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Q541. What is the difference between Programmatic access and console access ?

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Q542. Difference between administrative and power user access ?

Amazon Web Services (AWS)

Ans. Power Users don't have access to manage Users and Group permissions in IAM whereas Administrative users do.

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Q543. What is Power User Access in AWS ?

Amazon Web Services (AWS)

Ans. Access to all AWS Services except for management of groups and users within IAM.

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Q544. What are the advantage of having Edge Locations ?

Amazon Web Services (AWS)

Ans. It saves Network traffic and facilitates faster delivery by hosting bulk media and cached data near to client.

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Q545. Which AWS service is provided by Edge location ?

Amazon Web Services (AWS)

Ans. As Edge location only host cached content, Amazon CDN service or CloudFront is provided on these locations.

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Q546. Difference between Region , Availability zone and Edge Locations ?

Amazon Web Services (AWS)

Ans. A Region is a Geographical entity like US-East , US-West etc. Each Region may have multiple availability zones where each zone comprise of 1 or more Data Center located with each other.

Edge Locations are the sites that hosts cached content for faster delivery and for saving network traffic as they feed content from sites that are local or near to consumption.

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Q547. What are Database services in AWS ?

Amazon Web Services (AWS)

Ans. RDS, DynamoDB, Elastic Cache,Redshift,Neptune , DocumentDB

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Q548. Which region is the latest and most popular in AWS ? What are the advantages and disadvantages of using this region ?

Amazon Web Services (AWS)

Ans. US-East Virginia

This is the oldest and most popular region. All new features are rolled first in this region and hence they are first available there. The downside is that because of experimentation with new services, unavailability time is quite high.

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Q549. What are some of the AWS storage services ?

Amazon Web Services (AWS)

Ans. S3, EFS, Glacier

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Q550. What are different compute services in AWS ?

Amazon Web Services (AWS)

Ans. EC2, Lambda, EKS , ECR, ECS

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Q551. When was AWS launched ?

Amazon Web Services (AWS)

Ans. 2006

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Q552. Which was the first service launched by AWS ?

Amazon Web Services (AWS)

Ans. Simple Queue Service ( SQS )

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Q553. Why is cloud infrastructure so powerful ?

Cloud Computing

Ans. Because it gives the ability to provision infrastructure on Demand with No contracts and strings attached.

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Q554. How did you use Spring in your project ? Which Spring annotations have you used in your project ?

Spring

Ans. @RequestMappping

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Q555. Which AMI did you use for launching your EC2 instances ?

Amazon Web Services (AWS)

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Q556. What is the best AWS AMI for Data Science ?

Amazon Web Services (AWS)

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Q557. What does AMI include ?

Amazon Web Services (AWS)

Ans. A template for the instance.

Launch permission decisions

A block device mapping, when an instance is launched it determines the volumes to attach to that instances.

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Q558. What is the relationship between instances and AMI ?

Amazon Web Services (AWS)

Ans. AMI provides the templating for creation of instances. So a single image can be used to launch multiple instances.

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Q559. Difference between AWS Cloud Formation and AWS AMI ?

Amazon Web Services (AWS)

Ans. AMI is an Amazon Machine Image. It contains the configuration to enable to boot up an EC2 instance with said configuration whereas Cloud formation is a templating language that allows to describe how to build a VPC and also allows you to create AWS services

AMI is templating specific to instances whereas the scope of CloudFormation templating is much bigger. CloudFormation could use AMI for launching instances along with other services.

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Q560. How to work with dynamic webtable ?

Testing

Ans. List lists=driver.FindElements(xpath);
int row= lists.size();

List lists=driver.FindElements(xpath);
int column= lists.size();

String value=Rowtable.FindElement(xpath);
system.out.println(value);

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Q561. what is the difference between RC and webdriver

WebDriver

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Q562. what are the different status of a defect in Jira ?

Jira

Ans. Open, In Progress, Reopened, Closed, Resolved

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Q563. what is the testcase technique

Testing

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Q564. Difference between String constant and String non-constant pools?

Core Java

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Q565. Difference between "extend" and "implement" in java?

Core Java

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Q566. If you have to pull a sub string out of a string, which method would you use - using String methods or Pattern / Matcher ?

Design

Ans. It depends on how complex it is and if in future it would need any sort opf debugging. It's not easy to debug code if it's making heavy use of shortcuts like Lambda , Patterns etc.

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Q567. Can we serialize objects with only private variables in Java ?

Core Java

Ans. It depends on how we are serializing. The Serialization API doesn't worry about private variables and convert it into binary representation.

If we are using a library to map it to JSON / XML using XML Mappers, it may create trouble.

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Q568. How is a WAF different from ip tables ?

Amazon Web Services (AWS)

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Q569. You have a webserver on an ec2 instance. Your instance can get to the internet, but nobody on the internet can get to your webserver. Describe how you would troubleshoot.

Amazon Web Services (AWS)

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Q570. Design an e commerce application using AWS ? What AWS services will you use ?

Amazon Web Services (AWS)

Ans. CloudFront for Static Media and cached content
EC2 and EKS ( Docker ) for main application computing
RDS and DynamoDB for Database
Lambda ( computing ) for running back end cron jobs
Kinesis for streaming and SQS for queuing
CloudWatch for Monitoring
CloudFormation for Infrastructure templating
S3 for Object Storage

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