Describe The Benefits Of Using Cloud Services

Question 1

What is high availability?

Answer 1

• Ensures max availability regardless of disruptions or events that may occur
• Azure is a highly available cloud environment with uptime guarantees depending on the service
• These guarantees of part of the service-level agreements (SLAs)

Question 2

what is an SLA?

Answer 2

• Service Level Agreement
• formal agreement between a service provider and customer a stated level of service
• Azure SLAs are related to the service or applications availability (aka “up time”)
• 100% uptime is hard because it allows no time for taking service down for maintenance
• 99%, 99.9% and 99.5% are most common
• A 99% service can be down for 7.2 hours a month
• 99.9% service can only be down 43.2 mins a month
  -each azure service has own SLA

Question 3

What is scalability?

Answer 3

• refers to the ability to adjust resources to meet demand
• you can add more resources to meet increased demand
• you don’t overpay for services, you pay only for what you use, if demand drops you can reduce resources

Question 4

What is vertical scaling?

Answer 4

• focused on increasing or decreasing the capabilities of resources
• you can scale up by adding more CPus or RAM to a VM and vise versa for scale down

Question 5

what is horizontal scaling?

Answer 5

• adding or subtracting the number of resources
• if you suddenly experienced a steep jump in demand your deployed resources could be scaled out automatically or manually
• vise versa for scaled in

Question 6

What is reliability?

Answer 6

• ability of a system to recover from failures and continue to function
• with a decentralised design the cloud enables you to have resources deployed in regions around the world
• if one region has a failure, the other regions are still up and running

Question 7

What is performance predictability?

Answer 7

• predicts the resources needed to deliver a positive experience for your customers
• autoscaling, load balancing and high availability

Question 8

what is cost predictability?

Answer 8

• predicts forecosting the cost of cloud spent
• you can track resources in real-time, monitor them to ensure you are using them in efficient manner and apply analytics to find trends that help plan deployments
• can use tools like pricing calculator

Question 9

Benefits of security and governance in the cloud?

Answer 9

• set templates to ensure that all resources meet corporate standards and government regulatory requirements
• can update all resources to new standards and they change
• cloud-based auditing helps flag resources that are out of compliance and provide mitigation strategies
• patches and updates may be automatically applied
  -Different models (IaaS, PaaS etc) allow for matching solutions to your needs
• cloud providers well suited to handle attacks like DDoS making network robust and secure

Question 10

What is management OF the cloud?

Answer 10

• RE managing your cloud resources
• automatically scale resource deployment based on need
• deploy resources based on templates, removing need for manual config
• monitor health of resources and auto replace failing resources
• receive auto alerts based on configured metrics so you’re aware of performance in real time

Question 11

What is management IN the cloud?

Answer 11

• RE how youre able to manage your cloud environment and resources. You can manage these
• through a web portal
• using a CLI
• using APIs
• using PowerShell