Fidelity International Software Engineer Level 1 Interview Questions and Answers

Data Structures and Algorithms

Q1. Data structures and Algorithms
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Q1. Data Structures And Algorithms
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Q1. Basic understanding of the resume, resume based question, web based questions
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Q1. Solid principles
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Q2. OOPS concepts in c++
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OOPS concepts in C++ include encapsulation, inheritance, polymorphism, and abstraction.
• Encapsulation: bundling data and methods that operate on the data into a single unit (class)

• Inheritance: creating new classes based on existing classes, allowing for code reuse

• Polymorphism: ability for objects of different classes to be treated as objects of a common superclass

• Abstraction: hiding complex implementation details and sh
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Q3. Multi threading and its implementation
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Multi threading is a programming concept where multiple threads run concurrently within a single process.
• Multi threading allows for better utilization of CPU resources by running multiple tasks simultaneously.

• Threads share the same memory space, which can lead to synchronization issues if not handled properly.

• Examples of multi threading implementations include Java's Thread class, C#'s Task Parallel Library, and Python
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Q4. Diamond problem in c++
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Diamond problem occurs in multiple inheritance when a class inherits from two classes that have a common base class.
• Diamond problem can be resolved using virtual inheritance in C++.

• Virtual inheritance ensures that only one instance of the common base class is inherited by the derived class.

• Example: class A is inherited by classes B and C, then class D inherits from both B and C. Using virtual inheritance for class A re
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Q5. Types of inheritance and examples
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Types of inheritance include single, multiple, multilevel, hierarchical, hybrid, and multipath inheritance.
• Single inheritance: a class inherits from only one base class.

• Multiple inheritance: a class inherits from more than one base class.

• Multilevel inheritance: a class inherits from a class which in turn inherits from another class.

• Hierarchical inheritance: multiple classes inherit from a single base class.

• Hybrid inher...read more
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Q6. Runtime and compile time polymorphism
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