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101 · Question #621
101 Question #621: Real Exam Question with Answer & Explanation
The correct answer is C: It allows easy scaling up of the application. A primary benefit of a load balancer is enabling horizontal scalability, allowing additional server instances to be added behind the load balancer to handle increased demand.
Question
What is a primary benefit of employing a load balancer to manage traffic for an application?
Options
- AIt reduces the number of client connections
- BIt provides a more uniform client experience
- CIt allows easy scaling up of the application
- DIt Reduces dropped connections
Explanation
A primary benefit of a load balancer is enabling horizontal scalability, allowing additional server instances to be added behind the load balancer to handle increased demand.
Common mistakes.
- A. A load balancer distributes existing client connections across multiple servers but does not reduce the total number of client connections - each client still establishes its own connection.
- B. While load balancers can improve consistency through session persistence and health checks, providing a uniform experience is a secondary effect, not the primary architectural benefit.
- D. Reducing dropped connections is a reliability side effect of removing single points of failure, but it is not the primary or defining benefit that distinguishes load balancing as a technology.
Concept tested. Load balancer primary benefit - horizontal application scaling
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