Interview Question and Answers | Search Coding Interview Questions

Interview Questions and Answers - Order By Newest

Q2961. Difference between composite , primary and unique key ?

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

Help us improve. Please let us know the company, where you were asked this question :

_{Like Discuss Correct / Improve Asked in 1 Companies}

Q2962. Which programming language you hate the most and Why ?

General

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

Help us improve. Please let us know the company, where you were asked this question :

_{Like Discuss Correct / Improve Asked in 1 Companies}

Q2963. How do you manage environment specific configuration for your lambda functions ?

Amazon Web Services (AWS)

Ans. We are using Yaml for initializing configuration and Environment Variables for overriding them.

Help us improve. Please let us know the company, where you were asked this question :

_{Like Discuss Correct / Improve aws lambda aws serverless computing amazon cloud serverless computing amazon lambda}

Q2964. Which is a better way to keep environment specific configuration in AWS Lambda - Environment Variables or external service like S3 or RDS ?

Amazon Web Services (AWS)

Ans. Possible Answer - Env variable or use parameter store

Help us improve. Please let us know the company, where you were asked this question :

_{Like Discuss Correct / Improve aws lambda aws serverless computing amazon cloud serverless computing amazon lambda}

Q2965. Can we load Yaml files into AWS DynamoDB ?

Amazon Web Services (AWS)

Ans. No

Help us improve. Please let us know the company, where you were asked this question :

_{Like Discuss Correct / Improve aws dynamodb aws nosql database amazon cloud nosql database}

Q2966. Can we ssh into subnet without a internet gateway ?

Amazon Web Services (AWS)

Ans. No

Help us improve. Please let us know the company, where you were asked this question :

_{Like Discuss Correct / Improve aws subset aws internet gateway}

Q2967. Can constructors be final ?

Core Java

Ans. No. They are never inherited and therefore are not subject to hiding or overriding.

Help us improve. Please let us know the company, where you were asked this question :

_{Like Discuss Correct / Improve constructor final final constructor Asked in 1 Companies}

Q2968. Can a constructor be declared static ? Why ?

Core Java

Ans. No.

When we declare a method static, it means that "this belongs to class as whole and not particular instance". The whole purpose of constructor is to initialize a object and hence there is no sense having static constructor.

Help us improve. Please let us know the company, where you were asked this question :

_{Like Discuss Correct / Improve constructor static static constructor Asked in 1 Companies}

Q2969. What is AWS Config service ?

Amazon Web Services (AWS)

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

Help us improve. Please let us know the company, where you were asked this question :

_{Like Discuss Correct / Improve}

Q2970. How can we take snapshots and track changes to environment variables in Elastic Beanstalk or Lambda ?

Amazon Web Services (AWS)

Ans. We can use AWS Config

Help us improve. Please let us know the company, where you were asked this question :

_{Like Discuss Correct / Improve aws elastic beanstalk amazon elastic beanstalk aws lambda aws serverless computing amazon cloud serverless computing amazon lambda}

Q2971. If you are asked to develop a financial system, how would you make sure that there are proper checks , balances and audits ?

Solution

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

Help us improve. Please let us know the company, where you were asked this question :

_{Like Discuss Correct / Improve Design Security Asked in 1 Companies}

Q2972. How can you prove your honesty ?

General

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

Help us improve. Please let us know the company, where you were asked this question :

_{Like Discuss Correct / Improve Asked in 1 Companies}

Q2973. Which maven commands you usually work with ?

Maven

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

Help us improve. Please let us know the company, where you were asked this question :

_{Like Discuss Correct / Improve maven Asked in 1 Companies}

Q2974. Design an in memory object oriented system for a Car manufacturing Company ?

Design

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

Help us improve. Please let us know the company, where you were asked this question :

_{Like Discuss Correct / Improve Asked in 1 Companies}

Q2975. Write a method that would solve two problems at the same time ?

Core Java

Ans. We can return value for one problem solving or computation and set the value for other in some member element.

Help us improve. Please let us know the company, where you were asked this question :

_{Like Discuss Correct / Improve}

Q2976. why is "".equals(str); safer than str.equals("")?

Core Java

Ans. str.equals("") this statement will throw NullPointerException if str is null where as "".equals(str) works fine even if str is null

Help us improve. Please let us know the company, where you were asked this question :

_{Like Discuss Correct / Improve equals method Asked in 1 Companies}

Q2977. Can we have a final argument in a method ? What is the use of that if we do so ?

Core Java

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

Help us improve. Please let us know the company, where you were asked this question :

_{Like Discuss Correct / Improve Asked in 1 Companies}

Q2978. What is a difference between JUnit 3 and 4 ?

Junit

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

Help us improve. Please let us know the company, where you were asked this question :

_{Like Discuss Correct / Improve testing junit Asked in 1 Companies}

Q2979. What is the minimum number of tables required to perform a SQL join?

Database

Ans. 1 , We can do self join

Help us improve. Please let us know the company, where you were asked this question :

_{Like Discuss Correct / Improve sql join Asked in 1 Companies}

Q2980. Code an elevator simulator.

Design

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

Help us improve. Please let us know the company, where you were asked this question :

_{Like Discuss Correct / Improve Asked in 1 Companies}

Q2981. Implement a queue, using only stacks

Data Structure

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

Help us improve. Please let us know the company, where you were asked this question :

_{Like Discuss Correct / Improve queue stack Asked in 1 Companies}

Q2982. How would you test a Twitter application ?

Testing

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

Help us improve. Please let us know the company, where you were asked this question :

_{Like Discuss Correct / Improve solution testing Asked in 1 Companies}

Q2983. Write a calculator and find if a character appears more than n times ?

Design

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

Help us improve. Please let us know the company, where you were asked this question :

_{Like Discuss Correct / Improve Asked in 1 Companies}

Q2984. Can we keep application configuration at different places and what could be the consideration for choosing multiple places for doing so ?

Design

Ans. Yes an application can have configuration stored at multiple places. Factors that could facilitate such a design could be

1. Type of config information - We may have a case to store confidential information differently than other regular config value

2. Environment - We may like to have a base config ( defined in application package ) and then a different override mechanism in different environments.

3. Centralization - Sometime some configs need to be shared across application and hence centralized.

4. Testing - Testing against config may not be possible in some enviornments in certain cases and hence additional config store might be kept for testing purpose only.

Help us improve. Please let us know the company, where you were asked this question :

_{Like Discuss Correct / Improve Design Solution}

Q2985. Do you think it's a good practice to keep passwords in config files ?

Solution

Ans. We can keep them in config as encrypted values.

Help us improve. Please let us know the company, where you were asked this question :

_{Like Discuss Correct / Improve}

Q2986. How to write an iterator for an iterator of iterators?

Core Java

Ans. CustomArrayList myarrayList = new CustomArrayList();
      myarrayList.add("Value 1");
      myarrayList.add("Value 2");
      myarrayList.add("Value 3");

      for (String string : myarrayList) {
         System.out.println(string);
      }

package sample.utils;

import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;

public class CustomArrayList implements Iterable {

   private ArrayList mylist = new ArrayList();

   public void add(T t) {
      this.mylist.add(t);
   }

   @Override
   public Iterator iterator() {
      return new CustomIterator(mylist);
   }

   class CustomIterator implements Iterator {

      private int indexPosition = 0;
      private List internalList;

      public CustomIterator(List internalList) {
         this.internalList = internalList;
      }

      @Override
      public boolean hasNext() {
         if (internalList.size() >= indexPosition 1) {
            return true;
         }
         return false;
      }

      @Override
      public E next() {
         E val = internalList.get(indexPosition);
         indexPosition ;
         return val;
      }

   }

}

Help us improve. Please let us know the company, where you were asked this question :

_{Like Discuss Correct / Improve iterator Asked in 1 Companies}

Q2987. What is an identity matrix ?

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

Help us improve. Please let us know the company, where you were asked this question :

_{Like Discuss Correct / Improve Asked in 1 Companies}

Q2988. How does one do matrix multiplication?

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

Help us improve. Please let us know the company, where you were asked this question :

_{Like Discuss Correct / Improve Asked in 1 Companies}

Q2989. What are the disadvantages of binary search trees?

Algorithm

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

Help us improve. Please let us know the company, where you were asked this question :

_{Like Discuss Correct / Improve binary search tree Asked in 1 Companies}

Q2990. Design a appointment booking system for a chain of hospitals.

Design

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

Help us improve. Please let us know the company, where you were asked this question :

_{Like Discuss Correct / Improve Asked in 1 Companies}

Search Interview Questions

Help us and Others Improve. Please let us know the questions asked in any of your previous interview.