Explanation:
Something you are includes fingerprints, retina scans, or voice recognition.
Something you have includes smart cards, token devices, or keys.
Something you know includes a password, codes, PINs, combinations, or secret phrases. Somewhere you are including a physical location s or logical addresses, such as domain name, an IP address, or a MAC address.
Something you do includes your typing rhythm, a secret handshake, or a private knock http://en.wikipedia.org/wiki/Password_authentication_protocol#Working_cycle http://en.wikipedia.org/wiki/Smart_card#Security

Explanation
Cold site
Space and associated infrastructure (e.g., power, telecoms and environmental controls to support IT systems), which will only be installed when disaster recovery (DR) services are activated.
Warm site
Site that's partially equipped with some of the equipment (e.g., computing hardware and software, and supporting personnel); organizations install additional equipment, computing hardware and software, and supporting personnel when DR services are activated.
Hot site
Fully equipped site with the required equipment, computing hardware/software and supporting personnel; it's also fully functional and manned on a 24x7 basis so that it's ready for organizations to operate their IT systems when DR services are activated.