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.
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