Top Azure Interview Questions.

 

1. What are the different types of services offered in the cloud?

IAAS VS PAAS VS SAAS

2. What is cloud computing?

Explanation: It is the use of servers on the internet to “store”, “manage” and “process” data. The difference is, instead of using your own servers, you are using someone else’s servers to do your task, paying them for the amount of time you use it for.

3. What are the different cloud deployment models?

Explanation: Following are the three cloud deployment models:

Public Cloud: The infrastructure is owned by your cloud provider and the server that you are using could be a multi-tenant system.

Private Cloud: The infrastructure is owned by you or your cloud provider gives you that service exclusively. For eg: Hosting your website on your servers, or hosting your website with the cloud provider on a dedicated server.

Hybrid Cloud: When you use both Public Cloud, and Private Cloud together, it is called Hybrid Cloud. For Example: Using your in-house servers for confidential data, and the public cloud for hosting your company’s public-facing website. This type of setup would be a hybrid cloud.

4. I have some private servers on my premises, also I have distributed some of my workload on the public cloud, what is this architecture called?

1. Virtual Private Network
2. Private Cloud
3. Virtual Private Cloud
4. Hybrid Cloud

Answer: D. Hybrid Cloud

Explanation: This type of architecture would be a hybrid cloud. Why? Because we are using both, the public cloud, and on-premises servers i.e the private cloud. To make this hybrid architecture easy to use, wouldn’t it be better if your private and public cloud were all on the same network (virtually). This is established by including your public cloud servers in a virtual private cloud and connecting the virtual cloud with your on-premise servers using a VPN (Virtual Private Network).

Section 2: Basic Azure Questions and Answers for Freshers

5. What is Microsoft Azure and why is it used?

Explanation: As discussed above, the companies which provide the cloud service are called the Cloud Providers. There are a lot of cloud providers out there, out of them one is Microsoft Azure. It is used for accessing Microsoft’s infrastructure for cloud.

6. Which service in Azure is used to manage resources in Azure?

1. Application Insights
2. Azure Resource Manager
3. Azure Portal
4. Log Analytics

Answer: B Azure Resource Manager

Explanation: Azure Resource Manager is used to “manage” infrastructures which involve a no. of azure services. It can be used to deploy, manage and delete all the resources together using a simple JSON script.

7. Which of the following web applications can be deployed with Azure?

1. ASP.NET
2. PHP
3. WCF
4. All of the mentioned

Answer: D All of the mentioned

Explanation: Microsoft also has released SDKs for both Java and Ruby to allow applications written in those languages to place calls to the Azure Service Platform API to the AppFabric Service.

Section 3: Azure Interview Questions and Answers for Experienced Professional

8. What are Roles and why do we use them?

Explanation: Roles are nothing servers in layman terms. These servers are managed, load balanced, Platform as a Service virtual machines that work together to achieve a common goal.

There are 3 types of roles in Microsoft Azure:

• Web Role
• Worker Role
• VM  Role

Let’s discuss each of these roles in detail:

• Web Role – A web role is basically used to deploy a website, using languages supported by the IIS platform like, PHP, .NET etc. It is configured and customized to run web applications.
• Worker Role – A worker role is more like an help to the Web role, it used to execute background processes unlike the Web Role which is used to deploy the website.
• VM Role – The VM role is used by a user to schedule tasks and other windows services. This role can be used to customize the machines on which the web and worker role is running.

9. A _________ role is a virtual machine instance running Microsoft IIS Web server that can accept and respond to HTTP or HTTPS requests.

1. Web
2. Server
3. Worker
4. Client

Answer: A. Web 

Explanation: The answer should be Web Roles, there are no roles such as Server or Client roles. Also, Worker roles can only communicate with Azure Storage or through direct connections to clients.

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10. Is it possible to create a Virtual Machine using Azure Resource Manager in a Virtual Network that was created using classic deployment?

Explanation: This is not supported. You cannot use Azure Resource Manager to deploy a virtual machine into a virtual network that was created using classic deployment.

11. What are virtual machine scale sets in Azure?

Explanation: Virtual machine scale sets are Azure compute resources that you can use to deploy and manage a set of identical VMs. With all the VMs configured the same, scale sets are designed to support true autoscale, and no pre-provisioning of VMs is required. So it’s easier to build large-scale services that target big compute, big data, and containerized workloads.

12. Are data disks supported within scale sets?

Explanation: Yes. A scale set can define an attached data disk configuration that applies to all VMs in the set. Other options for storing data include:

• Azure files (SMB shared drives)
• OS drive
• Temp drive (local, not backed by Azure Storage)
• Azure data service (for example, Azure tables, Azure blobs)
• External data service (for example, remote database)

13. What is an Availability Set?

Explanation: An availability set is a logical grouping of VMs that allows Azure to understand how your application is built to provide redundancy and availability. It is recommended that two or more VMs are created within an availability set to provide for a highly available application and to meet the 99.95% Azure SLA. When a single VM is used with Azure Premium Storage, the Azure SLA applies for unplanned maintenance events.

Apart from this Azure Interview Questions Blog, if you want to get trained from professionals on this technology, you can opt for a structured training from edureka! Click below to know more.

14. What are Fault Domains?

Explanation: A fault domain is a logical group of underlying hardware that share a common power source and network switch, similar to a rack within an on-premise data-centers. As you create VMs within an availability set, the Azure platform automatically distributes your VMs across these fault domains. This approach limits the impact of potential physical hardware failures, network outages, or power interruptions.

15. What are Update Domains?

Explanation: An update domain is a logical group of underlying hardware that can undergo maintenance or can be rebooted at the same time. As you create VMs within an availability set, the Azure platform automatically distributes your VMs across these update domains. This approach ensures that at least one instance of your application always remains running as the Azure platform undergoes periodic maintenance. The order of update domains being rebooted may not proceed sequentially during planned maintenance, but only one update domain is rebooted at a time.

16. What are Network Security Groups?

Explanation: A network security group (NSG) contains a list of Access Control List (ACL) rules that allow or deny network traffic to subnets, NICs, or both. NSGs can be associated with either subnets or individual NICs connected to a subnet. When an NSG is associated with a subnet, the ACL rules apply to all the VMs in that subnet. In addition, traffic to an individual NIC can be restricted by associating an NSG directly to a NIC.

17. Do scale sets work with Azure availability sets?

Explanation: Yes. A scale set is an implicit availability set with 5 fault domains and 5 update domains. Scale sets of more than 100 VMs span multiple placement groups, which are equivalent to multiple availability sets. An availability set of VMs can exist in the same virtual network as a scale set of VMs. A common configuration is to put control node VMs (which often require unique configuration) in an availability set and put data nodes in the scale set.

Q1. Which Azure service should you use to store certificates?

1. Azure Security Center
2. an Azure Storage account
3. Azure Key Vault
4. Azure Information Protection

You should use Azure Key Vault to store certificates. Key Vault is a secure, cloud-based service that helps you manage the secrets and keys used in your applications, such as certificates and connection strings. It allows you to securely store and manage sensitive information, and makes it easy to use this information in your applications. With Key Vault, you can store and manage your certificates in a secure and compliant manner, and access them programmatically as needed.

Q2. You have a virtual machine named VM1 that runs Windows Server 2016. VM1 is in the East US Azure region. Which Azure service should you use from the Azure portal to view service failure notifications that can affect the availability of VM1? Azure Service Fabric Azure Monitor Azure virtual machines Azure Advisor

Ans- You should use Azure Monitor to view service failure notifications that can affect the availability of VM1. Azure Monitor is a monitoring service in Azure that provides data and operational insights for various Azure resources, including virtual machines. It enables you to view the health, performance, and availability of your Azure resources, and to receive alerts when potential issues are detected. By using Azure Monitor, you can monitor the health and availability of VM1, and receive notifications if there are any service failures that could affect the availability of the virtual machine.

Q- Which Azure storage solution provides native support for POSIX-compliant access control lists (ACLs)? Azure table storage Azure Files Azure Queue storage Azure Data Lake Storage

Azure Files provides native support for POSIX-compliant access control lists (ACLs). Azure Files is a managed file storage service that enables you to create and manage file shares in Azure that can be accessed from anywhere using the Server Message Block (SMB) protocol, or from on-premises using the Network File System (NFS) protocol. Azure Files supports POSIX-compliant ACLs, which allows you to set fine-grained permissions on files and directories in your file shares. This makes it easy to manage access to your files, and ensures that only authorized users can access your data.

Q4. What is a benefit of hosting a database on Azure SQL managed instance as compared to an Azure SQL database?

Native support for cross-database queries and transactions is a benefit of hosting a database on Azure SQL managed instance as compared to an Azure SQL database. Managed instances support most of the same features and capabilities as on-premises SQL Server instances, including support for cross-database transactions and queries. This means that you can perform transactions that span multiple databases on a managed instance, and use T-SQL statements to query data from multiple databases on the same instance. This can be useful if you need to perform complex queries that involve data from multiple databases, or if you need to ensure that transactions involving data from multiple databases are performed atomically.

Q- Your company plans to deploy various Azure App Service instances that will use Azure SQL databases. The App Service instances will be deployed at the same time as the Azure SQL databases.

The company has a regulatory requirement to deploy the App Service instances only to specific Azure regions. The resources for the App Service instances must reside in the same region.

You need to recommend a solution to meet the regulatory requirement.

Solution: You recommend using the Regulatory compliance dashboard in Microsoft Defender for Cloud.

Does this meet the goal?

Ans- No, the solution does not meet the goal. The Regulatory compliance dashboard in Microsoft Defender for Cloud is a tool that helps you assess and address regulatory compliance requirements for your Azure resources. It does not provide a way to specify or enforce geographic constraints on the deployment of Azure resources.

To meet the regulatory requirement to deploy the App Service instances only to specific Azure regions, you can use Azure Resource Manager to create resource groups and specify the location for the resource group. You can then deploy the App Service instances and Azure SQL databases to the same resource group and location. This will ensure that the resources for the App Service instances are deployed to the required Azure region and are kept together in the same resource group.

IAAS	PAAS	SAAS
In infrastructure as a service, you get the raw hardware from your cloud provider as a service i.e you get a server that you can configure with your own will.	Platform as a Service gives you a platform to publish without giving access to the underlying software or OS.	You get the software as a service in Azure, i.e no infrastructure, no platform, simple software that you can use without purchasing it.
For example Azure VM, and Amazon EC2.	For example Web Apps, Mobile Apps in Azure.	For example: when you launch a VM on Azure, you are not buying the OS, you are basically renting it for the time you will be running that instance.