- What is cloud computing?
- The delivery of computing services — servers, storage, databases, networking, software, and analytics — over the internet, billed on a pay-as-you-go basis
- What is the shared responsibility model?
- A division of security duties between the cloud provider and the customer; what each owns shifts with the service type (IaaS, PaaS, SaaS)
- Under the shared responsibility model, what is ALWAYS the customer's responsibility?
- Information and data, devices, and accounts and identities — regardless of the cloud service type used
- Under the shared responsibility model, what is ALWAYS Microsoft's responsibility?
- Physical hosts, physical network, and the physical datacenter — regardless of service type
- What is IaaS (Infrastructure as a Service)?
- A cloud model that provides virtualized compute, storage, and networking; the customer manages the OS, runtime, and applications. Example: Azure Virtual Machines
- What is PaaS (Platform as a Service)?
- A managed platform for building and deploying apps; the provider manages OS and infrastructure, the customer manages apps and data. Example: Azure App Service
- What is SaaS (Software as a Service)?
- Fully managed software delivered over the internet; the provider manages almost everything and the customer just uses the app. Example: Microsoft 365
- In which cloud model does the customer have the MOST responsibility?
- IaaS — the customer manages the operating system, applications, and data on top of the provider's infrastructure
- In which cloud model does the customer have the LEAST responsibility?
- SaaS — the provider manages almost the entire stack; the customer mainly manages data, identities, and access
- What is a public cloud?
- Cloud services owned and operated by a third-party provider (like Microsoft) and shared across many customers over the public internet; no capital expense
- What is a private cloud?
- Cloud resources used exclusively by one organization, hosted on-premises or by a third party; offers more control but requires more management and cost
- What is a hybrid cloud?
- A computing environment that combines public and private clouds, allowing data and apps to move between them for flexibility, compliance, and gradual migration
- What is Azure Arc used for?
- Managing and governing servers, Kubernetes clusters, and databases across on-premises, multicloud, and edge from a single Azure control plane (key to hybrid scenarios)
- What is CapEx (capital expenditure)?
- Upfront spending on physical assets like servers and datacenters, depreciated over time; typical of on-premises infrastructure
- What is OpEx (operational expenditure)?
- Spending on services as you consume them with no large upfront cost; the cloud's pay-as-you-go model is OpEx
- Does the cloud use a CapEx or OpEx model?
- OpEx — you pay for resources as you consume them, converting large upfront capital costs into ongoing operational costs
- What is the consumption-based (pay-as-you-go) model?
- You pay only for the resources you use, with no upfront cost and the ability to stop paying when you stop using a resource
- What is high availability in the cloud?
- Designing services to remain accessible and operational for as much time as possible, minimizing downtime — often by spreading across availability zones
- What is scalability in the cloud?
- The ability to add or remove resources to match demand; includes scaling up (bigger resources) and scaling out (more instances)
- What is the difference between scaling up and scaling out?
- Scaling up (vertical) adds power to an existing resource; scaling out (horizontal) adds more instances of a resource
- What is elasticity in the cloud?
- The ability to automatically add or remove resources as demand changes in near real time, so you pay only for what you need at any moment
- What is reliability in the cloud?
- The ability of a system to recover from failures and continue to function; the cloud supports it with redundant, decentralized regions worldwide
- What is predictability in the cloud?
- Being able to forecast performance and cost; achieved through autoscaling, load balancing, and tools like the Pricing Calculator and Cost Management
- What is agility in the cloud?
- The ability to deploy and configure cloud resources quickly as requirements change, rather than waiting weeks to procure hardware
- What is disaster recovery in the cloud?
- The ability to restore services and data after a major outage, often using geo-redundant storage and services across paired regions
- What is the benefit of cloud security and governance?
- Centralized policy, templates, and built-in tools (like Azure Policy and Microsoft Defender for Cloud) help meet compliance and update standards consistently
- What is manageability in the cloud (two meanings)?
- Management OF the cloud (autoscaling, monitoring, alerts) and management IN the cloud (web portal, CLI, APIs, templates) to control resources
- What is fault tolerance?
- A system's ability to keep operating without interruption when one or more components fail, often through redundancy
- Why does the cloud reduce time-to-market?
- Resources can be provisioned in minutes instead of weeks, so teams can build, test, and deploy applications faster
- What are economies of scale in the cloud?
- Large providers buy compute and storage at huge volume and pass the lower per-unit cost to customers, making cloud cheaper than self-hosting
- Which cloud model best fits a company that wants no responsibility for the OS or runtime, only the app's data?
- SaaS — the provider manages everything except the customer's data, identities, and access
- Which cloud model best fits a developer who wants to deploy code without managing servers or patching the OS?
- PaaS — the platform handles infrastructure and OS while the developer focuses on the application
- Which cloud model best fits lifting and shifting existing VMs to the cloud?
- IaaS — you run virtual machines and control the OS, much like on-premises servers
- What does 'security in the cloud' vs 'security of the cloud' mean?
- Microsoft is responsible for the security OF the cloud (physical infrastructure); the customer is responsible for security IN the cloud (data, identities, configuration)
- Which expense model removes the risk of over-provisioning hardware?
- OpEx / consumption-based — you scale resources to actual demand instead of buying for peak capacity upfront
- What is a key benefit of high availability across availability zones?
- If one datacenter or zone fails, the application keeps running from another zone, minimizing downtime
- What cloud deployment model lets an organization meet data-residency rules while still using public cloud for other workloads?
- Hybrid cloud — keep regulated data on a private cloud or on-premises and use public cloud elsewhere
- What is multicloud?
- Using cloud services from more than one provider (for example Azure and another vendor) to avoid lock-in or use best-of-breed services
- Why is the cloud considered more secure than many on-premises setups?
- Providers offer built-in security, continuous monitoring, automatic updates, and certifications most single organizations cannot match alone
- What is the main trade-off of a private cloud?
- More control and isolation, but higher cost and management overhead, and you lose the elasticity and pay-as-you-go benefits of public cloud
- What is an Azure region?
- A set of datacenters deployed within a latency-defined perimeter and connected by a dedicated low-latency network; you choose a region to deploy resources
- What is an availability zone?
- A physically separate datacenter (or group) within an Azure region, each with independent power, cooling, and networking, used for high availability
- What is a region pair?
- Two regions in the same geography paired for disaster recovery; updates roll out one region at a time and data can be replicated between them
- What is an Azure datacenter?
- A physical facility containing servers and infrastructure; multiple datacenters make up an availability zone or region
- How many availability zones does an enabled Azure region have at minimum?
- At least three physically separated availability zones
- What is an Azure sovereign region?
- An isolated instance of Azure for specific compliance or legal needs, such as Azure Government (US) or Azure operated by 21Vianet (China)
- What is a resource in Azure?
- A manageable item available through Azure, such as a virtual machine, storage account, database, or virtual network
- What is a resource group?
- A logical container that holds related Azure resources; resources can belong to only one resource group at a time and share its lifecycle
- Can a resource belong to more than one resource group?
- No. A resource exists in exactly one resource group, though it can be moved to another
- What is an Azure subscription?
- A logical unit of Azure services linked to an account; it sets billing boundaries and access control and contains resource groups
- What is a management group?
- A container above subscriptions used to apply governance (policies, access) across many subscriptions at once in a hierarchy
- What is the Azure management hierarchy from top to bottom?
- Management groups, then subscriptions, then resource groups, then resources
- What is an Azure Virtual Machine (VM)?
- An on-demand, scalable IaaS compute resource that runs a full operating system, giving you control like a physical server
- What is a Virtual Machine Scale Set?
- A service that lets you create and manage a group of identical, load-balanced VMs that automatically scale out or in with demand
- What are Azure availability sets?
- A way to group VMs across fault domains and update domains within a datacenter to protect against hardware failures and maintenance
- What is Azure Virtual Desktop?
- A desktop and app virtualization service that runs Windows desktops in the cloud, accessible from anywhere on any device
- What are Azure Container Instances (ACI)?
- The fastest, simplest way to run a single container in Azure without managing virtual machines (serverless containers)
- What is Azure Kubernetes Service (AKS)?
- A managed Kubernetes service for deploying, scaling, and managing containerized applications at scale
- What is Azure App Service?
- A PaaS offering for hosting web apps, REST APIs, and mobile back ends without managing the underlying infrastructure
- What are Azure Functions?
- A serverless compute service that runs event-triggered code without provisioning servers; you pay only while the code runs
- What is serverless computing?
- A model where the cloud provider fully manages the infrastructure and you pay only for execution; Azure Functions is the main example
- When would you choose containers over a full VM?
- When you want lightweight, portable, fast-starting workloads that share an OS kernel and don't need a full guest operating system per instance
- What is a virtual network (VNet)?
- The fundamental building block for private networks in Azure, enabling resources to securely communicate with each other, the internet, and on-premises networks
- What is VNet peering?
- Connecting two virtual networks so resources can communicate directly using private IP addresses, as if on the same network
- What is an Azure VPN Gateway?
- A service that sends encrypted traffic between an Azure virtual network and an on-premises location (site-to-site) or device (point-to-site) over the internet
- What is Azure ExpressRoute?
- A service that creates a private, dedicated connection between on-premises infrastructure and Azure, bypassing the public internet for more reliability and speed
- What is the difference between VPN Gateway and ExpressRoute?
- VPN Gateway uses encrypted traffic over the public internet; ExpressRoute uses a private, dedicated connection that never touches the public internet
- What is Azure DNS?
- A hosting service for DNS domains that resolves domain names to IP addresses using Microsoft's global network
- What is a Network Security Group (NSG)?
- A set of inbound and outbound security rules that allow or deny network traffic to Azure resources within a virtual network
- What is Azure storage account?
- A container that holds Azure Storage data objects — blobs, files, queues, and tables — with a unique namespace accessible worldwide
- What is Azure Blob Storage?
- Object storage optimized for storing massive amounts of unstructured data such as text, images, video, and backups
- What are the Blob Storage access tiers?
- Hot (frequent access), Cool (infrequent, stored 30+ days), Cold (rarely accessed, 90+ days), and Archive (lowest cost, offline, rarely accessed)
- Which Blob access tier has the lowest storage cost?
- The Archive tier — but it has the highest retrieval cost and latency and requires rehydration before reading
- What is Azure Files?
- Fully managed file shares in the cloud accessible via SMB or NFS, which can be mounted by cloud or on-premises machines
- What is Azure Disk Storage?
- Block-level storage volumes (managed disks) attached to Azure Virtual Machines, similar to a physical disk in a server
- What is Azure Queue Storage?
- A service for storing large numbers of messages that can be accessed from anywhere, used to decouple and scale application components
- What is Azure Table Storage?
- A NoSQL key-value store for structured, non-relational data, ideal for large amounts of flexible datasets
- What is locally redundant storage (LRS)?
- Replication that keeps three copies of your data within a single datacenter; the lowest-cost, lowest-durability redundancy option
- What is zone-redundant storage (ZRS)?
- Replication that copies data synchronously across three availability zones in a single region for higher availability
- What is geo-redundant storage (GRS)?
- Replication that copies data to a secondary region hundreds of miles away, protecting against a complete regional outage
- Which storage redundancy option protects against an entire region failing?
- Geo-redundant storage (GRS) or geo-zone-redundant storage (GZRS), which replicate to a secondary region
- What is Azure Storage Mover / Migrate used for?
- Moving large amounts of data into Azure; AzCopy and Azure Storage Explorer also help upload and manage storage data
- What is Microsoft Entra ID (formerly Azure Active Directory)?
- Microsoft's cloud-based identity and access management service that authenticates users and controls access to apps and resources
- What is the difference between authentication and authorization?
- Authentication (AuthN) proves who you are; authorization (AuthZ) determines what you are allowed to do once authenticated
- What is single sign-on (SSO)?
- A capability that lets a user sign in once and access multiple applications without re-entering credentials, reducing password fatigue
- What is multifactor authentication (MFA)?
- Requiring two or more verification factors — something you know, have, or are — to sign in, greatly improving account security
- What is Conditional Access?
- A Microsoft Entra feature that applies access policies based on signals like user, location, device, and risk before granting access
- What is Microsoft Entra ID Protection?
- A tool that detects, investigates, and remediates identity-based risks using automated risk policies
- What is Microsoft Entra External ID / B2B?
- A capability that lets external partners and guests securely access your resources using their own identities
- What is the Azure portal?
- A web-based, unified console where you build, manage, and monitor everything from simple web apps to complex deployments using a graphical interface
- What is Azure Cloud Shell?
- A browser-based, authenticated shell experience for managing Azure resources, available in Bash or PowerShell
- What is Azure PowerShell?
- A set of cmdlets for managing Azure resources directly from the PowerShell command line or in automation scripts
- What is the Azure CLI?
- A cross-platform command-line tool for creating and managing Azure resources using commands and scripts
- What is the Azure mobile app?
- An app for iOS and Android that lets you monitor resources, check health and metrics, and run Cloud Shell commands on the go
- What is Azure Arc?
- A service that extends Azure management and governance to resources running on-premises, at the edge, and in other clouds
- What is Azure Resource Manager (ARM)?
- The deployment and management layer for Azure; every request to manage a resource goes through ARM for consistent control, access, and tagging
- What are ARM templates?
- JSON files that define infrastructure as code, so you can deploy Azure resources declaratively and repeatedly
- What is Azure Bicep?
- A domain-specific language that simplifies infrastructure as code on Azure with cleaner syntax than ARM JSON templates
- What is Azure SQL Database?
- A fully managed PaaS relational database engine based on SQL Server, with automated patching, backups, and high availability
- What is Azure Cosmos DB?
- A globally distributed, multi-model NoSQL database service with low latency and elastic scalability across many regions
- What is Azure Database for MySQL / PostgreSQL?
- Fully managed, open-source relational database services on Azure that handle patching, backups, and scaling
- What is Azure SQL Managed Instance?
- A PaaS option that gives near-100% compatibility with on-premises SQL Server, ideal for lift-and-shift database migrations
- What is the Azure Marketplace?
- An online store of certified, ready-to-use applications and services from Microsoft and partners that can be deployed into Azure
- What is Azure Virtual Machines best suited for?
- Full control of the OS and software, lift-and-shift migrations, custom configurations, and apps that need a complete server
- Which compute option is best for short-lived, event-driven code with no servers to manage?
- Azure Functions (serverless) — it runs only when triggered and you pay only for execution time
- Which networking service should you use for a private, high-bandwidth on-premises link to Azure?
- Azure ExpressRoute — a dedicated private connection that bypasses the public internet
- Which storage service is best for unstructured data like images and video?
- Azure Blob Storage — object storage designed for massive amounts of unstructured data
- Which Azure service provides managed Kubernetes?
- Azure Kubernetes Service (AKS)
- What identity service replaced the name 'Azure Active Directory'?
- Microsoft Entra ID — the same service, rebranded
- What is the difference between Microsoft Entra ID and on-premises Active Directory?
- Entra ID is a cloud identity service using internet protocols (no Group Policy or OUs); on-premises AD manages domain-joined Windows devices with Group Policy
- What does a load balancer do?
- Distributes incoming network traffic across multiple resources to improve availability and reliability
- What is Azure Content Delivery Network (CDN)?
- A distributed network of servers that caches content close to users to deliver web content with low latency
- What is the difference between Azure Files and Blob Storage?
- Azure Files provides mountable SMB/NFS file shares with a folder structure; Blob Storage is flat object storage for unstructured data
- What is a fault domain?
- A group of hardware sharing a common power source and network switch; spreading VMs across fault domains protects against hardware failure
- What is an update domain?
- A logical group of hardware updated and rebooted together during maintenance; spreading VMs across them avoids simultaneous reboots
- Which database service is best for globally distributed, low-latency NoSQL workloads?
- Azure Cosmos DB
- What is Azure Migrate?
- A central hub of tools to assess and migrate on-premises servers, databases, web apps, and data to Azure
- What does the Azure Region selection affect?
- Service availability, data residency/compliance, latency to users, and pricing — all can vary by region
- What is Azure Service Bus?
- A fully managed enterprise message broker used to decouple applications and services with queues and publish-subscribe topics
- Which compute model gives the customer the most control over the OS?
- Azure Virtual Machines (IaaS) — you fully manage the guest operating system
- What is the purpose of tags on Azure resources?
- Name-value pairs applied to resources to organize them and group costs for billing, governance, and reporting
- Which service lets you run identical, autoscaling VMs as a managed group?
- Virtual Machine Scale Sets
- Which Azure storage redundancy keeps data in one datacenter only?
- Locally redundant storage (LRS)
- What is the relationship between subscriptions and billing?
- Each subscription has its own billing and usage tracking; organizations often split workloads, environments, or departments into separate subscriptions
- What is Azure App Service best suited for?
- Hosting web applications and APIs without managing servers, with built-in scaling, deployment slots, and SSL
- What protocol does a site-to-site VPN connection use?
- IPsec/IKE encrypted tunnels over the public internet between an on-premises VPN device and an Azure VPN gateway
- What is the smallest deployable unit in the Azure management hierarchy?
- A resource (such as a single VM or storage account)
- Which tool gives a graphical way to manage Azure in a browser?
- The Azure portal
- Which tools let you manage Azure from a command line?
- Azure CLI, Azure PowerShell, and Azure Cloud Shell (browser-based)
- Which service caches static content near users to reduce latency?
- Azure Content Delivery Network (CDN)
- What kind of data is best stored in Azure Table Storage?
- Structured, non-relational (NoSQL) key-value data that does not need complex joins or stored procedures
- What is a primary benefit of availability zones for a VM workload?
- Deploying across zones protects against an entire datacenter failure within a region, offering up to a 99.99% SLA
- Which service connects two Azure virtual networks privately?
- Virtual network (VNet) peering
- What is the role of an internet gateway in a VNet?
- Allows resources in the virtual network to communicate with the public internet, while NSGs and subnets control the traffic
- Which Azure database is fully managed and compatible with existing SQL Server skills?
- Azure SQL Database (or SQL Managed Instance for higher compatibility)
- What is the benefit of a region pair?
- Automatic data replication options, sequential updates to avoid simultaneous downtime, and prioritized recovery during a broad outage
- What does SSO reduce?
- The number of times users must enter credentials and the number of passwords they must remember, lowering risk and help-desk load
- Which identity feature blocks risky sign-ins based on location or device?
- Conditional Access
- Which compute service runs a single container with the least management?
- Azure Container Instances (ACI)
- Which storage type would you attach to a VM as its operating-system disk?
- Azure Disk Storage (managed disks)
- What is Microsoft Cost Management?
- A suite of tools to monitor, allocate, and optimize Azure spending through analysis, budgets, alerts, and recommendations
- What is the Azure Pricing Calculator?
- A free tool to estimate the cost of Azure products and services before you deploy them, by configuring a sample architecture
- What is the Total Cost of Ownership (TCO) Calculator?
- A tool that estimates the cost savings of migrating on-premises workloads to Azure by comparing current and cloud costs
- What is the difference between the Pricing Calculator and the TCO Calculator?
- The Pricing Calculator estimates the cost of a planned Azure deployment; the TCO Calculator compares on-premises costs against Azure to show savings
- What factors affect Azure cost?
- Resource type, services used, region, ingress/egress traffic, subscription type, and the Azure Marketplace items chosen
- Why is data egress (outbound) often charged while ingress is usually free?
- Azure generally does not charge for data going into Azure (ingress) but charges for data leaving regions or Azure (egress)
- What is an Azure budget?
- A spending threshold set in Cost Management that triggers alerts when actual or forecasted costs approach or exceed it
- What is a cost alert?
- An automated notification from Cost Management when spending, a budget, or a credit reaches a defined threshold
- How can resource tags help with cost management?
- Tags group and report costs by department, project, or environment, making it easy to allocate and analyze spending
- What is Azure Reservations (Reserved Instances)?
- A way to commit to one or three years of a resource for a significant discount versus pay-as-you-go pricing
- What is the Azure Hybrid Benefit?
- A licensing benefit that lets you use existing on-premises Windows Server and SQL Server licenses to lower Azure costs
- What are Azure spot VMs used for?
- Running interruptible workloads on unused capacity at deep discounts, with the trade-off that Azure can reclaim them anytime
- Name three ways to reduce Azure costs.
- Use reservations or savings plans, right-size and deduplicate resources, use spot VMs, apply Azure Hybrid Benefit, and shut down unused resources
- What is a service-level agreement (SLA)?
- A formal commitment by Microsoft about the expected performance and uptime of a service, expressed as a percentage
- What does an SLA of 99.9% mean for downtime?
- Roughly up to about 8.7 hours of allowable downtime per year (around 43 minutes per month)
- Do free Azure services have a financially backed SLA?
- No. Free tier and preview services typically have no financially backed SLA
- How can you increase the composite SLA of an application?
- Add redundancy (availability zones, multiple regions) and remove single points of failure; combining services multiplies their individual SLAs
- What is an Azure service-credit?
- A credit applied to your bill when Microsoft fails to meet the committed SLA for a paid service
- What is the Azure service lifecycle (preview vs GA)?
- Services move through private preview, public preview, then general availability (GA); preview features may lack full SLA and support
- What is Azure Policy?
- A governance service that creates, assigns, and manages rules to enforce standards and assess compliance across resources
- What is the difference between Azure Policy and RBAC?
- Azure Policy controls WHAT properties resources can have (compliance/standards); RBAC controls WHO can do WHAT actions (access)
- What is a resource lock?
- A lock that prevents accidental deletion or modification of a resource; types are CanNotDelete (Delete) and ReadOnly
- What is the difference between a CanNotDelete and a ReadOnly lock?
- CanNotDelete allows reading and modifying but not deleting; ReadOnly allows only reading — no modifying or deleting
- What are Azure Blueprints (and their successor)?
- A way to define a repeatable set of resources, policies, and assignments to deploy compliant environments; Microsoft now recommends Template Specs and deployment stacks instead
- What is the Microsoft Purview governance portal?
- A unified data governance service that helps discover, catalog, classify, and manage data across on-premises, multicloud, and SaaS
- What is role-based access control (RBAC)?
- A system that grants users, groups, and apps only the access they need by assigning roles at a defined scope
- At what scopes can an RBAC role be assigned?
- Management group, subscription, resource group, or individual resource — and it is inherited downward
- What is the principle of least privilege?
- Granting users only the minimum access required to do their job, reducing the attack surface
- What is the Zero Trust security model?
- A model that assumes breach and verifies every request explicitly, uses least-privilege access, and never trusts based on network location alone
- What is defense in depth?
- A layered security strategy where multiple defenses (physical, identity, perimeter, network, compute, app, data) slow and stop attackers
- What is Microsoft Defender for Cloud?
- A tool for cloud security posture management and workload protection that monitors security, gives a secure score, and detects threats across hybrid and multicloud
- What is the Microsoft Defender for Cloud secure score?
- A measurement of your security posture; higher scores mean fewer identified risks and better adherence to recommendations
- What is Azure Monitor?
- A platform service that collects, analyzes, and acts on telemetry (metrics and logs) from Azure and on-premises environments
- What is Log Analytics?
- A tool within Azure Monitor for writing and running queries against collected log data to investigate and analyze it
- What is Application Insights?
- An Azure Monitor feature for application performance management (APM) that monitors live web apps for performance and usage
- What are Azure Monitor alerts?
- Notifications and automated actions triggered when a metric or log condition crosses a defined threshold
- What is Azure Service Health?
- A service that gives personalized alerts and guidance about Azure service issues, planned maintenance, and health advisories affecting your resources
- What are the three views in Azure Service Health?
- Azure status (global outages), Service health (issues affecting your services), and Resource health (health of your specific resources)
- What is the Azure status page?
- A global page showing the health of Azure services across all regions, regardless of which resources you use
- What is Resource health in Azure?
- A view that reports the current and past availability of your individual resources and explains why a resource may be unavailable
- What is the Azure mobile app used for in monitoring?
- Checking resource status, metrics, alerts, and service health, and running quick management tasks from a phone
- What is Microsoft Entra Privileged Identity Management (PIM)?
- A service that provides just-in-time, time-bound privileged access with approval workflows and auditing to limit standing admin rights
- Which tool would you use to ENFORCE that all resources are deployed only to a specific region?
- Azure Policy — it can deny or audit resources that do not meet the rule
- Which tool would you use to PREVENT a critical resource from being deleted?
- A resource lock (CanNotDelete / Delete lock)
- Which tool estimates savings from moving on-premises servers to Azure?
- The Total Cost of Ownership (TCO) Calculator
- Which tool estimates the monthly cost of a new Azure deployment?
- The Azure Pricing Calculator
- Which service gives a unified view of security posture and threat protection?
- Microsoft Defender for Cloud
- Which service collects metrics and logs to monitor performance?
- Azure Monitor
- Which service notifies you about an Azure outage affecting your subscription?
- Azure Service Health
- What does RBAC control that Azure Policy does not?
- WHO can perform actions on resources (access), whereas Azure Policy controls WHAT configuration resources may have
- Which governance tool helps classify and catalog data across your estate?
- Microsoft Purview
- What is the benefit of setting a budget with alerts?
- It proactively warns you before spending exceeds plan, helping avoid surprise bills
- Why might two regions have different prices for the same service?
- Costs (power, real estate, taxes) and supply differ by location, so Azure pricing varies by region
- What is the SLA impact of combining multiple services in an application?
- Composite SLA is the product of each service's SLA, so adding more dependent services usually lowers the overall guarantee unless you add redundancy
- What does a ReadOnly lock prevent?
- Any modification or deletion of the resource; only read operations are allowed
- How does the Azure Hybrid Benefit lower cost?
- It lets you reuse existing eligible Windows Server and SQL Server licenses instead of paying for new ones in Azure
- What is the secure score used for?
- Tracking and improving your security posture by following Defender for Cloud's prioritized recommendations
- Which Azure Monitor tool is for querying collected logs?
- Log Analytics
- Which Azure Monitor tool monitors a live application's performance?
- Application Insights
- What is the relationship between management groups and Azure Policy?
- Assigning a policy at a management group applies it to all subscriptions and resources beneath it, enabling org-wide governance
- What is a savings plan for compute?
- A flexible pricing model giving lower rates in exchange for a one- or three-year commitment to a fixed hourly spend on compute
- How do reservations differ from savings plans?
- Reservations commit to a specific resource type/region for a discount; savings plans commit to an hourly compute spend and apply flexibly across services
- What is the purpose of Azure Advisor?
- A free service that analyzes your configuration and gives personalized recommendations for cost, security, reliability, performance, and operational excellence
- Which five categories does Azure Advisor cover?
- Cost, security, reliability, operational excellence, and performance
- What does a 99.99% SLA roughly allow for yearly downtime?
- About 52 minutes of downtime per year
- What is the difference between a budget and a cost alert?
- A budget is the spending threshold you set; a cost alert is the notification fired when spending nears or crosses that budget
- Which tool would generate a personalized cost-optimization recommendation?
- Azure Advisor
- What is just-in-time access?
- Granting elevated permissions only for the time they are needed and removing them afterward, reducing standing privilege (provided by Entra PIM)
- Why use multiple subscriptions for governance?
- To separate billing, apply different policies and limits, and isolate environments (such as production and development)
- What does compensatory scoring mean on the AZ-900 exam?
- You only need an overall scaled score of 700 to pass; you do not have to pass each individual skill area
- What use case best fits a public cloud?
- Workloads that benefit from elasticity and low cost without capital investment, such as web apps with variable traffic
- What use case best fits a hybrid cloud?
- Keeping sensitive or regulated data on-premises while bursting other workloads to public cloud, or migrating gradually
- What is the main cost benefit of the consumption-based model?
- No upfront capital cost and no charge for idle capacity — you pay only for what you actually use
- Which is automatic: scalability or elasticity?
- Elasticity — it automatically adds or removes resources in near real time as demand changes
- Which cloud benefit ensures a service keeps running during a datacenter failure?
- High availability, typically achieved by spreading the workload across availability zones
- Which cloud benefit is about recovering after a failure?
- Reliability — supported by redundant, decentralized regions and disaster-recovery options
- Why is the cloud described as having predictability?
- Performance and cost can be forecast and controlled using autoscaling, load balancing, and tools like the Pricing Calculator
- What is the difference between management OF the cloud and management IN the cloud?
- Management OF the cloud is automation, monitoring, and self-healing; management IN the cloud is the tools (portal, CLI, APIs, templates) you use to control resources
- Which service type would a fully managed email platform like Microsoft 365 be?
- SaaS — finished software you consume without managing the platform or infrastructure
- Under the shared responsibility model, who patches the OS on an Azure VM?
- The customer — IaaS leaves the guest operating system to you
- Under the shared responsibility model, who patches the OS for a PaaS service?
- Microsoft — the provider manages the operating system and platform in PaaS
- What is a cloud workload?
- An application or service (and its resources) running in the cloud, such as a website, database, or batch job
- What does it mean to 'go global in minutes' with the cloud?
- You can deploy resources to regions worldwide quickly to reduce latency and meet local requirements, without building datacenters
- What is the trade-off of choosing IaaS over PaaS?
- More control and flexibility (you manage the OS) but more responsibility for patching, scaling, and maintenance
- What is the main reason organizations adopt cloud agility?
- They can provision and reconfigure resources in minutes instead of waiting weeks to buy and install hardware
- What is an Azure resource provider?
- A service that supplies Azure resources (such as Microsoft.Compute for VMs); ARM uses providers to create and manage resources
- What is Azure Virtual WAN?
- A networking service that brings many networking, security, and routing functions together to connect branches and VNets at scale
- What is a public endpoint?
- An endpoint that exposes a service over the public internet, reachable by a public IP address
- What is a private endpoint?
- A network interface that connects you privately to an Azure service using a private IP inside your VNet, keeping traffic off the public internet
- What is Azure Bastion?
- A service that provides secure RDP and SSH access to VMs directly in the portal without exposing public IP addresses
- What is a subnet within a VNet?
- A range of IP addresses that segments a virtual network so you can group and secure resources separately
- What is Azure Application Gateway?
- A web traffic load balancer that manages traffic to web applications, with features like SSL termination and a web application firewall
- What is Azure Load Balancer?
- A service that distributes inbound network traffic across backend resources to improve availability and scale
- What is the difference between Azure Files and Azure Disk Storage?
- Azure Files offers shared file shares many machines can mount over SMB/NFS; Disk Storage is a block disk attached to a single VM
- What is Azure NetApp Files?
- A high-performance, fully managed file storage service for enterprise workloads requiring low latency
- What is Azure Data Box?
- A physical device used to transfer very large amounts of data into Azure when network transfer is impractical
- What is AzCopy?
- A command-line tool for copying data to and from Azure Storage (blobs and files) efficiently
- What is Azure Storage Explorer?
- A standalone app that provides a graphical interface to manage Azure Storage data across accounts
- What is Azure File Sync?
- A service that synchronizes on-premises file servers with Azure Files, keeping a cloud copy and freeing local space
- What is the resource required by every Azure Virtual Machine besides compute?
- Storage (a disk), networking (a NIC and virtual network), and an OS image are all required to run a VM
- What is Azure Virtual Desktop best suited for?
- Delivering secure, cloud-hosted Windows desktops and apps to users on any device, ideal for remote or contract workers
- When should you use App Service instead of a VM for a web app?
- When you want managed hosting with built-in scaling and deployment and don't need control of the underlying OS
- What is the difference between Microsoft Entra ID and Microsoft Entra Domain Services?
- Entra ID is cloud identity using modern protocols; Entra Domain Services provides managed domain features (like LDAP and domain join) without running domain controllers
- What is passwordless authentication?
- Signing in without a password using methods like Windows Hello, the Microsoft Authenticator app, or FIDO2 security keys
- What is the purpose of an external identity (B2B/B2C)?
- B2B lets partner guests use their own credentials to access your resources; B2C lets customers sign in to your apps with their identities
- Which Azure service runs containerized apps at scale with orchestration?
- Azure Kubernetes Service (AKS)
- Which Azure compute option requires the least management for a single container?
- Azure Container Instances (ACI)
- What is Azure Cosmos DB best used for?
- Globally distributed, low-latency NoSQL applications needing elastic scale across many regions
- What is Azure SQL Database?
- A fully managed PaaS relational database based on the SQL Server engine, with automated patching, backups, and scaling
- Which Azure storage redundancy survives a region-wide outage with the highest durability?
- Geo-zone-redundant storage (GZRS) — zone redundancy in the primary region plus a copy in the paired region
- What determines which services and prices are available where you deploy?
- The Azure region — service availability, data residency, and pricing all vary by region
- What does Azure DNS provide?
- Hosting and resolution of DNS domains using Microsoft's global network of name servers
- What connects two VNets so resources use private IPs as if on one network?
- Virtual network (VNet) peering
- What is a managed disk in Azure?
- A block storage volume managed by Azure and attached to a VM, where Azure handles storage account management behind the scenes
- Which storage tier is cheapest for data accessed less than once a quarter but still online?
- The cool or cold tier; the archive tier is cheaper still but is offline and must be rehydrated
- What is the smallest unit of the Azure management hierarchy?
- A resource — a single service instance like a VM or storage account
- How does governance applied at a management group reach a VM?
- Policies and access at the management group are inherited down to subscriptions, then resource groups, then the resource
- What is a key reason to use multiple subscriptions?
- To separate billing and apply different governance and limits to different environments or departments
- What service should you use to securely connect to a VM without a public IP?
- Azure Bastion
- Which connectivity option offers consistent latency and high bandwidth by avoiding the internet?
- Azure ExpressRoute
- What is a NIC in the context of an Azure VM?
- A network interface card that connects a VM to a virtual network so it can communicate
- Which database service gives near-full SQL Server compatibility for lift-and-shift?
- Azure SQL Managed Instance
- What is the benefit of containers over VMs?
- They are lightweight, fast to start, and portable because they share the host OS kernel instead of bundling a full OS
- Which service hosts web apps and APIs as a managed platform?
- Azure App Service
- Which identity feature reduces the number of passwords a user must enter?
- Single sign-on (SSO)
- Which feature blocks or allows access based on conditions like device and location?
- Conditional Access
- What is Microsoft Cost Management used for?
- Monitoring, allocating, budgeting, and optimizing Azure spending across subscriptions
- Which calculator estimates the cost of a NEW Azure deployment?
- The Azure Pricing Calculator
- Which calculator compares on-premises costs to Azure?
- The Total Cost of Ownership (TCO) Calculator
- What is the main factor that often surprises people in Azure billing?
- Data egress (outbound transfer) is charged, while inbound (ingress) is usually free
- How can tags reduce cost confusion?
- They label resources so spend can be grouped and reported by department, project, or environment
- What is an Azure reservation?
- A one- or three-year commitment to a resource for a significant discount over pay-as-you-go
- When should you set a budget in Cost Management?
- Whenever you want to be alerted before spending crosses a planned threshold to avoid surprise bills
- Which tool ENFORCES that resources meet configuration standards?
- Azure Policy
- Which tool controls WHO can perform actions on resources?
- Azure role-based access control (RBAC)
- Which tool PREVENTS accidental deletion of a single resource?
- A resource lock (CanNotDelete / Delete lock)
- What does a ReadOnly resource lock allow?
- Only reading the resource — no modifications and no deletion
- At what scopes can RBAC and Azure Policy be applied?
- Management group, subscription, resource group, or resource — and they are inherited downward
- What is the principle of least privilege?
- Grant each identity only the minimum access required to do its job, reducing risk
- What is Microsoft Purview used for in governance?
- Discovering, cataloging, classifying, and managing data across on-premises, multicloud, and SaaS sources
- What does Azure Advisor recommend?
- Personalized best practices across cost, security, reliability, performance, and operational excellence
- What does Azure Service Health tell you?
- Whether Azure outages, planned maintenance, or health advisories are affecting your specific resources
- What does Azure Monitor collect?
- Metrics and logs (telemetry) from Azure and on-premises resources for analysis, alerting, and visualization
- Which Azure Monitor feature queries collected log data?
- Log Analytics
- Which Azure Monitor feature monitors a live application's performance?
- Application Insights
- What is the difference between Azure Service Health and Azure Monitor?
- Service Health reports Azure platform issues affecting you; Monitor reports your own resources' and apps' performance telemetry
- What is the Azure portal?
- A web-based graphical console for creating, managing, and monitoring Azure resources
- What is Azure Cloud Shell?
- A browser-based, authenticated command-line environment (Bash or PowerShell) for managing Azure
- What is infrastructure as code (IaC)?
- Defining and deploying infrastructure through declarative files (like ARM templates or Bicep) for repeatable, consistent results
- What is Azure Resource Manager (ARM)?
- The deployment and management layer all Azure management requests pass through for consistent control and access
- What is an ARM template?
- A JSON file that defines Azure resources declaratively so the same environment can be deployed repeatedly
- What is Azure Bicep?
- A domain-specific language that simplifies infrastructure as code with cleaner syntax than ARM JSON
- What is Azure Arc used for in governance?
- Extending Azure management, policy, and RBAC to servers and clusters running on-premises, at the edge, or in other clouds
- What does a 99.9% SLA roughly permit for downtime?
- About 8.7 hours per year (roughly 43 minutes per month)
- How do you improve an application's composite SLA?
- Add redundancy across availability zones or regions and remove single points of failure
- Do free or preview Azure services carry a financially backed SLA?
- No — free tier and preview services typically have no financially backed SLA
- What is the Azure Hybrid Benefit?
- A licensing benefit that lets you reuse existing Windows Server and SQL Server licenses to lower Azure cost
- What is the secure score in Microsoft Defender for Cloud?
- A measurement of your security posture; following its recommendations raises the score and reduces risk
- What is just-in-time VM access?
- Opening management ports to a VM only when needed and for a limited time, reducing the attack surface
- What governance question does Azure Policy answer vs. RBAC?
- Azure Policy answers 'what configuration may resources have?'; RBAC answers 'who may perform which actions?'