Amdocs Interview Questions

The recruitment process at Amdocs is pretty arduous and competitive. Check out Amdocs Interview Process for details on the hiring process the recruitment team will be following for their business purposes across the globe. As part of the recruitment process, candidates undergo three rounds that assess both their technical and analytical skills.

• Round 1: Online/Aptitude Test
• Round 2: Technical Interview
• Round 3: HR Interview

Note: Generally, Amdocs officials follow this interview process; however, in some cases, more rounds may be needed to eliminate candidates in bulk if a large number of applications are received. As part of the shortlisting process, the recruitment team may conduct group discussions/ JAM sessions. Thus, applicants must be prepared to handle any type of round in the selection process.  All of these rounds are elimination rounds, which means you must pass them all to be considered for a position at Amdocs. 

1. Aptitude/Online Test

At Amdocs, the online/aptitude assessment round usually consists of five sections: quantitative aptitude, logical, verbal, technical, and coding. Check out the Amdocs Test Pattern that is clearly outlined in the below table to determine what sections will be asked during the Amdocs Written Test. As part of the technical section, you can expect questions related to Java, Unix, SQL, etc. Make sure you follow the pattern and prepare accordingly.

Note: It is possible that the number and type of Amdocs aptitude questions asked, as well as their duration, will vary depending on the job requirements. As there is no negative marking, it is advisable to attempt all questions.

2. Technical Interview Round

Following the Amdocs Online written test, candidates who are shortlisted will be invited to the Amdocs Technical Interview. The purpose of a technical interview is to assess not only your technical abilities, which are invariably related to the position you are seeking but also your ability to resolve conflict and deal with challenging situations. Therefore, you should be prepared for all eventualities. 

• The interviewer might ask you technical questions about programming languages like C, C++, Java, Python, etc., computer fundamentals such as Database Management Systems (DBMS), Object-Oriented Programming Systems (OOPs), Operating Systems (OS), Computer Networks (CN), Data Structures and Algorithms (DSA), etc., and about latest technologies such as ML (Machine Learning), cloud computing, etc.
• Additionally, you will be asked questions related to your past experiences and projects, how you used technology, how you overcame challenges, and how successful your projects were.
• Moreover, since this is a technical round, candidates will be expected to solve Amdocs coding questions related to C, DSA, DBMS, etc. The round may also include solving puzzles. Therefore, you must possess exceptional coding skills to excel in this round.

Note: A company may require you to undergo additional technical interview rounds based on the performance you have shown in previous rounds, your experience, the job profile you hold, and the company's requirements. If you do not know the answer to a question in an interview, do not hesitate to inform the interviewer (in a polite manner). You are 90% likely to be hired by the company if you pass this round. Nevertheless, you must pass the last and most important HR interview as well.

3. HR Interview Round

Academic achievement and technical skills alone will not guarantee you employment. As part of any company's recruitment process, the HR round is generally the last one but it is perhaps the most important. In this round, hiring managers will evaluate candidates' personalities, strengths & weaknesses, communication skills, reasoning ability, and ability to handle the role, and determine if they are a good match for the role. It is advisable to become familiar with the company's leadership principles and vision before attending an HR interview. Be ready to answer any questions that may be asked regarding your resume or behaviour. Answers should be woven accordingly. Here is a list of some of the most common Amdocs HR interview questions.

• I would like to know more about you and your family.
• Which of your qualities makes you well equipped for the job?
• Why Amdocs?
• Which of your hobbies do you enjoy?
• What are your strength and weakness?
• What is your preferred location?
• How do you stay on top of technology?
• Would you be valuable to us if we hired you?
• Are you familiar with Amdocs?
• How do you envision yourself in five years?
• Is there anything you need to know about our company?
• Do you mind doing repetitive tasks?
• Will Amdocs be able to meet your ambitions?
• Which of your accomplishments has provided you with the most satisfaction?
• If you were to live your life over again, what would you do differently?
• How well do you handle the pressure?
• Is there one thing you would change about your personality? If so, why?

The Database Management System (DBMS) creates and maintains databases, allowing controlled access to the data. RDBMS stands for Relational Database Management System, an advanced version of a DBMS. While DBMS stores data in a file, RDBMS stores data in tabular format.

The size of the structure can be calculated straightforwardly in C using the sizeof() operator.

Example:

 #include <stdio.h>
// Declaring a structure named "student"
struct scaler { 
   int emp;
   char name[20];
   char position;
};  
int main() 
{
   struct scaler ib;  // Declaring a structure type data named "ib"
   int size = sizeof(ib);
   printf("Size of Structure : %d", size);
   return 0;
}

Output:

Size of Structure : 28

Yes, two numbers can be swapped without using a third variable. 

//Java program to swap two numbers 
//without using third variable
import java.util.Scanner;
public class Main
{
    public static void main(String args[])
    {
        Scanner sc = new Scanner(System.in);
        System.out.println("Enter two numbers: ");
        
        //consider two numbers as 20 and 10
        int num1 = sc.nextInt(); 
        int num2 = sc.nextInt();
        num1 = num1 + num2;  //num1 = 20 + 10 = 30
        num2 = num1 - num2;  //num2 = 30 - 10 = 20
        num1 = num1 - num2;  //num1 = 30 - 20 = 10
        System.out.println("Numbers after swapping");
        System.out.println("Num1= " + num1 + " " + "Num2= " + num2);
    }
}

Input: 

Enter two numbers: 
20
10

Output: 

Numbers after swapping
Num1= 10 Num2= 20

When a node does not have any child nodes (both left and right), it is referred to as a leaf node, while nodes that contain either left or right child nodes or both are referred to as non-leaf nodes. 

Example: 

Given a BST, count the total number of non-leaf nodes in the tree.

Input:

Code:

// Java program to count number of non-leaf nodes in BST
class Main
{
    static class Node 
    {
    int data;
    Node left;
    Node right;
    }

    static Node newNode(int data)
    {
    Node node = new Node();
    node.data = data;
    node.left = null;
    node.right = null;
    return (node);
    }
 
    //Computes number of non-leaf nodes in a tree
    static int countNonleaf(Node root)
    {
    if (root == null || (root.left == null &&
                        root.right == null))
    return 0;
 
    // If root is not NULL and a child of root is also NULL
    return 1 + countNonleaf(root.left) + countNonleaf(root.right);
    }

 public static void main(String[] args)
  {
    Node root = newNode(70);
    root.left = newNode(32);
    root.right = newNode(85);
    root.left.left = newNode(15);
    root.left.right = newNode(44);
    root.right.left = newNode(74);
    root.right.right = newNode(98);
    System.out.println(countNonleaf(root));
  }
} 

Output: 

 3

Explanation:  The nodes 70, 32, and 85 are non-leaf nodes in the given tree because they have both right and left child nodes.

A binary Search Tree (BST) is a special kind of binary tree (tree-like structure) where the parent and child nodes are linked. Binary Search trees allow only two child nodes per parent node (the root/top node). In BTS, all nodes to the left of the root node contain lower values than the root node, whereas nodes to the right contain greater values as shown below.

Insertion: Insert a node in the BST.  New nodes will either be inserted into the left subtree if their value is less than the root node or into the right subtree if their value is greater than the root node.

//Insertion code for BST
struct node *insert(struct node *root, int val)
{
      // It handles two cases,
      //1. Return new node, if the tree is empty
      // 2. Return new node, if tree traversal reaches NULL     
    if(root == NULL)
        return getNewNode(val);
    
     //If given val is greater than root->key,
     //Insert the new node at the correct place in the right subtree    
    if(root->key < val)
        root->right = insert(root->right,val);

     //If given val is smaller than root->key,
    //Insert the new node at the correct place in the left subtree
    else if(root->key > val)
        root->left = insert(root->left,val);

    return root;
}

Look at the “employees” table below.

If you want to see all the employees who joined in the month of March, then run the following SQL query:

SELECT * FROM employees WHERE to_char(hire_date,'MON') ='MAR';

OR

SELECT * FROM employees WHERE to_char(hire_date,'MON') IN ('MAR');

OR

SELECT * FROM employees WHERE to_char(hire_date,'MON') LIKE 'MAR%';

Output: 

JVM is a virtual machine that provides a run-time environment for executing Java byte code (program). Installing the Java Virtual Machine on your machine depends on which platform and which version you have. Since the configuration of each operating system (OS) varies, JVM is platform dependent as different JVMs are required for different OS. JVM converts Java byte code into machine code for the current OS.

Java is platform-independent because Java byte code is the same across all JVMs. Platform independence refers to the fact that Java byte code(compiled code) can run on any operating system. 

In Java, typecasting (type conversion) is the process of converting primitive datatypes into other types. 

• Widening Casting (automatically): Converts smaller datatypes into larger datatypes. As this casting or conversion is done automatically, it is referred to as implicit casting.

Example:

 public class Main {
  public static void main(String[] args) {
    int x= 10;
    double y = x; // converting int to double

    System.out.println(x);     
    System.out.println(y);   
  }
}

Output:

10
10.0

• Narrowing Casting (manually): Converts larger datatypes into smaller datatypes manually. It is also referred to as downcasting.

Example:

public class Main {
  public static void main(String[] args) {
    double x = 4.56;
    int y = (int) x;      // converting double to int

    System.out.println(x);   
    System.out.println(y);   
  }
}

Output:

4.56
4

In C language, dynamic memory allocation allows programmers to allocate memory at runtime. C provides four library functions for dynamic memory allocation that are defined in <stdlib.h> header file. These library functions are as follows:

• malloc(): Allocates one large block of memory dynamically of the specified size. In Malloc, memory is allocated dynamically, and the default value for the allocated memory is garbage, while in Calloc, it is 0 (zero).
• calloc(): Allocates a specified number of blocks of memory dynamically of the specified size.
• free(): Dynamically de-allocate the memory created with either calloc() or malloc() as it doesn't get freed automatically.
• realloc(): Dynamically alter the memory allocation of previously allocated memory. Basically, if the memory previously allocated using malloc() or calloc() is inadequate, realloc() can perform a dynamic reallocation of memory.

Garbage collection refers to the process of recovering the pooled storage that has been used by a program when the program no longer needs it. Objects that are not being used in runtime are collected and destroyed in the garbage collection process. 

• Garbage Collection in C++: C++ does not have automatic garbage collection. The programmer is responsible for creating and destroying objects in C/C++. Sometimes, a programmer overlooks the destruction of unused objects, and as a result, at some point, there is not enough memory available to create new objects, and the entire program terminates abnormally, leading to OutOfMemoryErrors.
• Garbage Collection in Java: A Java programmer does not have to worry about all those unused objects. A garbage collector takes care of them. Garbage collection is an automatic memory management procedure in Java. When Java programs run on the JVM, objects instantiated are stored in the heap memory (part of memory allocated to the program). Some objects will eventually no longer be required. This unused memory is removed by the garbage collector.

Fragmentation is an undesirable occurrence within an operating system when processes are loaded/unloaded from memory and free memory space is fragmented (divided into smaller pieces/fragments). Since memory blocks are small, processes cannot be assigned to them, and the memory blocks remain unused. There are two types of fragmentation in OS as given below: 

• Internal fragmentation: Any time a memory block is assigned to a process if the allocated memory is greater than the requested memory, a free space is created within the memory block. This causes the free space of the memory block to be unused, which results in internal fragmentation.

• External fragmentation: External fragmentation is a situation when there is an adequate amount of space in the memory to satisfy the memory requirements of a process, but the memory offered is not contiguous so the request cannot be fulfilled.

As you can see above, there is enough memory (70 KB) to run a process (03) (needs 60KB), but the memory is not contiguous. Use paging, compaction, and segmentation to make use of the free space.

In Java programming, overriding and overloading are the basic concepts that allow for polymorphism. 

• Overriding Example:

 class InterviewBit 
{
void show()
    {    System.out.println("InterviewBit");
    }
}
class Scaler extends InterviewBit 
{
void show()
    {
    super.show();
    System.out.println("Scaler by InterviewBit");
    }
}
class Main
{
public static void main(String args[]) 
   {
    InterviewBit ob = new Scaler();
    ob.show();
   }
}

Output:

InterviewBit
Scaler by InterviewBit

• Overloading Example:

class Main 
{ 
    static int add(int x, int y)
    {
      return x + y;
    }
 
    static int add(int x, int y, int z)
    {
        return x + y + z;
    }
 
    public static void main(String args[])
    {
        System.out.println("x + y = " + add(4, 5));
        System.out.println("x + y + z = " + add(4, 5, 6));
    }
}

Output:

x + y = 9
x + y + z = 15

Java wrapper classes are classes whose objects wrap or contain primitive data types. Primitive types (such as int, float, char, etc.) are converted into objects using wrapper classes. Below is a table showing the primitive type and its equivalent/corresponding wrapper class:

The class Throwable is the root class (base class) of the hierarchy and is present in java.lang package. This class contains two subclasses, namely Error and Exception.

• Error Class: An Error class is a superclass of all runtime error classes and a subclass of Throwable. Errors generally represent a problem or situation that is hard to solve. It is not the result of programming errors but occurs when the system does not work properly or a resource is not allocated as it should be. VirtualMachineError, LinkageError, OutOfMemoryError, AssertionError, InternalError, etc., are some examples of errors.
• Exception Class: The exception class is a superclass of all the exception classes and a subclass of the Throwable.  It is used for exceptional conditions that user programs need to catch and handle. ClassNotFoundException, IllegalArgumentException, NullPointerException, etc., are some examples of exceptions.

An exception is a situation that occurs unexpectedly while executing the program, i.e. at run time, that disrupts the normal flow of the program. Java has two types of exceptions:

• Checked exceptions: These are the exceptions that are checked at compile time. During compilation, the Java compiler determines whether the method that has thrown the exception contains the code to handle it properly with the try-catch block or the throws keyword is used to declare the method. If the compiler fails to find either of those two cases, then it gives an error. Examples of checked Exceptions: 
  • SQLException
  • IOException
  • InvocationTargetException
  • FileNotfound Exception
  • ClassNotFoundException, etc.
• Unchecked exceptions: Also known as runtime exceptions, these exceptions are encountered during the execution of a program. Unchecked exceptions are mostly caused by programming errors, such as trying to access an element with an invalid index, or calling a method with invalid arguments. Examples of unchecked exceptions: 
  • ArithmeticException
  • NullPointerException
  • llegalStateException
  • Missing Resource Exception
  • NumberFormatException
  • Undeclared Throwable Exception
  • ArrayIndexOutOfBoundsException, etc.

Some types of errors that can occur while programming:

• Syntax Errors: Computer languages have specific grammar rules. If these rules aren't followed (for instance, omitting parentheses while writing code), an application won't run.
• Logic Errors: A logic error occurs when the programmer did not program the machine to do the correct thing. It can be extremely frustrating to deal with because there's nothing wrong with the code itself.
• Compilation Errors: Compilation is the conversion of high-level coding languages into lower-level languages that computers can understand. A compiler error occurs when it is unable to properly translate high-level code into lower-level code.
• Runtime Errors: Runtime errors occur while the user is executing your program. In these cases, a programmer's code doesn't work with another computer even if it works perfectly on his or her own system.
• Arithmetic Errors: These errors involve mathematical errors in the programming code.

In Java, polymorphism is a concept by which a single action can be performed in different ways. This word is composed of two words in geek slang, i.e. poly means many and morphs means forms. Polymorphism thus basically means many forms. The two types of polymorphism are shown below: 

Example:

class Scaler {
  public void products() 
  {
    System.out.println("Scaler Products");
  }
}

class ScalerEdge extends Scaler {
  public void products() 
  {
  System.out.println("Scaler Edge: College-companion program for university students");
  }
}

class ScalerAcademy extends Scaler {
  public void products() 
  {
 System.out.println("Scaler Academy: Tech leadership program for mid-tenure professionals");
  }
}

class Main {
  public static void main(String[] args) {
    
    //Create a Scaler object
    Scaler myScaler = new Scaler(); 

    //Create a ScalerEdge object
    Scaler myScalerEdge = new ScalerEdge();     

    //Create a ScalerAcademy object
    Scaler myScalerPlus = new ScalerAcademy();      
    
myScaler.products();
    myScalerEdge.products();
    myScalerAcademy.products();
  }
} 

Output:

Scaler Products
Scaler Edge: College-companion program for university students
Scaler Academy: Tech leadership program for mid-tenure professionals

Essentially, typecasting refers to the process of converting a variable from one data type to another. As an example, for a given set of operations, an integer type variable can be treated as a character type. In C++, there are two types of typecasting, Implicit Type Conversion, and Explicit Type Conversion.

• Implicit Type Conversion/Casting: Also known as 'automatic type conversion', this conversion type is executed by the compiler automatically, without user intervention.

// C++ program for implicit conversion
#include <iostream>
using namespace std;
int main()
{
   short a = 50;              
   int y;  
   //a is implicitly converted to short type
   y = a; 

   int x = 50;                   
   char ch = 'c';                 
   //ch is implicitly converted to int type
   //ASCII value of 'c' is 99
   int num = x + ch;
  
    //x is implicitly converted to float type
    float z = x + 5.0;
  
    cout << "Typecasting short a to int data type y= " << y << endl;
    cout << "Typecasting char ch to int data type num= " << num << endl;
    cout << "Typecasting int x to float data type z= "<< z << endl;
  
    return 0;
}

Output:

Typecasting short a to int data type y= 50
Typecasting char ch to int data type num= 149
Typecasting int x to float data type z= 55

• Explicit Type Conversion/Casting: Explicit conversions involve the user manually converting the data from one type to another.

Example:

// C++ program for explicit conversion
#include <iostream>
using namespace std;
int main()
{ 
    double x=25.5; 
    int y;  

    // Explicit conversion from double type to int 
    y = (int)x + 5;  
    cout<< "y= " << y << endl;        
    return 0;                                                                                     
}  

Output:

y= 30

Both Object-Oriented Programming and Procedural Programming are high-level programming languages used for developing applications.

Data abstraction involves exposing only the most essential information about the data to the outside world, obscuring the implementation or background details. As an example, let's look at a mobile phone. It is common for smartphone users to know how to make a phone call, play music/videos, access the Internet, and even store data on the phone. Moreover, he does not know how these functions are implemented in the mobile or its inner mechanism. The user is presented with an interface that conceals such details. This is what data abstraction is all about.

In C++, Data abstraction can be achieved in two ways:

• Abstraction using Class: Data abstraction is achieved by utilizing access specifiers in classes. It allows programmers to decide which information or functions are to be made accessible to users and which are to remain hidden. There are three types of access specifiers: private, public, and protected.
• Abstraction in headers: Data abstraction is achieved using different functions from different header files. An example would be using the pow() function of the header file ‘math.h’.

In the midst of sending resumes and applications, you are finally invited to an interview at your dream technology company.  IT interviews are highly specialized, rigorous processes that involve evaluating your programming skills, problem-solving abilities, and personality traits. Yet, the question remains; how do you convince the gauntlet of potential employers that you are the right person for the job and won't let them down? From entry-level to experienced tech professionals, here are the essential tips for nailing your next Amdocs interview. 

• Practice!Practice!Practice: Take a look at past interview experiences to get an idea about how an interview is conducted, what to expect, and how to prepare for it. For the aptitude test, practice regularly on whichever websites or books you prefer, and you'll gain speed quickly. Look at the job description of the company; specifically, they will outline what subject matter and topics they will ask. Attend the pre-placement talk (if conducted) to find out what the company is looking for and prepare accordingly. The HR round is simple - lookup common questions for the HR round, write down the points from the pre-placement talk that pertain to the company and make sure to have those points ready when they ask any questions related to the company.
• Brush up the Basics: As a prerequisite, you should possess an understanding of data structures and algorithms (such as trees, hash maps linked lists, sorting, traversing, searching, etc.), DBMS, networks, object-oriented programming concepts, and a programming language of your choice (such as C, C++, Java, Spring). Possess good knowledge of SQL like normalization and joining.
• Don’t lie on your CV: The interviewer may ask you to elaborate on past volunteer and work experiences or may ask you to perform tasks that are not familiar with, so lying on a resume may end up ruining your chances of getting hired. Instead, highlight your relevant skills and experiences, and let the company know why you are a good match for the position.
• Never be afraid to ask questions: Don't just jump into coding when faced with a challenge; ask questions about the input (even if you know the answer already) and don't be afraid to ask for hints if you get stuck. At the end of each round, you have the opportunity to ask questions about the company, so do not miss out on this opportunity.
• Show off your skills: Don't be silent as you write the code; say out loud whatever is going through your mind. Moreover, seek out opportunities to demonstrate your knowledge and expertise. Whenever you talk or discuss your thoughts, remember to include everything you'd include in a real-world application.
• Take a Fresh Look: Last but not least, interviewees are likely to learn during the interview process. Nevertheless, attending an interview can provide you with new perspectives. For instance, you might learn about a new idea or a new tool, or you might get a glimpse into products and technologies that you didn't before. By approaching interviews in this way, you're more likely to benefit from them in the long term.

The Amdocs interview process involves 3-4 rounds. It takes at least one-two week for the interview process to be completed, depending on your technical skills. In most cases, once a person has been told that he or she has cleared all rounds, he can expect to receive the offer letter in approximately 5–7 working days. They will contact you right away if they have a vacancy for you.

Yes, Amdocs offers a joining bonus to new employees. Generally, it is around 10% of your CTC.

The Amdocs interview is pretty straightforward, and most people seem to breeze through it without a problem. It is only the Amdocs written test that might be challenging. Preparation is key to a successful job interview since you will appear relaxed, calm, and collected to your potential employer, which is what employers seek in the ideal candidate. 

Among the entry-level roles offered by Amdocs are Associate software engineer, Software Support Engineer, Analyst, etc. Associate Software Engineer salaries at Amdocs in India range from ₹ 4 Lakhs to ₹ 9 Lakhs. The average Amdocs fresher salary can be ₹ 5.5 Lakhs for less than one year of experience.

With its innovative, award-winning technology, Amdocs is driving the digital society forward. Amdocs is an incredible organization from every angle, be it learning, money, fun, professional life, corporate, and so forth. It's a great place to work where you can have fun as well as learn. The company is well known for its employee-friendly culture. Among the perks of working at Amdocs is the exposure to legacy technologies as well as the use of the latest technology in certain projects. Amdocs also offers a competitive salary.