Physical Security Flashcards
What are the three elements of the fire triangle?
Heat
Oxygen
Fuel
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?
higher
What increases the potential for ESD? Lower or higher humidity?
Lower
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
Natural Surveillance
Territorial Re-inforcement
Which CPTED strategy uses security zones (or defensible space) to limit or restrict movement and differentiate between public, semi private and private areas that require differing levels of protection?
Natural Access Control
A sidewalk and lighting would be considered which type of CPTED strategy?
Natural Access Control
What term compliments Natural Access Controls by using mechanical and/or operational controls windows and door locks, alarms, etc?
Target Hardening
Maximising visibility and activity in strategic areas, ie windows to overlook streets and landscaping to eliminate hidden areas is otherwise known as?
Natural Surveillance
maintenance activities and displaying prominent signage are categorised under which CPTED strategy?
Territorial Re-enforcement
Which type of wall should be used to protect the most sensitive areas?
Kevlar (bulletproof)
What is a Plenum?
The vacant area above a drop ceiling or below a raised floor
What is positive flow in relation to drainage?
Carries drainage away from the building