Arista Networks vs Palo Alto Networks Interview Questions
Arista Networks lists 39 LeetCode interview questions while Palo Alto Networks lists 46. They share 10 problems — 26% of Arista Networks's bank and 22% of Palo Alto Networks's. Focus on the overlap first, then drill into 29 Arista Networks-only and 36 Palo Alto Networks-only questions.
Overview
Preparation Strategy
Step 1 — Shared core: Solve the 10 overlapping problems first. These are the highest-yield questions for candidates interviewing at both Arista Networks and Palo Alto Networks.
Step 2 — Company-specific depth: Add Arista Networks-specific problems like Construct String With Repeat Limit, Find the Town Judge, Reverse Nodes in k-Group and Palo Alto Networks-specific problems from the exclusive lists below.
Step 3 — Difficulty tuning: Palo Alto Networks skews harder in our data. Budget extra time for Hard problems if you are targeting that company.
Difficulty Comparison
Top Shared Topics
10 Shared Questions
High-priority problems to practice for both Arista Networks and Palo Alto Networks.
| Problem | Difficulty |
|---|---|
| Restore IP Addresses | Medium |
| Reverse Linked List II | Medium |
| LRU Cache | Medium |
| Search in Rotated Sorted Array | Medium |
| Path Sum II | Medium |
| Longest Palindromic Substring | Medium |
| Longest Substring Without Repeating Characters | Medium |
| Word Break | Medium |
| Decode String | Medium |
| Merge Two Sorted Lists | Easy |
Unique to Arista Networks (29)
Problems in Arista Networks's list that do not appear at Palo Alto Networks.
| Problem | Difficulty |
|---|---|
| Construct String With Repeat Limit | Medium |
| Find the Town Judge | Easy |
| Reverse Nodes in k-Group | Hard |
| Reorder List | Medium |
| Course Schedule II | Medium |
| Remove Linked List Elements | Easy |
| Contains Duplicate II | Easy |
| Inorder Successor in BST II | Medium |
| Maximum Depth of Binary Tree | Easy |
| Copy List with Random Pointer | Medium |
| Missing Number | Easy |
| Rotated Digits | Medium |
Unique to Palo Alto Networks (36)
Problems in Palo Alto Networks's list that do not appear at Arista Networks.
| Problem | Difficulty |
|---|---|
| Find the Longest Equal Subarray | Medium |
| Logger Rate Limiter | Easy |
| String Compression | Medium |
| Add Two Numbers | Medium |
| Design HashMap | Easy |
| Group Anagrams | Medium |
| Minimum Number of Food Buckets to Feed the Hamsters | Medium |
| Min Stack | Medium |
| Binary Tree Level Order Traversal | Medium |
| Merge Intervals | Medium |
| Merge Sorted Array | Easy |
| Median of Two Sorted Arrays | Hard |
Frequently Asked Questions
How many LeetCode questions do Arista Networks and Palo Alto Networks share?
Arista Networks and Palo Alto Networks share 10 LeetCode interview questions. 29 problems appear only in Arista Networks's list and 36 appear only in Palo Alto Networks's list.
What topics overlap most between Arista Networks and Palo Alto Networks?
The most common shared topics between Arista Networks and Palo Alto Networks are String (5 shared questions), Linked List (3 shared questions), Hash Table (3 shared questions), Backtracking (2 shared questions), Array (2 shared questions). Mastering these areas prepares you for both companies.
Which company asks harder LeetCode questions: Arista Networks or Palo Alto Networks?
Arista Networks has 12 Easy, 26 Medium, and 1 Hard questions. Palo Alto Networks has 12 Easy, 29 Medium, and 5 Hard questions. Palo Alto Networks has a higher proportion of Hard problems in its interview set.
How should I prepare if interviewing at both Arista Networks and Palo Alto Networks?
Start with the 10 shared problems since they cover what both companies ask most often. Then add 20 Arista Networks-specific and 20 Palo Alto Networks-specific questions to round out your prep.