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CISM study material · question 900 of 1000

How does NIST characterise the cost and readiness extremes of the alternate site options?

  1. The mirrored site costs most but gives virtually complete availability; the cold site costs least to maintain but takes substantial time to equip
  2. The hot site costs most and the mobile site least, with the shortest and longest setup respectively
  3. The mirrored site costs least because it uses existing infrastructure
  4. The cold site gives the highest availability because it is unshared
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Answer: A. The mirrored site costs most but gives virtually complete availability; the cold site costs least to maintain but takes substantial time to equip

SP 800-34r1 states mirrored sites are the most expensive alternative but provide almost 100 percent availability, while cold sites are the least expensive to maintain and require substantial time to acquire and install equipment.

Source: NIST SP 800-34 Rev. 1 (NIST) — Sec. 3.4.3 Alternate Sites

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