What mechanism ensures requests are shared across several servers to prevent overload and improve performance?

• A. Load Balancing
• B. Local backup
• C. Log file
• D. Local

Answer: (A)

Distributing requests across multiple servers to prevent overload and improve performance is achieved with load balancing. A load balancer sits in front of a pool of servers and directs incoming traffic to the server that can handle it best, using strategies like round-robin, least connections, or health checks to avoid sending work to failed or overloaded machines. This spreads the workload, increases overall throughput, and reduces the chance of any single server becoming a bottleneck. It also helps with availability by quickly routing around unhealthy servers.

Local backup is for copying data to protect against loss and isn’t involved in handling live requests. A log file records events and activity for auditing and troubleshooting, not for distributing traffic. Local, in contrast, implies handling requests on a single server without sharing the load across multiple systems.