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 Q2881. Can EBS Volume be encrypted ?Amazon Web Services (AWS)
Ans. Yes but not the root volume of default AMIs.

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   Like         Discuss         Correct / Improve     aws ebs  aws volume  aws ebs volume

 Q2882. 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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 Q2883. Can we use magnetic storage as Root Volume ?Amazon Web Services (AWS)
Ans. Yes , but only Magnetic standard.

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 Q2884. 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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   Like         Discuss         Correct / Improve     aws ec2  aws computing  amazon cloud computing  amazon ec2  aws ebs

 Q2885. Can we modify volume while attached EC2 is running ?Amazon Web Services (AWS)
Ans. Yes, except Magnetic standard

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

 Q2886. 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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 Q2887. Can we create an AMI using volumes ?Amazon Web Services (AWS)
Ans. Yes , We can create snapshots with Volumes and then AMIs with Snapshots.

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   Like         Discuss         Correct / Improve     aws ami  amazon ami

 Q2888. Where are snapshots internally stored by AWS ?Amazon Web Services (AWS)
Ans. In S3

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 Q2889. How can we create our own AMI ?Amazon Web Services (AWS)
Ans. Volume -> Snapshot -> AMI

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 Q2890. Can we create AMI with encrypted snapshots ?Amazon Web Services (AWS)
Ans. No they need to be unencrypted before an AMI is created.

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 Q2891. Difference between AMI EBS based and AMI Instance Store based ?Amazon Web Services (AWS)
 This question is still unanswered. Can you please provide an answer.


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 Q2892. Explain difference between web-based application and Core Java Application ?Java
 This question was recently asked at 'Tripod'.This question is still unanswered. Can you please provide an answer.


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 Q2893. How would you securely migrate a database to RDS?Amazon Web Services (AWS)
 This question was recently asked at 'Cognizant (C?TS),Overstock'.This question is still unanswered. Can you please provide an answer.


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   Like         Discuss         Correct / Improve     aws rds  aws database  amazon cloud database     Asked in 2 Companies

 Q2894. What are the different types of AWS Load Balancers ?Amazon Web Services (AWS)
Ans. Application , Network and Classic

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   Like         Discuss         Correct / Improve     aws elb  amazon elb

 Q2895. Difference between internal and external Load Balancer ?Amazon Web Services (AWS)
Ans. Internal Load balancer is used for services which are for internal consumption only and hence doesn't need to direct Web traffic.

External Load balancers are for regulating web traffic.

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 Q2896. Are CloudWatch metrics available with free tier ?Amazon Web Services (AWS)
Ans. Only Basic not advanced

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 Q2897. What are the Default metrics available for EC2 in CloudWatch ?Amazon Web Services (AWS)
Ans. CPU, Disk, Network, Status

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 Q2898. How frequently Cloudwatch monitor AWS services for generating metrics ?Amazon Web Services (AWS)
Ans. 5 mins for Standard / Basic
1 min for Detailed / advanced

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 Q2899. Difference between CloudWatch and CloudTrail ?Amazon Web Services (AWS)
Ans. CloudWatch is for monitoring resources whereas CloudTrail is for auditing activity.

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 Q2900. Somebody changed the permissions on a S3 bucket, Which Aws service can help locate the user who performed the action ?Amazon Web Services (AWS)
Ans. CloudTrail

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 Q2901. What is a base class ? Is Abstract class and Base class the same thing ?Core Java
Ans. Base Class is a relative term. For example - Class Vehicle is a Base class of Class Car. Even though Base class is derived in this case , there is no restriction on instantiation of Vehicle class.

Abstract Class is a class that is meant only to be a Base Class and not allowed to be instantiated.

Abstract Class is a Base Class that isn't allowed to be instantiated and is only meant for carrying definition to derived class and help participate in runtime polymorphism.

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 Q2902. What is the relationship between Base Class and Abstract Class ?Core Java
Ans. Abstract Class is a class that's only allowed to be a Base class for it's usage. It can never be instantiated on it's own.

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   Like         Discuss         Correct / Improve     base class  abstract class      basic

 Q2903. Can an abstract class be a derived class ?Core Java
Ans. Yes, an abstract class can extend another class.

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 Q2904. Can a method return more than one value at a time in Java ?Core Java
Ans. object / native type returned can only be one but an object can comprise of a array , collection or a group of different value types.

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   Like         Discuss         Correct / Improve     java methods

 Q2905. What is the default size of list ? How it is growable ?Core Java
Ans. Default size is 10.
Regard how size will increase.

Inside add() method there is one method called ensureCapacity() which will check list has enough size available.

This ensureCapacity() method if found size of list need to increase then it will call grow() method which will create new list of extra size and copy existing list data to new one and return.

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   Like         Discuss         Correct / Improve     list  default size of list     Asked in 1 Companies

 Q2906. Git Commit with commentsGit
Ans. git commit -m '<Comment>'

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 Q2907. 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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   Like         Discuss         Correct / Improve     aws ec2  aws computing  amazon cloud computing  amazon ec2  aws elb  amazon elb

 Q2908. What are different types of EC2 Placement Groups in AWS ? What is the difference between them ?Amazon Web Services (AWS)
Ans. Clustered and Spread

All instances in Clustered group is in same availability zone and whereas instances in spread could be in different az or regions.

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 Q2909. Can we use all EC2 instance types in placement group ?Amazon Web Services (AWS)
Ans. No, only the following type are allowed

Compute Optimized
GPU
Memory Optimized
Storage Optimized

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 Q2910. Can we merge placement groups ?Amazon Web Services (AWS)
Ans. No

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