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Qantler Technologies Fresher Interview Questions with Answers – Part 2

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Qantler Technologies Fresher Interview Questions with Answers – Part 2

This blog explains about Qantler Technologies Fresher Interview Questions with Answers – Part 2 and is given below:

Qantler Interview Questions

We have already discussed about some questions in the previous blogs.  You could get details here about the previous blog.

1. What is database? Name few databases.

A database is like a computer which has information stored on it and this information we can add or modify as required. Similarly, a database management system (DBMS) has software for creating and managing data in the databases. These provide users and people who program a proper way for data retrieval, management, updating, and creation.

The Best Database Management Tools

 The list includes some best free database management software.

1)Oracle RDBMS:

2) IBM DB2:

3) Microsoft SQL Server:

4) SAP Sybase ASE:

5) Teradata:

6) ADABAS:

7) MySQL:

8) FileMaker:

9) Microsoft Access:

10) Informix:

11) SQLite:

2. List out few technologies used for mobile application development ?

There are 3 types of apps:

Native apps

iOSon Objective-C or Swift

Androidon Java

Windows Phone on Net

Hybrid appsfor all platforms altogether with Xamarin, React Native, Ionic, Angular Mobile Sencha Touchetc.

Web apps as responsive versions of websiteto work on any mobile device.

3. List out few technologies used for web application development.

  Browser

 HTML

CSS

Programming Languages

Frameworks

Libraries 

Databases

Client (or Client-side)

Server (or Server-side)

Front-end

Back-end

Protocols

API

Data formats

 4. Is compiler a software or hardware or firmware?

HARDWARE is the physical arrangement of electronic parts that can only be changed with a screwdriver or soldering iron.  It is purely physical.

SOFTWARE is the arrangement of digital instructions that guide the operation of  computer hardware.  Software is loaded from storage (flash, disk, network, etc) into the computer’s operating memory (RAM) on demand, and is designed to be easy to change.

FIRMWARE is a special class of software that is not intended to change once shipped.  An update requires either a swap of chips or a special process to reload the flash memory containing the software.

5. Do you have laptop? If yes, what is the configuration of it?

 These are the most important things to consider when choosing a new laptop.

12.5 to 14-inch screens offer the best balance between usability and portability. Larger screens are fine if you don’t travel much and smaller models are great for kids.

  • If you’re spending over $600, shoot for these minimum specs:

    • Core i5 CPU

    • 1920 x 1080 screen

    • 8GB of RAM

    • SSD Storage instead of a hard drive.

  • 8+ hours of battery lifeis ideal if you plan to take your laptop anywhere at all.

  • Consider a 2-in-1if you want to use your laptop as a tablet. If not, a standard clamshell notebook may be a better choice.

  • Chromebooks are good for kids. Windows laptopsand MacBooks both offer plenty of functionality; which platform you prefer is a matter of personal taste.

 6. Write a program to check if the given year is a leap year.

// C program to check if a given 

// year is leap year or not

#include <stdio.h>

#include <stdbool.h>

  

bool checkYear(int year)

{

    // If a year is multiple of 400, 

    // then it is a leap year

    if (year % 400 == 0)

        return true;

  

    // Else If a year is muliplt of 100,

    // then it is not a leap year

    if (year % 100 == 0)

        return false;

  

    // Else If a year is muliplt of 4,

    // then it is a leap year

    if (year % 4 == 0)

        return true;

    return false;

}

  

// driver code

int main()

{

    int year = 2000;

  

    checkYear(year)? printf(“Leap Year”):

                   printf(“Not a Leap Year”);

    return 0;

}

Output:

Leap Year

 7. Write a program to find biggest among 3 numbers.

public class Largest {

     public static void main(String[] args) {

         double n1 = -4.5, n2 = 3.9, n3 = 2.5;

         if( n1 >= n2 && n1 >= n3)

            System.out.println(n1 + ” is the largest number.”);

         else if (n2 >= n1 && n2 >= n3)

            System.out.println(n2 + ” is the largest number.”);

         else

            System.out.println(n3 + ” is the largest number.”);

    }

}

When you run the program, the output will be:

3.9 is the largest number.

 8. Write a program to count the number of vowels and constants in a given string.

public class Count {

     public static void main(String[] args) {

        String line = “This website is aw3som3.”;

        int vowels = 0, consonants = 0, digits = 0, spaces = 0;

         line = line.toLowerCase();

        for(int i = 0; i < line.length(); ++i)

        {

            char ch = line.charAt(i);

            if(ch == ‘a’ || ch == ‘e’ || ch == ‘i’

                || ch == ‘o’ || ch == ‘u’) {

                ++vowels;

            }

            else if((ch >= ‘a’&& ch <= ‘z’)) {

                ++consonants;

            }

            else if( ch >= ‘0’ && ch <= ‘9’)

            {

                ++digits;

            }

            else if (ch ==’ ‘)

            {

                ++spaces;

            }

        }

         System.out.println(“Vowels: ” + vowels);        System.out.println(“Consonants: ” + consonants);

        System.out.println(“Digits: ” + digits);

        System.out.println(“White spaces: ” + spaces);    }

}

When you run the program, the output will be:

Vowels: 6

Consonants: 11

Digits: 3

White spaces: 3

 9. Find the biggest of N numbers:

 Get multiple numbers one by one as input.

 Stop the user input if the user enters q.

Find the biggest number and show.

Program to print largest and smallest of N numbers

 

import java.util.Scanner;

 /*

* Java Program to find the largest and smallest of N numbers

* without using arrays.

 */

 public class LargestOfN {

   public static void main(String[] args) {

     System.out.println(“Welcome to Java Program to find ” 

      + “largest and smallest number without using array”);        System.out.println(“Please enter value of N: “);

     Scanner sc = new Scanner(System.in);

    int n = sc.nextInt();

    int largest = Integer.MIN_VALUE; 

   int smallest = Integer.MAX_VALUE;

     System.out.printf(“Please enter %d numbers %n”, n);

    for (int i = 0; i < n; i++) {

       int current = sc.nextInt();

      if (current > largest) {

        largest = current;

      }

      if (current < smallest) {

        smallest = current;

       }

    }

     System.out.println(“largest of N number is : ” + largest);    System.out.println(“smallest of N number is : ” + smallest); 

}

 }

References : Qantler Technologies Fresher Interview Questions with Answers – Part 1

https://payilagam.com/blogs/qantler-technologies-fresher-interview-questions-with-answers-part-1/

Qantler Technologies Interview Process – Step-by-Step

Here’s a breakdown of the typical Qantler Technologies interview process:

✅ Step 1: Application & Resume Screening

Apply through the official Qantler careers page, LinkedIn, or job portals.

✅ Step 2: Online Assessment

Includes:

  • Aptitude test (Quantitative + Logical Reasoning)

  • Technical MCQs (focused on C, Java, or Python)

✅ Step 3: Technical Interview

Questions on:

  • Data structures

  • Programming logic

  • Database queries

  • Basic algorithms

✅ Step 4: HR Interview

General questions about your background, project work, and salary expectations.

✨ Candidates report the process is smooth, and the interviewers are friendly.

 Common Qantler Technologies Interview Questions (With Answers)

Q1: What is the difference between ArrayList and LinkedList in Java?
A: ArrayList uses dynamic arrays; LinkedList uses nodes. ArrayList is faster for searching, LinkedList is faster for insertion/deletion.

Q2: What is the output of 2 + “2” in Java?
A: 22 (String concatenation)

Q3: What are joins in SQL? Name types of joins.
A: Joins combine rows from two or more tables. Types: INNER JOIN, LEFT JOIN, RIGHT JOIN, FULL JOIN.

Q4: What is normalization in databases?
A: It’s the process of organizing data to reduce redundancy. There are 1NF, 2NF, 3NF, and BCNF.

Q5: Explain OOPs concepts.
A: Encapsulation, Inheritance, Polymorphism, and Abstraction.

Sample Coding Questions Asked at Qantler

Candidates report these types of Qantler Technologies coding questions:

  • Reverse a string using recursion

  • Find duplicates in an array

  • Implement binary search

  • Convert a decimal to binary

  • Fibonacci series (both iterative and recursive)

What Does Qantler Technologies Look Like?

Curious about the office or environment? A simple image search for “Qantler Technologies photos” will show their infrastructure, team events, and office setup. Many images are available on LinkedIn or Google Business Profile.

FAQs – Qantler & Similar Interview Queries

Q1: Is Qantler Technologies a good company for freshers?
Yes, many freshers have shared positive feedback about the hands-on learning experience.

Q2: What is the interview process at Qantler Technologies?
4 Rounds: Aptitude test, Technical MCQ, Coding/Tech Interview, HR Round.

Q3: Is Qantler the same as Quantler?
Yes — “Quantler Technologies” is a common spelling variation for “Qantler Technologies.”

Q4: Are there similar companies like Qantler?
Yes, companies like Qugates Technologies also hire freshers through similar interview patterns.

Q5: How can I prepare for the Qantler interview?
Practice aptitude, MCQs, basic coding, and OOP concepts. Brush up on DBMS and project explanations.

Final Tips

  • Focus on clarity and logic in technical interviews

  • Communicate your thought process clearly

  • Be honest if you don’t know the answer — explain how you’d approach it

  • Prepare 1–2 academic or mini-projects to talk about

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