Netcracker Technology Junior Software Engineer Interview Questions and Answers

Q1. What was exception handling , is this concept present in C?
Ans. 
Exception handling is a mechanism to handle runtime errors and prevent program crashes.
• It allows the program to gracefully handle errors and continue execution.

• C does have a basic form of exception handling using the setjmp() and longjmp() functions.

• Examples of exceptions include divide by zero, null pointer dereference, and file not found errors.
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Q1. Tell me about yourself
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There were initially 2 coding questions to solve using Java or c++. One was easy and second was bit hard.

Q1. Starting with self intro, cross questions related to projects,deep discussion about basic oops concepts in Java, questions regarding sorting algorithms, difference between hashmap and hashset, 2 to 3 quest...read more
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Q1. Basic intro about me, interviewer started explaining about company and the responsibilities, salary package. I was selected finally and mentioned the location.
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Q1. Explain exceptions in java
Ans. 
Exceptions in Java are events that disrupt the normal flow of program execution, allowing for error handling.
• Java uses a robust exception handling mechanism with try, catch, and finally blocks.

• There are two main types of exceptions: checked exceptions (e.g., IOException) and unchecked exceptions (e.g., NullPointerException).

• Checked exceptions must be either caught or declared in the method signature using 'throws'.

• Unch...read more
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Q2. Coding question related to stack
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Q3. Palindrome of string
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A palindrome is a string that reads the same forwards and backwards, such as 'racecar' or 'level'.
• Definition: A palindrome is a word, phrase, or sequence that is the same when read forwards and backwards. Example: 'madam'.

• Character Ignoring: Palindromes can ignore spaces, punctuation, and capitalization. Example: 'A man, a plan, a canal, Panama!'

• Even and Odd Lengths: Palindromes can have even or odd lengths. Example: '...read more
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A hackeearth based coding test which had basic DSA question and some core cse mcqs

Q1. 1 technical round , 2 techno-managerial round , 3- HR round
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Q2. Remove duplicates from an array - technical round
Ans. 
Remove duplicates from an array of strings using various methods.
• Use a Set: Convert the array to a Set to automatically remove duplicates. Example: `const uniqueArray = [...new Set(array)];`

• Filter Method: Use `filter()` to keep only unique elements. Example: `const uniqueArray = array.filter((item, index) => array.indexOf(item) === index);`

• Reduce Method: Use `reduce()` to build a new array with unique values. Exampl...read more
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Q3. Count no of words in a string taken from a user - techno managerial round
Ans. 
Count the number of words in a user input string.
• Use the split() method to split the string into an array of words.

• Get the length of the array to get the number of words.

• Handle edge cases like leading/trailing spaces and multiple spaces between words.
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Q4. Normals OOPS questions - technical round
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Q5. Basic Programming Language-based questions technical round
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Q6. On Hr round, it was all basic Hr questions with strength and weakness and all
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Aptitude question were not so difficult it was medium.

Q1. Write Fibonacci series program using recursion
Ans. 
Fibonacci series program using recursion
• Define a recursive function to calculate Fibonacci series

• Base case: return 0 if n is 0, return 1 if n is 1

• Recursive case: return sum of previous two Fibonacci numbers
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Q2. C++ related theory questions
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Q1. Medium level c++ theory questions
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Q1. Normal relocation and general questions
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2 DSA question one easy one medium

Q1. Tech interview 1
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Q2. Java concepts in deep
Ans. 
Java concepts cover a wide range of topics including object-oriented programming, data structures, algorithms, and more.
• Object-oriented programming principles like inheritance, encapsulation, and polymorphism

• Data structures such as arrays, linked lists, stacks, and queues

• Algorithms like sorting, searching, and graph traversal

• Exception handling, multithreading, and networking in Java

• Java collections framework including ...read more
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Q1. DSA question HashMap
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Q1. Basic HR questions
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