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Deferred revenue is income received before services are performed or goods delivered, recorded as a liability.
Deferred revenue represents payments received for goods/services not yet delivered.
It is recorded as a liability on the balance sheet until the service is performed.
Example: A software company receives $12,000 for a one-year subscription; it recognizes $1,000 as revenue each month.
When the service is deliv...
Use SQL to find the employee ID with the second highest salary from the employee table.
Use the 'ORDER BY' clause to sort salaries in descending order.
Utilize 'LIMIT' to restrict the result set to the top two salaries.
Select the employee ID corresponding to the second highest salary.
Example SQL query: SELECT employee_id FROM employees ORDER BY salary DESC LIMIT 1 OFFSET 1;
NetApp offers advanced features like data protection, automation, and hybrid cloud integration for efficient data management.
Snapshot technology: Enables point-in-time copies of data for quick recovery.
Data ONTAP: Advanced storage operating system that supports various protocols and features like deduplication.
FlexClone: Allows for instant, space-efficient clones of data for development and testing.
MetroCluster: P...
Retrieve nodes from a binary tree at specified levels using a breadth-first search approach.
Use a queue to perform a level-order traversal of the binary tree.
Track the current level and add nodes to a result list when the level matches the specified levels.
Example: For levels [0, 1], in a tree with root 1, return [1, [2, 3]].
Ensure to handle cases where specified levels exceed the height of the tree.
Count islands in a 2D grid of 0s and 1s, where 1s represent land and 0s represent water.
An island is surrounded by water and is formed by connecting adjacent lands horizontally or vertically.
Use Depth-First Search (DFS) or Breadth-First Search (BFS) to explore and mark visited land.
Example grid: [[1,1,0,0],[0,1,0,0],[0,0,1,1],[0,0,0,0]] has 2 islands.
Iterate through each cell; if a '1' is found, increment the isla...
Determine if a subset of integers in an array sums to a given target N using dynamic programming or recursion.
Dynamic Programming: Use a 2D array to store results of subproblems, where dp[i][j] indicates if a sum j can be formed with the first i elements.
Recursive Approach: Implement a recursive function that explores including or excluding each element to find the target sum.
Example: For array [3, 34, 4, 12, 5, 2...
NAS (Network Attached Storage) is file-based, while SAN (Storage Area Network) is block-based storage, serving different needs.
NAS is typically used for file sharing over a network, suitable for home and small business environments.
SAN provides high-speed block-level storage, ideal for enterprise applications and databases.
NAS uses standard network protocols like NFS and SMB, while SAN uses protocols like iSCSI an...
A QA engineer should possess analytical skills, attention to detail, communication abilities, and a strong understanding of testing methodologies.
Analytical Skills: Ability to analyze requirements and identify potential issues early in the development process.
Attention to Detail: Ensuring that every aspect of the application is tested thoroughly, catching even the smallest bugs.
Communication Skills: Effectively co...
I prioritize tasks, communicate effectively, and use tools to manage deadlines efficiently.
Prioritization: I assess tasks based on urgency and importance, focusing on high-impact projects first. For example, if a critical bug is found, I address it immediately.
Time Management: I break down larger tasks into smaller, manageable parts and set mini-deadlines to ensure steady progress.
Effective Communication: I keep s...
Developing a real-time data processing system for a large e-commerce platform
Designed and implemented a scalable architecture using Apache Kafka for real-time data ingestion
Optimized data processing algorithms to handle high volume of transactions efficiently
Collaborated with cross-functional teams to integrate the system with existing infrastructure
Implemented monitoring and alerting mechanisms to ensure system r...
IP tables is a firewall configuration tool in Linux.
IP tables is used to filter network traffic based on a set of rules.
It can be used to block or allow traffic based on source/destination IP address, port number, protocol, etc.
IP tables is configured using the command line interface.
It is commonly used in Linux servers to secure the network.
Example: iptables -A INPUT -s 192.168.1.0/24 -j DROP
Program to traverse a linked list
Start from the head node
Iterate through each node until the end is reached
Perform necessary operations on each node
Program to reverse a linked list using extra space.
Create a new empty linked list
Traverse the original linked list and push each node to the new linked list
Return the new linked list as the reversed linked list
Find the total number of matches to be played in a knockout football tournament with n teams.
The number of matches played in a knockout tournament is always one less than the number of teams.
Use the formula (n-1) to calculate the total number of matches.
For example, in a tournament with 8 teams, the total number of matches played would be 7.
Find closest ancestor of two nodes in a tree
Traverse the tree from root to both nodes and store the paths
Compare the paths to find the closest common ancestor
Use recursion to traverse the tree and find the ancestor
If one node is an ancestor of the other, return the ancestor node
Segmentation fault is a type of error that occurs when a program tries to access a memory location that it is not allowed to access.
Segmentation fault is also known as segfault.
It is a common error in C and C++ programming languages.
It occurs when a program tries to access a memory location that it is not allowed to access, such as an area of memory that has not been allocated to the program.
This can happen due to a va...
To find the maximum number from a million numbers entered on the fly or 1000 at a time.
Create a variable to store the maximum number and initialize it to the first number entered
Compare each subsequent number entered with the current maximum and update the variable if necessary
If numbers are given 1000 at a time, store the maximum of each batch and compare them at the end to find the overall maximum
Variables for kernel level process should be stored in stack.
Stack is faster than heap for accessing variables.
Stack is limited in size, so use it for small variables.
Heap is used for larger variables that need to persist beyond the function call.
Kernel level processes should avoid dynamic memory allocation.
Internal fragmentation is the unused memory space within a partition or block.
Occurs when allocated memory is larger than required
Leads to inefficient use of memory
Can be reduced by using memory allocation techniques like paging or segmentation
In C, structure variables cannot be directly compared using the comparison operators. Cell padding is used to align data in memory for efficiency.
Structure variables in C cannot be compared directly using comparison operators like == or !=. Instead, you need to compare each member of the structure individually.
Cell padding refers to the practice of adding empty bytes between structure members to align them in memory. T...
Global variables are stored in data segment while local variables are stored in stack memory.
Global variables are accessible throughout the program while local variables are only accessible within their scope.
Global variables are initialized to default values while local variables are not.
Global variables can be modified by any function while local variables can only be modified within their scope.
Control is passed through function calls. Return address of main is stored in the stack.
Control is passed to a function when it is called from main()
The function executes and returns control to main() using the return statement
The return address of main() is stored in the stack
When the function returns, the return address is used to resume execution in main()
To calculate square root without math.h, use Newton's method.
Choose a number to find the square root of
Make an initial guess for the square root
Use Newton's method to refine the guess
Repeat until desired accuracy is achieved
Newton's method: new_guess = (guess + (number/guess))/2
Find the lowest floor from which an egg breaks when dropped from a 30 floor building with 4 eggs.
Use binary search approach to minimize the number of drops
Start dropping the egg from the middle floor and check if it breaks
If it breaks, start dropping from the middle of the lower half, else start from the middle of the upper half
Repeat the process until the lowest floor is found
Use a max-heap to efficiently manage and delete the largest file in a nearly full file system.
A max-heap allows for efficient retrieval and deletion of the largest element.
Inserting a new file into the heap takes O(log n) time.
Deleting the largest file (root of the heap) also takes O(log n) time.
Example: If files have sizes [10MB, 20MB, 30MB], the max-heap will keep 30MB at the root.
This structure ensures that the larg...
Using a heap in Q6 can have certain disadvantages.
Heap operations are slower than array operations.
Heap requires extra memory allocation.
Heap may not be suitable for small datasets.
Heap may not be efficient for certain types of data structures.
Heap may lead to fragmentation of memory.
The OS resolves file paths by traversing the directory structure to locate the file's inode and data blocks.
The file path is a hierarchical structure starting from the root directory (/).
Each directory in the path is checked sequentially to find the next level.
The OS uses the inode associated with the file to access its metadata and data blocks.
For example, to find /root/home/mnit/abc.txt, the OS checks /root, then /ho...
I interned at XYZ company and developed a software using Agile methodology. Faced challenges in meeting deadlines.
Interned at XYZ company and developed a software
Used Agile methodology for software development
Faced challenges in meeting deadlines
Collaborated with team members to overcome challenges
Engineering solution to reduce plastic waste
Develop biodegradable plastics
Create recycling machines for households
Implement a deposit system for plastic bottles
Encourage the use of reusable bags and containers
Design products with minimal packaging
Develop a system to convert plastic waste into fuel
I really enjoyed the section on your development process.
The detailed explanation of your agile methodology was impressive.
The emphasis on collaboration and communication stood out to me.
The use of real-life examples to illustrate your process was helpful.
I appreciated the focus on continuous improvement and learning.
Overall, it gave me a good understanding of how your team works and what to expect if I were to join.
Yes, my role as a software developer at NetApp is clear.
My role is to develop and maintain software applications for NetApp.
I work closely with other developers, project managers, and stakeholders to ensure that the software meets the needs of the business.
I am responsible for writing clean, efficient, and well-documented code.
I also participate in code reviews and contribute to the overall development process.
For exam...
I enjoyed computer science and mathematics the most in college.
Computer Science - I loved learning about algorithms, data structures, and programming languages.
Mathematics - I enjoyed solving complex problems and understanding mathematical concepts.
Participated in various technical and cultural events, volunteered for social causes.
Participated in coding competitions like CodeChef, HackerRank, etc.
Organized technical events like hackathons, coding workshops, etc.
Volunteered for social causes like blood donation camps, cleanliness drives, etc.
Participated in cultural events like dance competitions, music concerts, etc.
I appeared for an interview in Feb 2025.
0/1 Knapsack Problem
Determine if a subset of integers in an array sums to a given target N using dynamic programming or recursion.
Dynamic Programming: Use a 2D array to store results of subproblems, where dp[i][j] indicates if a sum j can be formed with the first i elements.
Recursive Approach: Implement a recursive function that explores including or excluding each element to find the target sum.
Example: For array [3, 34, 4, 12, 5, 2] and...
Count islands in a 2D grid of 0s and 1s, where 1s represent land and 0s represent water.
An island is surrounded by water and is formed by connecting adjacent lands horizontally or vertically.
Use Depth-First Search (DFS) or Breadth-First Search (BFS) to explore and mark visited land.
Example grid: [[1,1,0,0],[0,1,0,0],[0,0,1,1],[0,0,0,0]] has 2 islands.
Iterate through each cell; if a '1' is found, increment the island co...
Retrieve nodes from a binary tree at specified levels using a breadth-first search approach.
Use a queue to perform a level-order traversal of the binary tree.
Track the current level and add nodes to a result list when the level matches the specified levels.
Example: For levels [0, 1], in a tree with root 1, return [1, [2, 3]].
Ensure to handle cases where specified levels exceed the height of the tree.
A QA engineer should possess analytical skills, attention to detail, communication abilities, and a strong understanding of testing methodologies.
Analytical Skills: Ability to analyze requirements and identify potential issues early in the development process.
Attention to Detail: Ensuring that every aspect of the application is tested thoroughly, catching even the smallest bugs.
Communication Skills: Effectively communi...
I prioritize tasks, communicate effectively, and use tools to manage deadlines efficiently.
Prioritization: I assess tasks based on urgency and importance, focusing on high-impact projects first. For example, if a critical bug is found, I address it immediately.
Time Management: I break down larger tasks into smaller, manageable parts and set mini-deadlines to ensure steady progress.
Effective Communication: I keep stakeh...
I applied via Naukri.com and was interviewed in Oct 2024. There was 1 interview round.
Count the frequency of numbers in an array of strings.
Iterate through the array and use a hashmap to store the frequency of each number.
If the number is already in the hashmap, increment its count. Otherwise, add it to the hashmap with a count of 1.
Return the hashmap with the frequency of each number.
Joins are SQL operations that combine rows from two or more tables based on related columns.
INNER JOIN: Returns records with matching values in both tables. Example: SELECT * FROM A INNER JOIN B ON A.id = B.id;
LEFT JOIN: Returns all records from the left table and matched records from the right table. Example: SELECT * FROM A LEFT JOIN B ON A.id = B.id;
RIGHT JOIN: Returns all records from the right table and matched re...
DAX (Data Analysis Expressions) is a formula language used in Power BI, Excel, and SQL Server for data modeling and analysis.
DAX is used to create calculated columns, measures, and tables in Power BI.
It includes functions for filtering, aggregating, and manipulating data.
Example: A measure to calculate total sales could be defined as: Total Sales = SUM(Sales[Amount]).
DAX supports time intelligence functions, allowing f...
I appeared for an interview in Apr 2025, where I was asked the following questions.
I applied via Job Fair and was interviewed in Oct 2024. There was 1 interview round.
I applied via Campus Placement and was interviewed in Jun 2024. There were 3 interview rounds.
Hirepro was used for coding round
I have worked on various projects including a mobile app for tracking fitness goals and a website for a local charity organization.
Developed a mobile app using React Native to help users track their fitness goals
Designed and built a website for a local charity organization to increase online presence and donations
In 5 years, I see myself as a senior manager leading a team of professionals in a successful company.
Leading a team of professionals
Senior manager role
Working in a successful company
NetApp offers reliable and efficient data storage solutions for businesses of all sizes.
NetApp provides high-performance storage solutions for businesses to efficiently manage and protect their data.
Their data management software allows for seamless integration with cloud services, enabling businesses to easily scale their storage needs.
NetApp's reputation for reliability and customer support makes them a trusted choic...
I appeared for an interview in Jul 2024.
Use sliding window technique to find starting indices of substring formed by concatenating words from list in string S.
Create a hashmap to store the frequency of words in the list.
Use sliding window of size equal to total length of all words combined.
Slide the window through the string and check if the substring formed matches the hashmap.
If match found, store the starting index of the substring.
I appeared for an interview in Jan 2025.
C-programming , c++, embedded c
C-programming, embedded c
I applied via Naukri.com and was interviewed in Oct 2024. There was 1 interview round.
I was asked a question to implement LRU cache. Interviewer as really helpful
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The duration of NetApp interview process can vary, but typically it takes about less than 2 weeks to complete.
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