Amazon Web Services (AWS) - Interview Questions and Answers for 'Aws ec2' | Search Interview Question - javasearch.buggybread.com

Javasearch.buggybread.com

Search Interview Questions

More than 3000 questions in repository.

There are more than 900 unanswered questions.
Click here and help us by providing the answer.

Have a video suggestion.
Click Correct / Improve and please let us know.

Submit Question

Amazon Web Services (AWS) - Interview Questions and Answers for 'Aws ec2' - 44 question(s) found - Order By Newest

next 30

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

Help us improve. Please let us know the company, where you were asked this question :

_{Like Discuss Correct / Improve aws ec2 aws computing amazon cloud computing amazon ec2 aws s3 aws storage amazon cloud storage amazon s3 aws cloudfront amazon cloudfront aws ebs}

Q2. What is the use case for "On Demand" EC2 ?

Amazon Web Services (AWS)

Ans. If the computation required is Spiky and unpredictable.

If it's first time use.

If the lifespan of the application isn't known.

Help us improve. Please let us know the company, where you were asked this question :

_{Like Discuss Correct / Improve aws ec2 aws computing amazon cloud computing amazon ec2}

Q3. What is the use case for "Spot" EC2 plan ?

Amazon Web Services (AWS)

Ans. If the usage is non continuous and have flexible start and End Time. For ex - Analysis , Research , mining etc.

Help us improve. Please let us know the company, where you were asked this question :

_{Like Discuss Correct / Improve aws ec2 aws computing amazon cloud computing amazon ec2 spot}

Q4. What are the different price options available for EC2 ?

Amazon Web Services (AWS)

Ans. On Demand
Reserved
Spot
Dedicated Host

Help us improve. Please let us know the company, where you were asked this question :

_{Like Discuss Correct / Improve aws ec2 aws computing amazon cloud computing amazon ec2}

Q5. What EC2 configuration would you use if you have to use it for Bitcoin mining ?

Amazon Web Services (AWS)

Ans. Keeping Low cost for processing , i would choose

Spot Price Plan
F1 or P3 Instance Type
Cold Hdd (SCI ) EBS Volume

Help us improve. Please let us know the company, where you were asked this question :

_{Like Discuss Correct / Improve aws ec2 aws computing amazon cloud computing amazon ec2}

Q6. Which AWS services would you use if you have find a cheapest solution for an analytics application ?

Amazon Web Services (AWS)

Ans. Computation

Spot Price Plan
F1 or P3 Instance Type
Cold Hdd (SCI ) EBS Volume

Storage

S3-IA

Help us improve. Please let us know the company, where you were asked this question :

_{Like Discuss Correct / Improve aws computation aws ec2 aws computing amazon cloud computing amazon ec2}

Q7. Can a EC2 instance have multiple Security Groups ? Can a single security group be assigned to multiple Ec2 instances ? If either of them is true , doesn't it result in conflict ?

Amazon Web Services (AWS)

Ans. We can assign multiple security groups to single instance and we can use single security group with multiple instances.

It never results in conflict as security groups only have allow rules and no deny rules. Multiple security groups for an instance results in union of all rules.

Help us improve. Please let us know the company, where you were asked this question :

_{Like Discuss Correct / Improve aws ec2 aws computing amazon cloud computing amazon ec2 aws security group}

Q8. What are the reasons to choose between reserved and on demand instances ?

Ans. In terms of compute options and configurations, Reserved Instances and On Demand instances are the same. The only difference between the two is that a Reserved Instance is one you rent (reserved) for a fixed duration, and in return you receive a discount on the base price of an On Demand instance.

Help us improve. Please let us know the company, where you were asked this question :

_{Like Discuss Correct / Improve aws aws ec2 aws computing amazon cloud computing amazon ec2 production support Google Cloud Platform (GCP)}

Q9. What are the drawbacks of using Spot EC2 instances ?

Amazon Web Services (AWS)

Ans. You cannot reserve the time slot and they can be made to use whenever they are available.

AWS can Terminate the EC2 instance on their own even if it's in use.

Help us improve. Please let us know the company, where you were asked this question :

_{Like Discuss Correct / Improve aws ec2 aws computing amazon cloud computing amazon ec2 aws ec2 aws computing amazon cloud computing amazon ec2 spot}

Q10. What is the purpose of EC2 Health check ?

Amazon Web Services (AWS)

Ans. We can use this check for variety of things -

1. Monitoring the status / Alarms in case it's down
2. Regulating traffic to healthy instances only through Load Balancer

Help us improve. Please let us know the company, where you were asked this question :

_{Like Discuss Correct / Improve aws ec2 aws computing amazon cloud computing amazon ec2}

Q11. What are the advantages and disadvantages of using Lambda over EC2 ?

Amazon Web Services (AWS)

Ans. Advantages -

Much Cheaper
Continuous scaling
Higher level and Serverless

Disadvantages -

Warm up time
Limited flexibility in terms of technologies
Limited control

Help us improve. Please let us know the company, where you were asked this question :

_{Like Discuss Correct / Improve aws lambda aws serverless computing amazon cloud serverless computing amazon lambda aws ec2 aws computing amazon cloud computing amazon ec2}

Q12. Can we associate a single EFS volume with multiple EC2 instances ?

Amazon Web Services (AWS)

Ans. Yes

Help us improve. Please let us know the company, where you were asked this question :

_{Like Discuss Correct / Improve aws efs volume aws ec2 aws computing amazon cloud computing amazon ec2}

Q13. How would you secure EC2, Volume and Snapshots in Cloud ?

Amazon Web Services (AWS)

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

Help us improve. Please let us know the company, where you were asked this question :

_{Like Discuss Correct / Improve aws ec2 aws computing amazon cloud computing amazon ec2 aws ebs volume snapshot Asked in 1 Companies}

Q14. What is mounting in AWS ?

Amazon Web Services (AWS)

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

Help us improve. Please let us know the company, where you were asked this question :

_{Like Discuss Correct / Improve aws ebs aws efs aws ec2 aws computing amazon cloud computing amazon ec2 aws eks}

Q15. What is Amazon EC2 ?

Amazon Web Services (AWS)

Ans. Amazon Elastic Compute Cloud or EC2 provides scalable computing capacity in the AWS cloud. It can be used to create Virtual Environments , storage and configure. EC2 enables to upgrade or downgrade infrastructure according to the rules defined ( with fluctuation in latency, traffic etc )

Help us improve. Please let us know the company, where you were asked this question :

_{Like Discuss Correct / Improve aws aws ec2 aws computing amazon cloud computing amazon ec2 Elastic Compute Cloud Amazon Elastic Compute Cloud Asked in 2 Companies}

Q16. What is the difference between Reserved and On Demand instance ?

Amazon Web Services (AWS)

Ans. On demand instance is normal instance means if you create first time so you can use on demand instance, in this instance you can create simple server like 2 gb RAM, 1 core CPU, GP2 30 GB SSD....etc.

and Reserved instance is you can create server and its reserved for 2-3 years and when you give back to this server on AWS they give you discount but on demand and reserved instance price are same.

Help us improve. Please let us know the company, where you were asked this question :

_{Like Discuss Correct / Improve AWS Ec2}

Q17. What is EC2 and EC2 instance ?

Amazon Web Services (AWS)

Ans. EC2 is elastics compute cloud is one of the amazon service and ec2 instance is one type of virtual server which you create from AMI.

Help us improve. Please let us know the company, where you were asked this question :

_{Like Discuss Correct / Improve amazon ec2 aws ec2 aws computing amazon cloud computing amazon ec2}

Q18. What are some of the computation services provided by AWS ?

Amazon Web Services (AWS)

Ans. EC2, EKS, EKC , Lambda

Help us improve. Please let us know the company, where you were asked this question :

_{Like Discuss Correct / Improve aws ec2 aws computing amazon cloud computing amazon ec2}

Q19. What are the benefits of using AWS Lambda over EC2 ?

Amazon Web Services (AWS)

^{This question is still unanswered. Can you please provide an answer.}

Help us improve. Please let us know the company, where you were asked this question :

_{Like Discuss Correct / Improve AWS AWS Lambda AWS EC2}

Q20. Can we reserve resources in AWS Lambda just like we do for Ec2 instances ?

Amazon Web Services (AWS)

Ans. You can have reserved capacity with AWS Lambda. This guarantees that this number of concurrent Lambdas are always available for that function.

Help us improve. Please let us know the company, where you were asked this question :

_{Like Discuss Correct / Improve aws aws lambda aws serverless computing amazon cloud serverless computing amazon lambda aws ec2 aws computing amazon cloud computing amazon ec2}

Q21. How do you usually choose which type of EC2 Instance you would like to Use ?

Amazon Web Services (AWS)

Ans. Depend on its pricing module

Help us improve. Please let us know the company, where you were asked this question :

_{Like Discuss Correct / Improve aws ec2 aws computing amazon cloud computing amazon ec2}

Q22. What is the default limit on number of EC2 instances in each region ?

Amazon Web Services (AWS)

Ans. 20

Help us improve. Please let us know the company, where you were asked this question :

_{Like Discuss Correct / Improve EC2 aws ec2 aws computing amazon cloud computing amazon ec}

Q23. What is the use case for "Reserved" EC2 plan ?

Amazon Web Services (AWS)

Ans. If the usage is continuous , stable and predictable.

Help us improve. Please let us know the company, where you were asked this question :

_{Like Discuss Correct / Improve aws ec2 aws computing amazon cloud computing amazon ec2 reserved}

Q24. 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.

Help us improve. Please let us know the company, where you were asked this question :

_{Like Discuss Correct / Improve aws ec2 aws computing amazon cloud computing amazon ec2 dedicated host}

Q25. Which EC2 instance type should be used if the application is memory intensive ?

Amazon Web Services (AWS)

Ans. R4

Help us improve. Please let us know the company, where you were asked this question :

_{Like Discuss Correct / Improve aws ec2 aws computing amazon cloud computing amazon ec2}

Q26. Which is the cheapest EC2 instance type ?

Amazon Web Services (AWS)

Ans. T

Help us improve. Please let us know the company, where you were asked this question :

_{Like Discuss Correct / Improve aws ec2 aws computing amazon cloud computing amazon ec2 instance type}

Q27. What are the different EC2 instance types ?

Amazon Web Services (AWS)

Ans. F,I,G,H,T,D,R,M,C,P,X

Help us improve. Please let us know the company, where you were asked this question :

_{Like Discuss Correct / Improve aws ec2 aws computing amazon cloud computing amazon ec2 aws ec2 aws computing amazon cloud computing amazon ec2 instance type}

Q28. Which is the most common EC2 instance Type ?

Amazon Web Services (AWS)

Ans. T and M

Help us improve. Please let us know the company, where you were asked this question :

_{Like Discuss Correct / Improve aws ec2 aws computing amazon cloud computing amazon ec2 aws ec2 aws computing amazon cloud computing amazon ec2 instance type}

Q29. Can we change the instance Type while it's running ?

Amazon Web Services (AWS)

Ans. No

Help us improve. Please let us know the company, where you were asked this question :

_{Like Discuss Correct / Improve aws ec2 aws computing amazon cloud computing amazon ec2}

Q30. 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.

Help us improve. Please let us know the company, where you were asked this question :

_{Like Discuss Correct / Improve aws ebs aws ebs volume aws ec2 aws computing amazon cloud computing amazon ec2}

next 30