HiLabs Full Stack Developer Interview Questions and Answers

Q1. Explain primary key in dbms
Ans. 
Primary key is a unique identifier for each record in a database table.
• Primary key ensures data integrity and helps in faster data retrieval.

• It cannot have null values and must be unique for each record.

• It can be a single column or a combination of columns.

• Examples of primary keys are social security number, email address, etc.
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Q2. Memory management concept names in os
Ans. 
Memory management concepts in OS
• Virtual memory

• Page replacement algorithms

• Memory allocation

• Memory protection

• Swapping

• Fragmentation
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Basic Logical programs

Q1. Explain laravel Structure
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Q2. Database migration
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Q3. What is indexing in database
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Q4. What is controller ,What is Route
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Q1. Why you leave your previous Company
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Q2. What is your role in previous company
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Java, spring,springboot

Logical reasoning, problem solving

Q1. Tell me about your self
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Q2. Family background
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2 Query question and 3 coding questions

Q1. Basic oops , Java script and Networking questions.
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Q2. What is object orienteered programming.
Ans. 
Object oriented programming is a programming paradigm based on the concept of objects, which can contain data and code.
• Objects are instances of classes, which define the structure and behavior of the objects.

• Encapsulation, inheritance, and polymorphism are key principles of object oriented programming.

• Example: Java, C++, Python are popular languages that support object oriented programming.
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Q3. Different Events in java script
Ans. 
Events in JavaScript are actions or occurrences that happen in the browser that the code can respond to.
• Events can be triggered by user actions (like clicking a button), browser actions (like page load), or system events (like a timer expiring)

• Event listeners are used to listen for and respond to events

• Common events include click, mouseover, keydown, submit, etc.
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Q4. Event listeners
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Project , coding question, DBMS

Q1. Basic personal details
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2 DSA questions Both are from DP

Q1. 2 Questions , 1 is DSA
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Q2. Second question is Puzzle
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Q1. Implement tail f
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Hard level DSA Graph question asked and OOPS