(AZ-900 topic) Understand Cloud Concepts Flashcards
AZ-900 topic assess your ability to: Make an informed decision on which cloud services would best suit your needs, Understand the different categories of cloud services and how they differ from one another, Know the differences between the different classes of cloud computing Questions for this domain comprise 22% of the total questions for the AZ-900.
You are migrating your on-premises Microsoft Exchange email system to Office 365. What kind of cloud service would this be considered?
Software-as-a-Service (SaaS)
Software as a service (SaaS) allows users to connect to and use cloud-based apps over the Internet. Common examples are email, calendaring, and office tools (such as Microsoft Office 365).
You are looking to build and host your website on Azure without needing to manage the underlying infrastructure. Which type of Cloud service should you choose?
Platform as a Service (PaaS)
Platform as a service (PaaS) is a complete development and deployment environment in the cloud, with resources that enable you to deliver everything from simple cloud-based apps to sophisticated, cloud-enabled enterprise applications, all without you having to manage any of the underlying infrastructure or services.
Your company is migrating an internal web application to the cloud. The application requires specific configuration changes within the Operating System. Which cloud deployment solution would be most suitable?
Infrastructure as a Service (IaaS).
Only Infrastructure as a Service provides the required level of access to the Operating System. Platform as a Service (PaaS) is a complete development and deployment environment in the cloud, but does not provide the same level of Operating System access as an IaaS solution. Software as a service (SaaS) allows users to connect to and use cloud-based apps over the Internet but provides no access to the Operating System. Function as a Service (FaaS) such as Azure Functions are small single-purpose applications which do not provide Operating System access.
Which of the following services would be considered Software-as-a-Service (SaaS)?
choose 2
Virtual Machines
Office 365
Kubernetes
Azure Active Directory
Office 365
Azure Active Directory
Office 365 is considered as SaaS due to the level of provider responsibility. Azure Active Directory is considered as SaaS due to the level of provider responsibility.
Microsoft Office 365 is an example of which cloud deployment model?
SaaS
Software as a service (SaaS) allows users to connect to and use cloud-based apps over the internet. Common examples are email, calendar, and office tools, such as Microsoft Office 365.
Which of the following are viewed as benefits of Public Cloud computing?
choose 2
- You no longer require an IT department.
- Capex pricing model
- On demand capacity
- Globally scalable
- Higher costs
On demand capacity
Globally scalable
The ability to gain capacity on demand is a huge benefit to using Public Cloud computing, this has huge advantages over the limitations of on-premise infrastructure.
There are many benefits to utilizing the Cloud - such as having access to globally scalable on-demand capacity, and through the shared security model taking advantage of the knowledge and investment that Cloud providers have built into their product offerings.
Define the concept of “dynamic elasticity.”
A cloud service that responds quickly when demand increases and scales down when demand decreases.
Dynamic elasticity is defined as a cloud service that both quickly scales up and also back down in order to serve your changing workload patterns for the lowest cost.
You are the system administrator for T-Bones Restaurant Group, Inc. You currently have an on-premises data center that consists of 50 Windows servers running IIS and SQL Server. IT management has dictated that all systems should be moved to Azure in the coming year. They also state that only platform-as-a-service (PaaS) solutions should be implemented. Which of the following meet these requirements?
choose 2
- Azure Virtual Network
- Azure Virtual Machines
- Azure SQL Database
- Azure App Service
- Azure SQL Database
- Azure App Service
Azure SQL Database is a platform-as-a-service (PaaS) offering for relational database management and is a common solution for the migration of SQL.
Azure App Service is a platform-as-a-service (PaaS) offering for web services and is a common solution for the migration of IIS.
Which type of cloud service gives you the most flexibility and control over the solutions you implement?
IaaS
IaaS, or Infrastructure as a Service, is the most flexible of cloud services, allowing you the most control over the solutions you implement in Azure, where you can run your own virtual machines, and design your own storage. Platform as a Service (PaaS) manages the OS, Middleware, and Runtimes. Function as a Service (FaaS) is similar to PaaS in this respect. Software as a Service (SaaS) manages the Applications and Data.
Which of the following are characteristic of private clouds?
(choose 2)
- Improved security
- Lower costs
- Limited flexibility
- High scalability [Limited]
- Improved security
- High scalability [Limited]
Improved security - Because resources are not shared with others, private clouds provide higher levels of control and security.
High scalability - Private clouds still afford the [Limited] scalability and efficiency of a public cloud.
Which of the following statements are true for IaaS cloud services?
(choose 2)
- The client is responsible for purchasing all Operating System (OS) host licensing.
- The client is responsible for all guest VM OS and application updates.
- The client has complete control over the hardware hosting the VM.
- Services can be scaled automatically to support system load.
- The client is responsible for all guest VM OS and application updates.
- Services can be scaled automatically to support system load.
Client is responsible for all guest VM OS and application updates - Client must perform all guest OS and application updates. Operating System (OS) licensing is included in the per-use cost of the service.
Services can be scaled automatically to support system load. - IaaS host services often feature the ability to scale automatically to combat increased system load and scaled back during periods of inactivity.
What Cloud model allows you to have complete control over the operating system?
Infrastructure as a Service
Infrastructure as a Service (IaaS) allows you to have complete control over the virtual machine operating system and any applications that you install onto the virtual machine.
You are beginning to extend your on-premises data center into Azure. You have created a new Azure subscription and resource group called RG-One. You deploy two virtual machines into RG-One with the intent of promoting these to Active Directory domain controllers. What kind of cloud service would this be considered?
Infrastructure-as-a-Service (IaaS)
Infrastructure-as-a-Service (IaaS) - Infrastructure as a service (IaaS) is the use of on-demand computing infrastructure which is provisioned and managed over the internet. Deploying virtual machines into an Azure subscription would be considered an IaaS service.
Which of the following statements about SaaS cloud services is correct?
- Applications must be accessed from a secure network (aka VPN)
- The client is responsible for purchasing all client software.
- The client has complete control over the application.
- The cloud service provider is responsible for all application upgrades.
-The cloud service provider is responsible for all application upgrades.
The cloud service provider performs all underlying hardware, OS, and middleware updates. With data stored in the cloud, users can access their information from any internet-connected computer or mobile device. And when app data is stored in the cloud, no data is lost if a user’s computer or device fails.
A cloud architecture consisting of both on-premise and public cloud networks is joined to allow applications to operate across the two. What is this known as?
- Private Cloud
- Public Cloud
- Stretched Cloud
- Hybrid Cloud
-Hybrid Cloud
A Hybrid Cloud is created when on-premise and public cloud environments are joined. This is a method many companies with existing on-premise infrastructure transition through in their journey to cloud, as it gives flexibility between the two environments and enables a phased migration approach.