Palo Alto Networks vs ServiceNow Interview Questions
Palo Alto Networks lists 46 LeetCode interview questions while ServiceNow lists 71. They share 12 problems — 26% of Palo Alto Networks's bank and 17% of ServiceNow's. Focus on the overlap first, then drill into 34 Palo Alto Networks-only and 59 ServiceNow-only questions.
Overview
Preparation Strategy
Step 1 — Shared core: Solve the 12 overlapping problems first. These are the highest-yield questions for candidates interviewing at both Palo Alto Networks and ServiceNow.
Step 2 — Company-specific depth: Add Palo Alto Networks-specific problems like Find the Longest Equal Subarray, Logger Rate Limiter, Add Two Numbers and ServiceNow-specific problems from the exclusive lists below.
Step 3 — Difficulty tuning: ServiceNow skews harder in our data. Budget extra time for Hard problems if you are targeting that company.
Difficulty Comparison
Top Shared Topics
12 Shared Questions
High-priority problems to practice for both Palo Alto Networks and ServiceNow.
| Problem | Difficulty |
|---|---|
| LRU Cache | Medium |
| String Compression | Medium |
| Longest Substring Without Repeating Characters | Medium |
| Group Anagrams | Medium |
| Merge Intervals | Medium |
| Median of Two Sorted Arrays | Hard |
| Subarray Sum Equals K | Medium |
| Two Sum | Easy |
| Merge Two Sorted Lists | Easy |
| Sliding Window Maximum | Hard |
| Valid Parentheses | Easy |
| Longest Palindromic Substring | Medium |
Unique to Palo Alto Networks (34)
Problems in Palo Alto Networks's list that do not appear at ServiceNow.
| Problem | Difficulty |
|---|---|
| Find the Longest Equal Subarray | Medium |
| Logger Rate Limiter | Easy |
| Add Two Numbers | Medium |
| Design HashMap | Easy |
| Search in Rotated Sorted Array | Medium |
| Decode String | Medium |
| Minimum Number of Food Buckets to Feed the Hamsters | Medium |
| Min Stack | Medium |
| Binary Tree Level Order Traversal | Medium |
| Merge Sorted Array | Easy |
| Insert Delete GetRandom O(1) | Medium |
| Restore IP Addresses | Medium |
Unique to ServiceNow (59)
Problems in ServiceNow's list that do not appear at Palo Alto Networks.
Frequently Asked Questions
How many LeetCode questions do Palo Alto Networks and ServiceNow share?
Palo Alto Networks and ServiceNow share 12 LeetCode interview questions. 34 problems appear only in Palo Alto Networks's list and 59 appear only in ServiceNow's list.
What topics overlap most between Palo Alto Networks and ServiceNow?
The most common shared topics between Palo Alto Networks and ServiceNow are Array (6 shared questions), Hash Table (5 shared questions), String (5 shared questions), Linked List (2 shared questions), Two Pointers (2 shared questions). Mastering these areas prepares you for both companies.
Which company asks harder LeetCode questions: Palo Alto Networks or ServiceNow?
Palo Alto Networks has 12 Easy, 29 Medium, and 5 Hard questions. ServiceNow has 7 Easy, 51 Medium, and 13 Hard questions. ServiceNow has a higher proportion of Hard problems in its interview set.
How should I prepare if interviewing at both Palo Alto Networks and ServiceNow?
Start with the 12 shared problems since they cover what both companies ask most often. Then add 20 Palo Alto Networks-specific and 20 ServiceNow-specific questions to round out your prep.