Module 2: Introducing Cloud Architecting

Question 1

What is the best definition of cloud architecture?

• Combining frontend and backend software end components to create highly available and scalable web services that meet the needs of an organization.
• Applying cloud characteristics to a solution that uses cloud services and features to meet technical an business requirements
• Designing applications in cloud-based, shared IT infrastructure by using virtual machines and fault-tolerant data stores in the cloud
• Relocating traditional on-premises data centers to internet-accessible data centers that a vendor manages

Answer 1

Applying cloud characteristics to a solution that uses cloud services and features to meet technical an business requirements

Question 2

The AWS Well-Architected Framework has five pillars. Two of the pillars are security and operational excellence. What are the other pillars of the Well-Architected Framework? (Select THREE)

• Reliability
• Governance
• Privacy
• Performance Efficiency
• Risk Management
• Cost Optimization

Answer 2

-Reliability
- Performance Efficiency
- Cost Optimization

Question 3

Which actions are consistent with the operational excellence pillar of the AWS Well-Architected Framework?

• Review and improve processes and procedures on a continuous cycle.
• Evaluate organizational structures and roles to identify skill gaps
• Apply software engineering principles and methodology to infrastructure as code.
• Ensure operations personnel document changes to the infrastructure.
• Plan and manage full lifecycle of hardware assets.

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Answer 3

lookup answer

Question 4

An application requires a frontend web tier of multiple servers that communicate with a backend application tier of multiple servers. Which design most closely follows Amazon Web Services (AWS) best practices?

-Assign a dedicated application server and a dedicated connection to each web server.

-Create multiple instances that each combine a web frontend and application backend in the same instance.

-Design the web tier to communicate with the application tier through the Elastic Load Balancing service.

-Create a full mesh network between the web and application tiers, so that each web server can communicate directly with every application server.

Answer 4

-Design the web tier to communicate with the application tier through the Elastic Load Balancing service.

(Although ELB appears to be a single point of failure in diagrams, the service is highly available and does not preent a single point of failure. In this architecture, ELB would decouple the two tiers.)

Question 5

A solutions architect is developing a process for handling server failures. Which process most closely follows Amazon Web Services (AWS) best practices?

• Operations detects a system failure. They notify the systems admin, who provisions a new server by using the AWS Management Console.
• Amazon CloudWatch detects a system failure. It notifies the systems admin, who provisions a new server by using the AWS Management Console.
• Amazon Cloudwatch detects a system failure. It triggers automation to provision a new server.

Answer 5

• Amazon Cloudwatch detects a system failure. It triggers automation to provision and new server.

Question 6

A company wants to change some functionality of their website. They are unsure of what will happen if they make the change. Which approach most closely follows AWS best practices?

• Change the production site while it is online. Use backups to undo the change.
• Change the production site during offline maintenance hours. Use backups to undo the change.
• Provision a new server and make changes to it. Use DNS to gradually migrate users to the new server. Shut down the original server after all users migrate.
• Test the change on an existing development server. Change the production site during offline maintenance hours. Use backups to undo the change.

Answer 6

• Provision a new server and make changes to it. Use DNS to gradually migrate users to the new server. Shut down the original server after all users migrate.

(This approach describes rolling deployment. Both servers are online at the same time. Undo is faster than the other options presented. AWS enables rolling deployments through dynamic provisioning of disposable virtual server instances.)

Question 7

A company stores read-only data in Amazon Simple Storage Service (Amazon S3). Most users are in the same country as the company headquarters. Some users are located around the world. Which design decision most closely follows Amazon Web Services (AWS) best practices?

• Use a bucket in the AWS Region closest to the company headquarters
• Use a bucket in the AWS Region that has the lowest average latency for all users.
• Replicate objects across buckets in AWS Regions around the world. Users access the bucket in the AWS Region closest to them.
• Use a bucket in the AWS Region closest to the company headquarters. All users access the data through Amazon CloudFront.

Answer 7

• Use a bucket in the AWS Region closest to the company headquarters. All users access the data through Amazon CloudFront.

Question 8

A consultant must access a large object in an S3 bucket. They need a day to access the file. Which method for granting access most closely follows AWS best practices?

• Create a pre-signed URL to the object that expires in 24 hours, and give it to the consultant.
• Enable public access on the S3 bucket. Enable public access on the new bucket. From the new bucket, get the object URL, and give it to the consultant.
• Copy the object to a new S3 bucket. Enable public access on the new bucket. From the new bucket, get the object URL, and give it to the consultant.
• Create a user account for the consultant. Grant the user account permissions to access the S3 bucket through the AWS Management Console.

Answer 8

-Create a pre-signed URL to the object that expires in 24 hours, and give it to the consultant.

Question 9

What are the main considerations that influence which AWS Regions to use? (Select TWO)

• Security and Access Control.
• Latency reduction for end users.
• Protection against localized natural disasters.
• Application resiliency during system failures.
• Compliance with laws and regulations.

Answer 9

• Latency reduction for end users.
• Compliance with laws.

Question 10

What are the main considerations that influence which AWS Availability Zones (AZs) to use? (Select TWO)