Cognizant AWS INTERVIEW QUESTIONS

Here is the list of AWS Interview Questions which are recently asked in Cognizant company. These questions are included for both Freshers and Experienced professionals.

1. What is the role of AWS CloudTrail?

The role of AWS Cloud Trail is a service that helps to log, monitor and retain account activity across the AWS infrastructure that enables governance, operational auditing, and risk auditing of the user AWS account.

2. Explain Amazon ElasticCache

Amazon ElastiCache is web service in-memory data store and cache service which helps to improve the performance of web applications by retrieving information which is fully managed in memory caches.

3. What is AWS Lambda?

AWS Lambda is a Platform as a Service helps you to run, execute backend code and also Deploy and manage the apps on AWS Cloud which does not depend upon the infrastructure.

4. Name the types of AMI provided by AWS

AWS includes EBS snapshots. Control permission launch, block device mapping which allows multiple instances to be created, to copy and deregister whenever needed. In AMI, the instance type, kernel, RAM disk, and user data can be changed while the instance is stopped.

5. Name the AWS service exists only to redundantly cache data and images?

In Amazon S3, data can be stored in the outpost on-premises environment when you manually choose to transfer it to an AWS Region. The data can be stored redundantly within a single availability Zone in the AWS region.

6. What is Amazon EMR?

Amazon EMR stands for Amazon Elastic MapReduce (EMR) is software framework which helps developers to code that process large amounts of data in any type of processor for big data processing and analysis.

7. What are the important features of Amazon cloud search?

The Amazon Cloud Search supports powerful search features including any type of search like free text, Boolean, and Faceted search, Autocomplete suggestions, query-time rank expressions.

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8. What are the storage class available in Amazon s3?

The storage class available in Amazon s3 includes S3 Intelligent-Tiering for data, S3 Standard-Infrequent Access (S3 Standard-IA) and S3 One Zone-Infrequent Access (S3 One Zone-IA).

9. How can you send a request to Amazon S3?

Requests can be sent to Amazon S3 using the AWS SDK wrapper libraries that wrap the Amazon S3 REST API to simplify the programming tasks in which interaction is either authenticated or anonymous.

10. Explain can you vertically scale an Amazon instance? How?

The capacity of the EC2 instance can be increased using vertical scaling to manage the growing demands of the application .Vertical Scaling is done by adding more power e.g. CPU, RAM) up to 488 GB of RAM or 128 virtual cores to an existing machine.

11. What is a Serverless application in AWS?

The AWS Serverless Application Model (SAM) is an open-source framework for building serverless applications. SAM CLI provides a Lambda-like execution environment that lets you locally build, test, and debug applications defined by SAM templates. You can also use the SAM CLI to deploy your applications to AWS.

12. What is Redshift?

Redshift lets you easily save the results of your queries back to your S3 data lake using open formats, like Apache Parquet, so that you can do additional analytics from other analytics services like Amazon EMR, Amazon Athena, and Amazon Sage Maker.

13. What Are The Components Involved In Amazon Web Services?

Key components

Amazon Cluster.
Storage.
Databases.
Management and security.
Networks.
Analytics.
Application services.
Implementation and management.

14. Distinguish Between Scalability And Flexibility?

In terms of AWS: Scalability refers to the ability for your resources to increase or decrease in size or quantity. Elasticity is the ability for your resources to scale in response to stated criteria.

15. What Are The Main Features Of Amazon Cloud Front?

Amazon CloudFront offers programmable and secure edge CDN computing capabilities through CloudFront Functions and AWS Lambda@Edge. CloudFront Functions is ideal for high scale and latency sensitive operations like HTTP header manipulations, URL rewrites/redirects, and cache-key normalizations.

16. What Is Amazon Ec2 Service?

EC2 encourages scalable deployment of applications by providing a web service through a user who boots AMI to configure a virtual machine containing any software desired.

17. What Are The Features Of The Amazon Ec2 Service?

The Features of Amazon EC2 service provides a number of powerful features with scalable, enterprise class applications and direct access to the processor and memory of the underlying server.

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Cognizant AWS INTERVIEW QUESTIONS