Interview Questions and Answers for 'L' | Search Interview Question

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Q1721. How to calculate distance between 2 points using latitude longitude ?

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Q1722. Why did you apply for this position?

General

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Q1723. Explain different inheritance mapping strategies with JPA / Hibernate.

Hibernate

Ans. table per hierarchy
table per concrete class
table per sub class

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Q1724. what is salesforce ?

SalesForce

Ans. Salesforce is the cloud based #1 CRM (Customer Relationship Management)

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Q1725. What is elasticity in relation to Cloud infrastructure ?

Cloud Computing

Ans. The power to scale computing resources up and down easily with minimal friction

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Q1726. How many requests per second can Amazon CloudFront handle?

Amazon Web Services (AWS)

Ans. 10000

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Q1727. Which is the best approach that provides the lowest cost for Amazon elastic block store snapshots while giving you the ability to fully restore data?

aws ebs

Ans. Maintain the most current snapshot; archive the original and increment to Amazon Glacier.

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Q1728. Pascal Triangle Program

Ans. package snippet;

import java.util.ArrayList;
import java.util.Arrays;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

public class Pascal {
   public static void main(String[] args) {

      System.out.println(generatePascalTriangle(5));

   }

   static Map> generatePascalTriangle(int size) {
      Map> triangle = new HashMap<>();

      triangle.put(0, Arrays.asList(1));
      triangle.put(1, Arrays.asList(1, 1));

      for (int i = 2; i <= size; i ) {
         List coeffListForI = new ArrayList<>();
         List coeffListForI_1 = triangle.get(i - 1);
         coeffListForI.add(1);
         for (int j = 0; j <= coeffListForI_1.size() - 2; j ) {
            coeffListForI.add(coeffListForI_1.get(j) coeffListForI_1.get(j 1));
         }
         coeffListForI.add(1);
         triangle.put(i, coeffListForI);
      }

      return triangle;
   }
}

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Q1729. What are the IP address mechanisms supported by ELB?

Amazon Web Services (AWS)

Ans. IPv4 and IPv6

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Q1730. Which ELB component is responsible for monitoring the Load Balancers?

Amazon Web Services (AWS)

Ans. Controller Service

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Q1731. What is the default limit on number of EC2 instances in each region ?

Amazon Web Services (AWS)

Ans. 20

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Q1732. What is the scale of durability in Amazon S3?

Amazon Web Services (AWS)

Ans. 99.999999999%

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Q1733. How will you upload a file greater than 100 megabytes in Amazon S3?

Amazon Web Services (AWS)

Ans. AWS now allows file upto 5GB in S3

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Q1734. Can we do Cross Region replication in Amazon S3 without enabling versioning on a bucket?

Amazon Web Services (AWS)

Ans. Yes

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Q1735. What are the different types of actions in Object Lifecycle Management in Amazon S3?

Amazon Web Services (AWS)

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Q1736. What is Geo Targeting in Amazon CloudFront?

Amazon Web Services (AWS)

Ans. Geo Targeting will the users country of origin and pass along with country code to you in the cloudFront viewer country header.

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Q1737. 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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Q1738. How can you handle JavaScript popup using selenium ?

Selenium

Ans. Using javaexecutor

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Q1739. 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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Q1740. what is the testcase technique

Testing

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Q1741. what are the different status of a defect in Jira ?

Jira

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

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Q1742. what is the difference between RC and webdriver

WebDriver

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Q1743. 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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Q1744. How can we click on hidden element.

Html

Ans.

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Q1745. 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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Q1746. How did you use Spring in your project ? Which Spring annotations have you used in your project ?

Spring

Ans. @RequestMappping

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Q1747. 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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Q1748. Which AWS service can be used for creating Billing Alarms ?

Amazon Web Services (AWS)

Ans. AWS CloudWatch

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Q1749. 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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Q1750. What is the maximum size of a file in S3 ?

Amazon Web Services (AWS)

Ans. 5 TB

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