a. FM-200
b. Argon
c. Water fog
d. Inergen
73. c. The production of Halogenated agents (Halon 1211 and 1301) was stopped in January 1994 due to their depletion of the ozone layer. Many replacements were found, but the water fog is the safest one to humans.
74. Which of the following prevents tailgating or piggybacking in a computer center?
a. Cameras
b. Mantraps
c. Sensors
d. Alarms
74. b. Tailgating (piggybacking) means an unauthorized person is following an authorized person into a facility. It can be prevented by the use of mantraps where they take a measurement of the body weight of a person entering the computer center doors and combine it with a biometric feature such as a fingerprint scan. If the person is not authorized to enter this highly sensitive area, he will not be allowed to proceed further, and security authorities will be notified.
Surveillance cameras are passive and do not take any action. Sensors and alarms do not have the intelligence built in similar to that of mantraps and can give rise to false alarms.
75. Which of the following should be the first step to be performed prior to installing cable wires in a computer center facility?
a. Implement physical security controls.
b. Test the cables.
c. Check with local building codes.
d. Label the cables.
75. c. Prior to any wiring installation, it is good to contact the official local building code standard sources and people to ensure that the planned cable plant is consistent with electrical and fire codes. This is to protect the safety and security of the facility. Physical security controls can include acquiring dedicated space with a locked door to serve as a wiring closet. After checking with the local building codes, the next step is to test the cable for bad spots. By labeling both ends of a cable, a built-in map is available that identifies each cable, its termination point and length, and electrical characteristics.
76. Which of the following should be considered as delaying devices in physical security?
a. Lights
b. Safes
c. Locks
d. Vaults
76. c. Locks are considered as delaying devices only and not bars to entry. The longer it takes to open or break a lock, the shorter the patience for an intruder, and the wider the window of opportunity for detection. The idea is that officials will soon be arriving at the place if it takes longer to open a lock.
Lights serve as a deterrent to violators. Safes provide protection against fire, burglary, and robbery. Vaults are enlarged safes and can be supported by alarm systems.
77. Which of the following does not assess the vulnerability of a facility to damage or an attack?
a. Inspection
b. History of losses
c. Security controls
d. Security budget
77. d. Examining a security budget cannot reveal much because there is no direct correlation between the budget and the vulnerability. An inspection of the facility by an experienced inspector can reveal the status of the facility and its associated controls. Examination of the facility’s record of losses can reveal how bad the situation is. The degree of security controls installed can reveal whether high-value property is properly safeguarded from theft by insiders or attack by outsiders.
78. Which of the following is a safe practice to ensure physical security?
a. Deter
b. Detect
c. Delay
d. Deny
78. a. It is preferred to deter attacks against property, whether criminal or not. If not deterred, access to selected areas or properties should be denied. If not denied, attacks that occur should be detected. If not detected in time, attacks should be delayed to allow time for response by authorities.
79. How are fires that involve energized electrical equipment rated?
a. Class A fires
b. Class B fires
c. Class C fires
d. Class D fires
79. c. A classification of fires is based on the nature of the combustibles, relating directly to the efficacy of extinguishing agents. Four classes are described as follows:
Class A: Fires involving ordinary combustible solids (e.g., wood, cloth, paper, rubber, and many plastics)
Class B: Fires involving flammable or combustible liquids and flammable gases
Class C: Fires involving energized electrical equipment
Class D: Fires involving certain combustible materials such as magnesium and sodium
80. A device or devices that sense(s) vibration or motion is (are) called:
a. Proximity detector and vibration detector
b. Seismic detector and vibration detector
c. Proximity detector and seismic detector
d. Intrusion detector and vibration detector
80. b. A seismic detector is a device that senses vibration or motion and thereby senses a physical attack upon an object or structure. A vibration detector is the same as a seismic detector. A proximity detector is a device that initiates a signal (alarm) when a person or object comes near the protected object. An intrusion detector is a device designed to detect an individual crossing a line or entering an area.
81. Which of the following represents the upper end of the protection scale against electrical problems (e.g., sags) in a computer center?
a. Battery backup
b. Power filters
c. Power conditioners
d. Uninterruptible power supply
81. d. The order of the protection scale from the lower end to upper end is as follows: battery backup, power filters, power conditioners, and uninterruptible power supply (UPS). Battery backup has a short life (that is, low-end protection) compared to the UPS (which is high-end protection). Power filters filter the sags, spikes, and impulse noises. Power conditioners regulate the voltage into the system. A UPS can clean up most of the power problems such as spikes, surges, sags, brownouts, blackouts, frequency variations, transient noises, and impulse hits.
82. Which of the following pairs of items create a conflicting situation in a computer center?
a. Fire-resistant file cabinets, vital records
b. Sprinkler systems, water damage
c. Fire detection systems, alarms
d. Furniture and equipment, noncombustible materials
82. b. Sprinkler systems are desirable if the computer room construction contains combustible materials. Although sprinklers extinguish fire, extensive water can damage some areas and materials in the room due to use of the sprinkler system. Therefore, sprinkler systems and water damage create a conflicting situation.
Fire-resistant file cabinets and vital records have no conflict because vital records should be stored in a fire-resistant cabinet file. Fire detection systems and alarms have no conflict because fire detection and extinguishing systems should have alarms to signal trouble and to communicate problems to a specific location that is always manned. Furniture and equipment and noncombustible materials have no conflict because furniture and equipment in a computer room should be constructed of metal or other noncombustible material.