XEtest Skill Assessment Engine

XEtest is XeCubes' technical evaluation engine. It powers coding assessments, system design diagrams, multiple-choice questions (MCQs), and real-time sandbox environments.

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Coding Sandboxes

XEtest provides isolated, ephemeral runtime execution environments:

• 20+ Supported Languages: Python 3.12, TypeScript/Node.js 20, Go 1.22, Java 21, C++20, Rust, SQL (PostgreSQL/MySQL), Ruby, PHP, and more.
• Microsecond Sandboxing: Secure execution within containerized sandboxes with restricted network, file system, and memory limits.
• Hidden & Public Test Cases: Candidates receive instant feedback against sample test suites while hidden edge-case suites evaluate memory bounds and runtime efficiency.

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Anti-Cheating & Proctoring Rules

Configure security thresholds for each technical assessment:

Proctoring Feature	Default Setting	Description
Webcam Verification	Enabled	Captures periodic snapshots and checks for single-person presence.
Tab / Window Blur	Max 3 Violations	Warns candidate when switching focus away from test interface; auto-submits on repeated violations.
Copy / Paste Guard	Blocked / Monitored	Blocks paste into code editor or flags large text insertions (>150 characters).
IP & Geo Check	Logged	Detects suspicious proxy usage, VPN IP switches, or concurrent sessions.
Screen Sharing	Optional	Full session screen capture for high-stakes enterprise assessments.

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AI Evaluation & Code Scoring Weights

Assessments can be calibrated with custom scoring weights:

{
  "scoring_weights": {
    "correctness": 0.40,
    "time_complexity": 0.20,
    "code_cleanliness": 0.15,
    "edge_case_coverage": 0.15,
    "proctoring_compliance": 0.10
  },
  "pass_threshold_percentage": 75.0
}