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CISM study material · question 915 of 1000

Which trade-off does NIST describe between buying replacement equipment on demand and storing it in advance?

  1. Both cost the same but stored equipment is less reliable
  2. Storing removes the need for a vendor agreement entirely
  3. Buying on demand is faster but more expensive; storing is slower but cheaper
  4. Buying on demand is cheaper but adds shipping and setup time; storing costs money and risks obsolescence but starts recovery sooner
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Answer: D. Buying on demand is cheaper but adds shipping and setup time; storing costs money and risks obsolescence but starts recovery sooner

SP 800-34r1 states purchasing equipment when needed can be cost-effective but adds shipping and setup time to recovery, while storing unused equipment requires storage space and maintenance and risks obsolescence, but shortens the time to recovery.

Source: NIST SP 800-34 Rev. 1 (NIST) — Sec. 3.4.4 Equipment Replacement

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