Dynatrace Pro Certification Practice Exam

Which of the following is a requirement for a cluster node?

1. Randomly sized nodes

2. Equally sized nodes

3. Nodes with varied performance capabilities

4. Nodes with different software versions

The correct answer is: Equally sized nodes

The requirement for a cluster node being equally sized nodes is based on the need for consistency and balance in the resources available across the cluster. When all nodes within a cluster are of equal size, it means each one has the same processing power, memory, and storage capabilities. This uniformity ensures that workloads can be distributed evenly among the nodes, allowing for more efficient resource utilization and reducing the risk of bottlenecks or performance degradation. Using equally sized nodes also simplifies management and scaling. When you decide to add additional nodes to a cluster, having the same specifications means that integration is seamless, and you won't have to account for varied performance characteristics among the nodes. This consistency supports better load balancing and fault tolerance, as if one node goes down, others can take over without concern about disparities in performance. Nodes with random sizes, varied performance capabilities, or different software versions can lead to complications in managing the cluster. They may cause uneven load distribution and could complicate the failover process, hindering the overall resilience and performance of the cluster environment.