Domain 1: Cloud Concepts Flashcards
What are the 5 criteria of cloud computing?
- On-demand self service
- Network connectivity
- Resource pooling
- Elasticity
- Resource usage must be monitored and billed.
What is high availability?
A way to design your systems to have the ability to keep your systems up and running and providing service as often as possible.
What is fault tolerance?
The actual ability of a system to keep operating in the event of a failure.
What are the two ways to scale
Vertically and horizontally.
What type of scaling is adding more instances of the same size?
Horizontal.
What type of scaling is adding a larger instance size?
Vertical.
What are the 6 pillars of the AWS Well-Architected Framework?
- Operational Excellence
- Security
- Reliability
- Performance Efficiency
- Cost Optimization
- Sustainability
What are the 7 migration strategies?
- Retire - apps that you want to decommission or retire.
- Retain - apps you want to keep in the source environment or apps that aren’t ready to be migrated.
- Rehost (lift and shift) - apps to be migrated w/o making any changes to the app.
- Relocate - a large number of servers that are made up of one or more apps.
- Repurchase (drop and shop) - apps with a different version or product and provides more value than the existing infra.
- Replatform (lift, tinker, and shift) - apps that need some level of optimization to operate efficiently or to take advantage of AWS capabilities.
- Refactor (rearchitect) - apps you want to migrate to AWS and take full advantage of the cloud-native features to improve agility, performance, and scalability.
What are the 4 parts of total cost of ownership (TCO) in AWS for this exam?
- Operational expenses - day-to-day operating costs like utilities, printer toner, coffee, and snacks.
- Capital Expenses (CapEx) - the costs associated with creating the long-term benefits like purchasing a building, servers, printers, storage, and backups. CapEx items are generally purchased once, and are expected to be used by your organization for years.
- Labor costs - associated with staffing an on-premises environment or data center like network operation center technicians, who are responsible for installation, configuration, troubleshooting, and management of your servers and infrastructure.
- Software licensing - the cost and the impact of migrating software licensing costs to AWS.
When you migrate from an on-premises environment and traditional servers to AWS, are you trading capital expenses for variable expenses?
Yes.
A company that operates in the cloud wants to test workloads and team responses to simulated events to identify potential issues that need to be addressed.
Which design principle of the AWS Well-Architected Framework does this exercise represent?
Anticipate failure.
A company is starting its migration to the AWS Cloud. They want to use AWS experience and best practices to help ensure its success in moving to the cloud. They want a combination of business-oriented and technical points of view.
Which AWS service or guidance will meet these requirements?
AWS Cloud Adoption Framework (CAF)
What are the 6 perspectives identified in the AWS CAF that support successful transitions to the AWS Cloud?
- Business - helps ensure that your cloud investments accelerate your digital transformation ambitions and business outcomes.
- People - serves as a bridge between tech and business, accelerating the cloud journey to help orgs more rapidly evolve to a culture of continuous growth, learning, and where change becomes business-as-normal.
- Governance - helps you orchestrate your cloud initiatives while maximizing organizational benefits and minimizing transformation-related risks.
- Platform - helps you build an enterprise-grade scalable, hybrid cloud platform, modernize existing workloads, and implement new cloud-native solutions.
- Security - helps you to achieve the confidentiality, integrity, and availability of your data and cloud workloads.
- Operations - helps ensure that your cloud services are delivered at a level that meets the needs of your business.
Company has an app that has dependencies between its underlying components. When one component fails, the entire app fails.
Which AWS Cloud design principle should be applied to address the current weakness of the app?
Decouple components by isolating them and ensuring that individual components function when other components fail.
A company wants to migrate its app to AWS. The company wants to replace upfront expenses with variable payment that’s based on usage.
What should they do to meet these requirements?
Use pay-as-go pricing.
