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

Question 1: What are the two most prevalent benefits of cloud computing? Each accurate response offers an entire resolution.

geo-distribution (Correct answer)
physical access to servers
elimination of horizontal scaling
high availability (Correct answer)

Correct answer: geo-distribution

Cloud computing offers numerous advantages, with geo-distribution and high availability being two prevalent benefits. Geo-distribution allows deploying applications across multiple global regions, bringing services closer to users and improving disaster recovery. High availability ensures applications remain accessible and operational even if individual components fail, often achieved through redundancy and automatic failover mechanisms.

Question 2: What benefit does cloud computing offer over on-premises installations?

You can work from multiple workstations.
You own your CPUs.
You can scale more quickly. (Correct answer)
You have full access in case of internet outage.

Correct answer: You can scale more quickly.

Cloud computing provides on-demand access to resources, allowing users to rapidly increase or decrease computing power, storage, or network capacity as needed. This agility means businesses can respond to changing demands almost instantly without the significant upfront investment and procurement time associated with on-premises hardware. This rapid scalability is a key differentiator and a major advantage for dynamic workloads.

Question 3: If you have servers that are physically situated in your company's on-site datacenter but move some of them to the cloud, which cloud deployment model are you using?

public cloud
hybrid cloud (Correct answer)
private cloud
none of the above

Correct answer: hybrid cloud

A hybrid cloud deployment model combines on-premises infrastructure (private cloud) with public cloud services. In this scenario, some servers remain in the company's datacenter, while others are migrated to a public cloud provider. This allows organizations to leverage the benefits of both environments, such as maintaining sensitive data on-premises while utilizing cloud scalability for other workloads.

Question 4: Choose the response that fully completes the statement. It's known as ____________ to expand the computing power of an app by adding RAM or CPUs to a virtual machine.

high availability
horizontal scaling
vertical scaling (Correct answer)
disaster recovery

Correct answer: vertical scaling

Vertical scaling, also known as "scaling up," involves increasing the capacity of an existing resource, such as a virtual machine. This is achieved by adding more RAM, CPU cores, or storage to that single instance. While it enhances the power of an individual machine, it has limits based on the maximum capacity of a single server.

Question 5: Choose the response that fully completes the statement. _____________ is the rapid deployment and configuration of cloud-based resources in response to changing business requirements.

high availability
agility (Correct answer)
scalability
elasticity

Correct answer: agility

Agility in cloud computing refers to the ability to quickly and easily provision, de-provision, and configure IT resources to adapt to evolving business needs. This rapid responsiveness allows organizations to innovate faster, deploy new applications quickly, and adjust their infrastructure without lengthy procurement cycles or manual setup. It's a key benefit that enables businesses to be more competitive and responsive.

Question 6: What do the aspects of data replication, geo-distribution, and cloud-based backup services entail?

a disaster recovery plan (Correct answer)
an elastic application configuration
a cost reduction plan
a hybrid cloud deployment

Correct answer: a disaster recovery plan

Data replication, geo-distribution, and cloud-based backup services are all critical components of a robust disaster recovery plan. These strategies ensure that data and applications remain available and recoverable even in the event of a major outage, natural disaster, or cyberattack. By distributing data across multiple locations and maintaining backups, organizations can minimize downtime and data loss.

Question 7: What factors affect high availability in a public cloud environment?

cloud-based backup retention limits
the service-level agreement (SLA) that you choose (Correct answer)
the vertical scalability of an app
capital expenditures

Correct answer: the service-level agreement (SLA) that you choose

In a public cloud environment, the level of high availability for your services is primarily dictated by the Service Level Agreement (SLA) provided by the cloud vendor. The SLA specifies the guaranteed uptime, performance, and support levels for a given service. Choosing an SLA with a higher percentage of uptime directly impacts the availability and resilience of your applications and data.

Question 8: Choose the response that fully completes the statement. Automatically scaling a program to make sure it has the resources required to fulfill user demands is an example of _______.

geo-distribution
high availability
elasticity (Correct answer)
agility

Correct answer: elasticity

Elasticity in cloud computing refers to the ability to automatically and dynamically scale resources up or down to meet fluctuating demand. This means that an application can seamlessly acquire more resources during peak load and release them when demand decreases, optimizing both performance and cost. It's a key characteristic that allows cloud applications to handle unpredictable workloads efficiently.

Question 9: Choose the response that fully completes the statement. ____________ refers to expanding an application's capacity by adding extra virtual machines

high availability
vertical scaling
agility
horizontal scaling (Correct answer)

Correct answer: horizontal scaling

Horizontal scaling, also known as "scaling out," involves increasing an application's capacity by adding more instances of a resource, such as additional virtual machines or containers. Instead of making a single machine more powerful, you distribute the workload across multiple machines. This approach is highly effective for handling increased traffic and improving fault tolerance.

Question 10: Which two deployment patterns place management of the operating systems that run the applications on the shoulders of the customers? Each accurate response offers an entire resolution.

on-premises (Correct answer)
software as a service (SaaS)
infrastructure as a service (IaaS) (Correct answer)
platform as a service (PaaS)

Correct answer: on-premises

In both on-premises deployments and Infrastructure as a Service (IaaS) cloud models, the customer is responsible for managing the operating systems. For on-premises, the customer manages the entire stack, including hardware, OS, and applications. With IaaS, the cloud provider manages the underlying hardware and virtualization, but the customer is responsible for the operating system, applications, and data.

Question 11: Azure SQL Database uses which cloud service model?

software as a service (SaaS)
infrastructure as a service (IaaS)
platform as a service (PaaS) (Correct answer)
none of the above

Correct answer: platform as a service (PaaS)

Azure SQL Database is a Platform as a Service (PaaS) offering. With PaaS, Azure manages the underlying infrastructure, including the operating system, database engine, and hardware. Users only need to focus on developing and managing their data and applications, without worrying about server maintenance or patching, which simplifies database administration.

Question 12: What makes use of the cloud service concept known as infrastructure as a service (IaaS)?

Azure Cosmos DB
Microsoft Office 365
Azure App Services
Azure virtual machines (Correct answer)

Correct answer: Azure virtual machines

Azure Virtual Machines (VMs) are a prime example of Infrastructure as a Service (IaaS). With IaaS, Azure provides the virtualized computing resources, such as virtual machines, storage, and networking. Customers are responsible for installing and managing the operating systems, applications, and data on these VMs, giving them maximum control over their computing environment.

Question 13: Virtual networks fall under what category of cloud service?

platform as a service (PaaS)
software as a service (SaaS)
infrastructure as a service (IaaS) (Correct answer)
none of the above

Correct answer: infrastructure as a service (IaaS)

Virtual networks are a fundamental component of Infrastructure as a Service (IaaS). They provide the networking infrastructure that allows virtual machines and other resources to communicate with each other securely within the cloud and connect to on-premises networks. As part of IaaS, the cloud provider manages the underlying physical network hardware, while customers configure and manage the virtual network components.

Question 14: Choose the response that fully completes the statement. __________ is a region of Azure that contains physically distinct data centers.

Geographies
Availability zones (Correct answer)
Resource groups
Region pairs

Correct answer: Availability zones

Availability Zones are physically separate datacenters within an Azure region, each with independent power, cooling, and networking. They are designed to provide high availability and fault tolerance to applications and data. By deploying resources across multiple Availability Zones, applications can remain operational even if one datacenter experiences an outage, enhancing resilience.

Question 15: Choose the response that fully completes the statement. An area is matched with another region in the same __________ in a region pair.

datacenter
resource group
availability zone
geography (Correct answer)

Correct answer: geography

In Azure, a region pair consists of two regions within the same geography that are separated by hundreds of miles. This pairing is designed for disaster recovery and data residency purposes. If one region in a pair experiences a major outage, services can failover to the other region within the same geography, ensuring data residency compliance and business continuity.

Question 16: Choose the response that fully completes the statement. The Azure deployment and management service is _____________ .

Azure API Management
Azure Resource Manager (ARM) (Correct answer)
Azure AD
Azure Monitor

Correct answer: Azure Resource Manager (ARM)

Azure Resource Manager (ARM) is the deployment and management service for Azure. It provides a management layer that enables you to create, update, and delete resources in your Azure subscription. ARM allows you to organize resources into logical groups, apply access control, and deploy resources declaratively using templates, streamlining infrastructure management.

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

What are the two most prevalent benefits of cloud computing? Each accurate response offers an entire resolution.