Practice Test

High availability in AWS means that your applications and services will never face any downtime. Is this statement true or false?

  • Answer: False.

Explanation: High availability in AWS just means that your applications and services are designed to continue operating with minimum periods of interruption or unavailability, not zero downtime.

High Availability, Agility and Elasticity are the key benefits of cloud computing.

  • Answer: True.

Explanation: Yes, these are the key benefits as cloud computing provides scalable resources, faster innovation, and flexible capacity planning.

Agility in cloud computing refers to:

  • A. The ability to provision and de-provision resources quickly.
  • B. The cloud service‚Äôs capability to prevent disruptions and data losses.
  • C. The ability of the cloud service to expand and contract resources as needed.
  • D. The ability of the cloud to host applications.
  • Answer: A. The ability to provision and de-provision resources quickly.

Explanation: Agility in cloud computing means the ability to quickly get and deploy services. It enables you to minimize the time required to deliver IT resources.

Only AWS provides Elasticity, Agility, and High Availability. Other cloud providers don’t offer these features. Is this statement true or false?

  • Answer: False.
  • Explanation: Elasticity, Agility, and High Availability are not unique to AWS alone. Other cloud providers like Google Cloud, Azure also provide these features.

High Availability with AWS can be achieved only through Multi-AZ deployments. True or False?

  • Answer: False.

Explanation: Although Multi-AZ is a common strategy for achieving high availability in AWS, there are other options available such as load balancing, autoscaling, and replicating instances across multiple regions.

Elasticity is the ability to grow or shrink infrastructure resources dynamically as workload changes. True or False?

  • Answer: True.

Explanation: Elasticity refers to the ability to quickly increase or decrease resources to meet demand, and then release them when they’re no longer needed.

In AWS, Elastic Load Balancer helps in maintaining High Availability. True or False?

  • Answer: True.

Explanation: Elastic Load Balancer in AWS distributes incoming application traffic across multiple targets, such as EC2 instances which helps in achieving high availability.

Owning and Maintaining hardware on-premise is more agile than using cloud resources. True or False?

  • Answer: False.

Explanation: Since owning hardware on-premise involves more time and effort in managing resources, it’s considered less agile. Whereas, the cloud provides agility to quickly scale up or down your resources according to the business needs.

Agility in AWS refers to:

  • A. Quick data recovery
  • B. Quick decision making
  • C. Quick resource scalability
  • D. All of the above
  • Answer: C. Quick resource scalability

Explanation: Agility in AWS refers to the ability to provision and de-provision resources quickly and efficiently, in response to the changes in business requirements.

AWS Autoscaling is one of the services helping in achieving Elasticity. True or False?

  • Answer: True.

Explanation: AWS Autoscaling service helps in maintaining application availability and allows us to dynamically scale up or down your applications in accordance with defined conditions.

Interview Questions

What is the benefit of high availability in AWS?

High availability in AWS ensures that applications and services are available for use even if some components fail. It mitigates the impact of downtime and ensures continuous operation for users.

Define the term ‘elasticity’ in the context of AWS?

Elasticity in AWS refers to the ability to quickly add or remove resources to applications to meet demand and manage costs.

What is agility in the context of AWS?

Agility in AWS means the ability to rapidly innovate, experiment, and iterate. It involves fast delivery of services, faster time to market products, and overall operational efficiency.

How does AWS ensure high availability?

AWS ensures high availability by providing a set of services designed for resilience, such as Amazon S3, Amazon RDS. It also allows you to set up multi-region, multi-AZ architectures to reduce the impact of a failure.

How does Elastic Load Balancing support high availability?

Elastic Load Balancing (ELB) supports high availability by automatically distributing incoming application traffic across multiple targets, such as Amazon EC2 instances, containers, and IP addresses, in multiple Availability Zones. This leads to increased fault tolerance in your applications.

How does Amazon RDS support elasticity?

Amazon Relational Database Service (RDS) supports elasticity by allowing you to easily adjust the capacity of your database deployment, up or down, in just a few minutes.

What is the Amazon S3’s role in ensuring high availability?

Amazon S3 storage offers high availability by storing copies of objects over multiple systems to achieve 99.999999999% durability. S3 also supports versioning which allows preserving, retrieving, and restoring every version of every object in a bucket.

What is the role of Amazon EC2 in achieving elasticity?

Amazon EC2 contributes to achieving elasticity by allowing you to quickly scale capacity, both up and down, as your computing requirements change. EC2 provides a variety of instance types optimized to fit different use cases.

How does AWS contribute to business agility?

AWS contributes to business agility by enabling organizations to innovate and experiment at a faster pace. They can quickly launch new products, analyze massive data sets and adapt to changing conditions without upfront cost and complexity of managing IT infrastructure.

How does Auto Scaling promote elasticity and high availability?

AWS Auto Scaling helps promote both elasticity and high availability by automatically adjusting capacity to maintain steady, predictable performance at the lowest possible cost. It helps ensure that the correct number of Amazon EC2 instances are always running based on defined conditions.

In what ways does AWS provide high availability?

AWS provides high availability through multiple Availability Zones and regions, Elastic Load Balancing, and services such as Amazon RDS which automatically create and manage a “standby” replica of your production database.

What tools does AWS provide for ensuring agility?

AWS provides various tools for ensuring agility including AWS Lambda for serverless compute, AWS Elastic Beanstalk for platform as service, AWS CloudFormation for infrastructure as code, and AWS CodeStar for Continuous Integration and Continuous Deployment (CI/CD).

How does elasticity help in cost optimization in AWS?

Elasticity in AWS helps cost optimization by allowing businesses to only pay for what they use. This means you can quickly scale up resources when demand is high and scale down when demand is low, optimizing costs effectively.

What services in AWS provide high availability?

Several services in AWS provide high availability, including Amazon S3, Amazon EC2, Amazon RDS, Elastic Load Balancing, Amazon DynamoDB, and Amazon ECS.

How does agility in AWS support business growth?

Agility in AWS supports business growth by allowing organizations to innovate quickly, respond to marketplace changes with flexibility, and scale their resources according to their business requirements. By reducing the time taken to market innovations and changes, businesses can grow more effectively.

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