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Why does a load balancer improve fault tolerance in a cloud environment?

hard📝 Conceptual Q10 of 15
AWS - Elastic Load Balancing
Why does a load balancer improve fault tolerance in a cloud environment?
AIt detects unhealthy servers and stops sending them traffic, preventing failures
BIt stores all user data to prevent loss
CIt encrypts all network traffic automatically
DIt increases the CPU power of servers
Step-by-Step Solution
Solution:

  1. Step 1: Understand fault tolerance in cloud

    Fault tolerance means the system keeps working even if some parts fail.

  2. Step 2: Identify how load balancer helps fault tolerance

    Load balancers detect unhealthy servers and avoid sending traffic to them, preventing failures.

  3. Final Answer:

    It detects unhealthy servers and stops sending them traffic, preventing failures -> Option A

  4. Quick Check:

    Load balancer improves fault tolerance by avoiding bad servers [OK]
Quick Trick: Load balancer skips bad servers to keep service up [OK]
Common Mistakes:
MISTAKES
  • Confusing storage with fault tolerance
  • Assuming encryption equals fault tolerance
  • Thinking it boosts server CPU

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