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I applied via Referral and was interviewed in Jul 2024. There were 2 interview rounds.
Veneer is a thin layer of wood used for decorative purposes, while mica is a mineral often used in electrical insulation and heat resistance.
Veneer is a thin layer of wood sliced from a log and used to cover surfaces for decorative purposes.
Mica is a mineral that is often used in electrical insulation due to its heat-resistant properties.
Veneer is commonly used in furniture making, while mica is used in electronics and
There are various types of tiles such as ceramic, porcelain, glass, mosaic, and natural stone.
Ceramic tiles are made from clay and are popular for their durability and versatility.
Porcelain tiles are also made from clay but are denser and less porous than ceramic tiles.
Glass tiles are known for their unique appearance and are often used as accent pieces.
Mosaic tiles are small pieces of tile arranged in a pattern, often...
The amount of paint needed for a 10*10 sqft room depends on the type of paint and number of coats.
Calculate the total square footage of the room (10*10 = 100 sqft)
Determine the coverage area per litre of the specific paint being used (e.g. 200 sqft per litre)
Divide the total square footage by the coverage area per litre to get the amount of paint needed (100 sqft / 200 sqft per litre = 0.5 litres)
Consider the number of...
The amount of wall putty needed for a 10*10 sqft area depends on the thickness of the putty layer applied.
The amount of wall putty needed is typically calculated based on the thickness of the putty layer (e.g. 1mm, 2mm, etc.)
The density of the wall putty being used also affects the amount required
It is recommended to consult the manufacturer's guidelines for the specific product being used
The process of waterproofing involves applying materials to prevent water from penetrating a surface or structure.
Identify areas that need waterproofing such as basements, roofs, or foundations
Choose appropriate waterproofing materials such as sealants, membranes, or coatings
Prepare the surface by cleaning and repairing any cracks or damage
Apply the waterproofing material according to manufacturer's instructions
Ensure ...
Suspended ceilings are often considered the best due to their versatility, ease of installation, and acoustic properties.
Suspended ceilings are versatile and can accommodate various lighting fixtures, HVAC systems, and other utilities.
They are easy to install and allow for easy access to the space above for maintenance purposes.
Suspended ceilings can improve acoustics in a room by reducing noise levels and echoing.
Popu...
Bed cover aposty is used to protect the bed from dust, spills, and wear and tear.
Bed cover aposty helps to keep the bed clean and hygienic
It can also add a decorative touch to the bedroom
Different materials like cotton, polyester, or silk can be used for bed covers
Bed cover aposty can be easily removed and washed for maintenance
Some examples of bed cover aposty include duvet covers, quilts, and bedspreads
I am looking for a competitive salary that reflects my experience and skills in the industry.
Research industry standards for Project Engineers in the local area
Consider my level of experience and qualifications
Open to negotiation based on benefits package offered
Yes, I am familiar with object-oriented programming concepts and have experience with Python.
Yes, I am familiar with object-oriented programming concepts such as classes, objects, inheritance, and polymorphism.
I have experience using Python for various projects and tasks.
I understand the principles of encapsulation, abstraction, and inheritance in Python.
I appeared for an interview before Nov 2023.
An IP address is a unique numerical label assigned to each device connected to a computer network.
IP addresses are used to identify and locate devices on a network
There are two types of IP addresses - IPv4 and IPv6
IPv4 addresses are written in the format xxx.xxx.xxx.xxx, where each 'xxx' can range from 0 to 255
IPv6 addresses are written in a longer format with hexadecimal characters
Switching is the process of forwarding data packets between devices on a network based on the destination address.
Switching operates at Layer 2 of the OSI model
Switches use MAC addresses to determine where to forward data packets
Switching increases network efficiency by reducing unnecessary traffic
Examples of switches include Cisco Catalyst series and Juniper EX series
Yes, I have configured access points in various network setups.
Configured access points for wireless network connectivity
Set up security protocols like WPA2 for access points
Optimized access point placement for maximum coverage
Troubleshooted connectivity issues with access points
The length of patch cords should be kept as short as possible to minimize signal loss and interference.
Keep patch cord length to a minimum to reduce signal loss and interference
Use the appropriate length based on the distance between devices
Avoid coiling excess length of patch cords as it can cause signal degradation
Consider using pre-terminated patch cords to ensure optimal length
Cascade and master slave switching are methods used in networking to connect multiple switches together for improved performance and redundancy.
Cascade switching involves connecting multiple switches in a linear fashion, where each switch is connected to the previous one.
Master-slave switching involves designating one switch as the master, which controls the operation of the slave switches in the network.
Stack switchin...
I applied via Naukri.com
Unique Enterprises interview questions for popular designations
posted on 17 Dec 2021
I applied via Naukri.com and was interviewed in Jun 2021. There was 1 interview round.
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I appeared for an interview before Apr 2021.
Round duration - 90 minutes
Round difficulty - Medium
This round had 3 coding questions of Medium to Hard level of difficulty.
Given an integer N
representing the number of pairs of parentheses, find all the possible combinations of balanced parentheses using the given number of pairs.
Generate all possible combinations of balanced parentheses for a given number of pairs.
Use recursion to generate all possible combinations of balanced parentheses.
Keep track of the number of open and close parentheses used in each combination.
Return the valid combinations as an array of strings.
You are given a long type array/list ARR
of size N
, representing an elevation map. The value ARR[i]
denotes the elevation of the ith
bar. Your task is to determine th...
Calculate the total amount of rainwater that can be trapped between given elevations in an array.
Iterate through the array and calculate the maximum height on the left and right of each bar.
Calculate the amount of water that can be trapped at each bar by taking the minimum of the maximum heights on the left and right.
Sum up the trapped water at each bar to get the total trapped water for the entire array.
You are given a grid containing oranges where each cell of the grid can contain one of the three integer values:
Find the minimum time required to rot all fresh oranges adjacent to rotten oranges.
Create a queue to store the coordinates of rotten oranges and perform BFS to rot adjacent fresh oranges.
Track the time taken to rot all fresh oranges and return -1 if not all fresh oranges can be rotten.
Update the grid with the new state of oranges after each second.
Handle edge cases such as empty grid or no fresh oranges present.
Example...
Round duration - 60 Minutes
Round difficulty - Medium
This was a standard DS/Algo round where I was given 2 questions to solve under 60 minutes. I was able to come up with the optimal approach for both the questions and then at the end of the interview I was also asked the famous Die Hard Water Puzzle.
Design a queue data structure following the FIFO (First In First Out) principle using only stack instances.
Your task is to complete predefined functions t...
Implement a queue using stacks following FIFO principle.
Use two stacks to simulate a queue.
For enQueue operation, push elements onto stack1.
For deQueue operation, if stack2 is empty, pop all elements from stack1 and push onto stack2, then pop from stack2.
For peek operation, if stack2 is empty, pop all elements from stack1 and push onto stack2, then return top of stack2.
For isEmpty operation, check if both stack1 and st...
You are provided with 'N' intervals, each containing two integers denoting the start time and end time of the interval.
Your task is to merge all overlapping intervals a...
Merge overlapping intervals and return sorted list of merged intervals by start time.
Sort the intervals based on start time.
Iterate through intervals and merge overlapping ones.
Return the merged intervals in sorted order.
Round duration - 60 Minutes
Round difficulty - Medium
This round had 2 coding questions - first one related to Binary Tree and the second one was a simple question from Bit Manipulation. This was followed by some questions from OOPS.
You are given a Binary Tree, and you need to determine the length of the diameter of the tree.
The diameter of a binary tree is the length of the longest path betwe...
The task is to find the diameter of a binary tree, which is the length of the longest path between any two end nodes in the tree.
Traverse the tree to find the longest path between two nodes.
Keep track of the maximum diameter found during traversal.
The diameter may not necessarily pass through the root node.
Consider both left and right subtrees while calculating the diameter.
Example: For input 1 2 3 4 -1 5 6 -1 7 -1 -1
Determine if it is possible to reorder the digits of a given integer 'N' such that the resulting number is a power of two. The leading digit must not be zero.
The fir...
The problem involves determining if it is possible to reorder the digits of a given integer to form a power of 2.
Iterate through all possible permutations of the digits of the given integer.
Check if any of the permutations form a power of 2.
Return 1 if a valid permutation is found, else return 0.
Advantages of OOP include code reusability, modularity, and easier maintenance.
Code reusability: Objects can be reused in different parts of the program, reducing redundancy.
Modularity: OOP allows for breaking down complex problems into smaller, more manageable parts.
Easier maintenance: Changes to one part of the codebase do not necessarily affect other parts, making maintenance easier.
Encapsulation: Data hiding and ab...
Access specifiers define the level of access to class members in Object-Oriented Programming.
Access specifiers include public, private, protected, and default
Public members are accessible from outside the class
Private members are only accessible within the class
Protected members are accessible within the class and its subclasses
Default access is when no access specifier is specified
Round duration - 30 Minutes
Round difficulty - Easy
This was my last round and I hoped it to go good just like the other rounds. The interviewer was very straight to point
and professional. The interview lasted for 30 minutes.
Tip 1 : Must do Previously asked Interview as well as Online Test Questions.
Tip 2 : Go through all the previous interview experiences from Codestudio and Leetcode.
Tip 3 : Do at-least 2 good projects and you must know every bit of them.
Tip 1 : Have at-least 2 good projects explained in short with all important points covered.
Tip 2 : Every skill must be mentioned.
Tip 3 : Focus on skills, projects and experiences more.
Queue can be implemented using two stacks by maintaining the order of elements in the stacks.
Create two stacks, let's call them stack1 and stack2
When an element is enqueued, push it to stack1
When an element is dequeued, pop all elements from stack1 and push them to stack2
Pop the top element from stack2 and return it as the dequeued element
If stack2 is empty, repeat step 3
To get the front element of the queue, peek the
Left join returns all records from left table and matching records from right table. Full outer join returns all records from both tables.
Left join is used to combine two tables based on a common column.
In left join, all records from the left table are returned along with matching records from the right table.
If there is no match in the right table, NULL values are returned.
Example: SELECT * FROM table1 LEFT JOIN table...
Magic functions are special methods in PHP that start with __. Autoloading is a way to automatically load classes.
Magic functions are used to handle certain events in PHP, such as object creation or property access.
Autoloading allows PHP to automatically load classes when they are needed, without requiring manual includes.
Magic functions can be used in conjunction with autoloading to dynamically load classes or handle
Given three sorted arrays, find common elements.
Create three pointers to traverse each array
Compare the elements at the pointers and move the pointer of the smallest element
If all pointers point to the same element, add it to the result and move all pointers
Repeat until any pointer reaches the end of its array
Check if a number is a power of 2 or not.
A power of 2 has only one bit set in its binary representation.
Use bitwise AND operator to check if the number is a power of 2.
If n is a power of 2, then n & (n-1) will be 0.
I applied via Referral
Event bubbling is the propagation of an event from the innermost child element to the outermost parent element.
Events triggered on a child element will also trigger on its parent elements
The event travels up the DOM tree until it reaches the document object
Can be stopped using event.stopPropagation()
Can be useful for event delegation
The .on('click',function() is a more flexible method than .click(function())
The .on() method can handle multiple events and selectors
The .click() method can only handle one event and one selector
The .on() method can also handle dynamically added elements
The .click() method cannot handle dynamically added elements
Function to check if two strings are anagram or not
Create two character arrays from the strings
Sort the arrays
Compare the sorted arrays
Function to determine the order of integers in an array.
Check first and last element to determine if increasing or decreasing
Check for inflection point to determine if order changes
Return order type as string
Optimize images, minify code, reduce HTTP requests, use caching, and lazy loading.
Optimize images using compression and appropriate file formats
Minify code to reduce file size and improve load times
Reduce HTTP requests by combining files and using sprites
Use caching to store frequently accessed data locally
Implement lazy loading to defer loading of non-critical resources
Design a database schema for a movie site with user ratings and recommendations.
Create tables for movies, users, ratings, and recommendations
Use foreign keys to link tables
Include columns for movie genre and user watch history
Algorithm for recommendations can use user watch history and ratings to suggest similar movies
Function to simulate dice roll with equal probability without using random function
Use a toss function that returns either 0 or 1 with equal probability
Call the toss function 3 times and convert the result to a binary number
If the binary number is greater than 0 and less than or equal to 6, return it
If the binary number is greater than 6, repeat the process
Query to fetch duplicate email from table
Use GROUP BY and HAVING clause to filter out duplicates
SELECT email, COUNT(*) FROM table_name GROUP BY email HAVING COUNT(*) > 1;
This will return all the duplicate emails in the table
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