SK0-005 Question #57: Real Exam Question with Answer & Explanation

Question

While deploying a new four-node web server cluster, a systems administrator has been instructed to use a technology that will make the website highly available without incurring any additional hardware costs. Which of the following clustering options is the BEST solution?

Options

• AActive-active
• BActive-passive
• CAll-nodes
• DRound robin

Explanation

DNS round robin is the best solution for achieving high availability without additional hardware costs, as it distributes web traffic across multiple servers using only DNS configurations.

Common mistakes.

• A. Active-active clustering often requires dedicated load balancing hardware or sophisticated software solutions that typically incur additional costs beyond the servers themselves.
• B. Active-passive clustering, while providing high availability, often involves specialized software or hardware for failover management and does not utilize all nodes concurrently for load balancing, potentially incurring additional costs.
• C. 'All-nodes' is not a standard or recognized clustering configuration that specifically addresses the constraints of high availability without additional hardware costs.

Concept tested. Load balancing and high availability methods

Reference. https://learn.microsoft.com/en-us/windows-server/administration/windows-dns/load-balancing-with-dns-round-robin

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