DVA-C02 Troubleshooting and Optimization Practice Question

Answer analysis

Option-by-option breakdown

For each option: why learners choose it and why it is or isn't the right answer here.

• ✓

  Another deployment is currently in progress for the same Lambda function.

  Why this is correct

  AWS Lambda enforces serialization of updates to a function's code or configuration to maintain consistency. If an API call like `UpdateFunctionCode` or `UpdateFunctionConfiguration` is initiated while another update operation is already in progress for the same function, the subsequent call will fail. This contention for the resource's state results in a `ResourceConflictException`, preventing race conditions and ensuring the function's configuration remains coherent.

• ✗

  The Lambda function code exceeds the maximum allowed size.

  Why it's wrong here

  AWS Lambda imposes specific limits on the size of deployment packages, both zipped and unzipped. If the code package being uploaded for the Lambda function exceeds these predefined maximum size limits, the Lambda service will reject the deployment. This type of error typically manifests as an `InvalidParameterValueException`, indicating that a provided input parameter (the code package) is outside the acceptable range, rather than a conflict over resource availability.

• ✗

  The Lambda function has an alias that conflicts with the version number.

  Why it's wrong here

  Lambda aliases are distinct pointers that reference specific function versions, such as `$LATEST` or a numbered version. They provide a stable endpoint for invoking a function without needing to update client configurations when new versions are deployed. The creation or modification of an alias does not directly interfere with the process of creating or updating a new function version, nor do alias names conflict with system-generated version numbers, thus a `ResourceConflictException` is not expected in this scenario.

• ✗

  The IAM role associated with the Lambda function does not have sufficient permissions.

  Why it's wrong here

  If the IAM role used by the developer to perform the deployment operation (e.g., `lambda:UpdateFunctionCode`) lacks the necessary permissions, the AWS API will explicitly deny the request. This authorization failure results in an `AccessDeniedException`, clearly indicating that the principal attempting the action does not have the required privileges. This is fundamentally different from a `ResourceConflictException`, which signifies that the resource itself is temporarily unavailable for modification due to an ongoing operation.