Microsoft Azure Architect Design (AZ-301) Practice Exam

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What type of data storage solution is recommended to minimize costs while ensuring REST access and geo-replication?

  1. An Azure SQL Database elastic database pool with active geo-replication

  2. Tables in an Azure Storage account with geo-redundant storage (GRS)

  3. Tables in an Azure Storage account with read-access geo-redundant storage (RA-GR)

  4. An Azure SQL database with active geo-replication

The correct answer is: Tables in an Azure Storage account with read-access geo-redundant storage (RA-GR)

Using tables in an Azure Storage account with read-access geo-redundant storage (RA-GR) is a highly cost-effective solution for minimizing expenses while ensuring that the data is accessible via REST and is geo-replicated. RA-GR offers geographic replication of data to another Azure region, which allows for durability and high availability of your data in case of a regional outage. One of the key advantages of RA-GR is that it not only replicates the data but also allows read access to the replicated data in the secondary region. This means that applications can continue to read data even if the primary region becomes unavailable, thereby enhancing the resilience of applications that depend on real-time data access. This solution is particularly advantageous for scenarios where the data is primarily read-heavy, as it provides access to the data with minimal cost. The combination of cost savings, REST access through Azure Storage, and the benefits of geo-replication make this option highly suitable for many applications. Options involving Azure SQL Database with active geo-replication may provide strong consistency and better transactional support but typically come at a higher cost, making them less suitable for a cost-minimization goal compared to Azure Storage account solutions.

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