AWS Interview Questions
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1. What is Cross Region Replication?
Cross Region Replication is a service available in aws that enables to replicate the data from one bucket to another bucket which could be in a same or different region. It provides asynchronous copying of objects, i.e., objects are not copied immediately.
2. What is the minimum and maximum size that you can store in S3?
The minimum size of an object that you can store in S3 is 0 bytes and the maximum size of an object that you can store in S3 is 5 TB.
3. What does an AMI include?
An AMI includes the following things
·????????A template for the root volume for the instance
·????????Launch permissions decide which AWS accounts can avail the AMI to launch instances
·????????A block device mapping that determines the volumes to attach to the instance when it is launched
4. How can you send a request to Amazon S3?
Amazon S3 is a REST service, and you can send a request by using the REST API or the AWS SDK wrapper libraries that wrap the underlying Amazon S3 REST API.
5. What is an EIP?
EIP (Elastic IP address) is a service provided by an EC2 instance. It is basically a static IP address attached to an EC2 instance. This address is associated with your AWS account not with an EC2 instance. You can also disassociate your EIP address from your EC2 instance and map it to another EC2 instance in your AWS account.
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6. What is a snowball?
Snowball is a petabyte-scale data transport solution that uses secure appliances to transfer large amounts of data into and out of aws cloud.
7. What is VPC?
VPC stands for Virtual Private Cloud. It is an isolated area of the AWS cloud where you can launch AWS resources in a virtual network that you define. It provides a complete control on your virtual networking environment such as selection of an IP address, creation of subnets, configuration of route tables and network gateways.
8. What are NAT Gateways?
NAT stands for?Network Address Translation. It is an aws service that enables to connect an EC2 instance in private subnet to the internet or other AWS services. If you want to know more about NAT Gateways.
9. Explain what T2 instances is?
T2 instances are designed to provide moderate baseline performance and the capability to burst to higher performance as required by the workload.
10. ?In VPC with private and public subnets, database servers should ideally be launched into which subnet?
With private and public subnets in VPC, database servers should ideally launch into private subnets.
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