Infosys Senior Systems Engineer Interview Questions, Process, and Tips

Q1. Basic OOP concept, Collections Multi-threading Spring Basics
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Q1. What are your salary expectations?
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Q2. Share details of your previous job.
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Q3. Why are you looking for a change?
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Q1. Angular releated question
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Q1. Oops questions , all the basics of .net
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A normal aptitude test with coding mcq's and English communication mcq's

Q1. What is the difference between polymorphism and inheritance
Ans. 
Polymorphism is the ability of an object to take on many forms, while inheritance is the process of creating new classes from existing ones.
• Polymorphism allows objects of different classes to be treated as if they were of the same class.

• Inheritance allows a new class to be based on an existing class, inheriting its properties and methods.

• Polymorphism is achieved through method overriding and method overloading.

• Inherita...read more
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Q2. What is the difference between constructor and destructor
Ans. 
Constructor is used to initialize an object while destructor is used to destroy an object.
• Constructor is called when an object is created and can take arguments to initialize the object's state.

• Destructor is called when an object is destroyed and is used to free up any resources allocated by the object.

• Constructor has the same name as the class while destructor has the same name as the class preceded by a tilde (~).

• Exa...read more
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Q3. Type of constructors
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Constructors are special methods used to initialize objects in a class.
• Default constructor: no arguments

• Parameterized constructor: takes arguments

• Copy constructor: creates a new object as a copy of an existing object

• Static constructor: initializes static data members

• Private constructor: restricts object creation outside the class
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Q4. Difference between method overloading and method over riding
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Method overloading is having multiple methods with the same name but different parameters. Method overriding is having a method in a subclass with the same name and parameters as a method in the superclass.
• Method overloading is used to provide different ways of calling the same method with different parameters.

• Method overriding is used to provide a specific implementation of a method in a subclass that is already defin...read more
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Q5. Types of inheritance and their explanation
Ans. 
Types of inheritance include single, multiple, multilevel, hierarchical, hybrid, and multipath inheritance.
• Single inheritance involves a child class inheriting from a single parent class.

• Multiple inheritance involves a child class inheriting from multiple parent classes.

• Multilevel inheritance involves a child class inheriting from a parent class, which in turn inherits from another parent class.

• Hierarchical inheritance...read more
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Q6. Coding of sorting techniques
Ans. 
Sorting techniques are essential for efficient data processing and retrieval.
• Sorting algorithms can be classified as comparison-based or non-comparison-based.

• Some popular comparison-based sorting algorithms are bubble sort, insertion sort, selection sort, merge sort, quicksort, and heapsort.

• Non-comparison-based sorting algorithms include counting sort, radix sort, and bucket sort.

• The choice of sorting algorithm depends...read more
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