Sense Talent Labs Software Developer Interview Questions and Answers

Q1. Rest Apis questions
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Q1. Core java and OOPS and LLD
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1 hour , dsa, hackerearth, medim to hard

Q1. Dsa question was asked in it
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Q2. Questions related to resume was asked
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Q1. Salary expectations
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Q1. Introduction self
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Q1. Internal working of Hash Map
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Hash Map is a data structure that stores key-value pairs and uses a hash function to map keys to their corresponding values.
• Hash Map uses a hash function to determine the index of the key-value pair in the underlying array.

• Collisions can occur when multiple keys hash to the same index, which can be resolved using techniques like chaining or open addressing.

• Hash Map typically has a load factor threshold to determine whe...read more
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Comprehensive questions

Java strings programs

Basic Apti questions, Logic Questions, Puzzle Questions

Q1. Sorting Techniques
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Q2. Number Pattern Printing Question
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Q3. Linked List Implementation
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Linked list is a data structure where each element points to the next element in the sequence.
• Nodes contain data and a reference to the next node

• Insertion and deletion can be done efficiently

• Traversal starts from the head node
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Q4. Diff btw 32 bit and 64 bit OS
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32-bit OS can only address up to 4GB of RAM, while 64-bit OS can address much more.
• 32-bit OS can only address up to 4GB of RAM, while 64-bit OS can address much more

• 64-bit OS allows for larger file sizes and better performance

• 64-bit OS is more secure due to enhanced security features

• 64-bit OS is required to run certain modern software and games
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Q5. Puzzle of 3 jar
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Q6. Reverse a String
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Reverse a given string
• Use a loop to iterate through the characters of the string

• Append each character to a new string in reverse order

• Return the reversed string
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Find out a string is palindrome or not

Q1. ACID properties
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ACID properties are a set of properties that guarantee database transactions are processed reliably.
• ACID stands for Atomicity, Consistency, Isolation, Durability

• Atomicity ensures that all operations in a transaction are completed successfully or none at all

• Consistency ensures that the database remains in a consistent state before and after the transaction

• Isolation ensures that transactions are executed independently of...read more
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Q2. Event loop in node js
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Event loop in Node.js manages asynchronous operations by executing callback functions when certain events occur.
• Event loop is responsible for handling I/O operations, timers, and callbacks in Node.js

• It allows Node.js to perform non-blocking operations efficiently

• Event loop continuously checks the event queue and executes callback functions when events are triggered
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Q3. Trigger and cursor
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Q4. Primary vs foreign vs unique key
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Primary key uniquely identifies a record, foreign key links to a primary key in another table, unique key ensures uniqueness of a column or set of columns.
• Primary key: uniquely identifies each record in a table (e.g. employee_id in an employees table)

• Foreign key: links to a primary key in another table to establish a relationship (e.g. department_id in an employees table linking to department_id in a departments table)

• ...read more
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Q5. Project related Questions and whats your job role in that project
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Q6. Variable hoisting in js
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Variable hoisting is a behavior in JavaScript where variable declarations are moved to the top of their scope during compilation.
• Variable declarations are hoisted to the top of their function or global scope.

• Only the declarations are hoisted, not the initializations.

• Hoisting allows you to use a variable before it is declared, but it is best practice to declare variables at the top of the scope.

• Example: console.log(myV
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Q7. Function closure in js
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Function closure in JavaScript allows a function to access variables from its outer scope even after the outer function has finished executing.
• Function closures occur when a function is defined within another function and the inner function has access to the outer function's variables.

• Closures are commonly used to create private variables and functions in JavaScript.

• Example: function outerFunction() { let outerVar = 'I...read more
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Q8. Shallow vs deep copy in js
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Shallow copy creates a new object but references the same nested objects, while deep copy creates a new object with copies of all nested objects.
• Shallow copy only copies the top-level object, not the nested objects.

• Deep copy creates new copies of all nested objects, ensuring they are independent.

• In JavaScript, shallow copy can be achieved using Object.assign or spread operator, while deep copy can be achieved using JSO
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