Modern web service systems are designed for high availability and resiliency. Which concept pertains to the ability to detect problems within a system, environment, or application and programmatically invoke redundant systems or processes for mitigation?
Fault tolerance allows a system to continue operating properly in the event of the failure of some of its components. It involves the detection of problems within a system, environment, or application and the ability to programmatically invoke redundant processes or systems to mitigate those problems. This capability ensures that the system remains available even when certain failures occur, making it the concept that most directly pertains to the ability described in the question.
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A stupid question!
C. Fault tolerance
C. Fault tolerance
Modern web service systems are designed with high availability and resiliency, and automation plays a key role in detecting issues and triggering mitigation processes programmatically. Automated monitoring and recovery mechanisms ensure that when a failure or issue is detected, the system can automatically invoke redundant systems or recovery actions without manual intervention. Why Not the Others? A. Elasticity → Refers to scaling resources up or down dynamically based on demand but does not necessarily involve failure detection or recovery. B. Redundancy → Ensures backup systems exist, but redundancy alone does not detect failures or trigger recovery actions. C. Fault Tolerance → Ensures a system can continue operating despite failures, but it does not include the detection and automated response aspect that automation provides.
Automation → Detects failures and triggers mitigation processes dynamically (e.g., spinning up new instances, rerouting traffic, restarting failed services). Fault Tolerance → Prevents failures from impacting operations by designing systems that continue running despite failures (e.g., using redundant components, error correction, failover mechanisms).The question specifically asks for a concept that pertains to detecting problems and invoking redundant systems or processes for mitigation. Automation actively monitors the system, detects issues, and initiates mitigation actions (like provisioning additional resources or rerouting traffic). Fault Tolerance is about system design, ensuring that failures do not impact operations by having built-in redundancy (e.g., RAID storage, dual power supplies, load-balanced clusters). It does not actively detect issues or invoke recovery mechanisms programmatically—it simply ensures the system keeps running despite failures.