Decision Point Senior Software Engineer 1 Interview Questions and Answers

Two coding questions, one is easy and the other is difficult. Who solved 2nd question was shortlisted for an interview.

Q1. Introduce yourself—questions from OS, DBMS, DSA, Project, and one coding problem.
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Q1. Maximal rectangal
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Q2. Loop in linked list
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Loop in linked list is a situation where a node points to a previous node in the list, creating an infinite loop.
• Check for loops using Floyd's cycle detection algorithm

• Use two pointers, one moving twice as fast as the other, to detect a loop

• If the fast pointer catches up to the slow pointer, there is a loop
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Q1. Basic hr question regarding your project and all
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Q2. He was more interested in what is my thinking pattern
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Q1. Multiprocessing
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Q1. Django ORM queries, python basic
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Q1. Company culture and compensation discussion
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Q1. Asked about projects. Quite aloberately.
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Q2. What is authorization and authentication?
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Authentication verifies the identity of a user, while authorization determines what actions they are allowed to perform.
• Authentication confirms the identity of a user through credentials like passwords or biometrics.

• Authorization determines the level of access a user has to resources or actions.

• Example: Logging into a system with a username and password is authentication, while being able to view or edit specific files
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It was an easy test. It consisted of MCQs and two coding qns. Prepare SQL well. It also had 2 programming question. Both were medium difficukty

Q1. It was mainly focussed on my projects. Be thorough with you resume. But it also depends on the interviewer.
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Q1. OOps, C#, MVC, WEBAPI, Azure
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Q2. Multiple inheritance concept in OOPs?
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Multiple inheritance allows a class to inherit attributes and methods from more than one parent class.
• In multiple inheritance, a class can inherit from two or more parent classes.

• It can lead to the Diamond Problem where a class inherits from two classes that have a common ancestor.

• Languages like C++ support multiple inheritance.

• Example: class ChildClass : public ParentClass1, public ParentClass2 {}
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Q3. What is interface?
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An interface in software development defines a contract for classes to implement, specifying methods and properties that must be included.
• Interfaces in programming languages like Java, C#, and TypeScript allow for multiple inheritance by defining a set of methods that a class must implement.

• Interfaces are used to enforce a common structure across different classes, promoting code reusability and maintainability.

• Example...read more
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Create Crud operation using angular with API.

Q1. Valid parentheses
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Q2. Currying with arrow function
Ans. 
Currying is a technique in functional programming where a function with multiple arguments is transformed into a sequence of nested functions, each taking a single argument.
• Currying can be achieved using arrow functions in JavaScript.

• Arrow functions automatically bind 'this' and do not have their own 'this' value.

• Example: const add = a => b => a + b;

• Example: const addFive = add(5); const result = addFive(3); // result
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Q1. DFS related problem
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Q2. Machine coding round
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Q1. Data structures
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Q2. Solid Principles
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Q3. Single responsibility principle
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Single responsibility principle states that a class should have only one reason to change.
• Each class should have only one responsibility

• Helps in making code more maintainable and easier to understand

• Promotes separation of concerns

• Example: A class that handles user authentication should not also handle file management
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Q4. Javascript question
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Q5. Object oriented concepts
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