AWS Certified Cloud Practitioner (CLF-C02) exam – Free Practice Test – 5

The Correct Answer:

B. Replication of the volume in the same Availability Zone

Amazon Elastic Block Store (Amazon EBS) provides persistent block storage volumes for use with Amazon EC2 instances in the AWS Cloud. Each Amazon EBS volume is automatically replicated within its Availability Zone to protect you from component failure, offering high availability and durability. Amazon EBS volumes offer the consistent and low-latency performance needed to run your workloads.

With Amazon EBS, you can scale your usage up or down within minutes — all while paying a low price for only what you provision.

Amazon EBS is designed for application workloads that benefit from fine tuning for performance, cost and capacity. Typical use cases include Big Data analytics engines (like Hadoop/HDFS ecosystem and Amazon EMR clusters), relational and NoSQL databases, stream and log processing applications like Kafka, and data warehousing applications.

Read more on this from the AWS Documentation here. https://aws.amazon.com/ebs/

The correct answer is

D. A VPC can span across all the Availability Zones in an AWS Region.

Other options are incorrect.

Read more in AWS FAQ : https://aws.amazon.com/vpc/faqs/#Amazon_VPC_and_EC2

The correct answer is

D. Use AWS CloudTrail to see if the security group was changed.

Reference : https://aws.amazon.com/premiumsupport/knowledge-center/cloudtrail-event-history-changed/

The correct answer is

C. Pay-as-you-go pricing.

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.

B. “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.

Read more on this here: https://aws.amazon.com/pricing/

The correct answer is

B. Loose coupling.
D. Remove single points of failure.

Loose coupling is when you break the systems in to smaller components that are loosely coupled together to deliver the service. This reduces interdependencies between systems components and possess less friction. Loos coupling is achieved in the cloud architecture using message queues(SQS), notification(SNS) and messaging services.

Removing single points of failure ensures fault tolerance and high availability. This is realised in the cloud architecture and features of the cloud design 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.