In the test case of front-end interface module redundancy, you must first power off the controller and then the front-end interface module.

Question

Options

• ATrue
• BFalse

• A
  26% (7)
• B
  74% (20)

Explanation

Option B is correct because in a redundant front-end interface module configuration, the redundancy itself is designed to allow the module to be powered off or swapped without requiring the controller to be powered down first. The purpose of redundancy is to maintain system availability during maintenance or fault testing, so forcing a controller power-off would defeat that purpose and cause unnecessary downtime. Option A is incorrect because it assumes a sequential shutdown dependency that does not exist in properly implemented redundant architectures - the controller remains operational while the redundant module is tested or replaced.

Memory tip: Think of redundancy as a "hot-swap" design - if you had to power everything off first, there would be no point in having redundancy at all.

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