Free AZ-900: Microsoft Azure Questions and Answers 1 — Questions and Answers

Question 1: Your organization intends to use Azure to host many custom applications. The applications will give the company's clients with invoicing services. Several required programs and services will be installed for each application. For all of the applications, you must recommend a cloud deployment solution. What would you suggest?

Infrastructure as a Service (laaS) (Correct answer)
Platform as a Service (PaaS)
Software as a Service (SaaS)
none of the above

Correct answer: Infrastructure as a Service (laaS)

Infrastructure as a Service (IaaS) provides the fundamental computing resources like virtual machines, storage, and networking, giving organizations maximum control over their operating systems and applications. Since the company needs to install specific programs and services for their custom applications, IaaS is the most suitable model as it allows for this level of customization and management.

Question 2: You have numerous servers on your on-premises network. You intend to move all of your servers to Azure. You must propose a strategy to ensure that some servers are available if a single Azure data center is offline for an extended period of time. What should your recommendation include?

elasticity
fault tolerance (Correct answer)
low latency
scability

Correct answer: fault tolerance

Fault tolerance is the ability of a system to continue operating without interruption in the event of a component failure, such as an entire data center going offline. To achieve this in Azure, resources are deployed across multiple Availability Zones or regions, ensuring redundancy and continuous availability even during significant outages. This strategy directly addresses the requirement for server availability during a data center failure.

Question 3: Which of the following provides an opportunity for all Azure customers to try out the beta and other pre-release features?

Private Preview
Public Preview (Correct answer)
General availability
None of the above

Correct answer: Public Preview

Public Preview is an Azure release stage where new services, features, or updates are made available to all Azure customers for testing and feedback. This allows a broad audience to try out pre-release features and provide input, helping Microsoft refine the offering before its general availability. Private Preview is limited to a select group, and General Availability is the final, fully supported release.

Question 4: Availability zones are available in every Azure region. Is the statement correct?

No (Correct answer)
Yes

Correct answer: No

No, Availability Zones are not available in every Azure region. They are offered in specific regions that are designed to support them, providing physical separation and independent power, cooling, and networking within a region. Users must check the Azure documentation to confirm which regions support Availability Zones for their deployment needs.

Question 5: A data center is no longer necessary for an organization that hosts its infrastructure ________.

on a Hyper-V host
in the public cloud (Correct answer)
in a private cloud
in a hybrid cloud

Correct answer: in the public cloud

When an organization hosts its infrastructure in the public cloud, a third-party provider like Azure owns and manages all the underlying physical hardware, facilities, and networking. This eliminates the need for the organization to build, maintain, or operate its own on-premises data centers. Public cloud services abstract away the physical infrastructure, allowing businesses to focus on their applications.

Question 6: Due to their small size, small businesses frequently have a _____ pricing per unit.

high (Correct answer)
low
medium
none of the above

Correct answer: high

Cloud providers often implement volume-based pricing, where the cost per unit decreases as the consumption of resources increases. Consequently, small businesses, which typically consume fewer resources, often face a higher pricing per unit compared to larger enterprises that benefit from significant volume discounts. This tiered pricing structure is common across many cloud services.

Question 7: Operational expenditure (OpEx) costs include things like building a data center infrastructure. Is the statement correct?

No (Correct answer)
Yes

Correct answer: No

No, building a data center infrastructure is considered a Capital Expenditure (CapEx), not an Operational Expenditure (OpEx). CapEx involves significant upfront investments in physical assets that provide long-term value, such as buildings, servers, and cooling systems. OpEx refers to ongoing, day-to-day costs of running a business, like utility bills, salaries, or cloud service subscriptions.

Question 8: You're using IaaS to run a virtual machine in a public cloud. Which model is the most accurate representation of how that resource is managed?

Cloud user management model
Shared responsibility model (Correct answer)
User management model
None of the above

Correct answer: Shared responsibility model

The Shared Responsibility Model clearly defines the division of security and management tasks between the cloud provider (Azure) and the cloud user. For IaaS, Azure is responsible for the underlying physical infrastructure, while the user is responsible for managing the operating system, applications, data, and network configuration within their virtual machines. This model ensures both parties understand their roles in maintaining the resource.

Question 9: In availability zones, only virtual machines running Windows Server can be established. Is the statement correct?

No (Correct answer)
Yes

Correct answer: No

No, Availability Zones support a wide range of Azure resources, including virtual machines running various operating systems, not just Windows Server. They are designed to provide high availability and fault tolerance for diverse workloads, encompassing both Windows and Linux-based virtual machines. This flexibility allows users to deploy a broad spectrum of applications with zone redundancy.

Question 10: There are data centers for your business in New York and Los Angeles. The business subscribes to Microsoft Azure. For site resilience, you are setting up the two data centers as geo-clustered sites. ✑ You must suggest a redundant Azure storage solution. ✑ You need to store the following types of data: ✑ Data must be kept on several nodes. Data must be kept on nodes located in different regions. Both the primary location and the secondary site can read data. Which option for Azure stored redundancy should be suggested?

Read-only geo-redundant storage (Correct answer)
Locally redundant storage
Geo-redundant storage
Zone-redundant storage

Correct answer: Read-only geo-redundant storage

Read-only geo-redundant storage (RA-GRS) replicates data to a secondary region, providing robust disaster recovery capabilities. Crucially, RA-GRS allows read access to the data in both the primary and secondary regions. This feature is essential for geo-clustered sites where both locations need to be able to read data for resilience and business continuity during an outage in the primary region.

Question 11: What are the two Azure resources that provide availability zones? Each accurate response offers an entire resolution.

Azure subscriptions
Azure SQL databases (Correct answer)
virtual machines (Correct answer)
resource groups

Correct answer: Azure SQL databases

Availability Zones provide physical separation within an Azure region to protect against data center failures. Key Azure resources that can leverage Availability Zones for high availability include Virtual Machines (VMs), which can be distributed across zones, and Azure SQL Databases, which can be configured for zone-redundant deployments. These resources ensure applications and data remain accessible even if one zone experiences an outage.

Question 12: What Azure resource includes a virtual processor, memory, storage, and networking resources and is a software simulation of a computer?

an App Service
a container
a function
a virtual machine (Correct answer)

Correct answer: a virtual machine

A virtual machine (VM) is a software emulation of a physical computer, complete with its own operating system, virtual processor, memory, storage, and network interfaces. Azure VMs allow users to run various applications and workloads in the cloud, offering the flexibility and control of a dedicated server without the need to manage physical hardware.

Question 13: Which Azure compute service can you employ in order to set up and maintain a group of identical virtual machines?

Azure Virtual Machine Scale Sets (Correct answer)
availability sets
availability zones
Azure Container Instances

Correct answer: Azure Virtual Machine Scale Sets

Azure Virtual Machine Scale Sets allow you to deploy and manage a group of identical, load-balanced virtual machines. They enable automatic scaling of VM instances based on demand or a schedule, making them ideal for large-scale, highly available, and elastic workloads. This service simplifies the management of multiple identical VMs, ensuring consistent performance and availability.

Question 14: Which situation qualifies as a VPN gateway use case?

partitioning a virtual network's address space
communicating between Azure resources
connecting an on-premises datacenter to an Azure virtual network (Correct answer)
filtering outbound network traffic

Correct answer: connecting an on-premises datacenter to an Azure virtual network

An Azure VPN Gateway is primarily used to establish secure, encrypted connections between an on-premises network (like a corporate data center) and an Azure virtual network over the public internet. This creates a site-to-site connection, allowing resources in Azure to communicate securely with resources in the on-premises environment as if they were on the same network.

Question 15: You must permit communication between resources on two distinct Azure virtual networks. What settings should you make?

peering (Correct answer)
a network security group (NSG)
service endpoints
a point-to-site VPN

Correct answer: peering

Virtual network peering connects two or more Azure virtual networks, enabling resources in each network to communicate with each other directly using private IP addresses. This connection is low-latency, high-bandwidth, and traffic between peered networks remains on the Microsoft backbone network, ensuring secure and efficient communication without traversing the public internet.

Question 16: What can you use to link an Azure virtual network to an Azure resource, such as an Azure SQL database?

service endpoints (Correct answer)
peering
ExpressRoute
network security groups (NSGs)

Correct answer: service endpoints

Virtual Network service endpoints extend your virtual network's private address space and identity to Azure services, such as Azure SQL Database, over a direct connection. This allows you to secure your critical Azure service resources to only your virtual networks, enhancing security by keeping traffic within the Azure backbone network and preventing public internet access to those services.

Free AZ-900: Microsoft Azure Questions and Answers 1

Your organization intends to use Azure to host many custom applications.
The applications will give the company's clients with invoicing services.
Several required programs and services will be installed for each application.
For all of the applications, you must recommend a cloud deployment solution.
What would you suggest?