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Q451. What is the difference between client side and server side encryption wrt to S3 objects ?

Ans. Client side encryption is done by the users on their machines whereas server side encryption is done by AWS when objects are uploaded in S3.

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Q452. Can we make objects public in a bucket which is not public ?

Amazon Web Services (AWS)

Ans. No

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Q453. What is the default visibility of buckets and objects when they are uploaded in S3 ?

Amazon Web Services (AWS)

Ans. private

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Q454. What kind of Access Policy should be kept on S3 Buckets and Policy ?

Amazon Web Services (AWS)

Ans. We should only allow access that's needed. So the security Policy should be as restrictive as possible.

Buckets and Files should never be made public unless until they are needed it to be like that.

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Q455. What status code is returned upon successful upload in S3 ?

Amazon Web Services (AWS)

Ans. 200

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Q456. What are the different ways to secure objects in S3 ?

Amazon Web Services (AWS)

Ans. Encryption - In Transit , Client Side , Server Side
Restrictive Access - ACL , Bucket Policy

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Q457. Can we host a website in S3 ?

Amazon Web Services (AWS)

Ans. Yes a static website can be hosted in S3.

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Q458. What are the factors on which customers are charged for using S3 ?

Amazon Web Services (AWS)

Ans. Storage Tier ( IA , Standard , Glacier etc )
Storage ( Volume of Data )
No of Requests
Meta Data
Data Transfer Speed acceleration through cache and Edge Location

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Q459. What are the different S3 storage Tiers ?

Amazon Web Services (AWS)

Ans. S3 Standard
S3 IA - Infrequently Accessed
S3 One Zone IA - One Zone only , Infrequently Accessed
S3 Glacier - achieved

S3 Standard is most expensive , Glacier is least expensive

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Q460. Within AWS S3, Why new files are available immediately for read operation but not the updates ?

Amazon Web Services (AWS)

Ans. Because new files will be fed from where ever they are first available but AWS have no way to identify which is the most updated version among the various regions. The updated version can only be assured once the replication to all availability zones is complete.

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Q461. Difference between Object based and Block based storage ?

Infrastructure

^{This question is still unanswered. Can you please provide an answer.}

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Q462. What is the maximum size of a file in S3 ?

Amazon Web Services (AWS)

Ans. 5 TB

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Q463. Difference between S3 bucket and Folder ?

Amazon Web Services (AWS)

Ans. Bucket is the highest level folder whose name should be unique globally.

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Q464. Which AWS service can be used for creating Billing Alarms ?

Amazon Web Services (AWS)

Ans. AWS CloudWatch

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Q465. 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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Q466. 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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Q467. 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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Q468. 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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Q469. 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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Q470. How did you use Spring in your project ? Which Spring annotations have you used in your project ?

Spring

Ans. @RequestMappping

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Q471. 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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Q472. How can we click on hidden element.

Html

Ans.

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Q473. can we write multiple CATCH in webdriver code?

Testing

Ans. A try block can be followed by one or more catch blocks. Each catch block must contain a different exception handler. So, if you have to perform different tasks at the occurrence of different exceptions, use java multi-catch block.

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Q474.

Design

^{This question was recently asked at 'HeadStrong'.This question is still unanswered. Can you please provide an answer.}

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Q475. 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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Q476. what is the difference between RC and webdriver

WebDriver

^{This question was recently asked at 'HCL Technologies'.This question is still unanswered. Can you please provide an answer.}

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Q477. what are the different status of a defect in Jira ?

Jira

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

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Q478. what is the testcase technique

Testing

^{This question was recently asked at 'HCL Technologies'.This question is still unanswered. Can you please provide an answer.}

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Q479. How do we include and exclude the groups in the TestNG xml file?

TestNG

^{This question was recently asked at 'VM Ware'.This question is still unanswered. Can you please provide an answer.}

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Q480. How do we achieve parallel execution in TestNG?

TestNG

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