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 Q361. If we have enabled versioning for S3 bucket, Do we need to make all new versions public whenever new versions are uploaded ?Amazon Web Services (AWS)
Ans. Yes, all new versions are private by default even if the original file has been made public.

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   Like         Discuss         Correct / Improve     aws s3  aws storage  amazon cloud storage  amazon s3

 Q362. What is the difference between client side and server side encryption wrt to S3 objects ?Amazon Web Services (AWS)
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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 Q363. Can we make objects public in a bucket which is not public ?Amazon Web Services (AWS)
Ans. No

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 Q364. 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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 Q365. 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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 Q366. What status code is returned upon successful upload in S3 ?Amazon Web Services (AWS)
Ans. 200

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 Q367. 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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 Q368. 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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 Q369. 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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 Q370. 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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 Q371. 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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 Q372. What is the maximum size of a file in S3 ?Amazon Web Services (AWS)
Ans. 5 TB

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 Q373. 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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 Q374. Which AWS service can be used for creating Billing Alarms ?Amazon Web Services (AWS)
Ans. AWS CloudWatch

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 Q375. 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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 Q376. 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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 Q377. 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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   Like         Discuss         Correct / Improve     aws region  aws availability zone  aws edge location  region vs availabillity zone

 Q378. 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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   Like         Discuss         Correct / Improve     Amazon Web Service (AWS)   Google Cloud Platform (GCP)

 Q379. How did you use Spring in your project ? Which Spring annotations have you used in your project ?Spring
Ans. @RequestMappping

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   Like         Discuss         Correct / Improve     spring  spring annotations     Asked in 1 Companies

 Q380. 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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 Q381. How can we switch log4j to print logging on console / file ?Log4j
Ans. By changing ConsoleAppender to a FileAppender and vice versa

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 Q382. How can we click on hidden element.Html
Ans.

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 Q383. 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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   Like         Discuss         Correct / Improve     Selenium     Asked in 1 Companies

 Q384. what is the difference between RC and webdriverWebDriver
 This question was recently asked at 'HCL Technologies'.This question is still unanswered. Can you please provide an answer.


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 Q385. what are the different status of a defect in Jira ?Jira
Ans. Open, In Progress, Reopened, Closed, Resolved

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 Q386. what is the testcase techniqueTesting
 This question was recently asked at 'HCL Technologies'.This question is still unanswered. Can you please provide an answer.


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 Q387. 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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 Q388. How can you handle JavaScript popup using selenium ?Selenium
Ans. Using javaexecutor

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   Like         Discuss         Correct / Improve     Selenium  WebDriver     Asked in 1 Companies

 Q389. How does AWS Lambda handle failure during event processing?Amazon Web Services (AWS)
Ans. In AWS Lambda we can run a function in synchronous or asynchronous mode. In synchronous mode, if AWS Lambda function fails, then it will just give an exception to the calling application. In asynchronous mode, if AWS Lambda function fails then it will retry the same function at least 3 times.If AWS Lambda is running in response to an event in Amazon DynamoDB or Amazon Kinesis, then the event will be retried till the Lambda function succeeds or the data expires. In DynamoDB or Kinesis, AWS maintains data for at least 24 hours.

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   Like         Discuss         Correct / Improve     aws lambda  aws serverless computing  amazon cloud serverless computing  amazon lambda

 Q390. What are the different types of load balancing options provided by Amazon Elastic Load Balancing (ELB)?Amazon Web Services (AWS)
Ans. Application load balancing
Network load balancing
Classic load balancing

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