Maveric Systems Senior Software Engineer Interview Questions and Answers for Freshers

Q1. They specifically didn’t asked any questions by looking at my strong resume but just asked me if to come Hyderabad for training of a month
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Q1. Basic javascript questions and basic node js questions
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Q2. Basic programming questions
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Q1. They will check In depth architecture understanding of the products you have worked
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Q2. Test your Critical thinking by asking how you manage the load and multiple systems interaction, asyc programming
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Q1. Salary expectation, and attitude and behaviour test
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Q1. Explain in details about Oops concepts
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OOPs concepts are the fundamental principles of object-oriented programming.
• Encapsulation - binding data and functions together

• Inheritance - creating new classes from existing ones

• Polymorphism - ability of objects to take on multiple forms

• Abstraction - hiding implementation details from users
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Q1. Types of Design Patterns and explain any one
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Design patterns are reusable solutions to common software problems. One example is the Singleton pattern.
• Creational patterns: Singleton, Factory, Abstract Factory, Builder

• Structural patterns: Adapter, Bridge, Composite, Decorator, Facade, Flyweight, Proxy

• Behavioral patterns: Chain of Responsibility, Command, Interpreter, Iterator, Mediator, Memento, Observer, State, Strategy, Template Method, Visitor

• Singleton pattern e...read more
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Basic Maths reasoning, general question genre jdnfk hdsfjks kjhbdfk

Q1. Why you change the company
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Q1. Questions on ref cursors and bulk collect
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Q2. Nested table record type variable creation and their syntax.
Ans. 
Nested table record types in PL/SQL allow complex data structures for efficient data handling.
• A nested table is a collection type that can hold an arbitrary number of elements.

• Syntax for creating a nested table type: `CREATE TYPE nested_table_type AS TABLE OF data_type;`

• To declare a variable of a nested table type: `DECLARE my_nested_table nested_table_type;`

• You can initialize a nested table using: `my_nested_table := ...read more
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Q3. Triggers and procedures and packages differences.
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Triggers respond to database events; procedures are reusable code blocks; packages group related procedures/functions.
• Triggers are automatically executed in response to specific events (e.g., INSERT, UPDATE).

• Example of a trigger: A trigger that logs changes to a table whenever a row is updated.

• Procedures are named blocks of code that can be executed explicitly by calling them.

• Example of a procedure: A procedure that ca...read more
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Q4. ACID properties
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ACID properties ensure reliable transactions in databases: Atomicity, Consistency, Isolation, Durability.
• Atomicity: Transactions are all-or-nothing. Example: If a bank transfer fails, both accounts remain unchanged.

• Consistency: Transactions bring the database from one valid state to another. Example: A transaction must not violate any database rules.

• Isolation: Concurrent transactions do not affect each other. Example: ...read more
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Q5. Materialized views and db links
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Q6. Different types of cursors
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Cursors are database objects used to retrieve and manipulate data row by row.
• 1. Implicit Cursors: Automatically created by SQL for single SQL statements. Example: SELECT * FROM employees;

• 2. Explicit Cursors: Defined by the programmer for complex queries. Example: DECLARE cursor_name CURSOR FOR SELECT * FROM orders;

• 3. Forward-only Cursors: Can only move forward through the result set. Example: Used for simple read opera...read more
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Q7. Autonomous transaction and merge statement
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Q1. Technical round with coding test
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Q1. Project explanation
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Q1. Gaps if there any and salary discussions
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Q1. Basic questions on Javascript like closure, event loop,hoisting and some coding questions on map,filter, reduce
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Q2. Basic conceptual questions on React, redux
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Q1. Coding questions on JS and React
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Q1. Salary Expectation
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Q1. What are closures
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Closures are functions that have access to variables from their containing scope even after the scope has closed.
• Closures allow functions to access variables from their outer function even after the outer function has finished executing.

• They are commonly used in event handlers, callbacks, and asynchronous programming.

• Closures help in maintaining state in functional programming.
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Q2. What is virtual DOM
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Virtual DOM is a lightweight copy of the actual DOM used for efficient updates in web development.
• Virtual DOM is a concept used in frameworks like React to improve performance by minimizing actual DOM manipulations.

• When changes are made to the virtual DOM, a comparison is done with the actual DOM to determine the minimal updates needed.

• This approach reduces the number of costly DOM operations, resulting in faster rende
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Q3. What are the data types in JS
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Data types in JavaScript include number, string, boolean, object, function, undefined, and null.
• Number - represents numeric data, e.g. 10, 3.14

• String - represents textual data, e.g. 'hello', '123'

• Boolean - represents true or false values, e.g. true, false

• Object - represents complex data structures, e.g. { key: 'value' }

• Function - represents executable code, e.g. function() { }

• Undefined - represents a variable that has ...read more
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Q1. Write react code for counter
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React code for a simple counter
• Create a functional component for the counter

• Use useState hook to manage the count state

• Render the count value and buttons to increment and decrement the count
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Q1. Salary discussion
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