A Developer Has Discovered That an Application Responsible for Processing

question 186

Multiple Choice

A Developer has discovered that an application responsible for processing messages in an Amazon SQS queue is routinely falling behind. The application is capable of processing multiple messages in one execution, but is only receiving one message at a time. What should the Developer do to increase the number of messages the application receives?

• A) Call the ChangeMessageVisibility API for the queue and set MaxNumberOfMessages to a value greater than the default of 1.
• B) Call the AddPermission API to set MaxNumberOfMessages for the ReceiveMessage action to a value greater than the default of 1.
• C) Call the ReceiveMessage API to set MaxNumberOfMessages to a value greater than the default of 1.
• D) Call the SetQueueAttributes API for the queue and set MaxNumberOfMessages to a value greater than the default of 1.

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Definitions:

Diazomethane

A highly reactive, carcinogenic organic compound employed in methylating agents and as a precursor to carbenes; characterized by the formula CH2N2.

Carbene

A highly reactive molecule containing a carbon atom with two nonbonded electrons and bonded to two atoms typically forming a divalent species.

Relative Reactivity

A comparison of the reactivity rates of different substances under the same conditions, indicating how easily one substance reacts relative to another.

Secondary Hydrogens

Hydrogen atoms attached to a carbon atom bonded to two other carbon atoms.