Physical and Environmental Security Flashcards

1
Q

Brownout

A

A reduction of voltage by the utility company for a prolonged period of time.

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2
Q

Electrical circuits

A

Used to detect open windows or doors- many work on magnetic switches that close the electrical circuit when the window is opened and moves the magnet away from the electrical switch.

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3
Q

Electronic discharge

A

A power surge generated by a person or device contacting another device and transferring a high voltage shock.

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4
Q

Infrared/ night vision lighting

A

Can assist in low-light conditions and augment closed circuit TV cameras to monitor an area at night.

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5
Q

In-Rush current

A

The initial surge of current experienced when power supply resumes after failure. This can damage equipment or cause breakers to trip/ fail.

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6
Q

Interference (noise)

A

A natural occurrence that happens when unwanted signals are generated in circuits that are in close proximity.

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7
Q

Lock bumping

A

Involves cutting a key to the maximum depth on all cuts and hammering the key with a “Tomahawk” (a flexible hammer) to transfer maximum force to all of the pins so that they jump into the open position.

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8
Q

Microwave

A

Receiver diode picks up transmitted and “bounced” energy waves in an enclosure. Intruder disrupts the waves and activates the alarm.

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9
Q

Motion sensors

A

Most work on Passive Infrared technology. Various types may autodial an emergency number, sound an alarm, or trigger lights when they sense motion.

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10
Q

Network Access Control (NAC)

A

Basic functions include validating software and release levels (Firewall, Antivirus, Anti-Spam, etc.) and providing login security to the device and the network.

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11
Q

Passive infrared

A

Objects radiate infrared with the heat of their bodies. Detector notes the change and triggers an alarm.

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12
Q

Pressure/ motion sensitive

A

Use of buried fiber and pressure plates to detect vehicles and persons traveling close to the buries cable.

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13
Q

Sounds and vibration

A

Microphones and other monitoring equipment are used to detect changes in sound or listen in to a facility.

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14
Q

Photoelectric

A

Active infrared beam that triggers an alarm when the beam is broken.

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15
Q

Sag/ Dip

A

A short period of low voltage.

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16
Q

Standby/ backup lighting

A

Lighting with a battery supply that is automatically turned on when power goes out.

17
Q

Strike/ strike plate

A

These form a separate rectangular metal piece that is inserted into the door jam.