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The ESC-D exam has 100 questions and runs 2 hours.
These 10 free ESC-D questions are organized by exam domain, so you can see how each part of the CEDIA Electronic Systems Certified Designer blueprint is tested. Reveal the answer and explanation under each question.
During discovery for a four-zone music system, the owners describe whole-house parties and occasions when different family members listen separately. Their preferred services, audio quality, speaker locations, and control locations are already documented. Before sizing the streaming-source system, the remaining requirement to establish is:
Correct answer: D - The maximum simultaneous independent programs and the accounts' permitted concurrent streams.
Bass is weak at the main seat in a newly commissioned theater. With the main speakers muted and subwoofer equalization bypassed, a sweep shows a deep, narrow dip at 63 Hz at that seat but not at nearby seats. The subwoofer is operating well below its output limit. Which intervention should lead the next design revision?
Correct answer: B - Revisit subwoofer and seating positions, then remeasure across the seating area.
The rear panel of a shelf-mounted projector will be 5.0 m from the screen. In the installed orientation, its lens is 0.5 m closer to the screen than the rear panel. The required image width is 3.0 m, and digital resizing is not permitted. All other installation requirements are satisfied. Select the zoom-lens throw-ratio range that accommodates this geometry.
Correct answer: C - 1.40:1 to 1.60:1
Guests using a tablet in the den select 'Watch TV,' but the command operates the bedroom television. The tablet has retained the room from its previous session; that room is visible only on an advanced settings page. Commands and network communication work correctly. Which interface revision most directly prevents this error?
Correct answer: A - Show the active room prominently and select the room before the activity.
An unprotected 2160p/60 test pattern passes through an HDMI repeater to a UHD display. A movie requiring HDCP 2.2 produces a black picture at the same resolution, frame rate, chroma, and bit depth. The source and display support HDCP 2.2; the repeater supports HDCP 1.4 only. What change addresses the demonstrated limitation?
Correct answer: B - Replace the repeater with one supporting the required HDCP version.
During a gate-automation acceptance test, the approved entrapment sensor fails to produce the operator's required stop or reverse response. No one is in the gate's travel path. Before further operation, the designer should:
Correct answer: A - Take the gate out of service and require correction and retesting by the qualified gate provider.
A Category 6A permanent-link certification report shows positive insertion-loss and return-loss margins, but a NEXT margin of -4.0 dB on one pair combination. The wire map is correct, and a short AV-over-IP demonstration shows no visible errors. What belongs in the acceptance record?
Correct answer: A - Fail: the NEXT limit is not met, despite the successful demonstration.
On a theater's reflected ceiling plan, the height speakers clear the light fittings. A mechanical section nevertheless shows a duct occupying the depth needed by one speaker's backbox. A nearby position preserves the approved listening geometry, but its construction clearance still needs coordination. Which drawing response resolves both aspects of the conflict?
Correct answer: D - Coordinate the revised ceiling plan and a section showing backbox-to-duct clearance.
Two devices will exchange commands and status over three-wire RS-232 without hardware handshaking. Both specify the same DE-9 assignments: pin 2 is receive, pin 3 is transmit, and pin 5 is signal ground. The draft schematic connects matching pin numbers. Choose the correction needed for bidirectional communication.
Correct answer: B - Cross 3-to-2 and 2-to-3; retain the 5-to-5 signal-ground connection.
A distributor proposes an available amplifier in place of a back-ordered model. The specified amplifier delivers 100 W per channel into 8 ohms, from 20 Hz to 20 kHz, at 0.1% distortion with all eight channels driven. The alternative advertises 150 W per channel into 8 ohms at 1 kHz and 1% distortion with two channels driven. Four stereo zones must operate simultaneously. Which conclusion is supported by this submittal?
Correct answer: C - Equivalent output is unproven; obtain all-channel data under the specified bandwidth and distortion conditions.
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