An API client opens a new TCP connection for every request and sees intermittent outbound failures during bursts. NAT Gateway is in use. What should be investigated?

Choose the single best answer.

A.SNAT port pressure and connection reuse, along with actual egress capacity
B.Only health probes, assuming their success proves unlimited egress concurrency
C.Only inbound NSG allow rules, assuming every outbound timeout is an ingress failure
D.Only DNS TTL, assuming longer caching creates translation ports

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✓ Correct answer

SNAT port pressure and connection reuse, along with actual egress capacity

Connection churn and concurrency can exhaust translation capacity, so reuse and measured port pressure matter. Inbound permissions alone do not characterize SNAT, DNS caching does not allocate ports, and probes cannot prove unlimited connection capacity. Source guide: PDF page(s) 55-56.

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