Microsoft Azure
AZ-900 Azure Fundamentals
Cloud Concepts, Azure Services, Security, Pricing & Support
Exam Code: AZ-900 | 60 Questions & Verified Answers
Covers All Official Exam Objectives
,Domain 1: Cloud Concepts (25–30%)
Cloud Models & Service Types
Q1. What is the definition of cloud computing according to Microsoft Azure?
A. Storing files on a USB drive
B. Delivery of computing services over the internet — including servers, storage, databases,
networking, software, analytics, and intelligence
C. Running applications on a local server
D. Using the internet for email only
Answer: B. Delivery of computing services over the internet — including servers, storage,
databases, networking, software, analytics, and intelligence
Cloud computing delivers on-demand access to IT resources over the internet with pay-as-you-go
pricing.
Benefits: faster innovation, flexible resources, economies of scale.
Microsoft Azure is one of the three major cloud providers (AWS, Azure, GCP).
Q2. What is the difference between a public cloud, private cloud, and hybrid cloud?
A. Public: free; Private: paid; Hybrid: combination
B. Public: multi-tenant cloud managed by a provider accessible over internet; Private: single-
org dedicated cloud; Hybrid: combination of both
C. Public cloud is less secure than private cloud
D. Hybrid cloud requires physical servers only
Answer: B. Public: multi-tenant cloud managed by a provider accessible over internet;
Private: single-org dedicated cloud; Hybrid: combination of both
Public cloud (Azure): managed by Microsoft, shared infrastructure, pay-as-you-go.
Private cloud: hosted in your own data center or by a provider exclusively for your org.
Hybrid cloud: connect on-premises/private cloud to public cloud — use Azure for burst capacity.
Multi-cloud: use multiple cloud providers (Azure + AWS + GCP).
Q3. What does 'IaaS' stand for and what does the cloud provider manage?
A. Internet as a Service — provider manages everything
B. Infrastructure as a Service — provider manages physical hardware, network, and
virtualization; customer manages OS, middleware, apps, data
C. Intelligence as a Service — provider manages AI models
D. Integration as a Service — connects applications
Answer: B. Infrastructure as a Service — provider manages physical hardware, network, and
virtualization; customer manages OS, middleware, apps, data
IaaS: most control/responsibility for customer. Azure VMs, Azure Virtual Network.
PaaS: provider manages OS and middleware; customer manages applications and data. Azure App
Service, Azure SQL Database.
SaaS: provider manages everything; customer uses the application. Microsoft 365, Dynamics 365.
Responsibility decreases from IaaS to SaaS as provider manages more.
, Q4. What does the 'consumption-based model' mean in cloud computing?
A. The more services you consume, the less you pay
B. You only pay for the IT resources you use — no upfront cost for infrastructure
C. You purchase a fixed amount of resources per year
D. Resources are consumed and cannot be scaled
Answer: B. You only pay for the IT resources you use — no upfront cost for infrastructure
Consumption-based (OpEx) vs Capital-based (CapEx — buying physical servers upfront).
Benefits: no wasted spend on idle resources, cost reflects actual usage, easy to scale.
Cloud providers meter usage and bill accordingly — per hour, per GB, per request.
Q5. What are the key benefits of high availability in cloud computing?
A. Faster application development
B. Ensuring services remain operational with minimal downtime, often guaranteed through
SLAs
C. Reducing the cost of cloud services
D. Providing more storage capacity
Answer: B. Ensuring services remain operational with minimal downtime, often guaranteed
through SLAs
Azure provides SLAs (Service Level Agreements) guaranteeing uptime percentages — e.g.,
99.99% for Azure Virtual Machines with Availability Zones.
99.9% SLA = ~8.7 hours downtime per year. 99.99% = ~52 minutes. 99.999% = ~5 minutes.
Achieved through redundancy: multiple datacenters, Availability Zones, Region pairs.
Domain 2: Azure Architecture & Services (35–40%)
Core Azure Services
Q6. What is an Azure Region?
A. A single Azure data center
B. A geographic area containing one or more Azure data centers connected with a low-latency
network
C. A billing boundary for Azure services
D. A type of Azure subscription
Answer: B. A geographic area containing one or more Azure data centers connected with a
low-latency network
Azure has 60+ regions globally — most geographic coverage of any cloud provider.
Each Region has multiple data centers for redundancy.
When deploying resources, choose a Region closest to your users for low latency.
Some services require specific Regions or are globally available (Azure AD, Traffic Manager).
Q7. What is an Azure Availability Zone?
A. A single server rack in a data center
B. Physically separate data centers within an Azure Region with independent power, cooling,
and networking — for high availability
AZ-900 Azure Fundamentals
Cloud Concepts, Azure Services, Security, Pricing & Support
Exam Code: AZ-900 | 60 Questions & Verified Answers
Covers All Official Exam Objectives
,Domain 1: Cloud Concepts (25–30%)
Cloud Models & Service Types
Q1. What is the definition of cloud computing according to Microsoft Azure?
A. Storing files on a USB drive
B. Delivery of computing services over the internet — including servers, storage, databases,
networking, software, analytics, and intelligence
C. Running applications on a local server
D. Using the internet for email only
Answer: B. Delivery of computing services over the internet — including servers, storage,
databases, networking, software, analytics, and intelligence
Cloud computing delivers on-demand access to IT resources over the internet with pay-as-you-go
pricing.
Benefits: faster innovation, flexible resources, economies of scale.
Microsoft Azure is one of the three major cloud providers (AWS, Azure, GCP).
Q2. What is the difference between a public cloud, private cloud, and hybrid cloud?
A. Public: free; Private: paid; Hybrid: combination
B. Public: multi-tenant cloud managed by a provider accessible over internet; Private: single-
org dedicated cloud; Hybrid: combination of both
C. Public cloud is less secure than private cloud
D. Hybrid cloud requires physical servers only
Answer: B. Public: multi-tenant cloud managed by a provider accessible over internet;
Private: single-org dedicated cloud; Hybrid: combination of both
Public cloud (Azure): managed by Microsoft, shared infrastructure, pay-as-you-go.
Private cloud: hosted in your own data center or by a provider exclusively for your org.
Hybrid cloud: connect on-premises/private cloud to public cloud — use Azure for burst capacity.
Multi-cloud: use multiple cloud providers (Azure + AWS + GCP).
Q3. What does 'IaaS' stand for and what does the cloud provider manage?
A. Internet as a Service — provider manages everything
B. Infrastructure as a Service — provider manages physical hardware, network, and
virtualization; customer manages OS, middleware, apps, data
C. Intelligence as a Service — provider manages AI models
D. Integration as a Service — connects applications
Answer: B. Infrastructure as a Service — provider manages physical hardware, network, and
virtualization; customer manages OS, middleware, apps, data
IaaS: most control/responsibility for customer. Azure VMs, Azure Virtual Network.
PaaS: provider manages OS and middleware; customer manages applications and data. Azure App
Service, Azure SQL Database.
SaaS: provider manages everything; customer uses the application. Microsoft 365, Dynamics 365.
Responsibility decreases from IaaS to SaaS as provider manages more.
, Q4. What does the 'consumption-based model' mean in cloud computing?
A. The more services you consume, the less you pay
B. You only pay for the IT resources you use — no upfront cost for infrastructure
C. You purchase a fixed amount of resources per year
D. Resources are consumed and cannot be scaled
Answer: B. You only pay for the IT resources you use — no upfront cost for infrastructure
Consumption-based (OpEx) vs Capital-based (CapEx — buying physical servers upfront).
Benefits: no wasted spend on idle resources, cost reflects actual usage, easy to scale.
Cloud providers meter usage and bill accordingly — per hour, per GB, per request.
Q5. What are the key benefits of high availability in cloud computing?
A. Faster application development
B. Ensuring services remain operational with minimal downtime, often guaranteed through
SLAs
C. Reducing the cost of cloud services
D. Providing more storage capacity
Answer: B. Ensuring services remain operational with minimal downtime, often guaranteed
through SLAs
Azure provides SLAs (Service Level Agreements) guaranteeing uptime percentages — e.g.,
99.99% for Azure Virtual Machines with Availability Zones.
99.9% SLA = ~8.7 hours downtime per year. 99.99% = ~52 minutes. 99.999% = ~5 minutes.
Achieved through redundancy: multiple datacenters, Availability Zones, Region pairs.
Domain 2: Azure Architecture & Services (35–40%)
Core Azure Services
Q6. What is an Azure Region?
A. A single Azure data center
B. A geographic area containing one or more Azure data centers connected with a low-latency
network
C. A billing boundary for Azure services
D. A type of Azure subscription
Answer: B. A geographic area containing one or more Azure data centers connected with a
low-latency network
Azure has 60+ regions globally — most geographic coverage of any cloud provider.
Each Region has multiple data centers for redundancy.
When deploying resources, choose a Region closest to your users for low latency.
Some services require specific Regions or are globally available (Azure AD, Traffic Manager).
Q7. What is an Azure Availability Zone?
A. A single server rack in a data center
B. Physically separate data centers within an Azure Region with independent power, cooling,
and networking — for high availability
