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Interview Questions and Answers - Order By Newest

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 Q211. Why serverless is called serverless if there are actually servers serving the requests ?Infrastructure
Ans. Because Vendors need not worry about provisioning , managing and maintaining the servers and it's intrinsically taken care of by AWS.

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   Like         Discuss         Correct / Improve     Amazon Web Services (AWS)  aws serverless  aws lambda  aws serverless computing  amazon cloud serverless computing  amazon lambda


 Q212. What is Amazon Polly ?Amazon Web Services (AWS)
Ans. It's a service to convert text to speech.

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 Q213. Why it takes longer to create first volume snapshot but subsequent snapshots are faster ?Amazon Web Services (AWS)
Ans. Because AWS stores subsequent snapshots as only incremental information.

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   Like         Discuss         Correct / Improve     aws ebs snapshot


 Q214. Can we delete a snapshot of EBS that is used as the root device of a registered AMI ?Amazon Web Services (AWS)
Ans. No, We need to de register it first.

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 Q215. What is the use case of AWS Placement Group ?Amazon Web Services (AWS)
Ans. Computing that would require high network throughput and low latency within a single availability zone.

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 Q216. What is the DNS port no ?Networking
Ans. 53

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   Like         Discuss         Correct / Improve     Amazon Web Services (AWS)  DNS


 Q217. How does Route53 support naked domain names ?Amazon Web Services (AWS)
Ans. Through Aliasis

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 Q218. Difference between Route53 aliasis and cname ?Amazon Web Services (AWS)
Ans. Cname doesn't support naked domain names whereas aliasis does.

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   Like         Discuss         Correct / Improve     aws route53     Asked in 3 Companies


 Q219. What are the advantages of using Aliasis over Cname in Route53 ?Amazon Web Services (AWS)
Ans. 1. Supports naked domain names
2. Any change in ELB IP is automatically updated in Route53

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 Q220. What is the default limit of domain supported by Route 53 ?Amazon Web Services (AWS)
Ans. 50

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 Q221. Difference between multi AZ RDS and Read replicas ?Amazon Web Services (AWS)
Ans. Multi AZ RDS is for disaster recovery and failover whereas Read replicas are for scaling.

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 Q222. What is the limit of read replicas per database ?Amazon Web Services (AWS)
Ans. 5

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 Q223. What is the ideal use case for DynamoDB ?Amazon Web Services (AWS)
Ans. Fast reads
Much more reads than writes

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 Q224. Which Route53 routing policy is best, keeping in mind the response time ?Amazon Web Services (AWS)
Ans. Latency

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 Q225. Does Route53 supports MX records ?Amazon Web Services (AWS)
Ans. Yes

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 Q226. What are the factors on which RedShift is priced on ?Amazon Web Services (AWS)
Ans. Compute Node Hours
Backup
Data Transfer

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 Q227. If you need to spin multiple EC2 instances and then so a swap, How would you do that with minimal downtime ?Amazon Web Services (AWS)
 This question was recently asked at 'SparkPost'.This question is still unanswered. Can you please provide an answer.


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   Like         Discuss         Correct / Improve          Asked in 1 Companies


 Q228. Describe AWS VPC and subnets.Amazon Web Services (AWS)
Ans. VPC stands for Virtual Private Cloud. You can define a VPC and subnets for a region in AWS and that can be used to access shared resources on the cloud. For eg: API gateway to access any file on S3.

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   Like         Discuss         Correct / Improve     aws vpc  aws subnets     Asked in 3 Companies


 Q229. Which AWS service we can use Docker with ?Amazon Web Services (AWS)
Ans. EKS

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 Q230. Explain how CDN works ?Amazon Web Services (AWS)
 This question was recently asked at 'Imperva'.This question is still unanswered. Can you please provide an answer.


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 Q231. Can you explain what are NAT instances and what are they used for ?Amazon Web Services (AWS)
Ans. If instances in private subnet need to access internet without exposing the IP address to outside world , we use Nat gateway or nat instance. So there is a direct outbound traffic but not direct inbound traffic.

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 Q232. What is your experience with AWS EMR ?Amazon Web Services (AWS)
 This question was recently asked at 'Cognizant (CTS)'.This question is still unanswered. Can you please provide an answer.


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 Q233. How to design a scalable S3 service ?Amazon Web Services (AWS)
 This question was recently asked at 'Amazon'.This question is still unanswered. Can you please provide an answer.


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   Like         Discuss         Correct / Improve     aws s3  aws storage  amazon cloud storage  amazon s3     Asked in 1 Companies


 Q234. Difference between EC2 and S3 ?Amazon Web Services (AWS)
Ans. Ec2 is a computing service whereas S3 is a object based storage.

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 Q235. If you need 20000 IOPS, which EBS type should you use?Amazon Web Services (AWS)
Ans. Provisioned IOPS SSD

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 Q236. A company is planning to store documents in AWS storage, their requirement is initially when they store any documents they need to be available readily to download and after 15 days documents need not be readily available to download. Which type of storage will you choose?Amazon Web Services (AWS)
Ans. S3 standard, and then to Glacier.

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 Q237. What is the limit for Ec2 SSH sessions ?Amazon Web Services (AWS)
Ans. Max sessions limit is defined in sshd_config. Default is set to 10 but can be overridden.

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 Q238. Difference between Internet Gateway and Virtual private Gateway ?Amazon Web Services (AWS)
Ans. Internet gateway is a public gateway i.e allows direct http access whereas Virtual private gateway doesn't allow direct http access ( through VPN )

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   Like         Discuss         Correct / Improve     aws vpc


 Q239. How can we specify / restrict communication between subnets ?Amazon Web Services (AWS)
Ans. route tables

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 Q240. Can we have more than 1 internet gateway for a VPC in AWS ?Amazon Web Services (AWS)
Ans. No

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