A water-utility AI fabric links with mismatched optics that come up briefly but fail expected signaling margins. What is the correct bring-up conclusion?
Select an answer to reveal the explanation.
Short Explanation
A link light with bad margins is a leaky valve that still drips—do not bless mismatched optics for the water-utility fabric. Swap in qualified media that meet the signaling requirements.
Full Explanation
If a water-utility AI fabric links with mismatched optics that come up briefly but fail expected signaling margins, the correct bring-up conclusion is to reject the mismatched optics or cable combination and install qualified media that meet fabric signaling requirements. A momentary link-up LED does not prove margin under load; mismatched media often train marginally and then error when digital-twin or collective traffic rises. Rejection and replacement with qualified parts restores the signaling budget the fabric design assumes.
Accepting the links because any link-up LED is sufficient ignores failed margins and invites production flapping. Raising application retries until margins no longer matter papers over a physical-layer defect with software churn and burns job time. Painting pull-tabs green to indicate municipal approval is cosmetic fraud relative to optical/electrical qualification.
Exam caveat: brief link-up with failed signaling margins is a media reject—qualified replacements required; LEDs, retries, and painted tabs are not acceptance criteria. Operational check: measure or review link health/margin on the water-utility fabric, quarantine mismatched optics/cables, install qualified media per switch/NIC guidance, re-validate margins under a stress or burn-in step, and only then clear bring-up.