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Amazon Web Services (AWS) - Interview Questions and Answers for 'Cloud Computing' - 57 question(s) found - Order By Rating

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 Q1. What are system integrators in Cloud Computing?Cloud Computing
 This question is still unanswered. Can you please provide an answer.


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   Like         Discuss         Correct / Improve     Amazon Web Services (AWS)   Google Cloud Platform (GCP)

 Q2. How would you secure resources in Cloud ?Cloud Computing
Ans. There are multiple types of security GCP provides to every customer. Data, Network, Compute, and Services. Each service have its own security layer and Google provides clients to build as per the GCP best practices like building VPC, IAM, Firewall rules and so on

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   Like         Discuss         Correct / Improve     Google Cloud Platform (GCP)     Asked in 1 Companies

 Q3. How On demand Self Service helps saving cost ?Cloud Computing
Ans. On Demand service restricts cost by paying only for the use and Self Service saves cost by reducing intermediary human resource cost.

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 Q4. How Resource Pooling helps saving cost ?Cloud Computing
Ans. With resource pooling and Pay as per use , Bigger companies like Google and Amazon can buy Large physical hardware and employ economy of scale and hence resulting in cost saving for customers.

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   Like         Discuss         Correct / Improve     Google Cloud Platform (GCP)

 Q5. Why would a cloud customer use resources in multiple regions and zones ?Cloud Computing
Ans. 1. Fault Tolerance
2. Better Access by bringing the application closer to the users.

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   Like         Discuss         Correct / Improve     Google Cloud Computing (GCP)  Amazon Web Services (AWS)  Availability Zones  Regions and Zones  Infrastructure

 Q6. How does cloud computing helps saves cost ?Cloud Computing
Ans. Cloud computing helps saving overall cost for infrastructure and service usage through following -

1. On demand Services and elasticity - You only pay for what you use. Less Ideal time.

2. Resource Pooling

3. Self Service - Less involvement of human resources

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   Like         Discuss         Correct / Improve     Google Cloud Platform (GCP)  Amazon Web Service (AWS

 Q7. What are the types of clouds in cloud computing ?Cloud Computing
Ans. Private, Public, Hybrid, Community

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 Q8. What is life cycle of cloud deployment process ?Cloud Computing
 This question was recently asked at 'Barclays'.This question is still unanswered. Can you please provide an answer.


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 Q9. What is mounting in AWS ?Amazon Web Services (AWS)
Ans. Attaching Volumes ( EBS / EFS ) on AWS Computing ( EC2, EKS )

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 Q10. 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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 Q11. 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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 Q12. 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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 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

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 Q14. 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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 Q15. Can we attach single volume to multiple Ec2 instances ?Amazon Web Services (AWS)
Ans. Yes EFS volumes but not EBS

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 Q16. Can we associate a single EFS volume with multiple EC2 instances ?Amazon Web Services (AWS)
Ans. Yes

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 Q17. Can we associate a single EBS volume with multiple EC2 instances ?Amazon Web Services (AWS)
Ans. No

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 Q18. 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

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 Q19. Are you using Auto Scaling for your EC2 instances ? How have you configured Auto scaling policy ?Amazon Web Services (AWS)
Ans. yes, you can create auto scaling policy to set max and min no of instance.

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 Q20. 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

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 Q21. Can we modify volume while attached EC2 is running ?Amazon Web Services (AWS)
Ans. Yes, except Magnetic standard

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 Q22. 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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 Q23. 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.

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 Q24. Which AWS service can be used to monitor EC2 ?Amazon Web Services (AWS)
Ans. CloudWatch

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 Q25. What is the difference between EC2 System status check and Instance status check ?Amazon Web Services (AWS)
Ans. System status check is to check if the power or network is working whereas Instance status check goes further and make sure that traffic is going through.

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 Q26. Can we protect EC2 instances from terminating accidentally ?Amazon Web Services (AWS)
Ans. Yes

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 Q27. Difference between EC2 instance public and private key ?Amazon Web Services (AWS)
Ans. public key is used for locking whereas private key is used for unlocking. public key can be used for locking multiple instances and hence can be shared.

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 Q28. 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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 Q29. Can we change the instance Type while it's running ?Amazon Web Services (AWS)
Ans. No

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 Q30. Which is the most common EC2 instance Type ? Amazon Web Services (AWS)
Ans. T and M

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