GlobalLogic Technical Architect Interview Questions, Process, and Tips

Q1. Explain virtual dom in React.
Ans. 
Virtual DOM is a lightweight copy of the actual DOM in React, used for efficient updates.
• Virtual DOM is a concept where a lightweight copy of the actual DOM is created in memory.

• When changes are made to the virtual DOM, React compares it with the actual DOM to identify the minimal number of updates needed.

• This process helps in optimizing performance by reducing the number of actual DOM manipulations.

• Example: When a use...read more
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Q2. How do you implement passwordless system
Ans. 
Implementing passwordless system involves using alternative authentication methods.
• Use email or SMS verification codes

• Implement biometric authentication

• Utilize hardware security keys

• Implement OAuth or OpenID Connect for single sign-on

• Leverage FIDO2 standards for passwordless authentication
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Q1. What to do for a cookieless system
Ans. 
To create a cookieless system, use alternative methods like local storage or URL parameters for tracking user data.
• Use local storage to store user data on the client side

• Utilize URL parameters to pass data between pages

• Implement server-side session management for user authentication

• Consider using JSON Web Tokens (JWT) for secure data transmission
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Q2. Explain in detail S.O.L.I.D principles
Ans. 
S.O.L.I.D principles are a set of five design principles in object-oriented programming to make software designs more understandable, flexible, and maintainable.
• Single Responsibility Principle (SRP) - A class should have only one reason to change.

• Open/Closed Principle (OCP) - Software entities should be open for extension but closed for modification.

• Liskov Substitution Principle (LSP) - Objects of a superclass should b...read more
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Round duration - 90 minutes
Round difficulty - Easy

It happens in very friendly manner.

Q1. 
Paths in a Matrix Problem Statement
Given an 'M x N' matrix, print all the possible paths from the top-left corner to the bottom-right corner. You can only move either right (from (i,j) to (i,j+1)) or dow...read more
Ans. 
Print all possible paths from top-left to bottom-right in a matrix by moving only right or down.
• Use backtracking to explore all possible paths from top-left to bottom-right in the matrix.

• At each cell, recursively explore moving right and down until reaching the bottom-right corner.

• Keep track of the current path and add it to the result when reaching the destination.
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Q2. Can you create 2 tables in SQL and perform different operations on them?
Ans. 
Yes, I can create 2 tables in SQL and perform operations like INSERT, SELECT, UPDATE, and DELETE.
• Create Table 1: CREATE TABLE employees (id INT, name VARCHAR(50), salary DECIMAL(10,2));

• Create Table 2: CREATE TABLE departments (dept_id INT, dept_name VARCHAR(50));

• Insert Data: INSERT INTO employees VALUES (1, 'John Doe', 50000);

• Select Data: SELECT * FROM employees WHERE salary > 40000;

• Update Data: UPDATE employees SET...read more
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Round duration - 90 minutes
Round difficulty - Medium

No problem occur very friendly environment.

Round duration - 90 minutes
Round difficulty - Hard

Q1. 
Rat in a Maze Problem Statement
You need to determine all possible paths for a rat starting at position (0, 0) in a square maze to reach its destination at (N-1, N-1). The maze is represented as an N*N ma...read more
Ans. 
Find all possible paths for a rat in a maze from source to destination.
• Use backtracking to explore all possible paths in the maze.

• Keep track of visited cells to avoid revisiting them.

• Explore all possible directions (up, down, left, right) from each cell.

• Add the current direction to the path and recursively explore further.

• If the destination is reached, add the path to the list of valid paths.
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Had DSA and aptitude questions

Q1. DSA a questions, Database Questions
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Q1. 5 min question and answers about company
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