Security Science Quiz

1. What is adjustable loop response time utilized for?

a) Fire alarm systems

b) Telephone line seizure

c) Burglar alarm systems

d) Holdup alarm systems

2. What is a CDP?

a) Critical Detection Point

b) Circular Detector Proximity

c) Circuit Detector Point

d) Conductance Determination Point

3. UL 98 refers to …

a) Magnetic contacts

b) Enclosed and dead-front switches 

c) Lightning and grounding

d) EMI

4. Edwin Holmes established the first network of monitored alarms by a central station in New York in what year?

a) 1977

b) 1877

c) 1866

d) 1968

5. Pseudo random encoding refers to what aspect of a security system?

a) The control panel’s microprocessor after 1979

b) The control panel’s microprocessor before 1979

c) The alarm transmission line 

d) Long-range radio 

6. UL-Listed Certificated Burglar Alarm Systems shall comply with what UL Standard?

a) UL1023

b) UL985

c) UL681

d) UL864 9th Edition

7. How is the acronym SLC defined?  

a) Security line center

b) Security line clear

c) Secure linear centrifuge

d) Signaling line circuit

8. An SLC loop is designed for what type of control panel?

a) Burglar alarm system

b) Fire alarm system

c) Conventional fire alarm system

d) Access control system

9. The term RPM describes what type of alarm technology?

a) Radio patrol monitoring 

b) RadaR pin multiplexer 

c) Remote polling module  

d) Recreational perimeter motion

10. If you find that a 12V battery reads 12V with your digital meter, what if anything else do you need to do?

a) Nothing, because the battery has the factory specified voltage

b) Check the age of the battery through its date code

c) Test the battery under load

d) Check your meter

11. Pursuant to the 2007 edition of NFPA 72, under what circumstances shall a smoke detector be required to detect the invisible particles of combustion?

a) When using an ionization detector

b) When using a rate of rise heat detector

c) When using a smoke detector

d) When the fire alarm system is armed

12. Central Stations are generally listed by Underwriters Laboratories under which UL Standard?

a) UL691

b) UL681

c) UL827

d) UL687

13. UL 1981 is the standard for …

a) Remote-Station Automation Systems

b) Central-Station Automation Systems

c) Generator Backup Equipment for Central Stations

d) Generator Backup Equipment for Remote Stations

14. The requirements of Article 760 are codified in …

a) NFPA 70E

b) NFPA 70

c) NFPA 720

d) NFPA 730

15. UL 681 refers to what type of alarm system?

a) Fire Alarm System

b) High Temperature Alarm System

c) Low Temperature Alarm System

d) Burglar and Holdup Alarm Systems

16. UL 1641 refers to what type of alarm system?

a) Commercial Burglar Alarm Systems

b) Proprietary Burglar Alarm Systems

c) Residential Burglar Alarm Systems

d) Vault Burglar Alarm Systems


Think Like a Thief

One of the best ways to help maximize the effectiveness of security system design, recommendations, programming, installation and central station monitoring is for you to proactively look at the protected premises as if you were an intruder and then try to provide electronic countermeasures to help you recognize ways to counter what you believe an intruder might do to circumvent the alarm system. That being said, the customer has to be willing to pay for what you recommend, and to the extent they do not want to pay for all of your recommendations, it should be noted accordingly.

Jeffrey D. Zwirn, CPP, CFPS, CFE, DABFET, CHS-III, SET, RI, is a forensic alarm industry expert and President of Teaneck, N.J.-based IDS Research & Development Inc. He can be reached at (201) 287-0900 or This column is not intended as legal advice and should not be construed as such.

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About the Author


Jeffrey D. Zwirn, CPP, CFPS, CFE, FACFEI, CHS-IV, SET, CCI, FASI&T, MBAT, writes Security Sales & Integration’s “Security Science” column. He is also president of IDS Research and Development, an alarm and security consultation, expert witness and training authority providing nationwide services on all issues related to alarm and security matters. He can be reached at (201) 287-0900.

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