Storage

Question 1

Which S3 storage class is designed to optimize costs by automatically moving data to the most cost-effective access tier, without performance impact or operational overhead.

Answer 1

Intelligient Tiering

Question 2

Can an EBS volumesused to store high volume data?

Answer 2

No

EBS cannot be used in place of a database

Question 3

Which of the following S3 storage classes supports encryption by default for both data at rest as well as in-transit?

Answer 3

Glacier

Question 4

When fault tolerance is more important than performance, which RAID config do you use?

Answer 4

RAID 1

RAID 0 is for optimal performance without fault tolerance

Question 5

Which one of these volumes types is the only one that support multi-az share access

Provisioned IOPS SSD EBS volumes
General-purpose SSD-based EBS volumes
Throughput Optimized HDD EBS volumes
Cold HDD EBS volumes

Answer 5

provisioned iops

Question 6

Why would a RAID 5 solution not work in this scenario?

A company is developing a document management application on AWS. The application runs on EC2 instances in multiple Availability Zones. The company requires the document store to be highly available and the documents need to be returned immediately when requested. The engineering team has configured the application to use EBS to store the documents but the team is willing to consider other options to meet the availability requirement.

Answer 6

RAID 5 and RAID 6 are not recommended for Amazon EBS because the parity write operations of these RAID modes consume some of the IOPS available to your volumes. Depending on the configuration of your RAID array, these RAID modes provide 20-30% fewer usable IOPS than a RAID 0 configuration.

Question 7

A photo-sharing company is storing user profile pictures in an S3 bucket and an image analysis application is deployed on four EC2 instances. A solutions architect would like to trigger an image analysis procedure only on one of the four EC2 instances for each photo uploaded.

What do you recommend?

Answer 7

by using S3 event notification and sending to SQS queue, we know only one EC2 instance among the four will pick up a message and process it.

Question 8

A team has around 200 users, each of these having an IAM user account in AWS. Currently, they all have read access to an Amazon S3 bucket. The team wants 50 among them to have write and read access to the buckets.

How can you provide these users access in the least possible time, with minimal changes?

Answer 8

create a group, attach a policy, add the users