AZ 900 QNA MANUS

Which of the following best describes cloud computing?

• A. A method for storing data on local servers within a private network.

• B. The on-demand delivery of compute power, database storage, applications, and other IT resources through a cloud services platform via the internet with pay-as-you-go pricing.

• C. A dedicated physical server infrastructure managed entirely by the customer.

• D. A peer-to-peer network for sharing files and resources among connected devices.

Answer explanation

B best describes cloud computing as it emphasizes on-demand delivery of IT resources via the internet, highlighting the flexibility and pay-as-you-go model that defines cloud services.

Which cloud model offers the MOST control over the underlying infrastructure, but also requires the MOST management effort from the customer?

• Software as a Service (SaaS)

• Platform as a Service (PaaS)

• Infrastructure as a Service (IaaS)

• Function as a Service (FaaS)

Answer explanation

Infrastructure as a Service (IaaS) provides the most control over the underlying infrastructure, allowing customers to manage servers, storage, and networking. However, this also means customers must handle more management tasks compared to other models.

In the shared responsibility model, for which of the following is the customer ALWAYS responsible when using ANY cloud service (IaaS, PaaS, or SaaS)?

• A. Physical security of the datacenter

• B. Network controls (e.g., firewalls)

• C. Information and data

• D. Operating system patching

Answer explanation

In the shared responsibility model, customers are always responsible for their information and data, regardless of the cloud service type (IaaS, PaaS, or SaaS). This includes data security and compliance.

Which cloud deployment model is characterized by cloud resources used exclusively by a single organization?

• Public cloud

• Private cloud

• Hybrid cloud

• Community cloud

Answer explanation

The private cloud model is designed for exclusive use by a single organization, providing dedicated resources and enhanced security, unlike public clouds which are shared among multiple users.

What is the primary benefit of the consumption-based model in cloud computing?

• Predictable fixed monthly costs.

• Customers pay only for the resources they use.

• Elimination of all operational expenses.

• Ownership of the underlying hardware infrastructure.

Answer explanation

The primary benefit of the consumption-based model is that customers pay only for the resources they use, allowing for cost efficiency and flexibility, unlike fixed costs or ownership of hardware.

Which of the following is a benefit of cloud computing that allows resources to be scaled up or down automatically based on demand?

• Geo-distribution

• Elasticity

• Low latency

• Disaster recovery

Answer explanation

Elasticity in cloud computing allows resources to automatically scale up or down based on demand, ensuring efficient use of resources and cost-effectiveness. This is a key benefit that enhances flexibility.

A company wants to deploy a web application to Azure but wants to minimize the administrative overhead of managing virtual machines and operating systems. Which cloud service type would be MOST appropriate?

• Infrastructure as a Service (IaaS)

• Platform as a Service (PaaS)

• Software as a Service (SaaS)

• On-premises

Answer explanation

Platform as a Service (PaaS) is ideal for deploying web applications with minimal management of infrastructure, as it abstracts the underlying virtual machines and operating systems, reducing administrative overhead.

Which of the following describes the ability of a system to recover gracefully from failures and continue to function?

• Scalability

• Elasticity

• High Availability

• Reliability

Answer explanation

Reliability refers to a system's ability to recover from failures and continue functioning effectively. It ensures that services remain available and operational, even in the face of issues.

Your company is considering migrating its on-premises applications to the cloud. They are particularly concerned about maintaining data residency and having dedicated compute resources. Which cloud model would best address these concerns while still leveraging some cloud benefits?

• Public Cloud

• Private Cloud

• Hybrid Cloud

• Community Cloud

Answer explanation

A Private Cloud offers dedicated compute resources and ensures data residency, addressing the company's concerns while still leveraging cloud benefits like scalability and flexibility.

Which of the following is a characteristic of serverless computing?

• You provision and manage servers.

• You pay for idle compute time.

• The cloud provider automatically manages the underlying infrastructure.

• Applications are deployed as long-running processes.

Answer explanation

In serverless computing, the cloud provider automatically manages the underlying infrastructure, allowing developers to focus on code without worrying about server management. This distinguishes it from traditional computing models.