Sybex Chp 10 Flashcards
If malicious people desire to gain access to your physical facility, __________ are the first line of defense, and __________ are the last line of defense.
If malicious people desire to gain access to your physical facility, PHYSICAL CONTROLS are the first line of defense, and PEOPLE are the last line of defense.
__________ is a systematic effort to identify relationships between mission-critical applications, processes, and operations and all the necessary supporting elements.
Critical Path Analysis
In physical security, the functional order of controls are:
delay
denial
deterrence
detection
In order:
deterrence
denial
detection
delay
The expected typical functional lifetime of the device given a specific operating environment
MTBF
MTTR
MTTF
MTTF
Mean Time To Failure
The average length of time required to perform a repair on the device
MTTR
MTBF
MTTF
MTTR
Mean Time To Repair
An estimation of the time between the first and any subsequent failures
MTTR
MTBF
MTTF
MTBF
Mean Time Between Failures
If the MTTF and MTBF are roughly the same, which one will some manufactures choose to show?
MTTF
Mean Time To Failure
The walls of your server room should have a __________ minimum fire rating
one hour
A short duration of line noise disturbance
Inrush
Noise
Transient
Fault
Transient - A short duration of line noise disturbance
Inrush - an initial surge of power usually associated with connecting to a power source
Noise - a steady interfering power disturbance or fluctuation
Fault - a momentary loss of power
Computer room temperature should be kept at:
60 to 75 degrees
Computer room humidly should be kept at:
40 to 60 percent.
Too much humidity causes corrosion.
Too little humidity causes static electricity.
What type of fire extinguisher is used for common combustibles?
Class A - Water or Soda Ash
What type of fire extinguisher is used for Liquids?
Class B - CO2, Halon, Soda Ash
Class B - NO WATER as liquids float on water
What type of fire extinguisher is used for Electrical?
Class C - CO2, halon
Class C - NO WATER as water and electricity no do match
What type of fire extinguisher is used for Metal?
Class D - Dry Powder
Oxygen suppression cannot be used for Class D as burning metal produces its own oxygen
Always full of water, water discharges immediately when suppression is triggered
Deluge System
Wet Pipe
Dry Pipe
Preaction System
Wet Pipe
Contains compressed air, once suppression is triggered, air escapes, opening a valve for water to fill the pipe
Deluge System
Wet Pipe
Dry Pipe
Preaction System
Dry Pipe
Inappropriate for environments that contain electronics and computers
Deluge System
Wet Pipe
Dry Pipe
Preaction System
Deluge System
The most appropriate system for an environment that contains people and electronics
Deluge System
Wet Pipe
Dry Pipe
Preaction System
Preaction System
The most common cause of failure for a water-based system is __________
human error
Destructive elements of a fire include:
smoke
heat
suppression media (water, soda ash)
fire department looking for hot spots with axes
Fence that deters casual trespassers
Fence 3 to 4 feet high
Fence that deters most intruders except determined ones
Fence 6 to 7 feet high
Fence that deters even determined intruders
Fence 8 feet high with 3 strands barbed wire
A form of a gate that prevents more than one person at a time from entering and restricts movement in one direction
turnstile
A form of gate with double set of doors that is often protected by a security guard
mantrap
Most commonly used form of perimeter control
lighting
Most common and inexpensive form of physical access control
key locks
Lighting should illuminate critical areas with __________ candle feet of power
2 candle feet of power
Which type of alarm is nonsensical:
Deterrent Alarm
Preventive Alarm
Repellent Alarm
Notification Alarm
o such thing as a Preventive Alarm
What type of control is this?
CCTV
Preventative Control
What type of control is this?
Reviewing CCTV recorded events
Detective Control
What type of control is this?
facility construction and selection
Administrative Control
What type of control is this?
Construction materials
Physical Control
What type of control is this?
HVAC, power supplies, and fire detection and suppression
Technical (Logical) Controls
True / False
Centralized computer rooms need to be human compatible
False
True / False
A security guard or other monitoring system must be deployed to prevent abuse, masquerading, and piggybacking
True
True / False
Audit Trails and Access Logs can either be created manually or automatically.
True
True / False
Main purpose of a UPS is to provide clean consistent power. Secondary is to provide battery backup for limited periods of time.
True
