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Interview questions from top companies, mapped to the exact round they show up in. Prep for what you will actually face.

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Online AssessmentDSA / CodingMachine CodingLow-Level Design

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The Loop aggregates publicly shared interview experiences and curated commonly-asked questions, each labeled with its source. Not affiliated with any company listed.

CC BY-NC 4.0 · © 2026

← Tenable

New Grad / Junior Frontend at Tenable

FrontendNew Grad / JuniorWithdrew◆ Commonly asked· 2025

A junior frontend loop. Pragmatic questions — more real-world than pure puzzles.

The loop · 5 rounds

01

Round 01 · 1 question

Online Assessment

Timed online coding / aptitude screen, usually the first filter.

  • Implement a min-stack supporting getMin in O(1).
    New Grad / JuniorMedium◆ Commonly asked
    #stack
    PracticeLeetCode↗GeeksforGeeks↗
02

Round 02 · 3 questions

DSA / Coding

Data structures & algorithms on a whiteboard or shared editor.

  • Binary tree maximum path sum.
    New Grad / JuniorHard◆ Commonly asked
    #tree#dfs
    PracticeLeetCode↗GeeksforGeeks↗
  • Median of two sorted arrays.
    New Grad / JuniorHard◆ Commonly asked
    #binary-search
    PracticeLeetCode↗GeeksforGeeks↗
  • Coin change — fewest coins to make an amount.
    New Grad / JuniorMedium◆ Commonly asked
    #dp
    PracticeLeetCode↗GeeksforGeeks↗
03

Round 03 · 2 questions

Machine Coding

Build a working component or service under time pressure.

  • Build a nested checkbox tree with indeterminate state.
    New Grad / JuniorHard◆ Commonly asked
    #react#recursion
    PracticeGeeksforGeeks↗Search↗
  • Build a "connect four" game with win detection.
    New Grad / JuniorMedium◆ Commonly asked
    #react#state
    PracticeGeeksforGeeks↗Search↗
04

Round 04 · 3 questions

Tech Deep-Dive

Deep questions on your core stack and fundamentals.

  • How does a service worker enable offline support?
    New Grad / JuniorMedium◆ Commonly asked
    #pwa#offline
    PracticeGeeksforGeeks↗Search↗
  • Explain `useEffect` dependencies and common pitfalls.
    New Grad / JuniorMedium◆ Commonly asked
    #react#hooks
    PracticeGeeksforGeeks↗Search↗
  • How do you optimize a slow React app? (profiling → fixes)
    New Grad / JuniorHard◆ Commonly asked
    #react#perf
    PracticeGeeksforGeeks↗Search↗
05

Round 05 · 2 questions

Behavioral / HR

Values, collaboration, and past-experience (STAR) questions.

  • Tell me about the most impactful project of your career.
    New Grad / Junior◆ Commonly asked
    #impact#star
  • Tell me about a time you went above and beyond for a customer.
    New Grad / Junior◆ Commonly asked
    #customer#star

Practice each round across every company

  • Online Assessment
  • DSA / Coding
  • Machine Coding
  • Tech Deep-Dive
  • Behavioral / HR

◆ This experience is composed from commonly reported questions for this role and level. Real, individually-shared interviews will be layered in over time.