Aws Interview Questions And Answers For Java Developer

4 How can you recover/login to an EC2 instance for which you have lost the key?

Follow the steps provided below to recover an EC2 instance if you have lost the key:

  • Verify that the EC2Config service is running
  • Detach the root volume for the instance
  • Attach the volume to a temporary instance
  • Modify the configuration file
  • Restart the original instance
  • 3 Can S3 Be Used with EC2 Instances, and If Yes, How?

    Amazon S3Â can be used for instances with root devices backed by local instance storage. That way, developers have access to the same highly scalable, reliable, fast, inexpensive data storage infrastructure that Amazon uses to run its own global network of websites. To execute systems in the Amazon EC2 environment, developers load Amazon Machine s (AMIs) into Amazon S3 and then move them between Amazon S3 and Amazon EC2.

    Amazon EC2 and Amazon S3 are two of the best-known web services that make up AWS.

    What is geo-targeting in CloudFront?

    Geo-Targeting is a concept where businesses can show personalized content to their audience based on their geographic location without changing the URL. This helps you create customized content for the audience of a specific geographical area, keeping their needs in the forefront.

    26) What are the advantages of auto-scaling?

    Following are the advantages of autoscaling

  • Offers fault tolerance
  • Better availability
  • Better cost management
  • 9 How are reserved instances different from on-demand DB instances?

    Reserved instances and on-demand instances are the same when it comes to function. They only differ in how they are billed.

    Reserved instances are purchased as one-year or three-year reservations, and in return, you get very low hourly based pricing when compared to the on-demand cases that are billed on an hourly basis.

    8 What are the managed policies in AWS IAM?

    There are two types of managed policies; one that is managed by you and one that is managed by AWS. They are IAM resources that express permissions using IAM policy language. You can create, edit, and manage them separately from the IAM users, groups, and roles to which they are attached.

    38) Name the AWS service that exists only to redundantly cache data and images?

    AWS Edge locations are services that redundantly cache data and s.

    5 What Is Amazon Virtual Private Cloud (VPC) and Why Is It Used?

    AÂ VPCÂ is the best way of connecting to your cloud resources from your own data center. Once you connect your datacenter to the VPC in which your instances are present, each instance is assigned a private IP address that can be accessed from your data center. That way, you can access your public cloud resources as if they were on your own private network.

    5 When Would You Prefer Provisioned IOPS over Standard Rds Storage?

    You would use Provisioned IOPS when you have batch-oriented workloads. Provisioned IOPS delivers high IO rates, but it is also expensive. However, batch processing workloads do not require manual intervention.Â

    8) Mention what the difference between Amazon S3 and EC2 is?

    The difference between EC2 and Amazon S3 is that

    EC2 S3
    It is a cloud web service used for hosting your application It is a data storage system where any amount of data can be stored
    It is like a huge computer machine which can run either Linux or Windows and can handle applications like PHP, Python, Apache, or any databases It has a REST interface and uses secure HMAC-SHA1 authentication keys

    AWS Interview Questions | AWS Interview Questions And Answers 2022 | AWS Training | Simplilearn

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