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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
4
Good
Difficulty level
Moderate
Process Duration
Less than 2 weeks
Result
No response

I applied via Walk-in and was interviewed in Jul 2023. There were 4 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 - Coding Test 

There is a hacker rank test for 60 minutes Link provided by the time of 1st round live screen share with hr taking screenshot for govt id proof.
Test has a 8 question in that 5 are mcqs and 2 are coding and 1 is SQL query.

Round 3 - One-on-one 

(1 Question)

  • Q1. F2F interview was there. Basic of Multithreading in java. Split array into chunks of given size. Class level and Object level synchronization. Given a nested array and make it into flatten array. {{1}, 2...
  • Ans. You can find all answers here -----
  • Answered Anonymously
Round 4 - One-on-one 

(8 Questions)

  • Q1. After this we have a 3rd F2F round- What is Multithreading in java?
  • Q2. Convert String camel case to snake case.
  • Ans. 

    Converts a camel case string to snake case.

    • Split the string by uppercase letters

    • Convert each word to lowercase

    • Join the words with underscores

  • Answered by AI
  • Q3. Write a Java program using multithreading to print below output: n=10 Thread-1 : 1 Thread-2 : 2 Thread-3 : 3 Thread-1 : 4 Thread-2 : 6 . . Thread-1 : 10
  • Ans. 

    A Java program using multithreading to print numbers from 1 to 10 in a specific pattern.

    • Create three threads and assign them to print numbers in a specific pattern

    • Use synchronization to ensure the correct order of printing

    • Use a loop to iterate from 1 to 10 and assign the numbers to the threads

    • Print the thread name and the assigned number in the desired format

  • Answered by AI
  • Q4. Suggestion on best way for Java collection to store csv data. and if needed any operation on how to do? there are millions of data need to store in java collection. and some validations on this.
  • Q5. How to detect a loop into LinkedList?
  • Ans. 

    To detect a loop in a LinkedList, we can use the Floyd's cycle-finding algorithm.

    • Initialize two pointers, slow and fast, both pointing to the head of the LinkedList.

    • Move slow pointer by one step and fast pointer by two steps at a time.

    • If there is a loop, the slow and fast pointers will eventually meet.

    • If either of the pointers reaches the end of the LinkedList, there is no loop.

  • Answered by AI
  • Q6. Difference between Callable and Runnable Class?
  • Ans. 

    Callable and Runnable are interfaces in Java used for concurrent programming. Callable returns a result and can throw an exception, while Runnable does not return a result or throw an exception.

    • Callable is a generic interface with a method called 'call()', while Runnable is a functional interface with a method called 'run()'.

    • Callable can return a result using the 'Future' interface, while Runnable cannot.

    • Callable can t...

  • Answered by AI
  • Q7. How to create Thread in Java and What are the ways?
  • Ans. 

    Threads in Java allow concurrent execution of multiple tasks. They can be created in multiple ways.

    • Using the Thread class

    • Implementing the Runnable interface

    • Using the Executor framework

    • Using the Callable interface with ExecutorService

  • Answered by AI
  • Q8. Write a SQL Query for having student table Name Subjects Marks Data like- abc Eng 19 abc Phy 17 abc Chem 20 xyz Eng 16 xyz Phy 18 xyz Chem 12 ..... output should be like a list display at the marks board ...

Interview Preparation Tips

Topics to prepare for Wissen Technology Java Developer interview:
  • Java Collections
  • Core Java
  • HashMap
  • Synchronization
  • Logic
  • Java Array
Interview preparation tips for other job seekers - Should have strong knowledge of multithreading and Java Collections.

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
5
Excellent
Difficulty level
-
Process Duration
-
Result
-
Round 1 - Coding Test 

Reverse a linked list.

Senior Principal Engineer Interview Questions asked at other Companies

Q1. What is api tetsing How to validate response What is difference between put patch post How to do data driven in postman How can we use response data from one request to another request Rest api architecture Difference between rest api and S... read more
View answer (1)
Interview experience
3
Average
Difficulty level
-
Process Duration
-
Result
-
Round 1 - Coding Test 

Had given 2 java question which one is medium and other one was easy.

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
5
Excellent
Difficulty level
Moderate
Process Duration
Less than 2 weeks
Result
Selected Selected

I applied via Campus Placement and was interviewed in Oct 2023. There was 1 interview round.

Round 1 - Technical 

(4 Questions)

  • Q1. Circular linked list question
  • Q2. SQL, dbms, oops connector basic question
  • Q3. What is abstraction and encapsulation
  • Ans. 

    Abstraction is the concept of hiding complex implementation details and showing only the necessary information. Encapsulation is bundling data and methods that operate on the data into a single unit.

    • Abstraction focuses on what an object does rather than how it does it

    • Encapsulation restricts access to some of an object's components, protecting the object's integrity

    • Abstraction allows for easier maintenance and modificat...

  • Answered by AI
  • Q4. Primary key, difference between primary key and super key
  • Ans. 

    Primary key uniquely identifies a record in a table, while super key is a set of attributes that can uniquely identify a record.

    • Primary key is a subset of super key

    • Primary key cannot have NULL values, while super key can

    • Example: In a table 'Employee', 'EmployeeID' can be a primary key as it uniquely identifies each employee record, while 'EmployeeID, DepartmentID' can be a super key

  • Answered by AI

Interview Preparation Tips

Interview preparation tips for other job seekers - Keep your basic clear in DBMS and SQL, solve medium level question of leetcode

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)

Wissen Technology interview questions for popular designations

 Java Developer

 (22)

 Software Engineer

 (18)

 Senior Software Engineer

 (18)

 Software Developer

 (17)

 Associate Software Engineer

 (8)

 Data Engineer

 (5)

 Senior Software Developer

 (4)

 Trainee Analyst

 (2)

Interview experience
4
Good
Difficulty level
Moderate
Process Duration
-
Result
Not Selected

I applied via Naukri.com and was interviewed in Dec 2023. There were 2 interview rounds.

Round 1 - Coding Test 

6 Objective Questions, 2 Java Coding Question, One Sql query Question 1. Coding: Problem on Josephus Range Game, 2. Coding: Unequal Equal segments.

Round 2 - Technical 

(2 Questions)

  • Q1. 1. Write a program to split array on given split size.
  • Ans. 

    A program to split an array of strings into smaller arrays based on a given split size.

    • Iterate through the array and create a new subarray every split size elements

    • Use array slicing or a loop to extract the subarrays

    • Handle cases where the split size is larger than the array length

  • Answered by AI
  • Q2. 2. Write a program to flatten multi dimension Object[] array to Integer[]
  • Ans. 

    Program to flatten multi dimension Object[] array to Integer[]

    • Use recursion to iterate through the array and flatten each element

    • Check if each element is an array or an integer

    • If it's an array, recursively flatten it

    • If it's an integer, add it to the result array

  • Answered by AI

Interview Preparation Tips

Interview preparation tips for other job seekers - Coding questions are important

Skills evaluated in this interview

Top Wissen Technology Senior Software Engineer Interview Questions and Answers

Q1. Write a javascript function which returns maximum and minimum occurrence of letter from string
View answer (1)

Senior Software Engineer Interview Questions asked at other Companies

Q1. K Largest Elements Problem Statement You are given an integer k and an array of integers that contain numbers in random order. Write a program to find the k largest numbers from the given array. You need to save them in an array and return ... read more
View answer (1)

Get interview-ready with Top Wissen Technology Interview Questions

Data Engineer Interview Questions & Answers

user image Anonymous

posted on 26 Sep 2024

Interview experience
3
Average
Difficulty level
-
Process Duration
-
Result
-
Round 1 - Aptitude Test 

1 hr test contains 2 coding questions and 1 SQL question

Data Engineer Interview Questions asked at other Companies

Q1. Optimal Strategy for a Coin Game You are playing a coin game with your friend Ninjax. There are N coins placed in a straight line. Here are the rules of the game: 1. Each coin has a value associated with it. 2. The game involves two players... read more
View answer (1)

Jobs at Wissen Technology

View all

Data Engineer Interview Questions & Answers

user image Anonymous

posted on 12 May 2024

Interview experience
3
Average
Difficulty level
Moderate
Process Duration
4-6 weeks
Result
Selected Selected
Round 1 - Coding Test 

It is online test shared to email, contains mcq and coding questions

Round 2 - Technical 

(1 Question)

  • Q1. SQL, Azure, Normalization, pyspark

Data Engineer Interview Questions asked at other Companies

Q1. Optimal Strategy for a Coin Game You are playing a coin game with your friend Ninjax. There are N coins placed in a straight line. Here are the rules of the game: 1. Each coin has a value associated with it. 2. The game involves two players... read more
View answer (1)

Python and Django Developer Interview Questions & Answers

user image Prathamesh Kulkarni

posted on 6 Aug 2024

Interview experience
5
Excellent
Difficulty level
-
Process Duration
-
Result
-

I applied via Recruitment Consulltant

Round 1 - Coding Test 

DSA question on kaprekar constant

Python and Django Developer Interview Questions asked at other Companies

Q1. What happens when you enter URL in the chrome URL bar?
View answer (2)
Interview experience
4
Good
Difficulty level
Moderate
Process Duration
Less than 2 weeks
Result
Not Selected

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

Round 1 - Coding Test 

DSA and Algo. Questions on Arrays and Strings.

Interview Preparation Tips

Topics to prepare for Wissen Technology Software Engineer interview:
  • DSA
Interview preparation tips for other job seekers - Low level design, operating system concepts

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
Hard
Process Duration
-
Result
Not Selected

I was interviewed in Apr 2024.

Round 1 - Coding Test 

It was on online platform consists of 7 questions, 2 coding each of 40 marks, 1 SQL query- 20 marks and 4 MCQ's 5 marks each

Round 2 - Technical 

(1 Question)

  • Q1. To merge the array and print it in sorted manner , time complexity of code what you have written, optimise it if required. More on Map, System design questions

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)

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

based on 148 interviews

Interview experience

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based on 414 reviews

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3.6

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3.7

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3.4

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