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    PracticeAzure Solutions Architect Expert (AZ-305)Azure Solutions Architect Expert AZ-305 Practice Exam 4Question 21
    Medium1 markMultiple Choice
    Domain 2.1: Relational Data StorageDatabasePerformanceSQL

    AZ-305 · Question 21 · Domain 2.1: Relational Data Storage

    A retail company has an e-commerce application backed by an Azure SQL Database.

    During the holiday shopping season, read-heavy reporting queries run by the analytics team are causing performance degradation for customer transactions. You need to design a solution to isolate the reporting workload from the transactional workload without changing the application code for the transactional system.

    Which feature should you implement?

    Answer options:

    A.

    Active Geo-Replication

    B.

    Read Scale-Out

    C.

    Azure Cache for Redis

    D.

    Elastic Pools

    How to approach this question

    Look for 'isolate reporting workload' and 'no code changes for transactional system'. Read Scale-Out routes read-intent connections to a replica.

    Full Answer

    B.Read Scale-Out✓ Correct
    Read Scale-Out
    For Azure SQL Database Premium and Business Critical tiers, Read Scale-Out is built-in. It leverages the Always On high availability architecture by directing read-only connections (using `ApplicationIntent=ReadOnly` in the connection string of the reporting tool) to one of the secondary replicas. This isolates the heavy reporting queries from the primary replica handling customer transactions.

    Common mistakes

    Choosing Active Geo-Replication. While it works, Read Scale-Out is free (included in the tier) and designed specifically for this local performance isolation scenario.
    Question 20All questionsQuestion 22

    Practice the full Azure Solutions Architect Expert AZ-305 Practice Exam 4

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