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AWS Certified CloudOps Engineer Associate SOA-C03 Practice Question

An application is fronted by Amazon CloudFront with an Application Load Balancer origin. Users sporadically complain of 504 Gateway Timeout errors. You inspect a recent CloudFront access log and notice multiple records where sc-status is 504, x-edge-result-type is Error, and x-edge-response-result-type is Error. Based on these fields, what do the log entries reveal about the failure?

  • The object was evicted from the cache, causing a cache miss that was later served successfully.

  • CloudFront delivered the cached object, but the viewer closed the connection early, generating a client-side error.

  • The TLS handshake between the viewer and CloudFront failed before any request reached the origin.

  • CloudFront failed to receive a response from the origin within the allowed time or could not connect to it.

AWS Certified CloudOps Engineer Associate SOA-C03
Networking and Content Delivery
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