A Company Is Adding Stored Value (Or Gift Card) Capability

question 240

Multiple Choice

A company is adding stored value (or gift card) capability to its highly popular casual gaming website. Users need to be able to trade this value for other users' items on the platform. This would require both users' records be updated as a single transaction, or both users' records to be completely rolled back. Which AWS database options can provide the transactional capability required for this new feature? (Choose two.)

• A) Amazon DynamoDB with operations made with the ConsistentRead parameter set to true
• B) Amazon ElastiCache for Memcached with operations made within a transaction block
• C) Amazon Aurora MySQL with operations made within a transaction block
• D) Amazon DynamoDB with reads and writes made using Transact* operations
• E) Amazon Redshift with operations made within a transaction block.

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Definitions:

Sensory Memory

A very short-term type of memory that holds sensory information, allowing it to be experienced just long enough to be processed further.

Partial Reports

A method in cognitive psychology where participants are asked to recall or recognize a subset of the presented information.

Visually Presented

Something shown or displayed through visual means, such as images, diagrams, or videos.

Suffix Effect

A phenomenon where the presence of an extraneous sound at the end of a list can impair recall of the final items, relevant in studies of memory and auditory processing.