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 Q121. What is the difference between Programmatic access and console access ?Amazon Web Services (AWS)
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 Q122. Does IAM allow Biometric authentication ?Amazon Web Services (AWS)
Ans. No

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 Q123. Does IAM allow multifactor authentication ?Amazon Web Services (AWS)
Ans. Yes

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 Q124. What does the following Policy mean

{
"Version": "2012-10-17",
"Statement": [
{
"Effect": "Allow",
"Action": [
"s3:PutObject",
"s3:GetObject",
"s3:DeleteObject"
],
"Resource": [
"arn:aws:s3:::dev-bucket/*",
"arn:aws:s3:::qa-bucket/*"
]
}
]
}
Amazon Web Services (AWS)
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 Q125. Which AWS service can be used for creating Billing Alarms ?Amazon Web Services (AWS)
Ans. AWS CloudWatch

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 Q126. What does the Policy classification "Job Function" mean ?Amazon Web Services (AWS)
Ans. Job function provides a mechanism to bundle together all Policies that might be required to perform a particular job like Database Administrator , Billing Administrator etc and hence facilitates granting higher level permissions.

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 Q127. Which is more granular level policy types - Job function or AWS Managed ?Amazon Web Services (AWS)
Ans. AWS Managed. Job Function is the group of many AWS Managed Policies.

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 Q128. Do we need to specify IAM policies in all different regions ?Amazon Web Services (AWS)
Ans. No, They are all global.

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 Q129. Difference between S3 bucket and Folder ?Amazon Web Services (AWS)
Ans. Bucket is the highest level folder whose name should be unique globally.

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 Q130. What is the maximum size of a file in S3 ?Amazon Web Services (AWS)
Ans. 5 TB

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 Q131. Can we host a website in S3 ?Amazon Web Services (AWS)
Ans. Yes a static website can be hosted in S3.

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 Q132. What are the different ways to secure objects in S3 ?Amazon Web Services (AWS)
Ans. Encryption - In Transit , Client Side , Server Side
Restrictive Access - ACL , Bucket Policy

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 Q133. What status code is returned upon successful upload in S3 ?Amazon Web Services (AWS)
Ans. 200

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 Q134. What is the default visibility of buckets and objects when they are uploaded in S3 ?Amazon Web Services (AWS)
Ans. private

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 Q135. Can we make objects public in a bucket which is not public ?Amazon Web Services (AWS)
Ans. No

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 Q136. What is the difference between client side and server side encryption wrt to S3 objects ?Amazon Web Services (AWS)
Ans. Client side encryption is done by the users on their machines whereas server side encryption is done by AWS when objects are uploaded in S3.

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 Q137. If we have enabled versioning for S3 bucket, Do we need to make all new versions public whenever new versions are uploaded ?Amazon Web Services (AWS)
Ans. Yes, all new versions are private by default even if the original file has been made public.

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 Q138. What is a delete marker wrt to S3 objects ?Amazon Web Services (AWS)
Ans. If the objects / bucket is versioned in S3, Any delete operation on S3 object doesn't physically deletes the object but rather creates a delete marker version. We need to delete the delete marker to physically delete it.

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 Q139. Can we do Cross Region replication in S3 without versioning ?Amazon Web Services (AWS)
Ans. No , Both the source and destination should have versioning enabled.

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 Q140. Does deletion of an object gets replicated too if we have cross region replication enabled on a bucket ?Amazon Web Services (AWS)
Ans. No, delete markers are not replicated.

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 Q141. Can we do replication within the same region i.e into a new bucket within same region ?Amazon Web Services (AWS)
Ans. No. Replication is only allowed across regions. We can manually copy into other bucket though.

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 Q142. Can we do replication to multiple regions and buckets simultaneously ?Amazon Web Services (AWS)
Ans. No, its not allowed currently.

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 Q143. How can we archieve S3 objects after certain interval ?Amazon Web Services (AWS)
Ans. We can use S3 lifecycle management to transition older objects into AWS Glacier.

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 Q144. Can we do Lifecycle management in S3 without versioning enabled ?Amazon Web Services (AWS)
Ans. Yes

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 Q145. Can we log all S3 accesses ?Amazon Web Services (AWS)
Ans. Yes

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 Q146. What are the different types of encryption provided by AWS S3 ?Amazon Web Services (AWS)
Ans. In Transit ( SSL / TSL )
At Rest Server Encryption ( SSE-S3, SSE-KMS, SSE-C )

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 Q147. Which AWS service can help S3 with distribution data ?Amazon Web Services (AWS)
Ans. AWS CloudFront

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 Q148. Does S3 prices vary by region ?Amazon Web Services (AWS)
Ans. Yes

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 Q149. What is CDN ? Which AWS service is used for it ?Amazon Web Services (AWS)
Ans. CDN is Content Delivery Network
AWS CloudFront provides CDN service

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 Q150. What is origin and distribution wrt to AWS CloudFront ?Amazon Web Services (AWS)
Ans. Origin is the origin of File or services which CloudFront distributes like S3 in US East-1

Distribution is the combination of Edge locations that helps in the distribution of content / service.

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