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Microsoft AZ-305 Exam

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Question 171
You are planning a storage solution. The solution must meet the following requirements:
- Support at least 500 requests per second.
- Support a large image, video, and audio streams.
Which type of Azure Storage account should you provision?
A. standard general-purpose v2
B. premium block blobs
C. premium page blobs
D. premium file shares
Use Azure Blobs if you want your application to support streaming and random access scenarios.
It's ideal for applications that require high transaction rates or consistent low-latency storage.
Incorrect:
Not A: Standard storage accounts has a default maximum request rate per storage account 20,000 requests per second1, but is not optimized for video and audio streams.
Not C: Page blobs is best suited for random reads and random writes.
Not D: FileStorage storage accounts (premium) has a maximum concurrent request rate of 100,000 IOPS.
Maximum file size is 4 TB, but is not optimized for video and audio streams.
Reference:
https://docs.microsoft.com/en-us/azure/storage/common/storage-introduction
https://docs.microsoft.com/en-us/azure/storage/files/storage-files-scale-targets

Question 172
You need to recommend a data storage solution that meets the following requirements:
- Ensures that applications can access the data by using a REST connection
- Hosts 20 independent tables of varying sizes and usage patterns
- Automatically replicates the data to a second Azure region
- Minimizes costs
What should you recommend?
A. an Azure SQL Database elastic pool that uses active geo-replication
B. tables in an Azure Storage account that use geo-redundant storage (GRS)
C. tables in an Azure Storage account that use read-access geo-redundant storage (RA-GRS)
D. an Azure SQL database that uses active geo-replication
The Table service offers structured storage in the form of tables. The Table service API is a REST API for working with tables and the data that they contain.
Geo-redundant storage (GRS) has a lower cost than read-access geo-redundant storage (RA-GRS).
Reference:
https://docs.microsoft.com/en-us/rest/api/storageservices/table-service-rest-api
https://docs.microsoft.com/en-us/azure/storage/common/geo-redundant-design

Question 173
HOTSPOT -
You are designing a software as a service (SaaS) application that will enable Azure Active Directory (Azure AD) users to create and publish online surveys. The
SaaS application will have a front-end web app and a back-end web API. The web app will rely on the web API to handle updates to customer surveys.
You need to design an authorization flow for the SaaS application. The solution must meet the following requirements:
- To access the back-end web API, the web app must authenticate by using OAuth 2 bearer tokens.
- The web app must authenticate by using the identities of individual users.
What should you include in the solution? To answer, select the appropriate options in the answer area.
NOTE: Each correct selection is worth one point.
Hot Area:
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Image AZ-305_173R.jpg related to the Microsoft AZ-305 Exam
Box 1: Azure AD -
The Azure AD server issues tokens (access & refresh token). See step 5 below in graphic.
OAuth 2.0 authentication with Azure Active Directory.
The OAuth 2.0 is the industry protocol for authorization. It allows a user to grant limited access to its protected resources. Designed to work specifically with
Hypertext Transfer Protocol (HTTP), OAuth separates the role of the client from the resource owner. The client requests access to the resources controlled by the resource owner and hosted by the resource server (here the Azure AD server). The resource server issues access tokens with the approval of the resource owner. The client uses the access tokens to access the protected resources hosted by the resource server.
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Box 2: A web API -
Delegated access is used.
The bearer token sent to the web API contains the user identity.
The web API makes authorization decisions based on the user identity.
Reference:
https://docs.microsoft.com/en-us/azure/active-directory/fundamentals/auth-oauth2
https://docs.microsoft.com/lb-lu/azure/architecture/multitenant-identity/web-api

Question 174
HOTSPOT -
You plan to create an Azure environment that will contain a root management group and 10 child management groups. Each child management group will contain five Azure subscriptions. You plan to have between 10 and 30 resource groups in each subscription.
You need to design an Azure governance solution. The solution must meet the following requirements:
- Use Azure Blueprints to control governance across all the subscriptions and resource groups.
- Ensure that Blueprints-based configurations are consistent across all the subscriptions and resource groups.
- Minimize the number of blueprint definitions and assignments.
What should you include in the solution? To answer, select the appropriate options in the answer area.
NOTE: Each correct selection is worth one point.
Hot Area:
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Image AZ-305_174R.jpg related to the Microsoft AZ-305 Exam
Box 1. The root management group
When creating a blueprint definition, you'll define where the blueprint is saved. Blueprints can be saved to a management group or subscription that you have
Contributor access to. If the location is a management group, the blueprint is available to assign to any child subscription of that management group.
The root management group is built into the hierarchy to have all management groups and subscriptions fold up to it. This root management group allows for global policies and Azure role assignments to be applied at the directory level.
Box 2. The root management group
Reference:
https://docs.microsoft.com/en-us/azure/governance/management-groups/overview
https://docs.microsoft.com/en-us/azure/governance/blueprints/overview

Question 175
DRAG DROP -
You are designing a virtual machine that will run Microsoft SQL Server and contain two data disks. The first data disk will store log files, and the second data disk will store data. Both disks are P40 managed disks.
You need to recommend a host caching method for each disk. The method must provide the best overall performance for the virtual machine while preserving the integrity of the SQL data and logs.
Which host caching method should you recommend for each disk? To answer, drag the appropriate methods to the correct disks. Each method may be used once, more than once, or not at all. You may need to drag the split bar between panes or scroll to view content.
NOTE: Each correct selection is worth one point.
Select and Place:
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Image AZ-305_175R.jpg related to the Microsoft AZ-305 Exam
Box 1: None -
No data disk caching for the Log files.
Box 2: ReadOnly -
Guidelines to optimize performance for your SQL Server on Azure Virtual Machines (VMs) include:
Set host caching to read-only for data file disks.
Set host caching to none for log file disks.
Reference:
https://docs.microsoft.com/en-us/azure/azure-sql/virtual-machines/windows/performance-guidelines-best-practices-storage


Question 176
You are designing a solution that calculates 3D geometry from height-map data.
You need to recommend a solution that meets the following requirements:
- Performs calculations in Azure.
- Ensures that each node can communicate data to every other node.
- Maximizes the number of nodes to calculate multiple scenes as fast as possible.
Minimizes the amount of effort to implement the solution.
Which two actions should you include in the recommendation? Each correct answer presents part of the solution.
NOTE: Each correct selection is worth one point.
A. Enable parallel file systems on Azure.
B. Create a render farm that uses virtual machines.
C. Create a render farm that uses virtual machine scale sets.
D. Create a render farm that uses Azure Batch.
E. Enable parallel task execution on compute nodes.
Multi-instance tasks allow you to run an Azure Batch task on multiple compute nodes simultaneously. These tasks enable high performance computing scenarios like Message Passing Interface (MPI) applications in Batch.
You configure compute nodes for parallel task execution at the pool level.
Azure Batch allows you to set task slots per node up to (4x) the number of node cores.
Reference:
https://docs.microsoft.com/en-us/azure/batch/batch-mpi
https://docs.microsoft.com/en-us/azure/batch/batch-parallel-node-tasks#enable-parallel-task-execution

Question 177
You have an on-premises application that consumes data from multiple databases. The application code references database tables by using a combination of the server, database, and table name.
You need to migrate the application data to Azure.
To which two services can you migrate the application data to achieve the goal? Each correct answer presents a complete solution.
NOTE: Each correct selection is worth one point.
A. SQL Server Stretch Database
B. SQL Server on an Azure virtual machine
C. Azure SQL Database
D. Azure SQL Managed Instance
Cross-database queries are supported by SQL Server, for example on an Azure virtual machine, and also supported by an Azure SQL Managed Instance.
Reference:
https://techcommunity.microsoft.com/t5/azure-database-support-blog/cross-database-queries-between-azure-sql-database-and-managed/ba- p/2706670

Question 178
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?
A. Azure SQL Managed Instance Business Critical
B. Azure SQL Managed Instance General Purpose
C. Azure SQL Database Business Critical
D. Azure SQL Database Serverless
Azure SQL Database Serverless meets the requirements and is less expensive than Azure SQL Database Business Critical.
Note: General Purpose service tier zone redundant availability.
Zone-redundant configuration for the general purpose service tier is offered for both serverless and provisioned compute.
This configuration utilizes Azure Availability Zones "‰to replicate databases across multiple physical locations within an Azure region."‰By selecting zone-redundancy, you can make your"‰new and existing serverless and provisioned general"‰purpose single databases and elastic pools resilient to a much larger set of failures, including catastrophic datacenter outages, without any changes of the application logic.
Incorrect:
Not A, not B: Zone-redundant configuration is not available in SQL Managed Instance.
Not C: Azure SQL Database Business Critical is more expensive than Azure SQL Database Serverless.
Note: Premium and Business Critical service tiers use the Premium availability model, which integrates compute resources (sqlservr.exe process) and storage
(locally attached SSD) on a single node. High availability is achieved by replicating both compute and storage to additional nodes creating a three to four-node cluster.
Reference:
https://docs.microsoft.com/en-us/azure/azure-sql/database/high-availability-sla

Question 179
You have an Azure web app that uses an Azure key vault named KeyVault1 in the West US Azure region.
You are designing a disaster recovery plan for KeyVault1.
You plan to back up the keys in KeyVault1.
You need to identify to where you can restore the backup.
What should you identify?
A. any region worldwide
B. the same region only
C. KeyVault1 only
D. the same geography only
Using the backup and restore commands has two limitations:
* You can't back up a key vault in one geography and restore it into another geography.
* The backup command backs up all versions of each secret.
Incorrect:
Not A: Azure Key Vault does not allow you to move a key vault from one region to another. You can, however, create a key vault in the new region, manually copy each individual key, secret, or certificate from your existing key vault to the new key vault, and then remove the original key vault.
Reference:
https://docs.microsoft.com/en-us/azure/key-vault/general/move-region

Question 180
You have an on-premises line-of-business (LOB) application that uses a Microsoft SQL Server instance as the backend.
You plan to migrate the on-premises SQL Server instance to Azure virtual machines.
You need to recommend a highly available SQL Server deployment that meets the following requirements:
- Minimizes costs
Minimizes failover time if a single server fails
What should you include in the recommendation?
A. an Always On availability group that has premium storage disks and a virtual network name (VNN)
B. an Always On Failover Cluster Instance that has a virtual network name (VNN) and a standard file share
C. an Always On availability group that has premium storage disks and a distributed network name (DNN)
D. an Always On Failover Cluster Instance that has a virtual network name (VNN) and a premium file share
Always On availability groups on Azure Virtual Machines are similar to Always On availability groups on-premises, and rely on the underlying Windows Server
Failover Cluster.
If you deploy your SQL Server VMs to a single subnet, you can configure a virtual network name (VNN) and an Azure Load Balancer, or a distributed network name (DNN) to route traffic to your availability group listener.
There are some behavior differences between the functionality of the VNN listener and DNN listener that are important to note:
* Failover time: Failover time is faster when using a DNN listener since there is no need to wait for the network load balancer to detect the failure event and change its routing.
* Etc.
Incorrect:
Not B, not D: Migrate to an Always On availability group, not an Always on Failover cluster Instance.
Reference:
https://docs.microsoft.com/en-us/azure/azure-sql/virtual-machines/windows/availability-group-overview