Which description best contrasts hot-swap capability with normal operation and identifies the protections that enable hot-swapping?

Which description best contrasts hot-swap capability with normal operation and identifies the protections that enable hot-swapping?

• A. Hot-swap requires software-only reconfiguration.
• B. Hot-swap is unsafe without isolation.
• C. Hot-swap relies on immediate power-off.
• D. Hot-swap relies on power sequencing, isolation switches, a failover controller, and reconfiguration software.

Answer: (D)

Hot-swapping lets you swap components while the system stays up, so the protections must carefully manage power and state during the transition. The description that best fits describes a coordinated approach: power sequencing ensures devices turn on and off in the right order to prevent surges or backfeeds; isolation switches physically disconnect the component so it can be inserted or removed without affecting the rest of the system; a failover controller detects failures and redirects work to redundant components so service continues uninterrupted; and reconfiguration software updates the system’s maps and drivers so the new device is recognized and integrated safely. Taken together, these elements enable safe hot-swapping during normal operation. The other options miss essential hardware safeguards, rely on software alone, or imply power must be cut immediately, which doesn’t align with hot-swapping.

Hot-swapping lets you swap components while the system stays up, so the protections must carefully manage power and state during the transition. The description that best fits describes a coordinated approach: power sequencing ensures devices turn on and off in the right order to prevent surges or backfeeds; isolation switches physically disconnect the component so it can be inserted or removed without affecting the rest of the system; a failover controller detects failures and redirects work to redundant components so service continues uninterrupted; and reconfiguration software updates the system’s maps and drivers so the new device is recognized and integrated safely. Taken together, these elements enable safe hot-swapping during normal operation. The other options miss essential hardware safeguards, rely on software alone, or imply power must be cut immediately, which doesn’t align with hot-swapping.