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 Q151. 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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 Q152. Can we do Lifecycle management in S3 without versioning enabled ?Amazon Web Services (AWS)
Ans. Yes

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 Q153. Can we log all S3 accesses ?Amazon Web Services (AWS)
Ans. Yes

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 Q154. 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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 Q155. Which AWS service can help S3 with distribution data ?Amazon Web Services (AWS)
Ans. AWS CloudFront

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 Q156. Does S3 prices vary by region ?Amazon Web Services (AWS)
Ans. Yes

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 Q157. 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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 Q158. 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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 Q159. What are the different things we can restrict CloudFront access on ?

Amazon Web Services (AWS)
Ans. 1. Protocol ( http, https )
2. Url Pattern ( *, /abc* )
3. Operation ( Put , Post , Delete etc )
4. Geo

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 Q160. How can we restrict CloudFront Access ?Amazon Web Services (AWS)
Ans. Price Class
Geo Targeting
Signed Urls , Signed Cookies

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 Q161. What could be done if we try to upload a file larger than the allowed size in S3 ?Amazon Web Services (AWS)
Ans. We can use multi part upload API

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 Q162. What is the use case of aws S3-IA ?Amazon Web Services (AWS)
Ans. IA stands for infrequently accessed and hence it's suited for files / objects are expected to be accessed infrequently.

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 Q163. What is the use case for Amazon Glacier ?Amazon Web Services (AWS)
Ans. Amazon Glacier is used for storing archieved files / objects and hence well suited for files where retrieval time isn't that important.

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 Q164. What is the use case for "Reserved" EC2 plan ?Amazon Web Services (AWS)
Ans. If the usage is continuous , stable and predictable.

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 Q165. What is the use case for "Dedicated Host" EC2 plan ?Amazon Web Services (AWS)
Ans. If there are regulatory requirements, or proprietary license to be used.

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 Q166. Which EBS Volume is suitable if we need to install SQL with every high requests per second ?Amazon Web Services (AWS)
Ans. We can use "Provisioned IOPS SSD"

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 Q167. Which EC2 instance type should be used if the application is memory intensive ?Amazon Web Services (AWS)
Ans. R4

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 Q168. Which is the cheapest EC2 instance type ?Amazon Web Services (AWS)
Ans. T

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 Q169. Can we have EBS Volumes in S3 ?Amazon Web Services (AWS)
Ans. No , S3 is an object storage and not a Block Storage. But EBS Volume snapshots are internally stored in S3.

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 Q170. What are the different EC2 instance types ?Amazon Web Services (AWS)
Ans. F,I,G,H,T,D,R,M,C,P,X

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 Q171. Which EBS Volume type cannot be used as a root volume ?
Amazon Web Services (AWS)
Ans. Throughput Optimal HDD and Cold HDD

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 Q172. What is the use case of AWS CloudFront ?Amazon Web Services (AWS)
Ans. Faster availability and uploading of files and content.

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 Q173. What is the use case of S3 Cross Region replication ?Amazon Web Services (AWS)
Ans. Disaster Recovery and availability

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 Q174. What is the need of S3 Transitioning ?Amazon Web Services (AWS)
Ans. Saving Cost by either expiring objects or moving to low cost storage.

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 Q175. What is the use case for AWS Snowball ?Amazon Web Services (AWS)
Ans. Faster upload of Content through Physical device instead of low speed internet connection.

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 Q176. What is the use case for Geo Targeting / Price Class within AWS CloudFront ?Amazon Web Services (AWS)
Ans. Saving cost by optimizing content retrieval or upload in certain Geographies.

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 Q177. Which is the most common EC2 instance Type ? Amazon Web Services (AWS)
Ans. T and M

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 Q178. Can we change the instance Type while it's running ?Amazon Web Services (AWS)
Ans. No

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 Q179. Import / Export can import data set from ..Amazon Web Services (AWS)
Ans. S3, EBS and Glacier

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 Q180. Which AWS services provide automated backups ?Amazon Web Services (AWS)
Ans. RDS, RedShift and Elastic Cache

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