Refer to the exhibit. An engineer experiences an issue presented with the Cisco UCS system. Which action resolves the issue?

Question

Exhibits

Options

• AChange the discovery policy backplane speed preference to 4x10G.
• BConnect the adapter to the fabric interconnects using a breakout cable.
• CUpdate the 1/O module firmware on the Cisco UCS chassis.
• DReboot the blade server and acknowledge the fault.

• A
  76% (22)
• B
  3% (1)
• C
  7% (2)
• D
  14% (4)

Explanation

Option A is correct because the UCS chassis discovery policy governs how I/O modules negotiate backplane speed with the fabric interconnects - when the policy's backplane speed preference (e.g., 1x40G) doesn't match the actual capability of the installed I/O module (4x10G), discovery fails and the chassis or blades won't come online properly; changing the policy to 4x10G aligns the configuration with the hardware.

Why the distractors are wrong:

• B is wrong because breakout cables solve upstream uplink splitting (fabric interconnect to ToR switches), not chassis-level discovery mismatches.
• C is wrong because a firmware update addresses software bugs or version incompatibilities, not a policy misconfiguration that's causing the speed mismatch.
• D is wrong because rebooting and acknowledging a fault is a surface-level action that doesn't fix the underlying configuration error in the discovery policy.

Memory tip: Think "policy must mirror hardware" - in Cisco UCS, discovery only succeeds when the Discovery policy speed matches the Device (I/O module) speed. Both "D" words must agree, or discovery breaks.

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