Explanation/Reference:
In response to an access-request from a client, a RADIUS server returns one of three authentication responses: access-accept, access-reject, or access-challenge, the latter being a request for additional authentication information such as a one-time password from a token or a callback identifier.
Source: TIPTON, Harold F. & KRAUSE, MICKI, Information Security Management Handbook, 4th Edition, Volume 2, 2001, CRC Press, NY, page 36.

Section: Risk, Response and Recovery
Explanation/Reference:
The first documentation rule when it comes to a BCP/DRP is "one plan, one building". Much of the plan revolves around reconstructing a facility and replenishing it with production contents. If more than one facility is involved, then the reader of the plan will find it difficult to identify quantities and specifications of replacement resource items. It is possible to have multiple plans for a single building, but those plans must be linked so that the identification and ordering of resource items is centralized. All other statements are correct.
Source: BARNES, James C. & ROTHSTEIN, Philip J., A Guide to Business Continuity Planning, John Wiley & Sons, 2001 (page 162).

As it provides much of the same functionality that RSA provides: digital signatures, secure key distribution,and encryption. One differing factor is ECC's efficiency. ECC is more efficient that RSA and any other asymmetric algorithm.
The following answers are incorrect because :
RSA is incorrect as it is less efficient than ECC to be used in handheld devices.
SHA is also incorrect as it is a hashing algorithm.
RC4 is also incorrect as it is a symmetric algorithm.
Reference : Shon Harris AIO v3 , Chapter-8 : Cryptography , Page : 631 , 638.

Hierarchical Storage Management (HSM) provides a continuous on-line
backup by using optical or tape "jukeboxes," similar to WORMs.
Source: KRUTZ, Ronald L. & VINES, Russel D., The CISSP Prep Guide: Mastering the
Ten Domains of Computer Security, 2001, John Wiley & Sons, Page 71.

Explanation/Reference:
A Hot Site contains everything needed to become operational in the shortest amount of time.
The following answers are incorrect:
Computers and peripherals. Is incorrect because no mention is made of cables. You would not be fully operational without those.
Computers and dedicated climate control systems. Is incorrect because no mention is made of peripherals.
You would not be fully operational without those.
Dedicated climate control systems. Is incorrect because no mentionis made of computers, cables and peripherals. You would not be fully operational without those.
According to the OIG, a hot site is defined as a fully configured site with complete customer required hardware and software provided by the service provider. A hot site in the context of the CBK is always a RENTAL place. If you have your own site fully equipped that you make use of in case of disaster that would be called a redundant site or an alternate site.
Wikipedia: "A hot site is a duplicate of the original site of the organization, with full computer systems as well as near-complete backups of user data."
References:
OIG CBK, Business Continuity and Disaster Recovery Planning (pages 367 - 368) AIO, 3rd Edition, Business Continuity Planning (pages 709 - 714)
AIO, 4th Edition, Business Continuity Planning , p 790.
Wikipedia - http://en.wikipedia.org/wiki/Hot_site#Hot_Sites