AWS Cloud Practitioner Free Practice Questions

The correct answer is D. “RDS simplifies relational database administration tasks”.

Explanation:

Amazon RDS is a managed relational database service on which you can run several types of database software. The service is managed so this reduces the database administration tasks an administrator would normally undertake. The managed service includes hardware provisioning, database setup, patching and backups.

A. “RDS provides 99.99999999999% reliability and durability” is incorrect. This is not true of Amazon RDS.

B. “RDS databases automatically scale based on load” is incorrect. This is not true, storage auto scaling is possible but for compute it scales by changing instance type (manual).

C. “RDS enables users to dynamically adjust CPU and RAM resources” is incorrect. You cannot adjust CPU and RAM dynamically, you must change the instance type and reboot the database instance.

References:

https://aws.amazon.com/rds/

https://digitalcloud.training/aws-database-services/

The correct answer is B. “Pay-as-you-go pricing”.

Explanation:

Pay-as-you-go pricing helps companies move away from fixed costs to variable costs in a model in which they only pay for what they actually use. There are no fixed term contracts with AWS so that requirement is also met.

A. “Economies of scale” is incorrect. You do get good pricing because of the economies of scale leveraged by AWS. However, the value proposition for companies wishing to avoid fixed costs is pay-as-you-go pricing. This flexibility can be more important in some cases than the actual cost per unit.

C. “Volume pricing discounts” is incorrect. This is not the value proposition for this company as they are seeking to avoid long-term contracts and fixed costs, not to achieve a discount.

D. “Automated cost optimization” is incorrect. This is a not a feature that relates to the value proposition for this customer.

References:

https://aws.amazon.com/pricing/

https://digitalcloud.training/certification-training/aws-certified-cloud-practitioner/aws-billing-and-pricing/

The correct answer is A. “Dedicated Hosts”.

Explanation:

An Amazon EC2 Dedicated Host is a physical server with EC2 instance capacity fully dedicated to your use. Dedicated Hosts allow you to use your existing per-socket, per-core, or per-VM software licenses, including Windows Server, Microsoft SQL Server, SUSE, and Linux Enterprise Server.

Note that dedicated hosts can be considered “hosting model” as it determines that actual underlying infrastructure that is used for running your workload. All of the other answers are simply pricing plans for shared hosting models.

B. “Reserved Instances” is incorrect as this pricing model does not support physical isolation.

C. “On-Demand Instances” is incorrect as this pricing model does not support physical isolation.

D. “Spot Instances” is incorrect as this hosting pricing does not support physical isolation.

References:

https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/dedicated-hosts-overview.html

https://digitalcloud.training/certification-training/aws-certified-cloud-practitioner/aws-compute/

The correct answer is B. “Loose coupling” and D. “Remove single points of failure”.

Explanation:

Loose coupling is when you break systems down into smaller components that are loosely coupled together. This reduces interdependencies between systems components. This is achieved in the cloud using messages buses, notification and messaging services.

Removing single points of failure ensures fault tolerance and high availability. This is easily achieved in the cloud as the architecture and features of the cloud support the implementation of highly available and fault tolerant systems.

A. “Minimize platform design” is incorrect. This is not an operational advantage for workloads in the cloud.

C. “Customized hardware” is incorrect. You cannot customize hardware in the cloud.

E. “Minimum viable product” is incorrect. This is not an operational advantage for workloads in the cloud.

References:

https://d1.awsstatic.com/whitepapers/AWS_Cloud_Best_Practices.pdf

https://digitalcloud.training/certification-training/aws-certified-cloud-practitioner/architecting-for-the-cloud/

The correct answer is A. “Launch the instances across multiple Availability Zones in a single AWS Region.”

Explanation:

To make the deployment highly available the user should launch the instances across multiple Availability Zones in a single AWS Region. Elastic Load Balancers can only serve targets in a single Region so it is not possible to deploy across Regions.

B. “Launch the instances as EC2 Spot Instances in the same AWS Region and the same Availability Zone” is incorrect. The pricing model is not relevant to high availability and deploying in a single AZ does not result in a highly available deployment.

C. “Launch the instances in multiple AWS Regions, and use Elastic IP addresses” is incorrect. You cannot use an ELB with instances in multiple Regions and using an EIP does not help.

D. “Launch the instances as EC2 Reserved Instances in the same AWS Region, but in different Availability Zones” is incorrect. Using reserved instances may not be appropriate as we do not know whether this is going to be a long-term workload or not.

References:

https://aws.amazon.com/about-aws/global-infrastructure/regions_az/

https://digitalcloud.training/certification-training/aws-certified-cloud-practitioner/aws-global-infrastructure/