A Company Is Building a Stock Trading Application That Requires

question 152

Multiple Choice

A company is building a stock trading application that requires sub-millisecond latency in processing trading requests. Amazon DynamoDB is used to store all the trading data that is used to process each request. After load testing the application, the development team found that due to data retrieval times, the latency requirement is not satisfied. Because of sudden high spikes in the number of requests, DynamoDB read capacity has to be significantly over-provisioned to avoid throttling. What steps should be taken to meet latency requirements and reduce the cost of running the application?

• A) Add Global Secondary Indexes for trading data.
• B) Store trading data in Amazon S3 and use Transfer Acceleration.
• C) Add retries with exponential back-off for DynamoDB queries
• D) Use DynamoDB Accelerator to cache trading data.

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Definitions:

CSR Strategies

Corporate Social Responsibility strategies involve plans and actions undertaken by a company to manage its impacts on society, the economy, and the environment in a responsible manner.

Responsibilities

Duties or obligations that individuals or organizations are expected to fulfill or carry out in their roles.

Proactive

Taking initiative by acting in advance of future situations rather than just reacting, to bring about positive change.

Ethics Intensity

The degree of importance given to the ethical dimension of decisions and actions.