AZ-900 Day 1 Cloud Concepts

Which of the following is a characteristic of the Infrastructure as a Service (IaaS) model?

• Provides a platform for developers to build applications

• Offers virtualized computing resources over the internet

• Delivers software applications over the internet

• Provides a complete development environment in the cloud

Answer explanation

The IaaS model specifically offers virtualized computing resources over the internet, allowing users to rent servers and storage. Other options describe different cloud service models like PaaS or SaaS.

What is the primary benefit of using Platform as a Service (PaaS)?

• Full control over the operating system

• Simplified application development and deployment

• Direct access to physical hardware

• Reduced need for software updates

Answer explanation

The primary benefit of using PaaS is that it simplifies application development and deployment by providing a platform with built-in tools and services, allowing developers to focus on coding rather than managing infrastructure.

Which Azure service is used for hosting web applications?

• Azure Functions

• Azure Virtual Machines

• Azure App Service

• Azure Blob Storage

Answer explanation

Azure App Service is specifically designed for hosting web applications, providing a fully managed platform for building, deploying, and scaling web apps. Other options like Azure Functions and Virtual Machines serve different purposes.

What is the main advantage of using cloud computing?

• Increased capital expenditure

• Scalability and flexibility

• Limited access to resources

• Fixed pricing models

Answer explanation

The main advantage of cloud computing is its scalability and flexibility, allowing businesses to easily adjust resources based on demand, unlike fixed pricing models or limited access to resources.

Which of the following is a cloud deployment model?

• Public Cloud

• Hybrid Cloud

• Private Cloud

• All of the above

Answer explanation

All of the options listed—Public Cloud, Hybrid Cloud, and Private Cloud—are recognized cloud deployment models. Therefore, the correct answer is 'All of the above'.

What is the purpose of Azure's pricing calculator?

• To estimate the cost of Azure services

• To provide technical support

• To manage Azure resources

• To monitor application performance

Answer explanation

The purpose of Azure's pricing calculator is to estimate the cost of Azure services, helping users understand potential expenses before using the platform.

Which Azure service provides a scalable and secure database solution?

• Azure Cosmos DB

• Azure Logic Apps

• Azure DevOps

• Azure Functions

Answer explanation

Azure Cosmos DB is a globally distributed, multi-model database service designed for scalability and security, making it the ideal choice for a scalable and secure database solution compared to the other options.

What is the role of Azure Support Plans?

• To provide software development tools

• To offer technical support and guidance

• To manage billing and subscriptions

• To deploy virtual machines

Answer explanation

Azure Support Plans are designed to offer technical support and guidance to users, helping them resolve issues and optimize their use of Azure services, making this the correct choice.

Which of the following is a feature of Software as a Service (SaaS)?

• Users manage the underlying infrastructure

• Software is delivered over the internet

• Requires installation on local devices

• Provides a development platform

Answer explanation

Software as a Service (SaaS) is characterized by software being delivered over the internet, allowing users to access applications without managing the underlying infrastructure or installing software locally.

What is the primary function of Azure Virtual Machines?

• To store unstructured data

• To run applications in a virtualized environment

• To provide identity management

• To analyze data streams

Answer explanation

The primary function of Azure Virtual Machines is to run applications in a virtualized environment, allowing users to deploy and manage applications without the need for physical hardware.