[Solved] Why might cross-zone load balancing cause uneven latency in some AWS regions? — Ans: Because traffic crosses zones, network latency varies by zone distance | AWS

AWS - Elastic Load Balancing

Why might cross-zone load balancing cause uneven latency in some AWS regions?

ABecause it caches responses causing stale data delays

BBecause cross-zone load balancing disables health checks

CBecause it forces all traffic through a single zone's instances

DBecause traffic crosses zones, network latency varies by zone distance

Step-by-Step Solution

Solution:

Step 1: Understand network latency impact
Cross-zone load balancing sends traffic across zones, which may have different physical distances causing latency differences.
Step 2: Evaluate other options
Cross-zone does not disable health checks, does not force traffic through one zone, and does not cache responses.
Final Answer:
Because traffic crosses zones, network latency varies by zone distance -> Option D
Quick Check:
Cross-zone traffic = possible latency variance [OK]

Quick Trick: Cross-zone traffic may increase latency due to zone distances [OK]

Common Mistakes:

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