HCL Infosystems Network Engineer Interview Questions and Answers

It was a test with sectional cutoff, i.e. you need to clear each and every section.

Q1. OOPS concepts. What is are the different access modifiers with examples? Explain your project. And more, I don't remember rest.
Ans. 
Access modifiers in OOPS and project explanation
• Access modifiers control the visibility of class members

• Public: accessible from anywhere

• Private: accessible only within the class

• Protected: accessible within the class and its subclasses

• Project: accessible within the same package

• Example: public class Car { private int speed; protected String model; }

• My project involved developing a web application for managing inventory

• Us...read more
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Q1. Sql basics c basics oops concept sdlc
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Round duration - 120 minutes
Round difficulty - Medium

Q1. 
Binary Palindrome Check
Given an integer N, determine whether its binary representation is a palindrome.
Input:
The first line contains an integer 'T' representing the number of test cases. 
The next 'T'...read more
Ans. 
Check if the binary representation of a given integer is a palindrome.
• Convert the integer to binary representation.

• Check if the binary representation is a palindrome by comparing it with its reverse.

• Return true if it is a palindrome, false otherwise.
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Q2. 
Find Position of First One
Given a sorted array of integers of size N, consisting only of 0's and 1's, identify the position of the first occurrence of '1', using 1-based indexing.
If the array contains ...read more
Ans. 
Find the position of the first occurrence of '1' in a sorted array of 0's and 1's.
• Iterate through the array and find the index of the first '1'.

• Return the index + 1 as the position (1-based indexing).

• If no '1' is found, return -1.
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Q1. C questions on pointers
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Q1. Explain the mini projects and main project completed during Engineering.
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Verbal Ability, Aptitude, Reasoning, Technical MCQ

Q1. Share details of your previous job.
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Q2. Tell me about your project.
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Q3. Tell me about OOPs concept.
Ans. 
OOPs concept stands for Object-Oriented Programming which is a programming paradigm based on the concept of objects.
• OOPs focuses on creating objects that have properties and methods

• Encapsulation, Inheritance, and Polymorphism are the three main pillars of OOPs

• OOPs allows for modular and reusable code

• Examples of OOPs languages include Java, C++, and Python
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