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CISSP > Domain 3: Environmental Controls > Flashcards

Domain 3: Environmental Controls Flashcards

1
Q

Proper level of humidity in a data center can do what?

A

Mitigate static by grounding all circuits in a proper manner

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2
Q

High humidity levels in a data center can do what?

A

Can cause corrosion (condensed water in the air gets into the equipment)

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3
Q

Alerts when temperature exceeds an established safe baseline

A

Heat Detectors

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4
Q
  • Smoke detector
  • Contain a small radioactive source that creates a smoke electric charge
  • When smoke interrupts the electric charge an alarm will trigger
A

Ionization-based smoke detectors

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5
Q
  • Smoke detector
  • Contain an LED and photoelectric sensor that generates a small charge while receiving light
  • When smoke interrupts the electric charge an alarm will trigger
A

Photoelectric sensors

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6
Q
  • Detects infrared or ultraviolet light emitted in fire

- Sensor must align with fire

A

Flame Detector

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7
Q

Individual that ensures all personnel safely evacuates the building in the event of an emergency or drill

A

Safety warden

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8
Q

Individual that ensures that all personnel are accounted for at the emergency meeting point

A

Meeting Point Leader

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9
Q
  • Provides immediate alerts in the event of emergencies i.e. severe weather, threat of violence etc.
A

Duress Warning systems

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10
Q
  • Type of fire
  • Combustibles: wood and paper
  • Extinguished by: water or soda acid
A

Class A Fires

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11
Q
  • Type of fire
  • Combustibles: burning alcohol, oil, and gasoline
  • Extinguished by: gas (Halon/Halon substitute, CO2) or soda acid
A

Class B Fires

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12
Q
  • Type of fire
  • Combustibles: Electrical fires
  • Extinguished by: gas (Halon/Halon substitute, CO2)
A

Class C Fires (Class E in UK)

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13
Q
  • Type of fire
  • Combustibles: burning metals
  • Extinguished by: dry powder
A

Class D Fires

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14
Q
  • Type of fire
  • Combustibles: kitchen fires i.e. burning oil or grease
  • Extinguished by: wet chemicals
A

Class K Fires (Class F in UK)

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15
Q
  • Fire suppressant
  • Lowers temperature of fire
  • Safest of all suppressive agents
A

Water

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16
Q
  • Fire suppressant
  • Mixture of Sodium Bicarbonate and water
  • Creates a foam that can cut off the oxygen supply
A

Soda Acid

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17
Q
  • Fire suppressant
  • Usually sodium chloride
  • Smothers a fire
  • Used to extinguish metal fires
A

Dry Powder

18
Q
  • Fire suppressant
  • Chemical is usually potassium acetate mixed with water
  • Used to extinguish kitchen fires
A

Wet Chemicals

19
Q
  • Fire suppressant
  • Odorless and colorless removes oxygen in the air
  • Dangerous and only recommended for unstaffed areas i.e. electrical substations
A

CO2

20
Q
  • Fire suppressant
  • Chemical reaction that consumes energy and lowers temperature of fire
  • Has ozone depleting properties and is being phase out
A

Halon

21
Q
  • Sprinkler System
  • Contains a small glass bulb (or metal order versions) designed to melt or break at a specific temperature
  • Causing the sprinkler head to open and water to flow.
  • Pipes are always filled with water
A

Wet Pipes

22
Q
  • Sprinkler System
  • Valve holds the water back and will remain closed as long as sufficient air pressure remains in the pipes.
  • Pipes filled with compress air
A

Dry Pipe

23
Q
  • Sprinkler System

- Sprinkler heads are open and larger than dry pipe heads

A

Deluge

24
Q
  • Sprinkler System

- Combination of different sprinkler systems and requires two separate triggers to release water

A

Preaction

25
Q
  • Fire suppressant
  • Best used for datacenter
  • Halon replacement
  • Gas-based
A

FM-200

26
Q
  • Fire suppressant
  • Gas-based
  • Halon replacement
  • Safest for humans
A

FE-13

27
Q

What are some fire suppressants that are replacements for Halon?

A
  • FM-200
  • FE-13
  • Argon
  • Inergen
28
Q

Designed to prevent the theft of computer equipment

A

Lockdown Enclosure

29
Q

What are the functional order of controls?

A
  1. Deterrence
  2. Denial
  3. Detection
  4. Delay
30
Q

What are the key elements in making a site selection?

A
  1. Visibility
  2. Composition of surrounding area
  3. Area accessibility
  4. Effects of natural disasters
31
Q

Momentary loss of power

A

Fault

32
Q

Complete loss of power

A

Blackout

33
Q

Momentary low voltage

A

Sag

34
Q

Prolonged low voltage

A

Brownout

35
Q

Momentary high voltage

A

Spike

36
Q

Prolonged high voltage

A

Surge

37
Q

Initial surge of power usually associated with connecting to a power source, whether primary or alternate/secondary

A

Inrush

38
Q

Steady interfering power disturbance or fluctuation

A

Noise

39
Q

Short duration of line noise disturbance

A

Transient

40
Q

Nonfluctuating pure power

A

Clean

41
Q

The wire in an electrical circuit that is grounded

A

Ground

CISSP (30 decks)

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