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Process is a series of actions or steps taken in order to achieve a particular end.
Process involves a sequence of tasks or activities.
It can be a set of instructions followed to accomplish a goal.
Examples include software development process, manufacturing process, and decision-making process.
I applied via Approached by Company and was interviewed before Nov 2021. There were 2 interview rounds.
I applied via Approached by Company and was interviewed before Apr 2021. There were 2 interview rounds.
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I applied via Campus Placement
Had some basic SQL, Networking and Linux multiple choice questions along with two paragraphs at the end
Command to list CPUs in Linux system
Use the 'lscpu' command to list detailed information about CPUs
Use the 'nproc' command to display the number of processing units available
Use the 'cat /proc/cpuinfo' command to view information about each CPU core
To copy contents of a file to another file, you can use file handling methods in programming languages.
Open the source file in read mode and the destination file in write mode
Read the contents of the source file and write them to the destination file
Close both files after the copying process is complete
To rename a file, use the 'mv' command in the terminal or use a file manager with a rename option.
In the terminal, use the 'mv' command followed by the current file name and the new file name.
Example: mv oldfile.txt newfile.txt
In a file manager, right-click on the file and select the 'Rename' option.
Enter the new file name and press Enter.
Command to check free disk space
Use the 'df' command to check free disk space
The '-h' option displays the output in human-readable format
The '-T' option shows the filesystem type
The '-x' option excludes specific filesystem types
The '-t' option filters the output based on filesystem type
The OSI Model is a conceptual framework that standardizes the functions of a communication system into seven layers.
The OSI Model stands for Open Systems Interconnection Model.
It was developed by the International Organization for Standardization (ISO) in 1984.
The model is divided into seven layers: Physical, Data Link, Network, Transport, Session, Presentation, and Application.
Each layer has a specific function and in...
NoSQL is a non-relational database that provides flexible schema and horizontal scalability, while SQL is a relational database with structured schema and vertical scalability.
NoSQL databases are schema-less and can handle unstructured data.
SQL databases use structured query language and have predefined schemas.
NoSQL databases are horizontally scalable, allowing for easy distribution of data across multiple servers.
SQL...
Command to check free memory space
Use the 'free' command to check free memory space
The 'free' command displays the total, used, and free memory space in the system
It also shows the amount of memory used for buffers and cache
The 'free' command can be used with options like '-h' for human-readable output
To copy files to a remote machine, use a file transfer protocol like SCP or SFTP.
Use SCP (Secure Copy) command to copy files between local and remote machines
Example: scp /path/to/local/file username@remote:/path/to/destination
Use SFTP (Secure File Transfer Protocol) for interactive file transfers
Example: sftp username@remote, then use put command to upload files
I applied via Naukri.com and was interviewed in Dec 2021. There were 2 interview rounds.
CloudWatch is a monitoring service for AWS resources. Jira is a project management tool.
CloudWatch is used to collect and track metrics, collect and monitor log files, and set alarms.
Jira is used for issue tracking, bug tracking, and project management.
CloudWatch can be used to monitor EC2 instances, RDS DB instances, and Elastic Load Balancers.
Jira can be used to manage software development projects, track bugs and is
Jenkins is a CI/CD tool, Shell scripting automates tasks, Cron job schedules tasks, System files store configuration data.
Jenkins is a popular CI/CD tool used for continuous integration and deployment
Shell scripting is a way to automate tasks on a Unix/Linux system using command line interface
Cron job is a scheduling utility in Unix/Linux systems used to schedule tasks at specific times
System files are configuration fi...
Apache is a web server while Nagios is a monitoring tool.
Apache is used to serve web pages and applications.
Nagios is used to monitor the health and performance of servers, applications, and services.
Apache can be used with Nagios to monitor web servers and applications.
Apache is open source and widely used, while Nagios is also open source but less popular.
I applied via Campus Placement
I am an avid traveler and have visited over 20 countries
I love experiencing new cultures and trying new foods
I have backpacked through Europe and Asia
I have volunteered in orphanages in Cambodia and Nepal
Mobile advertising platform
Adtech
Mobile marketing
App monetization
Maximum sub sequence sum in an array
Use Kadane's algorithm
Initialize max_so_far and max_ending_here to 0
Iterate through the array and update max_ending_here and max_so_far
Return max_so_far
Endianness refers to the byte order of a system. It determines how multi-byte data types are stored in memory.
Little-endian systems store the least significant byte first, while big-endian systems store the most significant byte first.
Endianness can affect the way data is transmitted between systems.
To determine the endianness of a system, you can use the byte order mark (BOM) or write a test program that checks the by...
Sort an array of 0's and 1's only.
Use two pointers, one at the beginning and one at the end of the array.
Swap 0's from the beginning with 1's from the end until the pointers meet.
Alternatively, use a counting sort algorithm to count the number of 0's and 1's and then reconstruct the array.
Heaps are data structures used to efficiently find the maximum or minimum element in a collection.
Max heap: parent nodes are always greater than or equal to child nodes
Min heap: parent nodes are always smaller than or equal to child nodes
Heaps are commonly used in priority queues and sorting algorithms
Heap operations include insert, delete, and extract max/min
Example: An array [3, 8, 2, 5, 1, 4, 6] can be represented a
Find 3 numbers in an array where a+b=c.
Loop through the array and check for all possible combinations of a and b.
Use a hash table to store the values of a and b, and check if c is present in the hash table.
Sort the array and use two pointers to find a and b, and then check if their sum equals c.
Algorithms for manipulating arrays and strings in coding
Use sorting algorithms like quicksort and mergesort for arrays
Use string manipulation functions like substring and replace for strings
Use dynamic programming for optimizing solutions to array and string problems
Designing a large scale Ad Server
Use distributed systems for scalability
Implement caching for faster ad delivery
Ensure high availability and fault tolerance
Use real-time bidding for efficient ad placement
Implement fraud detection mechanisms
Ensure compliance with privacy regulations
I applied via Job lever and was interviewed before Sep 2021. There were 2 interview rounds.
Easy leetcode code 2 questions , HTML5 css javascript simple screen design
Implementing a shuffle function for a playlist of songs
Create a new empty playlist
Randomly select a song from the original playlist and add it to the new playlist
Remove the selected song from the original playlist
Repeat until all songs have been added to the new playlist
Return the new shuffled playlist
Memory leak is a situation where a program fails to release memory it no longer needs.
Memory leaks can cause a program to consume more and more memory over time, eventually leading to crashes or other issues.
Memory leaks can be caused by programming errors such as not freeing memory after it is no longer needed.
Tools like valgrind can be used to detect memory leaks in C and C++ programs.
Examples of memory leaks include...
Arrays have fixed size and can lead to memory wastage and performance issues.
Arrays have a fixed size and cannot be resized dynamically.
Inserting or deleting elements in an array can be time-consuming.
Arrays can lead to memory wastage if they are not fully utilized.
Arrays can cause performance issues if they are too large and need to be traversed frequently.
Arrays can also be prone to buffer overflow attacks.
Example: A...
Function to hide text on mouse click in JavaScript
Create a function that takes an element as input
Add an event listener to the element for a mouse click
Toggle the element's display property between 'none' and its original value
Find two elements in an unsorted array whose sum is equal to a given number x.
Use a hash table to store the difference between x and each element in the array.
Iterate through the array and check if the current element is in the hash table.
Return the pair of elements that add up to x.
BST stands for Binary Search Tree, a data structure used for efficient searching and sorting operations.
BST is a tree-like data structure where each node has at most two children.
The left child of a node contains a value less than the parent node, while the right child contains a value greater than the parent node.
BST allows for efficient searching and sorting operations with a time complexity of O(log n).
Examples of a...
Number of possible BSTs with 2 and 3 nodes.
For 2 nodes, only 2 BSTs are possible.
For 3 nodes, 5 BSTs are possible.
Number of BSTs can be calculated using Catalan numbers formula.
Catalan(2) = 2, Catalan(3) = 5.
Answering the question about possible trees with two and three nodes.
For two nodes, there is only one possible tree.
For three nodes, there are three possible trees.
The formula for calculating the number of possible trees with n nodes is (2n-3)!!.
The double exclamation mark represents the double factorial function.
The double factorial function is defined as n!! = n(n-2)(n-4)...(1 or 2).
B+ trees are balanced trees used for indexing and searching large amounts of data.
B+ trees are similar to binary search trees but have multiple keys per node.
They are commonly used in databases and file systems.
B+ trees have a high fanout, reducing the number of disk accesses required for searching.
They are also self-balancing, ensuring efficient performance even with large amounts of data.
Example: In a database, a B+ ...
Yes, I have a few questions.
Can you tell me more about the team I'll be working with?
What is the company culture like?
What are the biggest challenges the team is currently facing?
Can you walk me through the development process for a typical project?
What opportunities are there for professional growth and development?
I prefer hash tables for their constant time lookup and insertion.
Hash tables are efficient for storing and retrieving data.
They have constant time complexity for both insertion and lookup.
They can be implemented using arrays or linked lists.
Examples include Python's dictionary and Java's HashMap.
Yes, we can implement a stack using two queues.
Push operation: Enqueue the element to the first queue.
Pop operation: Dequeue all elements from the first queue and enqueue them to the second queue until the last element. Dequeue and return the last element. Swap the names of the queues.
Top operation: Same as pop operation but don't dequeue the last element.
Example: Push 1, 2, 3. Queue 1: 1 2 3. Queue 2: empty. Pop opera...
Find minimum no of platforms required to avoid collision between trains based on their arrival and departure times.
Sort both arrays in ascending order
Initialize platform count and max count to 1
Loop through both arrays and compare arrival and departure times
If arrival time is less than or equal to departure time, increment platform count
Else, decrement platform count
Update max count if platform count is greater than ma
JVM stands for Java Virtual Machine. It is an abstract machine that provides a runtime environment for Java programs.
JVM is responsible for interpreting the compiled Java code and executing it.
It provides platform independence by converting bytecode into machine-specific code.
JVM has various components like class loader, bytecode verifier, and execution engine.
Compiler converts source code into bytecode, while JVM exec...
I am a software engineer with experience in developing web applications and a passion for learning new technologies.
Experienced in developing web applications using technologies such as Java, Spring, and Angular
Passionate about learning new technologies and keeping up with industry trends
Strong problem-solving skills and ability to work in a team environment
Completed a Bachelor's degree in Computer Science from XYZ Uni
PayTM is an Indian e-commerce payment system and digital wallet company.
PayTM was founded in 2010 by Vijay Shekhar Sharma.
It started as a mobile recharge and bill payment platform.
PayTM has expanded to offer services like online shopping, movie ticket booking, and travel bookings.
It also offers a digital wallet that can be used to pay for various services and products.
PayTM has over 350 million registered users and is ...
I would like to add a feature for splitting bills among friends.
The feature would allow users to split bills for movies, dinners, etc.
Users can select friends from their contact list and split the bill equally or unequally.
The app would send a notification to the selected friends to pay their share.
The feature would make it easier for users to split expenses and avoid awkward conversations.
It would also encourage more
My favourite app is Spotify. I would like to see improvements in the algorithm for personalized playlists.
Improved algorithm for personalized playlists
Better integration with social media platforms
Option to create collaborative playlists with friends
My favourite subject is Computer Science.
I enjoy programming and problem-solving.
I find algorithms and data structures fascinating.
I am interested in artificial intelligence and machine learning.
I like learning about new technologies and keeping up with industry trends.
I choose NIT Hamirpur because of its excellent academic reputation and beautiful campus.
NIT Hamirpur has a strong focus on academics and research, which aligns with my career goals.
The campus is located in a serene and picturesque location, which provides a conducive environment for learning.
The faculty members are highly experienced and knowledgeable, and are always willing to help students.
The college has state-of-th...
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