Flashcards in Physical Security Deck (94)
What are the three elements of the fire triangle?
In relation to a Class A fire what would the extinguishing method be for common combustibles such as paper, wood, furniture and clothing?
Water or Soda Acid
In relation to a Class B fire what would the extinguishing method be for burnable fuels such as gasoline or oil?
CO2, Soda Acid or Halon
In relation to a Class C fire what would the extinguishing method be for electrical fires such as computers or electronics?
CO2 or Halon
In relation to a Class D fire what would the extinguishing method be for special fires such as chemical or grease fires?
May require total immersion or other special techniques
What should the first step be when fighting an electrical fire?
Turn off the computer
What is the first priority in any life-saving situation?
Saving human lives
What are the 5 electrical hazards that can affect equipment?
- Electrostatic discharge (ESD)
- Electrical noise
- Electrical anomalies
- Lightning strikes
- Magnetic fields
What is the ideal humidity range for computer equipment?
40 to 60%
Is condensation or corrosion caused by lower or higher humidity?
What increases the potential for ESD? Lower or higher humidity?
What are two types of electrical noise?
- Electromagnetic Interference (EMI)
- Radio Frequency Interference (RFI)
What are the two types of EMI?
- Common Made Noise
- Traverse Mode Noise
How is common made noise caused?
by different charges between hot and ground
How is traverse mode caused?
caused by a difference in power between the hot and neutral wires
What is RFI caused by?
Electrical components such as fluorescent lighting and electric cables
name 7 types of electric anomalies?
Blackout, Fault, Brownout, Sag, Inrush, Spike, Surge
In electric anomaly terms what is a blackout?
Total loss of power
In electric anomaly terms what is a fault?
Momentary loss of power
In electric anomaly terms what is a brownout?
Prolonged drop in voltage
In electric anomaly terms what is a sag?
Short drop in voltage
In electric anomaly terms what is a Inrush?
Initial power rush
In electric anomaly terms what is a spike?
Momentary rush of power
In electric anomaly terms what is a surge?
Prolonged rush of power
mnemonic for electric anomalies
Bob Frequently Buys Shoes In Shoe Stores
What type of equipment can be affected by magnetic fields?
Monitors and storage media
What is HVAC otherwise known as?
Heating, Ventilation and Air Conditioning
What does CPTED mean in relation to physical planning, design and constriction of facilities?
Crime Prevention Through Environmental Design
What are the 3 basic strategies of CPTED?
Natural Access Control