AZ-900 Exam

Microsoft Azure Fundamentals

Microsoft resources

• Exam Info – https://learn.microsoft.com/en-us/certifications/exams/az-900
• Study Guide – https://query.prod.cms.rt.microsoft.com/cms/api/am/binary/RE3VwUY

AZ-900 practice questions

What is Azure China?

Azure China is a cloud computing platform and infrastructure created by Microsoft and operated by 21Vianet, a Chinese state-owned company. It is designed to provide Chinese customers with access to the same set of Azure services as those available in other regions, but with data stored and processed in mainland China to comply with local regulations. Azure China services are only available to Chinese customers with a valid Chinese business license.
https://learn.microsoft.com/en-us/azure/china/overview-operations

What is Azure advisor?

Azure Advisor is a free Azure service that helps customers optimize their Azure resources by providing personalized recommendations based on best practices. It analyzes usage patterns, resource configurations, and other data to identify areas where customers can improve performance, security, and cost efficiency.

Azure Advisor provides recommendations in the following categories:

• High availability
• Security
• Performance
• Cost management
• Operational excellence

Advisor analyses data from your Azure resources, and provides an actionable list of recommendations to improve their performance, security, and cost efficiency, it also provide an integration with other Azure services like Azure Policy, Azure Monitor and Azure Automation to allow you to implement the recommendations automatically.
https://azure.microsoft.com/en-gb/products/advisor/#overview

What is NSG in Azure?

A Network Security Group (NSG) in Azure is a firewall that allows you to control inbound and outbound network traffic to virtual machines (VMs) and subnets in a virtual network.

With NSGs, you can:

• Allow or deny traffic to a specific VM or subnet based on IP addresses, ports, and protocols.
• Control access to resources connected to a subnet.
• Apply network security policies at the subnet or individual VM level.
• Log and analyze network traffic flows.

NSGs allow you to create rules that specify which traffic is allowed or denied, based on a variety of criteria such as IP addresses, ports, and protocols. This enables you to secure your Azure resources and limit exposure to potential threats. They also support logging and monitoring, so you can analyse network traffic flows and troubleshoot issues.

NSGs are a fundamental component of Azure’s network security model, and are used to control and secure network traffic to and from your Azure resources. They are a key part of securing your Azure environment, and should be configured and managed as part of your overall security strategy.

https://learn.microsoft.com/en-us/azure/virtual-network/network-security-groups-overview

What is the Azure CLI?

Azure CLI is a command-line interface for managing Azure resources. It is a cross-platform tool that allows you to manage Azure resources from Windows, Linux, and macOS systems. The Azure CLI provides a set of commands for creating, managing, and administering Azure resources in a consistent and efficient manner.

Azure CLI allows you to perform many Azure tasks such as creating and managing virtual machines, storage accounts, and virtual networks, scaling and managing resources, deploying and monitoring applications, and more. It also allows you to automate repetitive tasks and create scripts to manage resources at scale.

Azure CLI uses a subset of Azure Resource Manager (ARM) commands to manage resources and it also supports Azure services such as Azure AD, Azure Container Service and Azure Event Hubs. It is built on top of Azure REST APIs, which means that you can use it to perform any task that can be done through the Azure portal or the Azure SDKs.

The Azure CLI is a powerful tool for managing Azure resources, and is a good choice for automating tasks and creating scripts to manage resources at scale. It can be used in conjunction with other Azure management tools such as Azure PowerShell and Azure Portal.

What is Azure Synapse Analytics

Azure Synapse Analytics is a cloud-based data integration, analytics, and visualization platform from Microsoft. It combines the capabilities of Azure Data Factory, Azure Data Lake, and Power BI to provide a single, integrated experience for data integration, analytics, and visualization. With Azure Synapse Analytics, users can perform a wide range of tasks, including data integration and ETL (extract, transform, and load), data warehousing, big data processing, and analytics. It also provides built-in machine learning capabilities, real-time analytics, and the ability to create interactive dashboards and reports. Additionally, Azure Synapse Analytics allows for easy integration with other Azure services, such as Azure Machine Learning and Azure Cognitive Services.

What is an Azure availability set?

An Azure availability set is a feature of Azure that helps ensure the availability of virtual machines (VMs) by distributing them across multiple physical servers, known as “fault domains,” and multiple power sources, known as “update domains.” This helps to protect against both planned and unplanned downtime, such as scheduled maintenance or power outages.

When you create an availability set, you can specify the number of fault domains and update domains you want to use. Azure then automatically distributes the VMs within the availability set across the specified number of fault domains and update domains. This helps to ensure that if a single physical server or power source goes down, at least one of the VMs in the availability set will still be available.

It is important to note that availability sets are only used for virtual machines that are deployed within the same region, they do not provide disaster recovery solutions. To provide disaster recovery solutions, Azure offers Azure Site Recovery, Azure Backup and Azure Traffic Manager.
https://learn.microsoft.com/en-us/azure/virtual-machines/availability-set-overview