What is the maximum number of mezzanine cards that can be installed in an MX840c?

Question

Options

• A6
• B5
• C3
• D8

• A
  90% (35)
• B
  3% (1)
• C
  5% (2)
• D
  3% (1)

Explanation

Option A (6) is correct because the Juniper MX840c supports a maximum of 6 mezzanine cards, which slot into the chassis to provide flexible interface expansion for high-density deployments. Options B (5) and C (3) are plausible-sounding numbers but do not match the actual hardware specification - they may be confused with slot counts on other MX Series components or partial configurations. Option D (8) is a common "more is better" distractor that exceeds the physical capacity of the MX840c chassis.

Memory tip: Think of the MX840c - the "8" in the model name might tempt you toward 8, but the actual mezzanine limit is 6. Associate "6 mezz cards for the 840c" by remembering that 6 is less than 8, just as the mezzanine count is less than the prominent digit in the model name.

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