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Question 235 - CLF-C02 discussion

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A company is reviewing the design of an application that will be migrated from on premises to a single Amazon EC2 instance.

What should the company do to make the application highly available?

A.
Provision additional EC2 instances in other Availability Zones.
Answers
A.
Provision additional EC2 instances in other Availability Zones.
B.
Configure an Application Load Balancer (ALB). Assign the EC2 instance as the ALB's target.
Answers
B.
Configure an Application Load Balancer (ALB). Assign the EC2 instance as the ALB's target.
C.
Use an Amazon Machine Image (AMI) to create the EC2 instance.
Answers
C.
Use an Amazon Machine Image (AMI) to create the EC2 instance.
D.
Provision the application by using an EC2 Spot Instance.
Answers
D.
Provision the application by using an EC2 Spot Instance.
Suggested answer: A

Explanation:

Provisioning additional EC2 instances in other Availability Zones is a way to make the application highly available, as it reduces the impact of failures and increases fault tolerance. Configuring an Application Load Balancer and assigning the EC2 instance as the ALB's target is a way to distribute traffic among multiple instances, but it does not make the application highly available if there is only one instance. Using an Amazon Machine Image to create the EC2 instance is a way to launch a virtual server with a preconfigured operating system and software, but it does not make the application highly available by itself. Provisioning the application by using an EC2 Spot Instance is a way to use spare EC2 capacity at up to 90% off the On-Demand price, but it does not make the application highly available, as Spot Instances can be interrupted by EC2 with a two-minute notification.

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asked 16/09/2024
Alessandro Cristofori
39 questions
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