Quest Global Interview Questions and Answers for Freshers

Logical and quants like percentage, clock hand, coding decoding

Q1. Tell about project
Ans. 
Developed a web-based inventory management system for a retail company
• Used HTML, CSS, and JavaScript for front-end development

• Utilized PHP and MySQL for back-end development

• Implemented features such as product tracking, order processing, and reporting

• Collaborated with team members to ensure project completion within deadline
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Q2. Pattern printing
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Q3. Print any python program you know
Ans. 
Print 'Hello, World!' in Python
• Use the print() function to display text on the screen

• Enclose the text in single or double quotes
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Asked basics of Javascript and ReactJS and data flow

Q1. What is react and concept of Virtual dom and real dom
Ans. 
React is a JavaScript library for building user interfaces. Virtual DOM is a lightweight copy of the Real DOM, used for efficient updates.
• React is a popular JavaScript library for building user interfaces.

• Virtual DOM is a lightweight copy of the Real DOM, used for efficient updates.

• When changes are made in React, the Virtual DOM is updated first, then compared to the Real DOM to minimize actual DOM manipulation.
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Q1. Asked about previous project.
Ans. You need to describe your current project
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Q2. Java 8 stream question (sorting,skip) sql query, exception,question from collection framework,different between hashmap and concurrent map
Ans. You need to study all these things
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Q3. Asked to write sql queries
Ans. 
SQL queries are used to interact with databases, allowing data retrieval, manipulation, and management.
• SELECT statement: Used to retrieve data from a database. Example: SELECT * FROM employees;

• JOIN clause: Combines rows from two or more tables based on a related column. Example: SELECT a.name, b.department FROM employees a JOIN departments b ON a.dept_id = b.id;

• WHERE clause: Filters records based on specified condition...read more
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Q4. Asked to write one custom exception class
Ans. 
A custom exception class allows for specific error handling in applications, enhancing clarity and control over error management.
• Define a class that extends the built-in Exception class.

• Include a constructor to initialize error messages and other relevant data.

• Override the __str__ method to provide a user-friendly error message.

• Example: class CustomError(Exception): pass

• Usage: raise CustomError('This is a custom error ...read more
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Q5. Asked difference between finally,finalize keyword in java
Ans. 
In Java, 'finally' is a block for cleanup, while 'finalize' is a method for garbage collection.
• 'finally' is used in try-catch blocks to execute code regardless of exceptions.

• Example of 'finally': try { // code that may throw exception } catch (Exception e) { // handle exception } finally { // cleanup code }

• 'finalize' is a method in the Object class that is called by the garbage collector before an object is...read more
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Basic php questions and laravel framework