Azure 104 Interview Questions - 2

Which service in Azure is used to manage resources in Azure?
Azure Resource Manager

What is Microsoft Azure and why is it used?
There are a lot of cloud providers out there, one of them one is Microsoft Azure. It is used for accessing Microsoft's infrastructure for cloud.

Hybrid Cloud
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.

What is cloud computing?
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.

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.

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

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

What are virtual machine scale sets in Azure?
Virtual machine scale sets are Azure compute resource 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.

Are data disks supported within scale sets?
Yes. A scale set can define an attached data disk configuration that applies to all VMs in the set.

What is an Availability Set?
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.

What are Fault Domains?
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.

What are Update Domains?
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.

What are Network Security Groups?
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.

Do scale sets work with Azure availability sets?
Yes. For more information, see the scale set zone doc.

Why is Azure Active Directory used?
Azure Active Directory is an Identity and Access Management system. It is used to grant access to your employees to specific products and services in your network. For example: Salesforce.com, twitter etc. Azure AD has some in-built support for applications in its gallery which can be added directly.

What happens when you exhaust the maximum failed attempts for authenticating yourself via Azure AD?
We use a more sophisticated strategy to lock accounts. This is based on the IP address of the request and the passwords entered. The duration of the lockout also increases based on the likelihood that it is an attack.

Where can I find a list of applications that are pre-integrated with Azure AD and their capabilities?
Azure AD has around 2600 pre-integrated applications. All pre-integrated applications support single sign-on (SSO). SSO let you use your organizational credentials to access your apps. Some of the applications also support automated provisioning and de-provisioning.

How can I use applications with Azure AD that I'm using on-premises?
Azure AD gives you an easy and secure way to connect to the web applications you choose. You can access these applications in the same way you access your SaaS apps in Azure AD, no need for a VPN to change your network infrastructure.

What is Azure Service Fabric?
Azure Service Fabric is a distributed systems platform that makes it easy to package, deploy, and manage scalable and reliable micro-services. Service Fabric also addresses the significant challenges in developing and managing cloud applications. Developers and administrators can avoid complex infrastructure problems and focus on implementing mission-critical, demanding workloads that are scalable, reliable, and manageable. Service Fabric represents the next-generation middleware platform for building and managing these enterprise-class, tier-1, cloud-scale applications.

VNet is a representation of your own network in the cloud. It logically isolates your instances launched in the cloud, from the rest of your resources.

What is Cloud Computing?
Cloud computing is a concept that means storing and accessing the data on the internet. In the case of cloud computing, you are accessing the data from a remote server.

What are the advantages of cloud computing?
Cost-saving is one of the cool benefits of cloud computing so many organization prefers to use cloud computing.

What are the types of scaling in the cloud computing?
Horizontal scaling: Horizontal scaling is that you scale up your pool by adding more systems/machines into your pool of resources

What is Azure Portal?
Azure Portal is a single portal or a single place where you are accessing and managing all your applications. It helps to build, manage, and monitor your simple web-applications to complex cloud applications using a single portal.

What are the web applications can be deployed with Azure?
Different web applications like .Net, PHP, WCF, Java, etc are supported in Azure. Multiple languages are supported in Azure.

Different web applications like .Net, PHP, WCF, Java, etc are supported in Azure. Multiple languages are supported in Azure.
Web Role: A web Role is used to deploy web applications that are built on with different languages that are supported in Azure.

What are the different principal segments of Windows Azure platform?
There are three different principal segments that are present in the case of the Azure platform i.e Compute, Storage, and Fabric.

What is table storage in Windows Azure?
The Azure Table storage allows us to store structured data. It stores NoSQL data.

What is Queue storage in Windows Azure?
Azure Queue storage is a type of Azure storage that can store large numbers of messages that can be accessed from anywhere in the world using HTTP or HTTPS protocols.

What is Azure diagnostic?
This is an API based system that collects the data to diagnose the application which is running continuously. This is one of the important API by Microsoft.

What are the examples of some applications in Azure?
There are many applications provided by Microsoft Azure. For example Web Applications, Cloud Services, Mobile applications, Storage services, Virtual computing, Networking services, Analytics services, etc.

What is auto scaling in Azure?
The auto-scaling is a feature that enables your application to scale up or down automatically based on your defined condition. Based on the demand Azure auto-scaling feature scales out the instances more.

What do you mean by a BLOB storage and what are their types?
lAzure Blob storage allows storing unstructured data. We can store huge data like text files, images, audios, and videos, media files, or application installers, etc.

What are the three types of Blob Storage?
The Blob storage is of three types

What are virtual machine scale sets in Azure?
You can use the virtual machine scale sets to deploy and manage a set of identical virtual machines (VM).

What is enterprise warehousing?
It means the data is developed by an organization having access at a single point throughout the globe. It is used in case of massive data.

What do you mean by an Availability Set?
An availability set is a logical grouping of virtual machines (VMs) that allows Microsoft Azure to understand how your application is built to provide availability and redundancy. This helps to isolate the VM Resources from each other when they are deployed.

What are Network Security Groups?
A network security group (NSG) contains different security rules that allow or can deny to the inbound network traffic or from the outbound network traffic to subnets from different types of Azure resources. These rules are called a list of Access Control List (ACL) rules.

What is break-fix issue?
It is an industry term. Technical related problems for an organization is known as the break-fix issue. When work involved for a specific technology fails then break-fix comes into the picture. This will be solved by a support organization.

What is Windows Azure Scheduler?
If you want to create jobs and schedule them to run in the cloud in some specified timeline then in that case you can use the Windows Azure Scheduler. You can also call different services inside and outside Azure like calling HTTP and HTTPS endpoints etc.

What is a Fault Domain?
This is a logical group that contains a set of hardware that shares a common power source and network switch. This process minimizes the issues in case of Physical hardware failures, network outages, or power interruptions, etc. When you are creating the Virtual machines (VM), the Azure platform automatically distributes these VMs with these fault domains.

What is the use of VNET?
VNET helps to represent your network within the cloud environment. It helps you to isolate your instances logically launched in the cloud environment, from the rest of your Azure resources.

What is service fabric in Azure?
This is a middleware platform that provides you a more scalable outcome. Basically, It renders with the enterprise that is more managed and reliable.

What is Azure Advisor?
Azure Advisor is a free tool from Microsoft. It analyzes your configurations and usage and provides personalized, recommendations to help you optimize your Azure resources for high availability, security, etc.

What is the difference between Service Bus Queues and Storage Queues?
Service Bus Queues is a terminology where a sender delivers a message to a Queue that is used to reside in a Service Bus Namespace, later the receiver receives that message.

What is the role of traffic manager in Windows Azure?
Azure Traffic Manager is a traffic load balancer that helps you to distribute the traffic equally to all the services across global Azure regions that provide high availability and responsiveness for the Azure services.

What are the different ways to host web sites in Azure?

Deployment using GIT.
Visual Studio Publish method.
Deployment using FTP.
PowerShell command to deploy the website.

State the different Options to manage session state in Windows Azure?
Below are the options to manage the session state in Windows Azure

What are the types of BLOB storage and explain those?

The storage service offers three types of blobs, block blobs, append blobs, and page blobs.
Block blobs are optimized for uploading large amounts of data efficiently. Block blobs are composed of blocks, each of which is identified by a block ID. A block blob can include up to 50,000 blocks. 
Page blobs are a collection of 512-byte pages optimized for random read and write operations
An append blob is composed of blocks and is optimized for append operations. When you modify an append blob, blocks are added to the end of the blob only, via the Append Block operation.
Each block in an append blob can be a different size, up to a maximum of 4 MiB, and an append blob can include up to 50,000 blocks. The maximum size of an append blob is therefore slightly more than 195 GiB (4 MiB X 50,000 blocks).

What are unconnected lookups?
In the unconnected lookups method, User-defined values are considered in the unconnected lookups.

What Is Azure Compute Emulator?
The Azure Compute Emulator helps us to debug and test the Azure Cloud Services in our local environment without deploying the cloud service to the Microsoft Azure.

What Is Azure Data Factory?
Azure Data Factory is a cloud-based ETL and data integration tool or service that helps you to create different data-driven workflows that make it easy to move the data.

What are the different pricing models of Microsoft Azure?

Microsoft offers three main ways to pay for Azure VMs and other cloud resources: pay as you go, reserved instances, and spot instances.

What is a storage key?
The storage key is also known as Access Key.

What are Azure App Services?
Azure App Service is known as a fully managed Platform as a service (Paas) that is responsible to integrate Microsoft Azure websites, BizTalk and Mobile services, etc into a single service and also adds some new capabilities or features which enables the integration with the On-premises or the cloud systems.

What do you mean by profiling in Azure?
In one line, Profiling in Azure is a process of measuring the performance analysis of an application.

What is Azure DevOps?
Microsoft provides another Software as a service (SaaS) platform, that helps to provide a complete DevOps toolchain starting from the development of the software to the deployment meaning for the complete software development life cycle.

What is Cosmos DB?
Azure Cosmos DB is the right solution for different applications like web, mobile, gaming with predictable throughput, high availability.

What Is Azure Cognitive Services?
Azure Cognitive service is one of the excellent services from Microsoft that helps the developers to implement Artificial Intelligence (AI), Machine Learning (ML) without having the expertise in these areas.

What is Azure Cognitive Services Face API?
The Azure Cognitive Services Face API provides an advanced algorithm that helps you to detect or read the human faces in different digital images. That includes detecting the emotions and facial expressions like happiness, fear, etc. Check out some more information on Azure Cognitive Services Face API now.

What is Azure Cognitive Services Luis?
Azure Cognitive Services Luis meaning Azure Cognitive Services Language Understanding.

What is Azure Text Analytics API?
Azure text analytics service is one part of Azure cognitive services that helps you to perform different operations easily like Key phrase extraction, Sentiment analysis, Language detection, named entity recognition, etc.