Security Systems & Electronic Locking Devices Flashcards
7 cards from real CPL practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 7 Security Systems & Electronic Locking Devices flashcards as text
Which access control topology stores all access decisions locally at the door controller without communicating with a central server?
Answer: Offline standalone topology
Offline standalone controllers store credential databases and schedules in local memory, making access decisions without any network connection.
What is the purpose of a 'shunt' relay in an alarm system connected to an access control door?
Answer: To temporarily bypass the door alarm when an authorized user opens the door
A shunt relay suppresses the door-open alarm during the brief period an authorized user passes through, preventing nuisance alarms.
A locksmith is asked to install an access-controlled door that must comply with ADA requirements. Which hardware selection is mandatory?
Answer: Lever handles or push/pull hardware requiring no tight grasping or twisting
ADA requires operable parts to be usable with one hand without tight grasping, pinching, or twisting, mandating lever-style or push/pull hardware.
Which encryption standard is used by MIFARE DESFire EV2 cards to secure card-to-reader communication?
Answer: AES-128
MIFARE DESFire EV2 uses AES-128 encryption for mutual authentication between the card and reader, replacing older DES-based schemes.
What does the term 'anti-passback' mean in an access control system?
Answer: Preventing a card from being used to enter the same area twice without first exiting
Anti-passback rules require that a cardholder exit a zone before they can re-enter it, preventing credential sharing and tailgating.
An installer is terminating a Wiegand reader cable. Which color wire typically carries the DATA0 line per standard Wiegand convention?
Answer: Green
By industry convention, the green wire carries DATA0 and the white wire carries DATA1 in a standard Wiegand interface cable.
Which regulation requires federal facilities and their contractors to use FIPS 201-compliant smart cards for physical access control?
Answer: HSPD-12 / PIV standard
Homeland Security Presidential Directive 12 (HSPD-12) mandates use of Personal Identity Verification (PIV) credentials meeting FIPS 201 for federal facility access.