The high reliability of equipment ensures the effective operation of the network. Which of the following methods cannot improve equipment reliability?

Question

Options

• AThe power supply adopts maximum backup mode
• BRegularly back up device alarm logs
• CEquipment main control board 1+1 active and standby backup
• DThe interface board adopts multi-microengine load sharing

• A
  6% (2)
• B
  74% (23)
• C
  3% (1)
• D
  16% (5)

Explanation

Backing up device alarm logs (B) is a data preservation practice, not a reliability improvement - it protects historical records after a failure but does nothing to prevent failures or keep equipment running. The remaining options all directly enhance hardware availability: maximum power supply backup (A) ensures continuous power even if one supply fails; 1+1 active/standby backup on the main control board (C) provides instant failover if the primary board fails; and multi-microengine load sharing on interface boards (D) distributes traffic so no single engine becomes a bottleneck or single point of failure.

Memory tip: Ask yourself - does this option keep the device running during a fault? Power redundancy, board failover, and load sharing all answer "yes." Log backup answers "no" - it only helps you analyze what went wrong after the fact, not survive the outage.

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