What can misconfigured cross-subnet calls lead to?

• A. It automatically updates validators.
• B. It can lead to security gaps and disrupted cross-subnet communication.
• C. It improves cross-subnet throughput.
• D. It has no impact on operations.

Answer: (B)

Cross-subnet calls depend on proper configuration of routing, authentication, and permissions between subnets. When these settings are misconfigured, security gaps can open up and communication across subnets can be disrupted. For example, incorrect access controls or routing can allow unauthorized access or cause messages to be misrouted, dropped, or delayed, leading to failed cross-subnet interactions. This is why the best answer is that misconfiguration can create security gaps and disrupt cross-subnet communication. The other options don’t fit: validator updates aren’t triggered by cross-subnet call settings, and misconfigurations don’t improve throughput—in fact, they typically reduce it—and they do impact operations.