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Free AZ-305 Exam Braindumps (page: 25)

Page 24 of 67
PDF with 319 Questions

You have an app named App1 that uses two on-premises Microsoft SQL Server databases named DB1 and DB2.

You plan to migrate DB1 and DB2 to Azure

You need to recommend an Azure solution to host DB1 and DB2. The solution must meet the following requirements:

-Support server-side transactions across DB1 and DB2.
-Minimize administrative effort to update the solution.

What should you recommend?

  1. two Azure SQL databases in an elastic pool
  2. two databases on the same Azure SQL managed instance
  3. two databases on the same SQL Server instance on an Azure virtual machine
  4. two Azure SQL databases on different Azure SQL Database servers

Answer(s): B

Explanation:

Elastic database transactions for Azure SQL Database and Azure SQL Managed Instance allow you to run transactions that span several databases.

SQL Managed Instance enables system administrators to spend less time on administrative tasks because the service either performs them for you or greatly simplifies those tasks.


Reference:

https://docs.microsoft.com/en-us/azure/azure-sql/database/elastic-transactions-overview?view=azuresql



You need to design a highly available Azure SQL database that meets the following requirements:

-Failover between replicas of the database must occur without any data loss.
-The database must remain available in the event of a zone outage.
-Costs must be minimized.

Which deployment option should you use?

  1. Azure SQL Database Hyperscale
  2. Azure SQL Database Premium
  3. Azure SQL Database Basic
  4. Azure SQL Managed Instance General Purpose

Answer(s): B

Explanation:

Azure SQL Database Premium tier supports multiple redundant replicas for each database that are automatically provisioned in the same datacenter within a region. This design leverages the SQL Server AlwaysON technology and provides resilience to server failures with 99.99% availability SLA and RPO=0.
With the introduction of Azure Availability Zones, we are happy to announce that SQL Database now offers built-in support of Availability Zones in its Premium service tier.

Incorrect:
Not A: Hyperscale is more expensive than Premium.
Not C: Need Premium for Availability Zones.
Not D: Zone redundant configuration that is free on Azure SQL Premium is not available on Azure SQL Managed Instance.


Reference:

https://azure.microsoft.com/en-us/blog/azure-sql-database-now-offers-zone-redundant-premium-databases-and-elastic-pools/



HOTSPOT (Drag and Drop is not supported)
You are planning an Azure Storage solution for sensitive data. The data will be accessed daily. The dataset is less than 10 GB.

You need to recommend a storage solution that meets the following requirements:

-All the data written to storage must be retained for five years.
-Once the data is written, the data can only be read. Modifications and deletion must be prevented.
-After five years, the data can be deleted, but never modified.
-Data access charges must be minimized.

What should you recommend? To answer, select the appropriate options in the answer area.

NOTE: Each correct selection is worth one point.

  1. See Explanation section for answer.

Answer(s): A

Explanation:



Box 1: General purpose v2 with Hot access tier for blobs
Note:
* All the data written to storage must be retained for five years.
* Data access charges must be minimized

Hot tier has higher storage costs, but lower access and transaction costs.

Incorrect:
Not Archive: Lowest storage costs, but highest access, and transaction costs.
Not Cool: Lower storage costs, but higher access and transaction costs.

Box 2: Storage account resource lock
As an administrator, you can lock a subscription, resource group, or resource to prevent other users in your organization from accidentally deleting or modifying critical resources. The lock overrides any permissions the user might have.


Reference:

https://docs.microsoft.com/en-us/azure/storage/blobs/access-tiers-overview
https://docs.microsoft.com/en-us/azure/azure-resource-manager/management/lock-resources



HOTSPOT (Drag and Drop is not supported)
You are designing a data storage solution to support reporting.

The solution will ingest high volumes of data in the JSON format by using Azure Event Hubs. As the data arrives, Event Hubs will write the data to storage. The solution must meet the following requirements:

-Organize data in directories by date and time.
-Allow stored data to be queried directly, transformed into summarized tables, and then stored in a data warehouse.
-Ensure that the data warehouse can store 50 TB of relational data and support between 200 and 300 concurrent read operations.

Which service should you recommend for each type of data store? To answer, select the appropriate options in the answer area.

NOTE: Each correct selection is worth one point.

  1. See Explanation section for answer.

Answer(s): A

Explanation:



Box 1: Azure Data Lake Storage Gen2
Azure Data Explorer integrates with Azure Blob Storage and Azure Data Lake Storage (Gen1 and Gen2), providing fast, cached, and indexed access to data stored in external storage. You can analyze and query data without prior ingestion into Azure Data Explorer. You can also query across ingested and uningested external data simultaneously.

Azure Data Lake Storage is optimized storage for big data analytics workloads.
Use cases: Batch, interactive, streaming analytics and machine learning data such as log files, IoT data, click streams, large datasets

Box 2: Azure SQL Database Hyperscale
Azure SQL Database Hyperscale is optimized for OLTP and high throughput analytics workloads with storage up to 100TB.

A Hyperscale database supports up to 100 TB of data and provides high throughput and performance, as well as rapid scaling to adapt to the workload requirements. Connectivity, query processing, database engine features, etc. work like any other database in Azure SQL Database.

Hyperscale is a multi-tiered architecture with caching at multiple levels. Effective IOPS will depend on the workload.
Compare to:
General purpose: 500 IOPS per vCore with 7,000 maximum IOPS
Business critical: 5,000 IOPS with 200,000 maximum IOPS

Incorrect:
* Azure Synapse Analytics Dedicated SQL pool.
Max database size: 240 TB
A maximum of 128 concurrent queries will execute and remaining queries will be queued.


Reference:

https://docs.microsoft.com/en-us/azure/data-explorer/data-lake-query-data
https://docs.microsoft.com/en-us/azure/azure-sql/database/service-tier-hyperscale
https://docs.microsoft.com/en-us/azure/synapse-analytics/sql-data-warehouse/sql-data-warehouse-service-capacity-limits






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