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Amazon Web Services (AWS) - Interview Questions and Answers for 'Aws ebs' - 22 question(s) found - Order By Newest

Q1. What are the factors on which price classes are based on in case of EC2, S3, CloudFront and EBS ?

Amazon Web Services (AWS)

Ans. EC2 - Time and Reservation , Instance Type ( Memory , Computation power )
S3 - Accessibility Frequency , Data Transfer , Storage Space
CloudFront - Geography, No of Locations
EBS - IOPS, Access Frequency

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Q2. What is a Volume Snapshot ?

Amazon Web Services (AWS)

Ans. Snapshots are point in time copies of Volume.

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Q3. Difference between EFS and EBS ?

Amazon Web Services (AWS)

Ans. Both EFS and EBS are block storage but EBS is reserved storage whereas EFS is On Demand.

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Q4. How would you secure EC2, Volume and Snapshots in Cloud ?

Amazon Web Services (AWS)

Ans. Adding more security group, it works like a firewall

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Q5. What is mounting in AWS ?

Amazon Web Services (AWS)

Ans. Attaching Volumes ( EBS / EFS ) on AWS Computing ( EC2, EKS )

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Q6. Which is the best approach that provides the lowest cost for Amazon elastic block store snapshots while giving you the ability to fully restore data?

Ans. Maintain the most current snapshot; archive the original and increment to Amazon Glacier.

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Q7. 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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Q8. 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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Q9. 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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Q10. Import / Export can import data set from ..

Amazon Web Services (AWS)

Ans. S3, EBS and Glacier

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Q11. How can EBS Volumes be backed up ?

Amazon Web Services (AWS)

Ans. Through Snapshots

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Q12. Does attached EBS volume get deleted if we terminate EC2 instance ?

Amazon Web Services (AWS)

Ans. By default, Root volume gets terminated whereas additional volume doesn't.

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Q13. Can EBS Volume be encrypted ?

Amazon Web Services (AWS)

Ans. Yes but not the root volume of default AMIs.

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Q14. Difference between AWS Root and Additional Volume ?

Amazon Web Services (AWS)

Ans. Root Volume is the primary volume used for installing operating system whereas Additional volume is just additional disk space.

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Q15. Can we use magnetic storage as Root Volume ?

Amazon Web Services (AWS)

Ans. Yes , but only Magnetic standard.

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Q16. Can we have EC2 and EBS in different availability zones or regions ?

Amazon Web Services (AWS)

Ans. No, they need to be local

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Q17. Can we modify volume while attached EC2 is running ?

Amazon Web Services (AWS)

Ans. Yes, except Magnetic standard

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Q18. Can we move volumes across regions or availability zones ?

Amazon Web Services (AWS)

Ans. Yes, We can do that through snapshots and AMI

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Q19. Can we associate a single EBS volume with multiple EC2 instances ?

Amazon Web Services (AWS)

Ans. No

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Q20. 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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Q21. 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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Q22. If you need 20000 IOPS, which EBS type should you use?

Amazon Web Services (AWS)

Ans. Provisioned IOPS SSD

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