MFA combines two or more factors to authenticate a user. MFA uses five authentication factors: something you know, something you have, something you are, somewhere you are, and something you do.
Physical security is based on an organization's security policies and plans. A physical security program should address the following—physical safeguards, vulnerabilities and threats, monitoring systems, service and utility interruptions, and unauthorized entry, vandalism, or theft. Physical security should focus on deterrence to prevent security events and detection measures to discover events threatening the organization. Threats have four general categories—environmental, man-made, site-specific, and technical.
Environmental controls are a part of physical security. Server and networking devices can have a variety of cooling requirements, such as cold rows...