41 questions · from 10 interviews · 1 asked more than once
NetApp interview questions
Every question candidates reported from their NetApp interviews, most frequently asked first. Each links to the write-up it came from, so you can see the round and how it went.
NetApp coding and DSA questions
- 01
Reverse Nodes in k-Group
The problem asks to reverse the nodes of a linked list k at a time. This was a hard DSA problem.
Hard · Asked 2 times · From NetApp SDE1 Interview Experience Bangalore
- 02
Maximum Sum of Unique Subarray
Given an integer array nums and an integer k, write a function to identify the highest possible sum of a subarray within nums such that the subarray has exactly k elements, all elements are unique, and if no such subarray exists, return 0. Includes examples…
- 03
Merge Two Sorted Linked Lists
Given two singly‑linked lists sorted in non‑decreasing order, merge them into a single sorted linked list and return its head. The solution should run in O(N) time where N is the total number of nodes. Example Input: 1→3→5, 2→4→6 Output: 1→2→3→4→5→6
Easy · From NetApp SDE 1 Onsite Interview
- 04
Find the Orchestrator
You are given a list of connections represented as pairs [A,B] where one element is the orchestrator server and the other is a worker. Workers never connect to each other. Identify the orchestrator server. Input: [[O,A],[O,B],[C,O]] Output: O Explanation: The…
Medium · From NetApp SDE 1 Onsite Interview
- 05
Rank Teams by Votes
Given an array of strings votes where each string is a ranking of teams from first to last place, return a string of teams sorted by the ranking rules: first by the number of first‑place votes, then by second‑place votes, and so on. If tied after all…
Medium · From NetApp SDE 1 Onsite Interview
- 06
Spiral Matrix Traversal
Given a 2D matrix, return all its elements in spiral order (clockwise, starting from the top‑left corner).
From Netapp | Senior Software Engineer | Bengaluru | Rejected
- 07
Rotate Matrix 90 Degrees (New Array)
Given a 2D matrix, rotate it 90 degrees clockwise and return a new matrix (the rotation must be performed by creating a new array, not in‑place).
From Netapp | Senior Software Engineer | Bengaluru | Rejected
- 08
Bitwise AND of Numbers Range
The problem involved finding the bitwise AND of all numbers in a given range. This was a medium DSA problem.
Medium · From NetApp SDE1 Interview Experience Bangalore
- 09
Fetch Users and Filter by Post Count from API
Fetch all users from the open endpoint https://gorest.co.in/ and determine which users have posted more than a given x number of posts. This problem requires calling multiple API endpoints and processing the results.
Medium · From NetApp Senior Engineer Interview Experience
- 10
Search a 2D Matrix
Write an efficient algorithm that searches for a value in an m x n matrix. This matrix has the following properties: Integers in each row are sorted in ascending order. The first integer of each row is greater than the last integer of the previous row.
Medium · From Netapp Software Engineer Interview
- 11
Kth Smallest Element in a BST
Given the root of a binary search tree, and an integer k, return the k-th smallest value (1-indexed) of all the values of the nodes in the tree.
Medium · From Netapp Software Engineer Interview
- 12
Find Prime Numbers Up to N
Implement a function to find all prime numbers up to a given integer n .
Easy · From Netapp Interview Round1
- 13
Find Middle of Linked List
Find the middle node of a given linked list.
Easy · From NetApp | MTS 3 | Bengaluru | 23/11/2020 [Offer]
- 14
Reverse Linked List
Reverse a given linked list.
Easy · From NetApp | MTS 3 | Bengaluru | 23/11/2020 [Offer]
- 15
Top View of Binary Tree
Print the top view of a binary tree. This is similar to vertical order traversal but only the topmost nodes at each horizontal distance should be printed.
Medium · From NetApp | MTS 3 | Bengaluru | 23/11/2020 [Offer]
- 16
String Permutations (Algorithm Prediction)
Think of an algorithm to generate permutations of a string. Instead of writing code, given a string, predict the output your algorithm would generate.
Medium · From NetApp | MTS 3 | Bengaluru | 23/11/2020 [Offer]
NetApp system design questions
- 01
Implementing multithreading
Describe how you implement multithreading in your projects and your experience with it.
- 02
Atomic variables, mutexes, and race conditions
Explain the concepts of atomic variables, mutexes, and race conditions, and how you handle them in code.
- 03
Design In-memory Memory Management System
Design an in-memory memory management system.
- 04
Design a Logging System
Design a logging system and explain how to quickly identify errors from logs.
- 05
Design a Time-Based Two-Tier Storage System with TTL and Efficient Retrieval
Design a two-tier storage system with the following requirements: 1. Input: Accepts objects with (Key, Data) pairs. 2. Storage: - Buffer 1 (B1): A fixed-size buffer with capacity N where new objects are initially stored. - Buffer 2 (B2): An unlimited-size…
Hard · From NetApp Senior Engineer Interview Experience
- 06
Cloud Concepts and Scalable System Design
Discussion covered fundamental cloud concepts, including an explanation of Kubernetes, the CAP theorem, the differences and use cases for SQL versus NoSQL databases, and key considerations when designing a highly scalable system.
- 07
Design a Chess Game
Design a chess game. This involves designing the necessary classes, implementing a nextPossibleMoves() method to determine all valid moves for a given piece, and a makenextmove() method to execute a move. Ensure all moves are saved within the board class to…
Hard · From Netapp Interview Round1
- 08
StatefulSets vs. Deployments
How do StatefulSets differ from Deployments in Kubernetes?
From NetApp | Site Reliability Engineer | Bangalore | 18 December [Result (Ghosted by HR)]
- 09
Kubernetes Namespaces
What is a namespace in Kubernetes, and what is its significance?
From NetApp | Site Reliability Engineer | Bangalore | 18 December [Result (Ghosted by HR)]
- 10
Kubernetes Taints and Tolerations
Explain Taints and Tolerations in Kubernetes.
From NetApp | Site Reliability Engineer | Bangalore | 18 December [Result (Ghosted by HR)]
- 11
Node Affinity for Pods
How do you ensure that different replicas/pods for a deployment run on different nodes within a Kubernetes cluster?
From NetApp | Site Reliability Engineer | Bangalore | 18 December [Result (Ghosted by HR)]
- 12
Recovering Deleted Terraform State File
What steps would you take if a Terraform state file gets accidentally deleted?
From NetApp | Site Reliability Engineer | Bangalore | 18 December [Result (Ghosted by HR)]
- 13
Nginx Rate Limiting
Explain how Nginx rate limiting works.
From NetApp | Site Reliability Engineer | Bangalore | 18 December [Result (Ghosted by HR)]
- 14
Helm install vs. Helm upgrade
Compare and contrast helm install and helm upgrade --install .
From NetApp | Site Reliability Engineer | Bangalore | 18 December [Result (Ghosted by HR)]
- 15
How Helm Works
Explain the fundamental working principles of Helm.
From NetApp | Site Reliability Engineer | Bangalore | 18 December [Result (Ghosted by HR)]
- 16
Nginx and Ingress Controller
Explain the relationship and functionality of Nginx and Ingress controllers in Kubernetes.
From NetApp | Site Reliability Engineer | Bangalore | 18 December [Result (Ghosted by HR)]
- 17
Web Infrastructure Concepts Flow
Explain the flow and core concepts behind CDN, rate limiting, DDOS protection, and DNS.
From NetApp | Site Reliability Engineer | Bangalore | 18 December [Result (Ghosted by HR)]
- 18
Kubernetes Certificates
How do certificates work within a Kubernetes environment?
From NetApp | Site Reliability Engineer | Bangalore | 18 December [Result (Ghosted by HR)]
- 19
Design a Cloud Storage Billing Module
Design a billing module for a system hosted on AWS servers. Users are allocated cloud storage. When the limit is exceeded, extra storage should be automatically allocated. Users should see details during billing. Logs should be generated every 15 minutes,…
Medium · From NetApp | MTS 3 | Bengaluru | 23/11/2020 [Offer]
NetApp behavioural and HR questions
- 01
Walk through end-to-end issue resolution
Explain a step-by-step process of handling an issue from identification to resolution.
- 02
Using AI in your work
Discuss how you use AI in your work and compare your contributions versus AI.
- 03
Negative feedback from manager
Share any negative feedback you received from your manager.
- 04
Reason for job change
Explain why you are looking for a new opportunity.
NetApp other questions
- 01
Explain Bash and Python Code Snippets
Explain the meaning and predict the output of various given bash and python code snippets.
From NetApp | Site Reliability Engineer | Bangalore | 18 December [Result (Ghosted by HR)]
- 02
Design Singleton Class (Thread-Safe)
Design a singleton class. Start with a naive implementation and then adapt it for a multi-threaded environment.
NetApp interview questions FAQ
What questions are asked in NetApp interviews?
Candidates reported 41 distinct questions across 10 NetApp interviews. 16 coding and DSA questions, 19 system design questions, 4 behavioural and HR questions, 2 other questions.
Which NetApp interview questions are asked most often?
The most repeated are "Reverse Nodes in k-Group" (2 times).
How difficult are NetApp interview questions?
Of the questions candidates rated, 25% were easy, 56% medium and 19% hard.