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Cumulus systems



Link: https://www.cumulus-systems.com/
   




Interview Questions and Answers for 'Cumulus Systems' - 9 question(s) found - Order By Newest

Very frequently asked. Among first few questions in almost all interviews. Among Top 5 frequently asked questions. Frequently asked in Indian service companies (HCL,TCS,Infosys,Capgemini etc based on multiple feedback )
  Q1. Difference between == and .equals() ?Core Java
Anonymous
Ans. "equals" is the method of object class which is supposed to be overridden to check object equality, whereas "==" operator evaluate to see if the object handlers on the left and right are pointing to the same object in memory.

x.equals(y) means the references x and y are holding objects that are equal. x==y means that the references x and y have same object.

Sample code:

String x = new String("str");
String y = new String("str");

System.out.println(x == y); // prints false
System.out.println(x.equals(y)); // prints true

  Sample Code for equals

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Very frequently asked. Favorite question in Walk in Drive of many Indian service companies.
  Q2. Difference between TreeMap and HashMap ?Core Java
Anonymous
Ans. They are different the way their elements are stored in memory. TreeMap stores the Keys in order whereas HashMap stores the key value pairs randomly.

  Sample Code for treemap

  Sample Code for hashmap

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   Like      Discuss      Correct / Improve     java   collections   map   treemap   hashmap     Amber Road  CTS (Cognizant)  ION Trading  DataMetica  Accenture  The Advisory Board Company  BidGely  Infosys  Tata Consultancy (TCS)  HCL Technologies  Wipro  Booking.com  MakeMyTrip  Garena Online  Garmin  ION Trading  Accuity  Palantir Technologies  Books International  Wealthfront  Marin Software  Garmin  IBM  Global Logic  Fiserv  Cumulus Systems  CCTS  UST Global  Cumulus Systems   Apcolite      basic        frequent

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Frequently asked to fresh graduates and less experienced developers.
 Q3. Explain multithreading in Java ?Core Java
Anonymous
Ans. 1. Multithreading provides better interaction with the user by distribution of task

2. Threads in Java appear to run concurrently, so it provides simulation for simultaneous activities.The processor runs each thread for a short time and switches among the threads to simulate sim-ultaneous execution (context-switching) and it make appears that each thread has its own processor.By using this feature, users can make it appear as if multiple tasks are occurring simultaneously when, in fact, each is running for only a brief time before the context is switched to the next thread.

3. We can do other things while waiting for slow I/O operations.In the java.iopackage, the class InputStreamhas a method, read(), that blocks until a byte is read from the stream or until an IOExceptionis thrown. The thread that executes this method cannot do anything elsewhile awaiting the arrival of another byte on the stream.

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   Like      Discuss      Correct / Improve     java   threads   multi threading  concurrency   multithreading     Hamsini ECommerce   Cognizant (CTS)  Cumulus Systems  Cognizant (CTS)      intermediate        frequent

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Frequently asked in Tech Mahindra ( Based on 3 inputs )
  Q4. What is the difference between List, Set and Map ?Core Java
Anonymous
Ans. List - Members are stored in sequence in memory and can be accessed through index.
Set - There is no relevance of sequence and index. Sets doesn't contain duplicates whereas multiset can have duplicates.
Map - Contains Key , Value pairs.

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Very frequently asked.Usually among first few questions.
  Q5. What is MVC ? Design
Anonymous
Ans. MVC is a Design Pattern that facilititates loose coupling by segregating responsibilities in a Web application

1. Controller receives the requests and handles overall control of the request
2. Model holds majority of the Business logic, and
3. View comprise of the view objects and GUI component

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Frequently asked to fresh graduates.
  Q6. What is a Deadlock ?Operating System
Anonymous
Ans. When two threads are waiting each other and cant precede the program is said to be deadlock.

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 Q7. What is JVM ?Core Java2017-04-07 10:16:18

Ans. JVM (Java Virtual Machine) is an abstract machine. It is a specification that provides runtime environment in which java bytecode can be executed.JVMs are available for many hardware and software platforms (i.e. JVM is platform dependent).Runtime Instance Whenever you write java command on the command prompt to run the java class, an instance of JVM is createdThe JVM performs following operation:Loads codeVerifies codeExecutes codeProvides runtime environment

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   Like      Discuss      Correct / Improve     memory management  jvm     ABS  Trimax IT Infrastructure & Services  Cumulus Systems      basic        frequent


 Q8. Why do you want to leave your current job ?General2018-05-11 07:39:41

Ans. The most effective and acceptable reasons for leaving your current job should be positive e.g. moving forward in your life or career

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

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 Q9. What methodology and technology stack do you use ?General2018-05-22 06:05:55

Ans. [Open Ended Answer]

Possible Answer - We are using Agile. We have daily standups, Bi weekly Backlog Grooming , Planning and Retrospective, We have a 2 week sprint and We use Jira for Scrum Management. We are using Java 8, Spring Boot, JSF , Apache Kafka , Soap as well as Rest Services.

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

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Cumulus systems: Interview wasnt easy as I wasnt much ... Anonymous

Cumulus systems: They asked me to write program for ... Vijay

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