Final answer:
Hot site, facility access control, and audit trail are methods used in business continuity planning.
Step-by-step explanation:
A method used in business continuity planning is the hot site. A hot site is a backup facility equipped with hardware, software, and data that can be quickly deployed in the event of a disaster. It allows a business to continue its operations with minimal downtime.
Another method is facility access control. This involves implementing security measures to regulate access to important facilities, such as data centers or critical infrastructure, to prevent unauthorized entry and protect sensitive information.
Lastly, an audit trail is a method used to track and record all actions taken within a system or process. It provides a detailed history of activities, which can be useful in investigating and analyzing incidents.