Revision Part 1: Azure Cloud Concepts

A company is planning to deploy its suite of enterprise applications to Microsoft Azure, where each application has several dependencies and subcomponents. The company must also control and manage the patching activities of the underlying operating system of the servers.

What type of cloud deployment solution should you recommend?

• 1. Infrastructure as a Service (laaS)

• 1. Platform as a Service (PaaS)

• 1. Software as a Service (SaaS)

• 1. Functions as a service (FaaS)

Answer explanation

Infrastructure as a service (IaaS) is an instant computing infrastructure, provisioned and managed over the internet. It’s one of the types of cloud services, along with software as a service (SaaS), platform as a service (PaaS), and serverless.

IaaS quickly scales up and down with demand, letting you pay only for what you use. It helps you avoid the expense and complexity of buying and managing your own physical servers and other data center infrastructure. Each resource is offered as a separate service component, and you only need to rent a particular one for as long as you need it.

Note: This item is part of a series of questions with the exact same scenario but with a different proposed answer. Each one in the series has a unique solution that may, or may not, comply with the requirements specified in the scenario.
A company is migrating all its applications and data to Microsoft Azure. There is a strict requirement that the Azure environment must only be comprised of platform-as-a-service (PaaS) solutions to minimize the amount of administrative effort in managing the underlying resources.

Solution: Deploy the applications using the Azure App Service and migrate the data to Azure SQL databases.

Does this solution comply with the requirement?

• 1. Yes

• 1. No

Answer explanation

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. You purchase the resources you need from a cloud service provider on a pay-as-you-go basis and access them over a secure Internet connection.

Like IaaS, PaaS includes infrastructure – servers, storage, and networking – but also middleware, development tools, business intelligence (BI) services, database management systems, and more. PaaS is designed to support the complete web application life cycle: building, testing, deploying, managing, and updating.

Azure App Service and Azure Virtual Machines are services that you can use in Azure. For each service, you have to determine its correct type of cloud service model.

Remarks: Select the correct answer from the drop-down list of options. Each correct selection is worth one point.

• Azure Virtual Machines: Platform as a service (PaaS)
  
  Azure App Service: Platform as a service (PaaS)

• Azure Virtual Machines: Software as a service (SaaS)
  
  Azure App Service: Software as a service (SaaS)

• Azure Virtual Machines: Infrastructure as a service (IaaS)
  
  Azure App Service: Platform as a service (PaaS)

• Azure Virtual Machines: Infrastructure as a service (IaaS)
  
  Azure App Service: Infrastructure as a service (IaaS)

• Azure Virtual Machines: Platform as a service (PaaS)
  
  Azure App Service: Infrastructure as a service (IaaS)

Answer explanation

Azure Virtual Machines: Infrastructure as a service (IaaS)

Azure App Service: Platform as a service (PaaS)

Which of the following are considered vertical scaling in a cloud environment?

• 1. Increase the number of virtual machines

• 1. Provision additional containers

• 1. Increase the CPU and RAM of a virtual machine

• 1. Provision an additional Azure dedicated host

Answer explanation

Scaling up and down, or vertical scaling keeps the number of resources constant but gives those resources more capacity in terms of memory, CPU speed, disk space and network. Vertical scaling is limited by the availability of larger hardware, which eventually reaches an upper limit. Hardware size availability varies in Azure by region. Vertical scaling may also require a restart of the virtual machine during the scaling process.

Note: The question is included in a number of questions that depicts the identical set-up. However, every question has a distinctive result. Establish if the solution satisfies the requirements.

You are tasked with deploying Azure virtual machines for your company.
You need to make use of the appropriate cloud deployment solution.
Solution: You should make use of Software as a Service (SaaS).
Does the solution meet the goal?

• Yes

• No

Note: The question is included in a number of questions that depicts the identical set-up. However, every question has a distinctive result. Establish if the solution satisfies the requirements.
You are tasked with deploying Azure virtual machines for your company. You need to make use of the appropriate cloud deployment solution.
Solution: You should make use of Platform as a Service (PaaS). Does the solution meet the goal?

• Yes

• No

Your company has an on-premises network with numerous servers, which they intend to migrate to Azure. You have been tasked with devising a plan that allows for the availability of a few of the servers, in the event that one of the Azure data centers becomes unavailable for a lengthy interval.
Solution: You should include scalability in your plan.
Does the solution meet the goal?

• Yes

• No

Answer explanation

Scalability is the ability to handle increased load. Question was looking for HA/ fault tolerance

Your company's on-premises network includes a large number of servers. They would like to make extra resources available to their users, while keeping capital and operational overheads to a minimum. You are required to make recommendations that should be included in the overall solution.
Solution: You should indorse the use of an added data center as part of the solution.
Does the solution meet the goal?

• Yes

• No

Answer explanation

Adding a datacenter will increase the cost

Your company's on-premises network includes a large number of servers. They would like to make extra resources available to their users, while keeping capital and operational overheads to a minimum. You are required to make recommendations that should be included in the overall solution.
Solution: You should indorse the use of a hybrid cloud as part of the solution.
Does the solution meet the goal?

• Yes

• No

Answer explanation

because the company already has physical servers they use. If they need more resources then they can get that via private cloud (which is less costly than adding new physical servers, or migrating everything to the cloud) Hence why hybrid would be the best solution. This is the only way they incur the least amount of expenses while meeting their needs

Your company is planning to migrate all their virtual machines to an Azure pay-as-you-go subscription. The virtual machines are currently hosted on the Hyper-V hosts in a data center. You are required make sure that the intended Azure solution uses the correct expenditure model.
Solution: You should recommend the use of the elastic expenditure model.
Does the solution meet the goal?

• Yes

• No

Answer explanation

Elasticity is not an expenditure model rather is one of the characteristics of cloud computing.
The basic advantage of cloud computing is shifting your high Capital Expenditure (CAPEX) requirements to optimal Pay -As-You-Go model which is Operational Expenditure (OPEX)