Physical Security Flashcards
mantrap
preventive control with 2 doors
bollard
post designed to stop a car
smart card
physical access control device containing an integrated circuit
tailgating
following an authorized person into a building without providing credentials
physical security
protects the CIA of physical assets
types of vehicle gates
I - residential
II - commercial/general acces (parking garage)
III - industrial/limited access (loading dock)
IV - restricted access (airport/prison)
lights
detective and deterrent control
fresnel
lights which are aimed in a particular direction
lumen
amount of light one candle produces
footcandles
1 footcandle = 1 lumen/ft2
lux
1 lux = 1 lumen/m2
CCTV
detectvie aid
depth of field
area that is in focus
field of view
entire area viewed by camera
locks
preventive control
bitting code
code that tells you how to cut a key, sometimes printed on the key
warded locks
must turn a key through channels (wards) ie skeleton key
spring bolt lock
locking mechanism springs in and out, door can be shut with lock out and it springs in
deadbolt
rigid lock
lock bumping
putting in a blank key that fits, then bumping the key to cause pins to jump and you open door
magnetic card
passive device
microwave motion detectors
work like doppler radar; sound sent out and echo received tells how far something is. If something else entires, echo is too fast
photelectric motion sensro
beam sent out and alarm sounds if beam interrupted
passive infrared
detects body heat
data remenance
data left behind
degaussing
destroys integrty of magnetic media
blackout
prolonged loss of power
brownout
prolonged low voltage
fault
short loss of power
surge
prolonged high voltage
spike
temporary high voltage
sag
temporary low voltage
positive pressure
air and water expelled from building
humidity level
40-55%
temperature
68-77
heat detectors
alert when temperature reaches predetermined high amount
smoke detectors
alaret through ionization or photoelectric
flame detectors
detect infrared or ultraviolet light emited in fire; need line of sight
class A extinguisher
ordinary combustables
class B extinguisher
flammable liquids
class C extinguisher
electrical equiment
class D extinguisher
combustible metals
class K extinguisher
kitchen (oil/fat) fires
water
suppresses fire by lowering temperature below the kindling or ignition point
soda acid
uses sodium bicarbonate mixed with water; suppresses fire by lowering temperature and starves O2 supply
dry power
sodium chloride; works by lowering temperature and starving it of O2; used on flammable metals
wet chemical
extinguish kitchen fires; usually potassium acetate/water; lowers the temperature
CO2
removes O2; risk of suffocating
halon
extinguishes via chemical reaction that consumes energy and lowers temperature of fire; phased out
montreal accord
exisint halon may be used, recycled halon may be used; should be replaced with Argon or FM-200
halon replacement
Argon, FE-13, FM-200, Inergen
countdown timers
gives people time to escape before fire suppression goes off
wet pipe
water right up to sprinkler head; each head independent; heads use bulbs to determine when to go off
orange - 135F; red - 155F; yellow - 175F; green - 200F; blue - 286F
dry pipe
pipes filled with compressed air; when air pressure drops, valve opens and water flows; used where pipes can freeze
deluge
dry pipes that deluge area when fire alarm goes off
PASS
pull pin, aim, squeeze handle, sweep the fire