[Cisspstudy] Shon Harris Physical Security Questions pt2

[Andrea Gatta]

To elaborate further on that - 'optical' can be intended as 'photoelectric'.
Which in turn is one of the mechanism to detect smoke (pag. 440 AIO).

To this end having the exact question from the book you mentioned might be
the only way to further investigate the matter.

Andrea

On Tue, Sep 29, 2009 at 11:42 AM, Andrea Gatta <andrea.gatta at gmail.com>wrote:

> Any chance to have the exact question ?
>
> Andrea
>
> On Mon, Sep 28, 2009 at 11:03 PM, Holland, Brandon <hollandb at frmaint.com>wrote:
>
>>  Have a question on types of fire detectors:
>>
>> Shon Harris states that there are two types: Heat activated and Smoke
>> activated.
>>
>> I was reading a quiz book Mike’s CISSP Passport I believe it’s called (have
>> to get it at the house to find the question) but it specifically asked
>> what of the types listed was not a valid type of detector…
>>
>> I can’t remember the question specifically enough to give the answers,
>> but I believe it was smoke, heat and flame, and the forth I’m not sure on
>> but believe was “optical.”  Having over-analyzed this to insanity, I’m
>> asking for feedback on this.
>>
>> According to Wikipedia (*http://en.wikipedia.org/wiki/Fire_alarm_system*<http://en.wikipedia.org/wiki/Fire_alarm_system>)
>> there are a whole bunch of different types
>>
>> “Automatically activated devices can take many forms intended to respond
>> to any number of detectable physical changes associated with fire: convected
>> thermal energy; *heat detector*<http://en.wikipedia.org/wiki/Heat_detector>,
>> products of combustion;*smoke detector*<http://en.wikipedia.org/wiki/Smoke_detector>,
>> radiant energy; *flame detector*<http://en.wikipedia.org/wiki/Flame_detector>,
>> combustion gasses; *carbon monoxide detector*<http://en.wikipedia.org/wiki/Carbon_monoxide_detector>
>>  and release of extinguishing agents; water-flow detector. The newest
>> innovations can use cameras and computer algorithms to analyze the visible
>> effects of fire and movement in applications inappropriate for or hostile to
>> other detection methods.”
>>
>> I guess if I were to answer the question now I’d pick optical (as NOT
>> being valid), as multiple detectors use an optical sensor but in
>> different ways, to achieve the goal of detecting the fire by their
>> specific method.
>>
>> Any feedback on this?
>>
>> Brandon Holland
>>
>> Army Fleet Support
>>
>> ITS | Network Services
>>
>> Ph:  598-0626
>>
>>
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>>
>>
>
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