Ref:

https://docs.aws.amazon.com/AmazonS3/latest/userguide/WebsiteHosting.html

Spot - Up to 90%

Reserved - Up to 75%

Ref:

https://aws.amazon.com/ec2/spot/pricing/

Encrypt data belongs to the customer responsibility for security 'IN' the cloud. So B is the correct answer!

Ref:

https://docs.aws.amazon.com/whitepapers/latest/aws-risk-and-compliance/shared-responsibility-model.html

A.

Key is customer-managed relational database.

DynamoDB is NOSQL type, not RDS.

Amazon Redshift is for data warehouse.

Amazon Redshift is a fully managed, petabyte-scale data warehouse service in the cloud.

You can start with just a few hundred gigabytes of data and scale to a petabyte or more.

Ref:

https://docs.aws.amazon.com/redshift/latest/mgmt/welcome.html

A. Route53

B. Elastic Load Balancing - Correct Answer

C. CloudWatch

D. AutoScaling

Answer: B

Elastic Load Balancing automatically distributes incoming application traffic across multiple targets, such as Amazon EC2 instances, containers, IP addresses, and Lambda functions.

There are three forms to interact with AWS Services.

AWS MGMT CONSOLE

Graphical interface to access AWS features

COMMAND LINE INTERFACE (CLI)

Lets you control AWS services from command line

SOFTWARE DEVELOPMENT KITS (SDKs)

Enable you to access AWS using a variety of popular programming languages

=> A,C

B and E. You use S3 for the content hosting and CloudFront as the content delivery network.

According to the Shared Responsibility Model, AWS is responsible for the underlying integrity and security of AWS physical resources, BUT NOT the integrity of the data and

configurations added by customers.

--> C is correct.

Ref:

https://docs.aws.amazon.com/whitepapers/latest/aws-risk-and-compliance/shared-responsibility-model.html

Difference AWS EBS and AWS S3 ?

1.S3 is a storage facility accessible any where (An object store)

2.EBS is a device you can mount onto EC2. It is A block storage (so you need to format it). This means you are able to choose which type of file system you want.

Unlike EBS or EFS, S3 is not limited to EC2.

Difference AWS S3 and AWS storage gateway ?

1.AWS S3 is an object storage. It acts as network disk. For people has no cloud experience, you can treat it as dropbox.

2.AWS Storage Gateway is an virtual interface (or in practice, it is a virtual pc running on your server) which allow you read/write data from/to aws S3 or other aws storage service transparently

You can assume S3 is dropbox itself, you can access it through web or api, and AWS Storage Gateway is the dropbox client on your pc, which simulate the dropbox as your local drive (actually a network drive in the real case).

Difference S3 and Glacier ?

Amazon S3 is a durable, secure, simple, and fast storage service, while Amazon S3 Glacier is used for archiving solutions

=> C is correct.

Other notes:

1.Lifecycle policies help manage and automate the life of your objects within S3, preventing you from leaving data unnecessarily available

2.S3 Object Versioning helps to keep multiple variants of an object in the same bucket. And can be used to preserve, retrieve, and restore every version of every object stored in the S3 bucket