Which approach is used to redundantly power IT servers?

Question

Options

• ADual power whips
• BDual cord, dual power supply
• CBoth 120 V and 208 V circuits
• DBoth solid and stranded copper cables

• A
  16% (10)
• B
  71% (44)
• C
  10% (6)
• D
  3% (2)

Explanation

Dual cord, dual power supply is the industry-standard method for ensuring that a server remains operational if one power path fails. Each power supply in the server connects to a separate power cord, which in turn connects to a separate circuit or UPS, so no single point of failure can take the server offline.

Option A is wrong because "power whips" are flexible conduit assemblies used to route power to equipment, not a redundancy strategy on their own. Option C is wrong because using different voltages (120 V and 208 V) describes circuit types available in a data center, not a redundancy architecture for individual servers. Option D is wrong because solid versus stranded copper is a physical cable characteristic related to installation flexibility, not power redundancy.

Memory tip: Focus on the word "dual" appearing twice in option B - two cords AND two power supplies - which signals complete end-to-end redundancy, the defining requirement for resilient server power.

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