Exam2-Part5

Question 1

Amazon Simple Queue Service (SQS) and Amazon Simple Workflow Service (SWF)

Answer 1

the services that you can use for creating a decoupled architecture in AWS. Decoupled architecture is a type of computing architecture that enables computing components or layers to execute independently while still interfacing with each other.

Question 2

A company has a dynamic web app written in MEAN stack that is going to be launched in the next month. There is a probability that the traffic will be quite high in the first couple of weeks. In the event of a load failure, how can you set up DNS failover to a static website?

Answer 2

use Route 53 with the failover option to a static S3 website bucket or CloudFront distribution

Question 3

An organization needs to control the access for several S3 buckets. They plan to use a gateway endpoint to allow access to trusted buckets.

Which way a solutions architect could help you achieve this requirement?

Answer 3

• VPC Configuration:
• Private Subnet:
• VPC Endpoint for S3:
• Endpoint Policy:
• Bucket Policies:
• Security Groups and IAM Roles:
• Testing and Validation:

Question 4

A company wants to organize the way it tracks its spending on AWS resources. A report that summarizes the total billing accrued by each department must be generated at the end of the month.

Which solution will meet the requirements?

Answer 4

Tag resources with the department name and enable cost allocation tags.

Question 5

you can’t have a VPC with IPv6 CIDRs only

Answer 5

The default IP addressing system in VPC is IPv4. You can only change your VPC to dual-stack mode where your resources can communicate over IPv4, or IPv6, or both, but not exclusively with IPv6 only.

Question 6

aws data life-cycle manager

Answer 6

used to automate creation/deletion of EBS snapshots. It can be a useful way to manage snapshot lifecycles and minimize storage costs.

Question 7

Here is a list of important information about EBS Volumes:

Answer 7

• When you create an EBS volume in an Availability Zone, it is automatically replicated within that zone to prevent data loss due to a failure of any single hardware component.
• An EBS volume can only be attached to one EC2 instance at a time.
• After you create a volume, you can attach it to any EC2 instance in the same Availability Zone
• An EBS volume is off-instance storage that can persist independently from the life of an instance. You can specify not to terminate the EBS volume when you terminate the EC2 instance during instance creation.
• EBS volumes support live configuration changes while in production which means that you can modify the volume type, volume size, and IOPS capacity without service interruptions.
• Amazon EBS encryption uses 256-bit Advanced Encryption Standard algorithms (AES-256)
• EBS Volumes offer 99.999% SLA.

Question 8

In Auto Scaling, the following statements are correct regarding the cooldown period:

Answer 8

It ensures that the Auto Scaling group does not launch or terminate additional EC2 instances before the previous scaling activity takes effect.

Its default value is 300 seconds.

It is a configurable setting for your Auto Scaling group.