Azure Interview Questions and Answers (2023)

An update domain is a group of resources that can be updated and rebooted if required at the same time. From time to time, patches and software updates need to be applied. Some updates require servers to be rebooted. Only one update domain is rebooted at a time.

Technical problems in Azure are called break-fix issues. It is an industry term, which refers to “work involved in supporting a technology when it fails in the normal course of its function, which requires intervention by a support organization to be restored to working order.”

Azure Service Fabric is a distributed systems platform that makes it easy to package, deploy, and manage scalable and reliable microservices and containers. Service Fabric also addresses the significant challenges in developing and managing cloud native applications.

An Azure Virtual Network (VNet) is a representation of your own network in the cloud. It is a logical isolation of the Azure cloud dedicated to your subscription. You can use VNets to provision and manage virtual private networks (VPNs) in Azure and, optionally, link the VNets with other VNets in Azure, or with your on-premises IT infrastructure to create hybrid or cross-premises solutions.

Azure Cache for Redis is a fully managed, in-memory cache that enables high-performance and scalable architectures. You can use it to create cloud or hybrid deployments that handle millions of requests per second at sub-millisecond latency—all with the configuration, security, and availability benefits of a managed service.

Azure role-based access control (Azure RBAC) has several Azure built-in roles that you can assign to users, groups, service principals, and managed identities. Role assignments are the way you control access to Azure resources. If the built-in roles don't meet the specific needs of your organization, you can create your own Azure custom roles.

Azure Diagnostics API helps us collect diagnostic data such as performance monitoring, system event logs, etc from the applications that are running on Azure. For the verbose monitoring of the data, Azure Diagnostics has to be enabled for the cloud service roles. The diagnostics data can be used for building visual chart representations for better monitoring and also for creating performance metric alerts.

Azure Resource Manager (ARM) is the native platform for infrastructure as code (IaC) in Azure. It enables you to centralize the management, deployment, and security of Azure resources. ARM groups resources into containers that group Azure assets together. You can use ARM to deploy assets from multiple Azure resource provider services, such as Microsoft Storage and Microsoft Compute.

An Azure Network Security Group (NSG) is a core component of Azure's security fabric. Leveraging an NSG, you can filter traffic to and from Azure resources that you have commissioned on an Azure Virtual Network (VNet). At its core, an NSG is effectively a set of access control rules you assign to an Azure resource.

Infrastructure as a service (IaaS) is a type of cloud computing service that offers essential compute, storage, and networking resources on demand, on a pay-as-you-go basis.

Platform as a service (PaaS) is a complete development and deployment environment in the cloud, with resources that enable you to deliver everything from simple cloud-based apps to sophisticated, cloud-enabled enterprise applications. You purchase the resources you need from a cloud service provider on a pay-as-you-go basis and access them over a secure Internet connection.

Cloud computing is the delivery of computing services—including servers, storage, databases, networking, software, analytics, and intelligence—over the Internet (“the cloud”) to offer faster innovation, flexible resources, and economies of scale. You typically pay only for cloud services you use, helping you lower your operating costs, run your infrastructure more efficiently, and scale as your business needs change.

A role definition lists the actions that can be performed, such as read, write, and delete. Roles can be high-level, like owner, or specific, like virtual machine reader. Azure includes several built-in roles that you can use.

An update domain is a group of resources that can be updated and rebooted if required at the same time. From time to time, patches and software updates need to be applied. Some updates require servers to be rebooted. Only one update domain is rebooted at a time.

Azure Cache for Redis is a fully managed, in-memory cache that enables high-performance and scalable architectures. Use it to create cloud or hybrid deployments that handle millions of requests per second at sub-millisecond latency—all with the configuration, security, and availability benefits of a managed service.

Azure virtual machine scale sets let you create and manage a group of load balanced VMs. The number of VM instances can automatically increase or decrease in response to demand or a defined schedule.

An availability set is a logical grouping of VMs that allows Azure to understand how your application is built to provide for redundancy and availability. We 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 the drive failure occurs, this is what we should do:

• We need to ensure that the drive is not mounted to make sure that Azure Storage functions without fail
• Replace the drive so that the drive gets remounted and formatted

When you create a storage account, Azure generates two 512-bit storage account access keys for that account. These keys can be used to authorize access to data in your storage account via Shared Key authorization.

Azure Blob storage is Microsoft's object storage solution for the cloud. Blob storage is optimized for storing massive amounts of unstructured data. Unstructured data is data that doesn't adhere to a particular data model or definition, such as text or binary data.

Azure Scheduler lets you run jobs—such as calling HTTP/S endpoints or posting messages to Azure Storage queues—on any schedule, making it ideal for recurring actions like cleaning up logs, kicking off backups, and other maintenance tasks.

The purpose of the dead-letter queue is to hold messages that can't be delivered to any receiver, or messages that couldn't be processed. Messages can then be removed from the DLQ and inspected.

An enterprise data warehouse lets you bring together all your data at any scale easily, and to get insights through analytical dashboards, operational reports, or advanced analytics for all your users.

The operational management service of the Log Analytics provides the entire requirement that runs the particular service. It manifests automation, security, log analytics and availability at a particular dashboard. It generates Power data source that enables the user to get the visuals of the raw data.