A spare component that is pre-installed and can automatically take over when the primary fails is called a

A spare component that is pre-installed and can automatically take over when the primary fails is called a

• A. Hot Spare
• B. Cold Spare
• C. Warm Site
• D. Hot Site

Answer: (A)

The concept being tested is automatic failover with a ready-to-use standby. A hot spare is a spare component that is already installed, powered, and connected, and kept in a state that allows it to take over immediately if the primary fails. Because it’s online and synchronized enough to assume control without human intervention, downtime is minimized and service continuity is preserved. This differs from a cold spare, which sits unused until you manually install or configure it when a failure occurs, leading to longer downtime. A warm spare is prepared but may require some steps to bring it fully online, so failover isn’t as instantaneous. A hot site refers to a whole secondary facility ready to operate, not a single spare component within the system.

The concept being tested is automatic failover with a ready-to-use standby. A hot spare is a spare component that is already installed, powered, and connected, and kept in a state that allows it to take over immediately if the primary fails. Because it’s online and synchronized enough to assume control without human intervention, downtime is minimized and service continuity is preserved.

This differs from a cold spare, which sits unused until you manually install or configure it when a failure occurs, leading to longer downtime. A warm spare is prepared but may require some steps to bring it fully online, so failover isn’t as instantaneous. A hot site refers to a whole secondary facility ready to operate, not a single spare component within the system.