QUIZ module 3 introduction to AWS storage services CDN

False Feedback Correct b.: That’s right.. a S3 allows users to write related files of any size or format to its logical folder b S3 can be used as the underlying physical storage for a d

QUIZ

Module-3

Introduction to AWS Storage Services & CDN

1) EBS storage is packaged as a separate component in the AWS management console

a True

b False

Feedback

Correct b.: That’s right EBS is an additional block storage which you can attach to your EC2

instances It is not packaged as a separate service in the AWS management console

Incorrect a: No That’s not quite right EBS is an additional storage for your EC2 machines

But, it is not packaged as a separate component in the AWS management console

2) Which of the following statements about S3 is NOT true?

a) S3 allows users to write related files of any size or format to its logical folder

b) S3 can be used as the underlying physical storage for a database

c) S3 allows users to keep on expanding their storage, as their application grows d) After grouping related files in the S3 logical folder, users get a ‘bucket’ to access that data

Feedback

Correct if b) is chosen: That’s right S3 does not have the raw file system semantics that a DBMS has So, you cannot use it as the underlying physical storage for a database.

Correct if d) is chosen: That’s right S3 allows you to group related files into its logical folder

called a ‘bucket’ To access this data S3 sends you a URL back, not a ‘bucket’

Incorrect if a) is chosen: No That’s not quite right S3 allows you to write related files of any

size or format like audio, video, text or graphics to its logical folder

Incorrect if c) is chosen: No That’s not quite right With S3 no pre-provisioning is needed It

is a highly scalable service S3 allows you to keep on expanding your storage as your

application grows

3) Which of the following statements about EBS is true?

a) EBS cannot be used as the underlying storage for a database

b) EBS is a raw object storage service

c) EBS users have to pre-provision the amount of storage they need

Feedback

Correct if c) is chosen: That’s right EBS does not provide you any scalability So, you have to

pre-determine the amount of storage to be attached to your EC2 machines You should also

be careful while allocating the storage, to avoid scaling every time

Incorrect if a) is chosen: No That’s not quite right EBS has the raw file system semantics,

databases are used to So, you can use it as the underlying storage for a database

Incorrect if b) is chosen: No That’s not quite right EBS is a raw block storage service You can

attach it as an additional storage to your EC2 machines

4) When is Glacier the best storage of choice?

a) When cost benefit is our prime concern

b) When we need scalability for our applications

c) When we need a storage service with raw file system semantics

d) When data is written to a lot more, but read a lot less often

Feedback

Correct if d) is chosen: That’s right You need to select Glacier, when you have a lot of data to

be written to, but always read less You can use it for your archival and back-up scenarios

Incorrect: No That’s not quite right Glacier is the best storage to select, when you have a lot

of data to be written to, but always read less

5) Which of the following statements about Elastic File System is NOT true?

a) Elastic File System is cheaper compared to other services

b) Elastic File System offers users high scalability, similar to S3

c) Elastic File System has raw file system semantics like EBS

d) Multiple EC2 instances can concurrently read and write data to the same Elastic File System

Feedback

Correct if a) is chosen: That’s right Elastic File System combines the best of all the other

storage services So, it’s more expensive compared to other AWS storage services

Incorrect if b) is chosen: No That’s not quite right Elastic File System provides you high

scalability, just like S3

Incorrect if c) is chosen: No That’s not quite right With Elastic File System you get the same

raw file system semantics like EBS

Incorrect if d) is chosen: No That’s not quite right You can use multiple EC2 instances to

concurrently read and write data to the same Elastic File System

6) Which of the following statements about CloudFront is NOT true?

a) CloudFront serves content from the nearest data center

b) CloudFront’s performance can be monitored using CloudWatch

c) EBS can serve as the underlying backend for CloudFront

d) S3 bucket is configured in CloudFront, before distributing the data

Feedback

Correct if c) is chosen: That’s right S3 serves as the underlying backend for your CloudFront

services, not EBS

Incorrect if a) is chosen: No That’s not quite right CloudFront serves your content from the

nearest data center, at the shortest latency possible

Incorrect if b) is chosen: No That’s not quite right You can monitor the performance of your

CloudFront service CloudWatch does this for you

Incorrect if d) is chosen: No That’s not quite right You have to configure the S3 bucket in

CloudFront CloudFront then distributes this data worldwide