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Wissen Technology Interview Questions, Process, and Tips

Updated 2 Mar 2025

Top Wissen Technology Interview Questions and Answers

View all 138 questions

Wissen Technology Interview Experiences

Popular Designations

150 interviews found

Interview experience
5
Excellent
Difficulty level
Easy
Process Duration
Less than 2 weeks
Result
Selected Selected

I applied via Naukri.com and was interviewed in Feb 2023. There were 3 interview rounds.

Round 1 - Resume Shortlist 
Pro Tip by AmbitionBox:
Keep your resume crisp and to the point. A recruiter looks at your resume for an average of 6 seconds, make sure to leave the best impression.
View all tips
Round 2 - One-on-one 

(18 Questions)

  • Q1. 1. Can we keep an object of a Class as key in HashMap?
  • Ans. 

    Yes, we can keep an object of a Class as a key in HashMap.

    • The key in a HashMap can be any non-null object.

    • The key's class must override the hashCode() and equals() methods for proper functioning.

    • If two objects have the same hashCode(), they will be stored in the same bucket and compared using equals().

    • If the key is mutable, its state should not be modified after it is used as a key in the HashMap.

  • Answered by AI
  • Q2. 2. What will happen if hashcode only returns a constant? How will it affect the internal working of the HashMap?
  • Ans. 

    If hashcode returns a constant, all elements will be stored in the same bucket, resulting in poor performance.

    • All elements will be stored in the same bucket of the HashMap.

    • This will lead to poor performance as the HashMap will essentially become a linked list.

    • Retrieving elements will take longer as the HashMap will have to iterate through the linked list to find the desired element.

  • Answered by AI
  • Q3. 3. What if we do not override Equals method ? What is we do not override Hashcode method?
  • Ans. 

    Not overriding equals method can lead to incorrect comparison of objects. Not overriding hashCode method can lead to incorrect behavior in hash-based data structures.

    • If equals method is not overridden, the default implementation from Object class will be used which compares object references.

    • This can lead to incorrect comparison of objects where two different objects with same content are considered unequal.

    • If hashCode...

  • Answered by AI
  • Q4. 4. How to make a class immutable?
  • Ans. 

    To make a class immutable, we need to ensure that its state cannot be modified after creation.

    • Make all fields private and final

    • Do not provide any setters

    • Ensure that mutable objects are not returned from methods

    • Make the class final or use a private constructor

    • Consider using defensive copying

  • Answered by AI
  • Q5. 5. If we have a mutable object inside immutable class then how will you handle it?
  • Ans. 

    To handle a mutable object inside an immutable class, make the object private and provide only read-only access methods.

    • Make the mutable object private to encapsulate it within the immutable class.

    • Provide read-only access methods to retrieve the state of the mutable object.

    • Ensure that the mutable object cannot be modified from outside the class.

    • If necessary, create defensive copies of the mutable object to prevent unin

  • Answered by AI
  • Q6. 6. Advantages and Disadvantages of immutable class?
  • Ans. 

    Immutable classes have advantages like thread safety, security, and simplicity, but also have disadvantages like memory usage and performance overhead.

    • Advantages of immutable classes:

    • - Thread safety: Immutable objects can be safely shared among multiple threads without the need for synchronization.

    • - Security: Immutable objects cannot be modified, which can prevent unauthorized changes to sensitive data.

    • - Simplicity: Im...

  • Answered by AI
  • Q7. How to sort a list of students on the basis of their First name?
  • Ans. 

    To sort a list of students on the basis of their First name, use the Collections.sort() method with a custom Comparator.

    • Create a custom Comparator that compares the first names of the students.

    • Implement the compare() method in the Comparator to compare the first names.

    • Use the Collections.sort() method to sort the list of students using the custom Comparator.

  • Answered by AI
  • Q8. Object level Lock vs Class level lock?
  • Ans. 

    Object level lock is used to synchronize access to an instance method or block, while class level lock is used to synchronize access to a static method or block.

    • Object level lock is acquired on a per-object basis, while class level lock is acquired on a per-class basis.

    • Object level lock is useful when multiple threads are accessing the same instance method or block, while class level lock is useful when multiple thread...

  • Answered by AI
  • Q9. If there is a class inside it we have a method - public void synchronized M1() - inside method - Thread.Sleep(500); We create 2 different object of the class and invoke the method. Ob1.M1() Ob2.M1() How ...
  • Q10. Using Java 8 find the sum of squares of all the odd numbers in the arraylist.
  • Ans. 

    Using Java 8, find the sum of squares of all the odd numbers in the arraylist.

    • Use the stream() method to convert the ArrayList to a stream

    • Use the filter() method to filter out the even numbers

    • Use the mapToInt() method to square each odd number

    • Use the sum() method to find the sum of the squared odd numbers

  • Answered by AI
  • Q11. LeetCode 1 - Two Sum.
  • Q12. LeetCode 20 - Valid Parantheses
  • Q13. Parent class has run() and walk() . Parent run() - calls walk() Child Class overrides Parent class Inside run() - calls super.run() Walk() - calls super.walk In main class Parent p = new child() p.ru...
  • Ans. 

    The order of execution will be: parent's run() -> child's run() -> parent's walk()

    • When p.run() is called, it will first execute the run() method of the parent class

    • Inside the parent's run() method, it will call the walk() method of the parent class

    • Since the child class overrides the parent class, the child's run() method will be executed next

    • Inside the child's run() method, it will call the run() method of the parent c...

  • Answered by AI
  • Q14. LeetCode - 532 , K diff pairs
  • Q15. What is Serialization?
  • Ans. 

    Serialization is the process of converting an object into a stream of bytes to store or transmit it over a network.

    • Serialization is used to save the state of an object and recreate it later.

    • It is also used to send objects over a network as a byte stream.

    • Java provides Serializable interface to implement serialization.

    • Serialization can be used for deep cloning of objects.

    • Example: Saving an object to a file or sending it

  • Answered by AI
  • Q16. Synchronized Map vs Concurrent hashmap
  • Ans. 

    Synchronized Map is thread-safe but slower, while Concurrent HashMap is faster but not entirely thread-safe.

    • Synchronized Map locks the entire map during write operations, causing other threads to wait.

    • Concurrent HashMap allows multiple threads to read and write simultaneously, using a lock-free approach.

    • Synchronized Map is useful for small maps or low-concurrency scenarios.

    • Concurrent HashMap is better suited for large ...

  • Answered by AI
  • Q17. Write a query to find name of authors who have written more than 10 books. Table - Bookauthhor Column - Book Column - Author
  • Ans. 

    Query to find authors who have written more than 10 books

    • Use the GROUP BY clause to group the records by author

    • Use the HAVING clause to filter the groups with a count greater than 10

    • Join the Bookauthor table with the Author table to get the author names

  • Answered by AI
  • Q18. Write a program to return the length of the longest word from a string whose length is even?
  • Ans. 

    This program returns the length of the longest word from a string whose length is even.

    • Split the string into an array of words using a space as the delimiter.

    • Iterate through the array and check if the length of each word is even.

    • Keep track of the length of the longest even word encountered.

    • Return the length of the longest even word.

  • Answered by AI
Round 3 - HR 

(3 Questions)

  • Q1. How much salary expectations?
  • Ans. 

    Answer the salary expectations question in an interview for a Java Developer position.

    • Research the average salary range for Java Developers in your location and level of experience.

    • Consider your qualifications, skills, and experience when determining your salary expectations.

    • Be realistic and flexible in your salary expectations, taking into account the company's budget and industry standards.

    • Provide a salary range rath...

  • Answered by AI
  • Q2. Do you have location constraints?
  • Ans. 

    No location constraints.

    • I am open to working in any location.

    • I am willing to relocate if required.

    • I do not have any personal or family commitments that tie me to a specific location.

  • Answered by AI
  • Q3. Why are you leaving this company?
  • Ans. 

    Seeking new challenges and growth opportunities.

    • Looking for a company that aligns better with my career goals.

    • Seeking a more collaborative and innovative work environment.

    • Desire to work on larger and more complex projects.

    • Want to expand my skill set and learn new technologies.

    • Seeking better work-life balance.

    • Company restructuring or downsizing.

    • Limited career advancement opportunities in current company.

  • Answered by AI

Interview Preparation Tips

Topics to prepare for Wissen Technology Java Developer interview:
  • DSA
  • Core Java
  • Java 8
  • Hashmap
  • Multithreading
  • OOPS
  • Synchronisation
  • Serialization
Interview preparation tips for other job seekers - Majorly questions are repetitive.
So focus on Core Java and Multi threading.
Java 8.

Practice easy and medium level questions from leetcode

Skills evaluated in this interview

Top Wissen Technology Java Developer Interview Questions and Answers

Q1. Parent class has run() and walk() . Parent run() - calls walk() Child Class overrides Parent class Inside run() - calls super.run() Walk() - calls super.walk In main class Parent p = new child() p.run() What will be the order of execution?
View answer (5)

Java Developer Interview Questions asked at other Companies

Q1. Sort 0 and 1 Problem Statement Given an integer array ARR of size N containing only integers 0 and 1, implement a function to sort this array. The solution should scan the array only once without using any additional arrays. Input: The firs... read more
View answer (3)
Interview experience
3
Average
Difficulty level
Moderate
Process Duration
Less than 2 weeks
Result
No response

I was interviewed in Dec 2024.

Round 1 - Technical 

(6 Questions)

  • Q1. Implement a custom stack that allows fetching the minimum element in constant time, O(1).
  • Ans. 

    Custom stack with constant time access to minimum element

    • Use two stacks - one to store elements and another to store minimum values

    • When pushing an element, compare with top of min stack and push the smaller value

    • When popping an element, pop from both stacks

    • Access minimum element in O(1) time by peeking at top of min stack

  • Answered by AI
  • Q2. How can one create an immutable class named Employee with fields for name and hobbies defined as List?
  • Ans. 

    To create an immutable class named Employee with fields for name and hobbies defined as List<String>, use private final fields and return new instances in getters.

    • Use private final fields for name and hobbies in the Employee class

    • Provide a constructor to initialize the fields

    • Return new instances or unmodifiable lists in the getters to ensure immutability

  • Answered by AI
  • Q3. What changes are required in the Employee class to use it as a key for a HashMap?
  • Ans. 

    Add hashCode() and equals() methods to Employee class.

    • Override hashCode() method to generate a unique hash code for each Employee object.

    • Override equals() method to compare Employee objects based on their attributes.

    • Ensure that the attributes used in hashCode() and equals() methods are immutable.

    • Example: Add id, name, and department attributes to Employee class and override hashCode() and equals() methods based on thes

  • Answered by AI
  • Q4. What is the implementation of the singleton design pattern?
  • Ans. 

    Singleton design pattern ensures a class has only one instance and provides a global point of access to it.

    • Create a private static instance of the class within the class itself.

    • Provide a public static method to access the instance, creating it if necessary.

    • Ensure the constructor of the class is private to prevent instantiation from outside the class.

    • Use lazy initialization to create the instance only when needed.

    • Thread...

  • Answered by AI
  • Q5. Different ways to create a thread
  • Ans. 

    Ways to create a thread in Java include extending the Thread class, implementing the Runnable interface, and using Java 8's lambda expressions.

    • Extend the Thread class and override the run() method

    • Implement the Runnable interface and pass it to a Thread object

    • Use Java 8's lambda expressions with the Executor framework

  • Answered by AI
  • Q6. What are the SOLID principles in software design, and can you provide examples for each?
  • Ans. 

    SOLID principles are a set of five design principles in object-oriented programming to make software more maintainable, flexible, and scalable.

    • Single Responsibility Principle (SRP) - A class should have only one reason to change. Example: A class that handles user authentication should not also handle database operations.

    • Open/Closed Principle (OCP) - Software entities should be open for extension but closed for modific...

  • Answered by AI
Round 2 - Technical 

(5 Questions)

  • Q1. What is the concept of Object-Oriented Programming (OOP) and can you provide an example?
  • Ans. 

    OOP is a programming paradigm based on the concept of objects, which can contain data in the form of fields and code in the form of procedures.

    • OOP focuses on creating objects that interact with each other to solve a problem.

    • Encapsulation is a key concept in OOP, where data is kept within an object and only accessible through its methods.

    • Inheritance allows objects to inherit attributes and methods from parent classes.

    • Po...

  • Answered by AI
  • Q2. How do threads communicate with each other in Java?
  • Ans. 

    Threads communicate in Java through shared memory or message passing.

    • Threads can communicate through shared variables in memory.

    • Threads can communicate through synchronized methods or blocks.

    • Threads can communicate through wait(), notify(), and notifyAll() methods.

    • Threads can communicate through message passing using classes like BlockingQueue or ExecutorService.

  • Answered by AI
  • Q3. Write a program to reverse a linked list.
  • Ans. 

    Program to reverse a linked list

    • Create a new linked list to store the reversed elements

    • Traverse the original linked list and insert each node at the beginning of the new list

    • Update the head of the new list as the last node of the original list

  • Answered by AI
  • Q4. What is the difference between string literals and the string pool?
  • Ans. 

    String literals are constant strings defined in code, while the string pool is a memory area where unique string objects are stored.

    • String literals are created using double quotes, while string pool objects are created using the 'new' keyword.

    • String literals are stored in the string pool to conserve memory and improve performance.

    • String literals are automatically interned by the JVM, while string pool objects need to b

  • Answered by AI
  • Q5. What is the program to print the 90-degree rotated view of a 2D array?
  • Ans. 

    Program to print the 90-degree rotated view of a 2D array.

    • Iterate through each column in reverse order and print the corresponding row elements.

    • Repeat this process for all columns to get the rotated view of the 2D array.

  • Answered by AI

Interview Preparation Tips

Interview preparation tips for other job seekers - Concentrate on the fundamental aspects of Java and Spring Boot.

Top Wissen Technology Java Developer Interview Questions and Answers

Q1. Parent class has run() and walk() . Parent run() - calls walk() Child Class overrides Parent class Inside run() - calls super.run() Walk() - calls super.walk In main class Parent p = new child() p.run() What will be the order of execution?
View answer (5)

Java Developer Interview Questions asked at other Companies

Q1. Sort 0 and 1 Problem Statement Given an integer array ARR of size N containing only integers 0 and 1, implement a function to sort this array. The solution should scan the array only once without using any additional arrays. Input: The firs... read more
View answer (3)

Java Developer Interview Questions & Answers

user image AKSHAY SANJAY ZOTING

posted on 17 Jan 2025

Interview experience
4
Good
Difficulty level
Moderate
Process Duration
Less than 2 weeks
Result
Not Selected

I applied via Walk-in and was interviewed in Dec 2024. There were 2 interview rounds.

Round 1 - Coding Test 

The assessment consists of basic coding and SQL-related questions, including two challenge questions. The total test duration is 1 hour and 30 minutes, featuring a total of 7 questions, with a passing score of 50% out of 120 points.

Round 2 - Technical 

(4 Questions)

  • Q1. Can you provide an introduction about yourself, including your current place of residence?
  • Ans. 

    I am a Java Developer currently residing in New York City.

    • Experienced Java Developer

    • Residing in New York City

    • Strong knowledge of Java programming language

  • Answered by AI
  • Q2. What is a HashMap in Java, and how does it function internally?
  • Ans. 

    HashMap in Java is a data structure that stores key-value pairs and uses hashing to efficiently retrieve values.

    • HashMap is part of the Java Collections framework.

    • It allows null keys and values.

    • Internally, it uses an array of linked lists to handle collisions.

    • The key's hash code is used to determine the index in the array where the key-value pair is stored.

    • Example: HashMap<String, Integer> map = new HashMap<>...

  • Answered by AI
  • Q3. I was asked to solve a question related to a 2D array that involved iterating through the array and storing the elements in a new array.
  • Q4. Find second highest salary from employee table?
  • Ans. 

    Query to find the second highest salary from employee table.

    • Use SQL query with ORDER BY and LIMIT to get the second highest salary.

    • Example: SELECT DISTINCT salary FROM employee ORDER BY salary DESC LIMIT 1, 1;

  • Answered by AI

Interview Preparation Tips

Interview preparation tips for other job seekers - Practice coding questions and interview questions from Ambition before attending your technical interview.

Top Wissen Technology Java Developer Interview Questions and Answers

Q1. Parent class has run() and walk() . Parent run() - calls walk() Child Class overrides Parent class Inside run() - calls super.run() Walk() - calls super.walk In main class Parent p = new child() p.run() What will be the order of execution?
View answer (5)

Java Developer Interview Questions asked at other Companies

Q1. Sort 0 and 1 Problem Statement Given an integer array ARR of size N containing only integers 0 and 1, implement a function to sort this array. The solution should scan the array only once without using any additional arrays. Input: The firs... read more
View answer (3)
Interview experience
5
Excellent
Difficulty level
Hard
Process Duration
2-4 weeks
Result
Selected Selected

I was interviewed in Feb 2025.

Round 1 - Technical 

(2 Questions)

  • Q1. Tell me about your overall experience in Recruitment
  • Ans. 

    I have over 8 years of experience in recruitment across various industries and roles.

    • Managed end-to-end recruitment process including sourcing, screening, interviewing, and onboarding.

    • Utilized various recruitment tools and platforms to attract top talent.

    • Developed and maintained strong relationships with hiring managers and candidates.

    • Implemented recruitment strategies to improve time-to-fill and quality of hires.

    • Condu...

  • Answered by AI
  • Q2. Highlight the job boards that you have used
  • Ans. 

    I have utilized job boards such as Indeed, LinkedIn, Glassdoor, and Monster.

    • Indeed

    • LinkedIn

    • Glassdoor

    • Monster

  • Answered by AI
Round 2 - One-on-one 

(1 Question)

  • Q1. Analytical question
Round 3 - HR 

(1 Question)

  • Q1. Salary negotiation and discussion

Wissen Technology interview questions for popular designations

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 (17)

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 (5)

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 (4)

 Trainee Analyst

 (2)

Interview experience
4
Good
Difficulty level
Moderate
Process Duration
Less than 2 weeks
Result
Not Selected

I applied via LinkedIn and was interviewed in Dec 2024. There were 2 interview rounds.

Round 1 - Technical 

(2 Questions)

  • Q1. OOPS concepts, SOLID principles, design patterns Thread vs Task
  • Q2. C# coding questions and SQL questions
Round 2 - Technical 

(2 Questions)

  • Q1. Second round was technical + managerial round
  • Q2. Asked some scenario based questions in sql and .NET

DOT NET Developer Interview Questions asked at other Companies

Q1. What is the difference between windows application development and web based development?
View answer (11)

Get interview-ready with Top Wissen Technology Interview Questions

Java Developer Interview Questions & Answers

user image Bharat Burle

posted on 27 Dec 2024

Interview experience
5
Excellent
Difficulty level
Hard
Process Duration
Less than 2 weeks
Result
Not Selected

I applied via Company Website and was interviewed in Nov 2024. There were 2 interview rounds.

Round 1 - Coding Test 

There were 3 to 4 questions related to the camera that needed to be solved within the given time.

Round 2 - One-on-one 

(4 Questions)

  • Q1. Postmortem of Hashmap
  • Ans. 

    Hashmap postmortem involves analyzing performance, memory usage, collisions, and resizing.

    • Analyze performance: Check for time complexity of operations like get, put, and remove.

    • Memory usage: Evaluate memory footprint and potential memory leaks.

    • Collisions: Investigate collision resolution strategies like separate chaining or open addressing.

    • Resizing: Examine load factor and rehashing process for efficient resizing.

    • Examp...

  • Answered by AI
  • Q2. Locking mechanism in multithreading
  • Ans. 

    Locking mechanism in multithreading is used to control access to shared resources by multiple threads.

    • Locks are used to prevent multiple threads from accessing shared resources simultaneously

    • Types of locks include synchronized blocks, ReentrantLock, and ReadWriteLock

    • Locks help prevent race conditions and ensure data consistency in multithreaded applications

  • Answered by AI
  • Q3. Find highest salaried emp from each dept
  • Ans. 

    Use SQL query to group by department and find employee with highest salary in each department

    • Write a SQL query to group by department and select max salary for each department

    • Join the result with employee table to get employee details

    • Example: SELECT dept, emp_name, MAX(salary) FROM employees GROUP BY dept

  • Answered by AI
  • Q4. Sorting algorithms

Interview Preparation Tips

Topics to prepare for Wissen Technology Java Developer interview:
  • Java fundamentals
  • DS
  • Multithreading
  • SQL

Top Wissen Technology Java Developer Interview Questions and Answers

Q1. Parent class has run() and walk() . Parent run() - calls walk() Child Class overrides Parent class Inside run() - calls super.run() Walk() - calls super.walk In main class Parent p = new child() p.run() What will be the order of execution?
View answer (5)

Java Developer Interview Questions asked at other Companies

Q1. Sort 0 and 1 Problem Statement Given an integer array ARR of size N containing only integers 0 and 1, implement a function to sort this array. The solution should scan the array only once without using any additional arrays. Input: The firs... read more
View answer (3)

Jobs at Wissen Technology

View all
Interview experience
1
Bad
Difficulty level
Hard
Process Duration
Less than 2 weeks
Result
No response

I applied via Approached by Company

Round 1 - Technical 

(2 Questions)

  • Q1. Design classes, and interfaces for Card(taash ke patte) games. Numbers from A, 2, 3, ..., symbol of 10,11... was given.
  • Q2. Streams - flat map

Interview Preparation Tips

Topics to prepare for Wissen Technology Senior Engineer interview:
  • Streams
  • Low level design
  • Array problems

Senior Engineer Interview Questions asked at other Companies

Q1. what is the meaning of M in M20,M25,M30 grade of concrete?
View answer (57)
Interview experience
2
Poor
Difficulty level
Moderate
Process Duration
Less than 2 weeks
Result
Not Selected

I was interviewed in Nov 2024.

Round 1 - Coding Test 

Coding test was easy. They asked LC easy anyone with fair understanding of programming can easily solve it.

Round 2 - One-on-one 

(2 Questions)

  • Q1. Asked a question from Blind 75 that i dont remember as of now. I kind of stumbled here yet gave a code for original question
  • Q2. Asked LC hard question. Interviewer was very rude and did not give a shit about my approach when I tried to explain it to him/her. He said just run code against test cases provided. I received rejection ...

Interview Preparation Tips

Interview preparation tips for other job seekers - HRs were very professional and polite but not the interviewer.

Top Wissen Technology Software Engineer Interview Questions and Answers

Q1. How to use custom object as a key in HashMap?
View answer (1)

Software Engineer Interview Questions asked at other Companies

Q1. Bridge and torch problem : Four people come to a river in the night. There is a narrow bridge, but it can only hold two people at a time. They have one torch and, because it's night, the torch has to be used when crossing the bridge. Person... read more
View answer (197)
Interview experience
3
Average
Difficulty level
Easy
Process Duration
-
Result
Not Selected

I applied via Naukri.com and was interviewed in Dec 2024. There was 1 interview round.

Round 1 - One-on-one 

(2 Questions)

  • Q1. Convert given Object array into integer list provided object array may contain array of objects
  • Q2. Merge given sorted arrays into single sorted array
  • Ans. 

    Merge sorted arrays into single sorted array

    • Use a merge sort algorithm to combine the arrays

    • Iterate through both arrays and compare elements to merge them

    • Time complexity can be O(n log n) if using merge sort

  • Answered by AI

Top Wissen Technology Software Engineer Interview Questions and Answers

Q1. How to use custom object as a key in HashMap?
View answer (1)

Software Engineer Interview Questions asked at other Companies

Q1. Bridge and torch problem : Four people come to a river in the night. There is a narrow bridge, but it can only hold two people at a time. They have one torch and, because it's night, the torch has to be used when crossing the bridge. Person... read more
View answer (197)
Interview experience
5
Excellent
Difficulty level
-
Process Duration
-
Result
-
Round 1 - Coding Test 

Hackearth online coding test for 1 hour

Round 2 - Technical 

(2 Questions)

  • Q1. Dsa question and output questions
  • Q2. Find k largest element in an array
  • Ans. 

    Use sorting or heap data structure to find k largest elements in an array of strings.

    • Sort the array in descending order and return the first k elements.

    • Use a max heap data structure to efficiently find the k largest elements.

    • Examples: ['apple', 'banana', 'orange', 'kiwi'], k=2 -> ['orange', 'kiwi']

  • Answered by AI
Round 3 - Technical 

(2 Questions)

  • Q1. Remove duplicates from array
  • Ans. 

    Remove duplicates from array of strings

    • Create a Set to store unique strings

    • Iterate through the array and add each string to the Set

    • Convert the Set back to an array to get the unique strings

  • Answered by AI
  • Q2. Output related questions on student class object

Interview Preparation Tips

Interview preparation tips for other job seekers - Prepare dsa well

Skills evaluated in this interview

Top Wissen Technology Software Developer Interview Questions and Answers

Q1. design a deck of card and tell who is the higher bidder
View answer (1)

Software Developer Interview Questions asked at other Companies

Q1. Maximum Subarray Sum Problem Statement Given an array of integers, determine the maximum possible sum of any contiguous subarray within the array. Example: Input: array = [34, -50, 42, 14, -5, 86] Output: 137 Explanation: The maximum sum is... read more
View answer (42)
Interview experience
4
Good
Difficulty level
-
Process Duration
-
Result
-

I applied via Campus Placement

Round 1 - Coding Test 

Test Duration : 90 mins
Platform : Hackerearth
Number of Questions : 10 ( 5 MCQs + 3 Coding questions + 2 SQL Questions)
Questions were of Easy to Medium Level

Round 2 - Technical 

(4 Questions)

  • Q1. Explain your Projects in brief with their functionality and Technology Stack ?
  • Ans. 

    Developed a web application for project management using React, Node.js, and MongoDB.

    • Created a user-friendly interface for project tracking and collaboration

    • Implemented authentication and authorization features for secure access

    • Utilized React for front-end development, Node.js for back-end, and MongoDB for database management

  • Answered by AI
  • Q2. Cycle Detection in Linked List and another question on one of its variation.
  • Q3. Few Questions on Joins, Normalization and SQL were asked.
  • Q4. Few Questions on Java, Object Oriented Programming and 3-4 Output based questions were also asked.

Interview Preparation Tips

Interview preparation tips for other job seekers - Prepare Core Computer Science Subjects like DBMS, OOPS and OS well. Apart from that be ready for questions to be asked from your projects.

Trainee Analyst Interview Questions asked at other Companies

Q1. Minimum Stops for Ninja's Journey Problem Statement Ninja wishes to travel from his house to a destination X miles away. He knows there are Y gas stations along the way, each station i located at a distance d[i] from the house with g[i] lit... read more
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Wissen Technology Interview FAQs

How many rounds are there in Wissen Technology interview?
Wissen Technology interview process usually has 2-3 rounds. The most common rounds in the Wissen Technology interview process are Technical, Coding Test and Resume Shortlist.
How to prepare for Wissen Technology interview?
Go through your CV in detail and study all the technologies mentioned in your CV. Prepare at least two technologies or languages in depth if you are appearing for a technical interview at Wissen Technology. The most common topics and skills that interviewers at Wissen Technology expect are Java, Telecom, Consulting, SQL and Business Intelligence.
What are the top questions asked in Wissen Technology interview?

Some of the top questions asked at the Wissen Technology interview -

  1. Parent class has run() and walk() . Parent run() - calls walk() Child Class ov...read more
  2. 2. What will happen if hashcode only returns a constant? How will it affect the...read more
  3. How to sort a list of students on the basis of their First na...read more
How long is the Wissen Technology interview process?

The duration of Wissen Technology interview process can vary, but typically it takes about less than 2 weeks to complete.

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Wissen Technology Interview Process

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Wissen Technology Reviews and Ratings

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