Mu Sigma Technical Interview Questions

Mu Sigma Technical Interview Questions and Answers 2023

This page contains the current syllabus and also the most recently asked technical interview questions in the Mu Sigma Technical Interview 2024.

Page Highlight:

  • Mu Sigma Interview Pattern
  • Top 20 Mu Sigma Technical Interview Questions
Musigma technical interview questions

Mu Sigma Interview Pattern

Mu Sigma Previous Paper 2023No Of Questions
MuApt28 Question
General Knowledge5 Question
Star Question2 Question
Case Study4 question
Pseudo Code2 Question

Top 20 Mu Sigma Technical Interview Questions

Question 1: Describe a typical analytical process.


Data analysis is the process of identifying, collecting, cleaning, analyzing, and modeling data in order to obtain meaningful information and insights and to comprehend the resulting information for data-driven decision-making.

The five steps of the analytical process are as follows:

  • Determine why you require analysis.
  • Start gathering information from various sources.
  • Remove all unnecessary data.
  • Start by analyzing the data.
  • Interpret and apply the results

Question 2:- What is polymorphism?


The ability to operate objects differently based on their class and data type is referred to as polymorphism. 

Question 3: Which software model is most efficient?


The Waterfall Development Method is the most effective software development model.

Questions 4: What is feedback in Control System?


The feedback in a control system is one in which the output is sampled and a proportional signal is sent back to the input for automatic error correction (any change in the desired output) for further processing to obtain the desired output.

Question 5: What is the Q factor?


Q is the ratio of the energy given by the resonator to the energy stored in it, per cycle, to maintain a constant signal amplitude at a frequency where the stored energy is constant throughout time. This ratio is used in electrical circuits.

Question 6: Write a C++ program to print fibonacci series.

// Write a program to print fibonacci series in C++
using namespace std;

int main()
    int num = 15;
    int a = 0, b = 1;
    // Here we are printing 0th and 1st terms
    cout << a << ", " << b << ", ";
    int nextTerm;
    // printing the rest of the terms here
    for(int i = 2; i < num; i++){
        nextTerm = a + b;
        a = b;
        b = nextTerm;
        cout << nextTerm << ", ";

    return 0;


Question 7: What is Encapsulation in JAVA?


In Java, encapsulation refers to the integration of data (variables) and code (methods) into a single unit. Variables in a class are hidden from other classes and can only be accessible by the methods of the class in which they are present in encapsulation.

Question 8: Write a program to find the Armstrong number or not using JAVA.

public class Main
  public static void main (String[]args)
    int num = 407, len;

    // function to get order(length)
      len = order (num);

    // check if Armstrong
    if (armstrong (num, len))
        System.out.println(num + " is armstrong");
        System.out.println(num + " is armstrong");


  static int order (int x)
    int len = 0;
    while (x != 0 )
	x = x / 10;
    return len;

  static boolean armstrong (int num, int len)

    int sum = 0, temp, digit;
    temp = num;

    // loop to extract digit, find power & add to sum
    while (temp != 0)
	// extract digit
	digit = temp % 10;

	// add power to sum
	sum = sum + (int)Math.pow(digit, len);
	temp /= 10;

    return num == sum;

Question 9: What is UNIX?


UNIX is an entire operating system package designed primarily for servers, workstations, and mainframes. It is a trademarked name. It can only be used by the copyright holders. It features an entirely distinct coding devised by AT&T labs, is highly secure, and has listed approximately 85-120 viruses to date.

Question 10: What is Control System?


When the output and inputs of a system are interconnected in such a way that the output quantity or variable is controlled by the input quantity, the system is referred to as a control system. The controlled variable or response is the output quantity, while the command signal or excitation is the input quantity.

Question 11: What are the major Data Structures used in RDBMS, Network Data Model and Hierarchical Data Model?


  • RDBMS: Array (i.e., Array of structures)
  • Network data model: Graph
  • Hierarchical data model: Trees

Question 12: Write a C program to find the prime factors of a number.


void primefactors(int n) {
// Print the number of 2s that divide n 	        
while (n % 2 == 0) {                
printf("%d ", 2);                
n = n / 2;         	    }
// n must be odd at this point.  So we can skip ne element (Note i = i +2)
for (int i = 3; i <= sqrt(n); i = i + 2) {  
                 // While i divides n, print i and divide n          
while (n % i == 0) {                       
     printf("%d ", i);               	
     n = n / i;               	       
//This condition is to handle the case when n is a prime number greater than 2   
  if (n > 2)  {
printf("%d ", n);
 int main() {       
 int number = 24;        
printf("Prime factor of the number: ");        
 return 0; 


Question 13: What is procedural programming?


Procedural Programming may be the first programming paradigm learned by a new developer. The procedural code, in its simplest form, is the code that tells a device how to do a task in a logical sequence. Data and methods are seen as two distinct entities in this paradigm, which follows a linear top-down approach.

Question 14: Write code to find a friendly pair or not in C.


int getDivisorsSum(int num){
    int sum = 0;
    for(int i = 1; i < num; i++){
        if(num % i == 0)
            sum = sum + i;
    return sum;

int main ()
    int num1 = 6, num2 = 28;
    int sum1 = getDivisorsSum(num1);
    int sum2 = getDivisorsSum(num2);
    if(sum1/num1 == sum2/num2)
        printf("(%d, %d) are friendly pairs", num1, num2);
        printf("(%d, %d) are not friendly pairs", num1, num2);

// Time complexity: O(N)
// Space complexity: O(1)

Question 15: What are the advantages of DBMS?


Advantages of DBMS are:

  • Redundancy is reduced
  • Integrity limitations must be enforced.
  • Unauthorized access is strictly prohibited.
  • Backup and recovery services are available.

Question 16: What do you mean by Run Time Error?


A runtime error arises when a program is syntactically correct but contains an issue that is only discovered during program execution. The Java compiler cannot detect these problems at compile time, and the Java Virtual Machine (JVM) detects them only when the application is running.

Question 17: What is Data Type?


A data type is a class used in programming that identifies the kind of value a variable has and the kinds of mathematical, relational, and logical operations that can be performed on it without producing an error.

Question 18: Which operation in SQL performs pattern-matching?


LIKE operator performs pattern matching in SQL.

Question 19: Write to find the HCF of two numbers using C++.

using namespace std;

int main()
int num1 = 36, num2 = 60, hcf = 1;

for(int i = 1; i <= num1 || i <= num2; i++)
if(num1 % i == 0 && num2 % i == 0)
hcf = i;

cout<<"HCF of "<<num1<<" and "<<num2<<" is "<<hcf;

return 0;

Question 20:- What are the different layers in the OSI model?


Layers of the OSI model are:

  • Application layer ( 7th Layer)
  • Presentation layer (6th Layer)
  • Session layer (5th Layer)
  • Transport layer(4th Layer)
  • Network layer(3rd Layer)
  • Data Link layer (2nd Layer)
  • Physical layer(1st Layer)