What describes a flaw that can bring down a system if it fails?

What describes a flaw that can bring down a system if it fails?

• A. Persistent
• B. Non-Persistent
• C. Redundant Hardware
• D. Single Point of Failure (SPOF)

Answer: (D)

A single point of failure is a flaw in system design where the failure of one element can bring the entire system down. When a critical component has no backup or alternate path, everything depends on that one piece remaining operational; if it fails, there’s no redundancy to keep the system running, leading to downtime and potentially widespread impact. The fix is to remove that single dependency by adding redundancy, alternative pathways, or failover capabilities so no one component can take the whole system offline. Persistent versus non-persistent describe how long something lasts or how it behaves over time, not the vulnerability of an architecture to a cascading failure. Redundant hardware refers to having multiple components to cover for each other, which actually mitigates a single point of failure rather than describing the flaw itself. The idea here is the absence of redundancy in a critical area, which creates a risky point that can cause full system failure.

A single point of failure is a flaw in system design where the failure of one element can bring the entire system down. When a critical component has no backup or alternate path, everything depends on that one piece remaining operational; if it fails, there’s no redundancy to keep the system running, leading to downtime and potentially widespread impact. The fix is to remove that single dependency by adding redundancy, alternative pathways, or failover capabilities so no one component can take the whole system offline.

Persistent versus non-persistent describe how long something lasts or how it behaves over time, not the vulnerability of an architecture to a cascading failure. Redundant hardware refers to having multiple components to cover for each other, which actually mitigates a single point of failure rather than describing the flaw itself. The idea here is the absence of redundancy in a critical area, which creates a risky point that can cause full system failure.