What component enables the MX840c compute sled to have this configuration? 4 x CPUs 4 x mezzanine cards 2 x mini mezzanine cards 48 DDR4 DIMM slot

Question

Options

• Amotherboard expansion module
• Bmemory expansion module
• Cprocessor expansion module
• Dmezzanine expansion module

• B
  5% (1)
• C
  89% (17)
• D
  5% (1)

Explanation

Option C is correct because the processor expansion module is the component that physically extends the MX840c compute sled to support a quad-processor (4 CPU) configuration - and because each processor brings its own associated memory controllers and I/O pathways, this expansion naturally yields more DIMM slots (48 vs. the base 24) and additional mezzanine/mini-mezzanine card slots as well.

Why the distractors are wrong:

• A (motherboard expansion module) - this is not a real component category in this product line; the term is fabricated and serves as a plausible-sounding distractor.
• B (memory expansion module) - this type of component increases RAM capacity or slot count only; it does not enable additional CPUs or I/O expansion slots.
• D (mezzanine expansion module) - mezzanine cards handle I/O (networking, storage); an expansion for them wouldn't drive CPU count or the cascading DIMM/slot increases seen here.

Memory tip: Think "processor expansion = everything expands." More CPUs mean more memory channels (more DIMMs) and more I/O lanes (more mezzanine slots) - it's a cascade effect. If the question shows a configuration that doubled everything, the root cause is always the processor expansion, not memory or I/O modules.

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