which issue
is most likely to occur?
A. Power overload at the reader
B. Data corruption or read errors
,C. Magnetic interference
D. Overheating of the controller
Answer: B
Rationale: Wiegand protocol is susceptible to signal degradation over long
distances, leading to read errors.
4. What is the typical signal voltage for a Wiegand data line at the reader
end?
A. 5 VDC
B. 12 VDC
C. 24 VAC
D. 3.3 VDC
Answer: A
Rationale: Wiegand data lines typically operate at TTL-level 5 V for
reliable data transmission.
5. For a door with a magnetic lock rated at 600 lb holding force, which of the
following hardware is most appropriate?
A. A heavy-duty door closer only
B. A pair of standard hinges
C. A rated steel frame and heavy-duty reinforced door
D. A glass door without frame
Answer: C
Rationale: The holding force requires door and frame hardware rated to
resist forced entry.
6. What does “PoE” stand for in the context of IP-based access control
readers?
A. Power over Ethernet
B. Protocol over Ethernet
C. Power on Entry
D. Peripheral over Ethernet
,Answer: A
Rationale: PoE supplies power and data over the Ethernet cable,
simplifying IP-reader installation.
7. Which wiring gauge is generally recommended for power runs supplying
magnetic locks over moderate distances?
A. 22 AWG
B. 18 AWG
C. 14 AWG
D. 26 AWG
Answer: C
Rationale: 14 AWG reduces voltage drop over distance and supports the
current draw of magnetic locks.
8. In an access control database, what does “locks staging” refer to?
A. Scheduling a lock timing change
B. Temporarily bypassing the lock
C. Having the door pre-unlocked during an event
D. Programming multiple locks to react in a sequence
Answer: D
Rationale: Locks staging allows coordinated actions of multiple locks —
useful in lockdowns or sequential access flows.
9. Which device is most appropriate to detect door forced-open events for
audit logging?
A. Magnetic lock
B. Request-to-Exit (REX) button
C. Door position switch (DPS) or contact sensor
D. Keypad reader
Answer: C
Rationale: A DPS or contact sensor detects actual door position changes —
essential for forced-open or propped-door alarms.
10. For a door that must remain open during business hours but lock after
hours automatically, you would use:
, A. A standard key locksmith
B. A timed relay tied to controller schedule
C. A mechanical deadbolt
D. A motion-activated battery lock
Answer: B
Rationale: A timed relay allows lock behavior to follow schedule — locking
after hours automatically.
11. Which standard is commonly referenced for egress door hardware in
commercial buildings?
A. UL 294
B. NFPA 101 (Life Safety Code)
C. ANSI 300
D. IEEE 802.3
Answer: B
Rationale: NFPA 101 governs means of egress and exit hardware,
including requirements for access-controlled doors.
12. What feature distinguishes a “reader-in / reader-out” door from a
“reader-in only” door?
A. It has two different card formats.
B. It requires credential presentation both on entry and exit.
C. It uses biometric authentication.
D. It supports fire-alarm tie-in.
Answer: B
Rationale: “Reader-in / reader-out” enforces credential presentation in
both directions, improving security and audit trail.
13. What is the main advantage of “fail-safe“electromagnetic locks in
emergency exit scenarios?
A. They never require power.
B. They unlock instantly on power loss, aiding egress.
C. They lock more strongly when power resumes.
D. They use less power overall.
