Aws most popular interview questions

Aws most popular interview questions

1】. What are the important features of a classic load balancer in EC2 ? 

● The high availability feature ensures that the traffic is distributed among EC2 instances in single or multiple availability zones.This ensures high scale of availability for incoming traffic. 

• Classic load balancer can decide whether to route the traffic or not based on the results of health check. 

• You can implement secure load balancing within a network  by creating security groups in a VPC. 

• Classic load balancer supports sticky sessions which ensure that the traffic from a user is always routed to the same instance for a seamless experience. 

2.】 What parameters will you take into consideration when choosing the availability zone ? 

● Performance, pricing, latency, and response time are some of the factors to consider when selecting the availability zone. 

3.】 Which instance will you use for deploying a 4-node Hadoop cluster in AWS ? 

● We can use a c4.8x large instance or i2.large for this, but using a c4.8x will require a better configuration on PC. 

4.】 Will you use encryption for S3 ? 

● It is better to consider encryption for sensitive data on S3 as it is a proprietary technology. 

5.】 How can you send request to Amazon S3 ? 

● Using the REST API or the AWS SDK wrapper libraries which wrap the underlying Amazon S3 REST API.