Design High Performing Architectures

Question 1

List the 7 Amazon EC2 Auto Scaling Termination Policies

Answer 1

• Default
• AllocationStrategy
• OldestLaunchTemplate
• OldestLaunchConfiguration
• ClosetToNextInstanceHour
• NewestInstance
• OldestInstance

Question 2

Default

Answer 2

It terminates instances according to the default termination policy

• It is also useful, for example, when you want to move off launch configurations and start using launch templates.

Question 3

ClosestToNextInstanceHour

Answer 3

• It terminates the oldest instance in a group
• Terminate instances that are closest to the next billing hour

Question 4

AllocationStrategy

Answer 4

• it is useful while rebalancing the number of EC2 instances in an autoscaling policy to align to the allocation strategy for the terminating instance
• This policy is useful when your preferred instance types have changed

Question 5

OldestLaunchTemplate

Answer 5

Terminate instances that have the oldest launch template.

• its useful when you’re updating a group and phasing out the instances from a previous configuration

Question 6

NewestInstance

Answer 6

Terminate the newest instance in the group

Question 7

OldestInstance

Answer 7

Terminate the oldest instance in the group

Question 8

Advanced Query Accelerator (AQUA) for Amazon Redshift

Answer 8

• it helps customers boost the query performance by 10x.
• it resolves betwork bandwidth and memory processing (CPU) bottleneck, low cost, and is easy to deploy

Question 9

RedShift Spectrum

Answer 9

it is used for querying data directly in S3 files.

Question 10

Amazon S3 Transfer Acceleration

Answer 10

it is a bucket-level feature that enables fast, easy, and secure transfers of files over long distances between your client and an S3 bucket.

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Question 11

Amazon EventBridge

Answer 11

It is used to build applications that start processing after any changes to the objects stored in Amazon s3 buckets.