Exam AWS Certified Solutions Architect - Associate SAA-C02 topic 1 question 56 discussion

B & E to me...

CORRECT: "Create an Amazon EC2 Auto Scaling group and Application Load Balancer (ALB) spanning multiple AZs" is the correct answer. CORRECT: "Create new public and private subnets in the same VPC, each in a new AZ. Migrate the database to an Amazon RDS multi-AZ deployment" is the correct answer. INCORRECT: "Create new public and private subnets in the same AZ for high availability" is incorrect as this would not add high availability. INCORRECT: "Add the existing web application instances to an Auto Scaling group behind an Application Load Balancer (ALB)" is incorrect because the existing servers are in a single subnet. For HA we need to instances in multiple subnets. INCORRECT: "Create new public and private subnets in a new AZ. Create a database using Amazon EC2 in one AZ" is incorrect because we also need HA for the database layer. References:

B & E..

the question never mentioned RDS, or relational Database, it simply only mention database, so how is option E correct?

B,E Fact is that subnets are tied to an AZ. HA implies need to go cross AZ option A retains subnets in same AZ/also not clear on where EC2s go. option B fits. option C does not talk about AZs (Note its possible to add existing instances to an ASG: https://docs.aws.amazon.com/autoscaling/ec2/userguide/attach-instance-asg.html#:~:text=%20Attaching%20an%20instance%20%20%28console%29%20%201,pane%2C%20under%20AUTO%20SCALING%2C%20choose%20Auto...%20More%20) Option D still puts DB in one AZ/no info on how EC2s are placed Option E completes option B in terms of creation of the new subnets in a new AZ.And it also covers the Database HA(RDS Multi AZ).

it's saying highly available how it can be D It should be A & E only

DDDDDDDDDDDDDDDD is the answer

B & E for me

There's no guarantee we could migrate the database to RDS because we're not sure if the database is relational or not?

b and e

B and E for sure

B and E For high availability, the Load Balancer and Auto Scaling should span across multiple instances across multipleAZs. Using Auto Scaling & ELB by spanning Auto Scaling groups across multiple AZs within a region and then setting up ELB to distribute incoming traffic across those AZs helps take advantage of the safety and reliability of geographic redundancy RDS multi-AZ provides high availability by creating as standby instance in a different AZ

B and E is correct.

it's BE

Ans = B & E

B and E

why B? Autoscaling cannot happen outside the AZ within a given subnet. So until we create new subnets, i am not sure how we will be able to scale out EC2 in Multi AZ. "E" is correct for sure but B is something not correct. What am I missing?