DP-203 Azure Data Engineer Associate Real-Time Analytics and Streaming Flashcards

Which Azure service is the primary entry point for ingesting large volumes of real-time event streaming data?

Answer: Azure Event Hubs

Azure Event Hubs is a big data streaming platform and event ingestion service capable of receiving and processing millions of events per second.

In Azure Event Hubs, what is a Consumer Group?

Answer: An independent view of the event stream allowing multiple consumers to read independently

A Consumer Group provides an independent, isolated view of the event stream so multiple consumer applications can each read the stream at their own pace and offset.

Which Azure service is used to perform SQL-based real-time analytics on streaming data from Event Hubs or IoT Hub?

Answer: Azure Stream Analytics

Azure Stream Analytics is a fully managed, real-time analytics service that processes streaming data using a SQL-like query language with built-in windowing functions.

What is a Tumbling Window in Azure Stream Analytics?

Answer: A fixed-size, non-overlapping, contiguous time segment

A Tumbling Window in Stream Analytics divides time into fixed, non-overlapping segments and aggregates events that fall within each segment.

Which Event Hubs feature allows you to automatically capture streaming data to Azure Blob Storage or Data Lake Storage?

Answer: Event Hubs Capture

Event Hubs Capture automatically delivers the streaming data to an Azure Blob Storage or Azure Data Lake Storage account in Avro format at a specified time or size interval.

In Azure Stream Analytics, what is the purpose of a Reference Data input?

Answer: To supply slowly changing lookup data joined against the event stream

Reference Data in Stream Analytics is static or slowly changing data stored in Blob Storage or SQL Database that can be joined with the live event stream for enrichment.