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Performance Optimization Flashcards

7 cards from real CDT practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.

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  1. In a continuous-feed inkjet production environment, what is the most common cause of banding artifacts?

    Answer: Clogged or misfiring print heads

    Clogged or misfiring inkjet nozzles produce repeating horizontal streaks (banding) perpendicular to paper travel direction.

  2. A document technologist is tasked with reducing the time-to-first-page for a long variable data print job. The best approach is:

    Answer: Pre-composing and caching static page elements in the RIP

    Pre-composing fixed elements so the RIP only processes variable portions per page dramatically cuts first-page-out time.

  3. What does 'substrate pass-through speed' optimization refer to in a high-speed production printer?

    Answer: Matching media feed velocity to engine imaging speed for consistent print quality

    Pass-through speed synchronization ensures the substrate moves at the correct velocity relative to imaging drums or heads, preventing skew and quality defects.

  4. Which practice best reduces waste in a digital color production environment when running multiple jobs across a shift?

    Answer: Running press profiles and calibration at the start of each shift

    Shift-start calibration corrects for engine drift from warm-up, temperature changes, and consumable wear, reducing color-related reprints.

  5. In variable data printing (VDP), which composition model typically delivers the best RIP performance for large databases?

    Answer: PPML (Personalized Print Markup Language) with resource caching

    PPML separates reusable resources from variable data and caches them in the RIP, dramatically reducing per-page processing time for large VDP jobs.

  6. When evaluating a document workflow for automation opportunities, which task typically provides the highest ROI when automated?

    Answer: Preflight checking and error correction before RIP submission

    Automated preflight catches file errors before RIP processing, eliminating expensive reprints and RIP time wasted on unprocessable jobs.

  7. A print center uses 'utilization rate' as a KPI. If a press is available 8 hours but only prints for 5 hours, what is the utilization rate?

    Answer: 62.5%

    Utilization rate = productive time / available time = 5/8 = 62.5%, indicating the press was idle 37.5% of available time.