Microsoft Azure Architect Technologies (AZ-300) Practice Exam

What is required for effective scaling out?

1. A single powerful instance

2. A backup system

3. Load distribution

4. Enhanced firewall protection

The correct answer is: Load distribution

Effective scaling out involves distributing workloads across multiple resources to handle increased demand without compromising performance. Load distribution ensures that tasks are evenly spread across a cluster of instances, allowing the system to manage fluctuations in traffic and resource requirements more efficiently. This approach not only enhances performance but also improves overall system reliability and fault tolerance, as the failure of one instance does not lead to bottlenecks or service disruptions. In contrast, relying on a single powerful instance can create a single point of failure and may limit the system's ability to respond to sudden spikes in demand. A backup system, while important for disaster recovery, does not directly contribute to the ongoing efficiency of scaling out resources. Enhanced firewall protection is essential for security but does not address the needs of resource distribution for scaling purposes. Overall, load distribution is key to achieving effective scaling out, allowing for seamless handling of increased workloads across multiple instances.