Azure Fundamentals
VMs, Storage, Virtual Networks, App Service, Azure Functions, Azure AD, Managed Identity
1What is an Azure Virtual Machine (VM)?
What is an Azure Virtual Machine (VM)?
답변
An Azure VM is an on-demand scalable compute resource that functions as a virtualized server in the Azure cloud. It allows deploying Windows or Linux operating systems with full control over configuration. Use VMs for workloads requiring full OS control or for migrating on-premise applications via lift-and-shift.
2What is the difference between an Availability Set and an Availability Zone in Azure?
What is the difference between an Availability Set and an Availability Zone in Azure?
답변
An Availability Set protects against rack-level failures by distributing VMs across multiple fault and update domains within a single datacenter. An Availability Zone protects against datacenter-level failures by distributing resources across physically separated datacenters within a region. Availability Zones offer a 99.99% SLA versus 99.95% for Availability Sets and protect against more severe failures.
3Which Azure storage type should be used to store unstructured files like images or videos accessible via HTTP?
Which Azure storage type should be used to store unstructured files like images or videos accessible via HTTP?
답변
Azure Blob Storage is designed to store unstructured data (images, videos, documents) accessible via HTTP/HTTPS. It offers three storage tiers (Hot, Cool, Archive) to optimize costs based on access frequency. Use Blob Storage for static website content, backups, and media storage. Azure Files is for SMB file shares, Table Storage for structured NoSQL data, and Queue Storage for messaging.
What is the difference between Hot, Cool, and Archive storage tiers in Azure Blob Storage?
What is a Network Security Group (NSG) in Azure?
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