10 exam-style questions with answers and explanations, straight from our 1,030-question bank. Tap an answer to check yourself. When you're ready, take the scored version in the free practice test.
The IST exam has 165 questions and runs 3 hours.
These 10 free IST questions are organized by exam domain, so you can see how each part of the CEDIA Certified Integrated Systems Technician blueprint is tested. Reveal the answer and explanation under each question.
During indoor-camera pre-wire, a client requests an additional gate camera requiring a new trench and conduit. The signed scope excludes this work. Indoor cabling can proceed independently, and the project manager must authorize scope, cost, and schedule changes. How should the technician keep authorized work moving?
Correct answer: C - Continue indoor cabling and submit the gate-camera change for authorization.
A newly terminated category-cable link has correct pin-to-pin continuity but fails its near-end crosstalk test. Inspection finds the following arrangement at BOTH ends: pin 1 white/orange, pin 2 white/green, pin 3 orange, and pin 6 green. The remaining conductors are correctly placed. How should this termination error be classified?
Correct answer: A - Split pairs with correct pin-to-pin continuity
A media controller requires a regulated 12 V DC, center-positive supply rated for at least 2 A. A replacement provides regulated 12 V DC at up to 3 A, has the correct polarity and connector dimensions, and carries the required safety approval. Compatible replacement supplies are permitted by the controller manufacturer. The replacement should be:
Correct answer: D - Installed; the controller draws the current it needs.
Three identical passive speakers are proposed for direct parallel connection to one amplifier channel. Each is nominally 8 ohms; the amplifier permits a minimum load of 4 ohms. Treat the speakers as ideal 8-ohm loads for this check. Which assessment of the proposed connection is sound?
Correct answer: B - About 2.7 ohms; below the amplifier's limit, so redistribute the speakers.
A control processor uses the fixed address 192.168.50.40. It becomes intermittently unreachable after a laptop joins the same LAN. The DHCP lease list shows that the laptop has also received 192.168.50.40; other devices remain reachable. What change prevents the conflict from recurring while preserving the processor's address?
Correct answer: D - Exclude the processor's address from DHCP, then renew the laptop's lease.
A wireless access point requires 18 W at its power input for full operation. It enters a reduced-function mode on an IEEE 802.3af Type 1 switch port, even though the switch has ample unused total PoE budget. The copper link passes certification, and the access point supports IEEE 802.3at. Full operation requires which change at the power source?
Correct answer: D - Use an IEEE 802.3at Type 2 port or compatible injector.
A streamer displays its menus and an unprotected test clip through an HDMI matrix, but a purchased film produces a blank screen. The film plays when the streamer is connected directly to the display. Both clips use the same fixed resolution, frame rate, color depth, and chroma format, all supported by the matrix. Which issue best accounts for this selective failure?
Correct answer: B - HDCP authentication through the matrix
A television sends uncompressed 5.1 PCM to the main-room receiver over eARC. A client also wants the same program on a stereo amplifier whose optical S/PDIF input accepts only two-channel PCM, without reducing main-room playback to stereo. An extractor can pass eARC through unchanged but cannot downmix its optical output. Which change meets both playback requirements?
Correct answer: C - Use an extractor with independent stereo downmixing and multichannel eARC pass-through.
The 'Watch TV' activity begins with an infrared power-toggle command. It works when the television is off, but switches the television off when the client has already turned it on with the original remote. Separate Power On and Power Off codes are available for this model; the remaining commands and delays are correct. Which edit removes dependence on the television's initial power state?
Correct answer: A - Replace the power toggle with the television's discrete Power On command.
Automatic calibration assigns a powered subwoofer a distance of 6.8 m, although its tape-measured distance is 3.4 m. The subwoofer contains digital signal processing. Independent timing and crossover-region measurements confirm correct alignment with the main speakers at the reference seat. What should be done with the distance entry?
Correct answer: C - Retain it; the timing measurement includes delay from the subwoofer's electronics.
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