Chapter 3 Key Terms Flashcards
Physical Security
the protection of corporate assets from threats such as unauthorized entry, theft or damage.
Prevention
taking the steps necessary to avert unauthorized access, theft, damage, or other type of security breach.
Detection
Detection is identifying that a security breach has happened or is happening.
Recovery
the process of returning a system to a functional state and repairing any damage.
Access list
A list of personnel who are authorized to enter a secure facility.
Mantrap
A specialized entrance with two locking doors that create a security buffer zone between two areas.
Turnstile
A barrier that permits entry in only one direction.
Double-entry door
A double-entry door has two doors that are locked from the outside but have crash bars on the inside that allow easy exit.
Bollard
Bollards are short, sturdy posts used to prevent a vehicle from crashing into a secure area.
Smart card
Access cards that have encrypted access information. Smart cards can be contactless or require contact.
Proximity Card
Proximity cards, also known as radio frequency identification (RFID) cards, are a subset of smart cards that use the 125 kHz frequency to communicate with proximity readers.
Biometric Locks
Biometric locks increase security by using fingerprints or iris scans. They reduce the threat from lost keys or cards.
Demilitarized Zone (DMZ)
A DMZ provides enhanced security by isolating your publicly accessible network from your privately accessible network.
Air gap
A security method that physically isolates a portion of the network (such as a computer, a server, or a small network of computers) from the internet or any other unsecured networks.
Faraday Cage
Faraday cages are designed to block all electromagnetic emissions.
Infrastructure
refers to the systems that support the site. Infrastructure components include AC, power, heating, ventilation, air conditioning systems (HVAC), gas, and water.
Cold aisle
created by having the front of the equipment face toward the center of the aisle. Typically, cold aisles face air conditioner output ducts.
Hot aisle
Hot aisles have the back of the equipment face the aisle. Typically hot aisles face air conditioner return ducts.
Electro-magnetic interference (EMI)
caused by noise between the hot wire and the ground or neutral wires in a circuit. This burst of energy is known as an electromagnetic pulse (EMP.) It can disrupt the signal in a data cable.
