Miscellaneous

Question 1

What is Amazon Athena?

Answer 1

Amazon Athena is a serverless querying service which allows data analysts or other professionals to perform interactive queries on data inside of Amazon S3.

Question 2

What is ElastiCache?

Answer 2

ElastiCache is a managed in-memory cache which provides a managed implementation of the redis or memcached engines.

Question 3

When is ElastiCache useful?

Answer 3

It’s useful for read-heavy workloads, scaling reads in a cost effective way, and allowing for externally hosted user session state.

It’s important to note that in order to integrate ElastiCache into an existing system, changes to the code of the application will be required.

Question 4

What is KMS?

Answer 4

AWS Key Management Service (AWS KMS) enables us to perform encryption/decryption operations through the use of cryptographic keys.

It also allows us create, store, and manage keys.

Question 5

True/False. The permissions to encrypt, decrypt, and generate keys are all different.

Answer 5

True.

Question 6

How do KMS keys operate?

Answer 6

KMS keys can only operate cryptographically on data which is a maximum of 4KB in size.

Question 7

True/False. Data Encryption Keys (DEKs) cannot work with data larger than 4KB in size.

Answer 7

False. Data Encryption Keys (DEKs) CAN work with data larger than 4KB in size.

Question 8

True/False. KMS keys are isolated to a region and they never leave the region nor KMS itself. You can extract a KMS key.

Answer 8

False. KMS keys are isolated to a region and they never leave the region nor KMS itself. You CAN extract a KMS key.

Question 9

True/False. You can have special multi-region keys within KMS.

Answer 9

True.

Question 10

True/False. Each KMS key has a key policy, which is a type of IAM policy.

Answer 10

False. Each KMS key has a key policy, which is a type of resource policy.

Question 11

What is Redshift?

Answer 11

Redshift is a column based, petabyte scale, data warehousing product within AWS.

Question 12

What is Redshift designed for?

Answer 12

It’s designed for online analytical processing (OLAP) products both within AWS and on-premises to add data to for long term processing, aggregation, and trending.

Question 13

What are our query options for Redshift?

Answer 13

We can direct query S3 using Redshift Spectrum. We can direct query other databases using federated query.

Question 14

True/False. Redshift is a serverless product.

Answer 14

False. Redshift is a server based product, NOT a serverless one.