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Q2761. what is salesforce ?

SalesForce

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

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Q2762. A customer has a website which is accessible over the Internet and he wants to secure the communication and decides to implement HTTPS instead of HTTP. He has configured EC2 instance behind an ELB. Where should you configure the SSL certificate?

Amazon Web Services (AWS)

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Q2763. With regards to VPC, what is the default maximum number of virtual private gateways allowed per region?

Amazon Web Services (AWS)

Ans. 5

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Q2764. 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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Q2765. How many requests per second can Amazon CloudFront handle?

Amazon Web Services (AWS)

Ans. 10000

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Q2766. 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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Q2767. 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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Q2768. What is Queue ?

Data Structure

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Q2769. Explain Spring mvc.

Spring

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Q2770. What is the objective of enabling versioning on a s3 bucket ?

Amazon Web Services (AWS)

Ans. So that it doesn't overwrite the existing file with the same name and maintain versioning of it.

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Q2771. Which IAM policy condition key should be used if you want to check whether the request was sent using SSL?

Amazon Web Services (AWS)

Ans. AWS: secure transport

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Q2772. Which AWS service is a task coordinator and state management service for cloud applications.

Amazon Web Services (AWS)

Ans. Amazon SWF

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Q2773. What are the IP address mechanisms supported by ELB?

Amazon Web Services (AWS)

Ans. IPv4 and IPv6

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Q2774. Which ELB component is responsible for monitoring the Load Balancers?

Amazon Web Services (AWS)

Ans. Controller Service

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Q2775. What is the default limit on number of EC2 instances in each region ?

Amazon Web Services (AWS)

Ans. 20

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Q2776. What is the scale of durability in Amazon S3?

Amazon Web Services (AWS)

Ans. 99.999999999%

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Q2777. 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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Q2778. 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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Q2779. What are the different types of actions in Object Lifecycle Management in Amazon S3?

Amazon Web Services (AWS)

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Q2780. 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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Q2781. What is AWS Snowball?

Amazon Web Services (AWS)

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Q2782. 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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Q2783. How can you handle JavaScript popup using selenium ?

Selenium

Ans. Using javaexecutor

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Q2784. 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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Q2785. How is a WAF different from ip tables ?

Amazon Web Services (AWS)

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Q2786. 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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Q2787. 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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Q2788. What are the different types annotations used in TestNG?

TestNG

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Q2789. How do we achieve parallel execution in TestNG?

TestNG

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Q2790. How do we include and exclude the groups in the TestNG xml file?

TestNG

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