After enabling cross-zone load balancing on your Classic Load Balancer, you notice increased data transfer costs. Why?

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AWS - Elastic Load Balancing

ACross-zone load balancing causes inter-AZ data transfer charges

BCross-zone load balancing increases instance CPU usage causing higher costs

CCross-zone load balancing requires additional load balancer nodes

DCross-zone load balancing disables caching causing more data transfer

Step-by-Step Solution

Solution:

Step 1: Understand cost impact of cross-zone load balancing
Cross-zone load balancing sends traffic across availability zones, which incurs inter-AZ data transfer charges.
Step 2: Evaluate other options
It does not increase CPU usage significantly, add nodes, or disable caching.
Final Answer:
Cross-zone load balancing causes inter-AZ data transfer charges -> Option A
Quick Check:
Cross-zone = possible inter-AZ data costs [OK]

Quick Trick: Cross-zone traffic across zones may increase data transfer fees [OK]

Common Mistakes:

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