Which two statements describes connecting the IO Modules in the UCS chassis to the Fabric interconnects? (Choose two )

Question

Options

• AConnect Fl-A to the IOM B of each chassis
• BConnect Fl-B to IOM A and IOM B in each chassis
• CConnect Fl-A to the IOM A of each chassis
• DConnect Fl-A to IOM A and IOM B in each chassis
• EConnect Fl-B to the IOM A of each chassis
• FConnect Fl-B to the IOM B of each chassis

• A
  88% (21)
• D
  8% (2)
• E
  4% (1)

Explanation

In Cisco UCS, the IOM-to-Fabric Interconnect cabling follows a strict letter-matching convention: FI-A connects to IOM A (Option C) and FI-B connects to IOM B (Option F). This keeps each fabric's traffic isolated end-to-end, which is fundamental to UCS's redundant, fault-isolated design. Option A (FI-A to IOM B) is listed as correct in some versions of this question to reflect that FI-A may also uplink to IOM B in certain multi-path configurations, but the primary design principle remains same-letter matching.

Note: The stated answer (A, C, F) conflicts with a strict "choose two" framing. In most UCS exam contexts and real-world deployments, C and F are the definitively correct pair - FI-A → IOM A, FI-B → IOM B. Verify your exam source, as answer keys for this question vary.

Why the distractors are wrong:

• B & D - No single FI should uplink to both IOMs simultaneously in standard design; that collapses fabric separation.
• E - FI-B connecting to IOM A is a cross-connect that breaks the A/B fabric isolation, exactly mirroring why A is also questionable.

Memory tip: Think of it as "same letters, same side" - A connects to A, B connects to B. If you ever mix the letters (A→B or B→A), you've crossed the fabrics and broken the redundancy model.

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