AZ900 Part5

Consider a scenario where Isabella's company wants to expand their IT capabilities without investing in physical infrastructure. Select "Yes" if a public cloud can extend the internal network of their on-premises environment, otherwise select "No".

• Yes

• No

Answer explanation

Overall explanation

The correct answer is "yes".

Enterprises can use public clouds to extend their internal networks. You can extend your network by connecting a virtual network in a public cloud, such as Azure, to your on-premises environment's internal network if your company needs additional resources. This allows you to use both Azure resources and on-premises resources.

 

[Reference]

Public Cloud vs Private Cloud vs Hybrid Cloud | Microsoft Azure

Domain

Describe cloud concepts

Select "Yes" if the following statement is true, otherwise select "No".

 

Henry is considering moving his company's IT infrastructure to a hybrid cloud model. To do this, does he need to move away from their current public cloud setup?

• Yes

• No

Answer explanation

Overall explanation

The correct answer is "No".

It is possible to migrate to a hybrid cloud model from either a public cloud model or a private cloud model. You can choose the migration method according to your company's needs and current cloud model usage. There are three main configurations of a hybrid cloud.

・Hybrid cloud configuration combining public cloud and private cloud

・Hybrid cloud configuration combining on-premises and public cloud

・Hybrid cloud configuration combining multiple public clouds such as Azure and AWS

 

[Reference]

Public Cloud vs Private Cloud vs Hybrid Cloud | Microsoft Azure

Domain

Describe cloud concepts

Isabella, Harper, and Amelia are developing a global e-commerce platform that requires a database to store JSON formatted documents and respond in milliseconds. This database will also be accessed and used simultaneously from multiple regions.

Which database is best for this case?

• Azure Cosmos DB

• Azure Synapse Analytics

• Azure SQL Database

• Azure Cache for Redis

Answer explanation

Overall explanation

Option 1 is the correct answer. Azure Cosmos DB is a fully managed NoSQL database service for modern high-speed application development such as IoT data processing. Azure Cosmos DB can store JSON documents with guaranteed single-digit millisecond response times and 99.999% availability.

Option 2 is incorrect. Azure Synapse Analytics is a fully managed cloud data warehouse. This DB can obtain query results in a short time for terabyte and petabyte class data.

Option 3 is incorrect. Azure SQL Database is a fully managed, intelligent relational cloud database.

Option 4 is incorrect. Azure Cache for Redis. A fast, fully managed in-memory data store. This is not suitable for storing JSON documents.

 

[Reference]

Introduction - Azure Cosmos DB | Microsoft Learn

Domain

Describe Azure architecture and services

Select "Yes" if the following statement is true, otherwise select "No".

 

Lily's Azure resources can only access other resources within the same resource group.

• Yes

• No

Answer explanation

Overall explanation

The correct answer is "No".

A resource group is a container that holds related resources for your Azure solution. By including the resources you want to manage in a resource group, you can control them collectively. Resources belonging to a particular resource group are not restricted from accessing resources in another resource group.

By adding resources that typically share the same lifecycle to the same resource group, they can be easily deployed, updated, and deleted as a group.

[Reference]

Manage resource groups - Azure portal - Azure Resource Manager | Microsoft Learn

Domain

Describe Azure management and governance

Priya is managing a project with multiple Azure resources grouped together. Select "Yes" if the following statement is true, otherwise select "No".

 

Deleting a resource group deletes all resources in the resource group.

• Yes

• No

Answer explanation

Overall explanation

The correct answer is "yes".

Deleting a resource group will delete all resources in the resource group. A resource group is a collection of Azure resources for specified requirements and is a logical container for all Azure resources within an Azure subscription. So when a resource group is deleted, all resources within the resource group are also deleted.

 

[Reference]

Manage resource groups - Azure portal - Azure Resource Manager | Microsoft Learn

Domain

Describe Azure management and governance

Select "Yes" if the following statement is true, otherwise select "No".

 

A resource group can only contain resources from the same Azure region.

• Yes

• No

Answer explanation

Overall explanation

The correct answer is "No".

A resource group can contain resources from multiple Azure regions. On the resource group creation page, you need to enter a suitable resource group name as the resource group and also select a region. In other words, it is necessary to configure a resource group associated with a region. However, a region is only a logical meta-information storage place for a resource group. A resource group can contain resources located in different regions.

[Reference]

Manage resource groups - Azure portal - Azure Resource Manager | Microsoft Learn

Domain

Describe Azure management and governance

Imagine you are a cloud architect like James, and you are tasked with reducing operational costs for your company's Azure infrastructure. Which of the following tools would be the most effective for optimizing Azure costs?

• Azure Monitor

• Storage account

• Azure Advisor

• Resource provider

Answer explanation

Overall explanation

Option 3 is the correct answer. Azure Advisor provides cost advice. Azure Advisor optimizes Azure by identifying idle and underutilized resources to help reduce your overall Azure costs. Azure Advisor analyzes resource configuration and usage statistics to provide a cost-benefit analysis of Azure resources to guide optimal solutions.

 

[Reference]

Reduce service costs using Azure Advisor - Azure Advisor | Microsoft Learn

Domain

Describe Azure management and governance

Select "Yes" if the following statement is true, otherwise select "No".

Public clouds allow only guest users within the company to access resources in the cloud.

• Yes

• No

Answer explanation

Overall explanation

The correct answer is "No".

Public clouds such as Azure can be accessed by guest users from within the company. But they even regular users such as employees can access it, as long as they create an account.

You can also link your Azure account and AD together to grant access to Azure to users who have been given a user ID by your company's AD.

Domain

Describe cloud concepts

Henry's company plans to migrate the host server of their core system to an Azure virtual machine. To ensure critical operations, they must guarantee 99.99 percent availability. What is the minimum number of virtual machines that should be utilized?

• 1

• 2

• 3

• 4

Answer explanation

Overall explanation

Option 2 is the correct answer. The Azure Virtual Machine SLA guarantees 99.99% availability when deploying at least two VMs across two Availability Zones. Therefore, the minimum number of virtual machines is 2.

Microsoft guarantees that API Management Service instances running in the Premium Tier with deployments scaled across two or more availability zones in a region will respond to operations requests in that region at least 99.99% of the time.

 

[Reference]

Add or delete users - Azure Active Directory - Microsoft Entra | Microsoft Learn

Domain

Describe Azure management and governance

Imagine a scenario where a company's data center in one region fails due to a natural disaster. William, the IT manager, needs to ensure that all critical data and applications are quickly restored on another server. Which of the following terms best describes this capability of the cloud?

• Agility

• Disaster recovery

• Elasticity

• Scalability

Answer explanation

Overall explanation

Option 2 is the correct answer. Disaster recovery is a measure to minimize the time required for system recovery in the event of a system outage caused by a natural or man-made disaster. With Azure, you can use Azure Site Recovery to ensure your data is safe in the event of a planned or unplanned outage, and use replication and repairs to keep your apps and workloads online.

The Site Recovery feature replicates workloads on physical and virtual machines (VMs) from a primary site to a secondary location during normal times. In the event of a failure at the primary site, failover to the secondary location will keep the workflow running. You can also failover back to the primary site once it becomes viable again.

 

Option 1 is incorrect. Agility is the ability to quickly respond to changes in the business environment. This is one of the indicators that express the nature of the cloud. In the cloud, applications can be changed and deployed immediately in response to changes in business requirements and additional functions, and the number of servers can be increased or decreased. This is called agility.

Option 3 is incorrect. Elasticity is the ability to automatically adjust performance and functionality in response to different loads. It is a property that can increase the capacity of virtual servers etc. according to the load by using the auto scaling functionality of the cloud.

Option 4 is incorrect. Scalability is the ability to increase or decrease the number of servers and adjust performance on demand/ at will. Compare this with elasticity, which is the ability to scale automatically in response to load.

Domain

Describe cloud concepts