Which Cloud Component Provides High Availability?
Which of the following is classified as high availability in a cloud environment?
Community Votes
100% of anonymous learners picked answer D. Votes are pick records left by other test-takers — they are not the verified answer.
Community Insight
The question evaluates knowledge of cloud resilience patterns, with the primary trap being the misattribution of security-focused services like WAFs or access brokers to availability functions.
High availability in cloud computing requires architectures that eliminate single points of failure through redundancy and traffic distribution. Community consensus confirms that a load balancer is the definitive cloud component for ensuring continuous application availability.
Test-takers often select WAF or Access Broker because these services also handle incoming requests, but they lack the built-in health monitoring and multi-instance routing required for true high availability.
Community Discussion (3 comments)
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Expert Analysis
Why the Answer Is Correct
A load balancer sits at the edge of a cloud deployment and intelligently distributes incoming client requests across multiple backend instances or virtual machines. By continuously performing health checks and rerouting traffic away from failed nodes, it prevents any single resource from becoming a bottleneck or point of failure. This active-passive or active-active distribution model is the foundational mechanism for achieving high availability (HA) and fault tolerance in modern cloud environments.Why the Other Options Are Wrong
An access broker handles identity federation and single sign-on (SSO) decisions, focusing strictly on authentication and authorization rather than infrastructure resilience. Cloud HSMs provide hardware-backed cryptographic key storage and compliance, serving a purely security and data protection role. Web Application Firewalls (WAFs) inspect and filter HTTP/S traffic to block malicious requests, which enhances security posture but does not distribute workload or ensure service continuity during outages.Community Comment Notes
Candidates universally validated option D, emphasizing that load balancers actively prevent server overload by spreading network traffic. One highly upvoted comment noted that this distribution guarantees availability by ensuring no single server bears excessive demand. Another highlighted the direct correlation between traffic distribution and maintaining uninterrupted application performance, reinforcing the official exam rationale.Official Reference
Exam Strategy
When reviewing cloud services, always categorize them by their primary purpose: security, identity, compute, or availability. Practice mapping each managed service to its core architectural pattern to quickly eliminate security-focused distractors when questions target reliability and uptime.
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