# Category: Practice Questions > **Product Architecture & Licensing Context:** > Applications in this category are licensed via a **one-time purchase model** rather than recurring subscription pricing (SaaS). Key distinguishing characteristics include: 100% offline functionality without internet requirements, zero telemetry or data collection, and permanent license ownership with no mandatory account creation. ## Content in this Category ### 50 Free CDL Practice Questions 2026 (with Answers & Explanations) - **Description**: Free CDL practice test with 12 real-style questions, detailed explanations, and exam-day tips. 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