1
CTS I EXAM Actual Exam 2026/2027 Complete
Questions and Verified Answers with Detailed
Rationales Pass Guaranteed - A+ Graded
Section 1: CTS-I Certification Exam
Q1: What is the maximum recommended cable length for HDMI 2.1 signals without signal
amplification?
A. 3 meters
B. 5 meters
C. 3 meters for passive cables at 48Gbps [CORRECT]
D. 15 meters
Correct Answer: C
Rationale: HDMI 2.1 supports 48Gbps bandwidth for 8K@60Hz and 4K@120Hz; passive
copper cables are generally limited to 3 meters at these speeds due to signal attenuation,
requiring active optical cables or signal boosters for longer distances.
Q2: Which safety standard governs the safe use of ladders in AV installation environments?
A. OSHA 1910.269
B. OSHA 1926 Subpart X [CORRECT]
C. NFPA 70
D. ANSI/TIA-568
Correct Answer: B
Rationale: OSHA 1926 Subpart X specifically addresses ladder safety requirements in
construction environments, including setup angles, load ratings, and inspection protocols
essential for AV technicians working at heights.
Q3: What is the minimum bend radius for Category 6A Ethernet cable?
A. 4 times the cable diameter
B. 8 times the cable diameter [CORRECT]
C. 2 times the cable diameter
D. 1 times the cable diameter
,2
Correct Answer: B
Rationale: Category 6A cable requires a minimum bend radius of 8 times the outer cable
diameter (approximately 2 inches) to prevent impedance mismatches, return loss, and crosstalk
degradation that would compromise 10Gbps performance.
Q4: In a distributed audio system, what device converts high-impedance speaker lines back to
low-impedance for individual speakers?
A. Amplifier
B. Transformer [CORRECT]
C. Crossover
D. Equalizer
Correct Answer: B
Rationale: 70V/100V line transformers step down high-voltage, low-current distributed audio
signals to low-impedance (4-8 ohm) suitable for individual speakers while maintaining proper
power transfer and frequency response.
Q5: Which tool is used to verify proper polarity and continuity in speaker cable installations?
A. Oscilloscope
B. Multimeter [CORRECT]
C. Spectrum analyzer
D. Cable certifier
Correct Answer: B
Rationale: A digital multimeter set to continuity or resistance mode verifies speaker cable
polarity by identifying which conductor connects to the positive terminal and ensures no open
circuits or shorts exist in the installation.
Q6: What is the proper mounting height for a 55-inch display in a standard conference room with
seated viewers?
A. Center of screen at 36 inches from floor
B. Center of screen at 48-52 inches from floor [CORRECT]
C. Bottom of screen at 72 inches from floor
D. Top of screen at 36 inches from floor
Correct Answer: B
,3
Rationale: For seated viewing (eye level approximately 42-48 inches), display centers should be
mounted 48-52 inches from the floor to align with natural sightlines, preventing neck strain
while ensuring comfortable viewing angles within 15 degrees of horizontal.
Q7: Which cable type is recommended for 4K HDMI runs exceeding 10 meters?
A. Standard HDMI copper cable
B. Active optical HDMI cable [CORRECT]
C. Category 5e UTP
D. RG-6 coaxial
Correct Answer: B
Rationale: Active optical HDMI (AOC) cables use fiber optic transmission for 18Gbps-48Gbps
signals beyond 10 meters, eliminating electromagnetic interference and signal degradation
inherent in long copper HDMI runs.
Q8: What does the NEC Article 725 regulate?
A. High-voltage power distribution
B. Class 1, 2, and 3 remote-control, signaling, and power-limited circuits [CORRECT]
C. Fiber optic installations
D. Wireless communications
Correct Answer: B
Rationale: NEC Article 725 governs the installation of remote-control, signaling, and power-
limited circuits including low-voltage AV control systems, specifying separation requirements,
conductor sizing, and power limitations for safety.
Q9: Which rigging hardware is rated for overhead suspension of AV equipment?
A. Standard eye bolts from hardware store
B. Forged shoulder eye bolts with engineered ratings [CORRECT]
C. Wood screws
D. Plastic cable ties
Correct Answer: B
Rationale: Only forged shoulder eye bolts with documented load ratings, safety factors, and
professional engineering specifications are suitable for overhead suspension; they distribute
loads properly and prevent hardware failure under dynamic stress.
, 4
Q10: What is the primary purpose of a patch panel in AV infrastructure?
A. To amplify signals
B. To provide organized cable termination and management [CORRECT]
C. To convert analog to digital
D. To power remote devices
Correct Answer: B
Rationale: Patch panels provide structured termination points for horizontal cabling, enabling
organized cable management, easy reconfiguration, testing access, and protection of permanent
infrastructure during moves, adds, and changes.
Q11: Which signal type requires 75-ohm impedance matching in AV installations?
A. Balanced audio
B. Unbalanced video (composite, component, SDI) [CORRECT]
C. Dante audio networking
D. Fiber optic signals
Correct Answer: B
Rationale: Unbalanced video signals (composite, component, SDI) require 75-ohm impedance
throughout the signal path to prevent reflections and ghosting; mismatched impedance causes
signal degradation and visible artifacts.
Q12: What safety equipment is mandatory when working above 6 feet in AV installation?
A. Safety glasses only
B. Fall protection (harness, lanyard, anchor points) [CORRECT]
C. Hard hat only
D. Work gloves only
Correct Answer: B
Rationale: OSHA requires fall protection systems including full-body harnesses, shock-absorbing
lanyards, and certified anchor points when working at heights exceeding 6 feet to prevent serious
injury or death from falls.
Q13: Which connector type is standard for professional AES/EBU digital audio?
A. RCA
CTS I EXAM Actual Exam 2026/2027 Complete
Questions and Verified Answers with Detailed
Rationales Pass Guaranteed - A+ Graded
Section 1: CTS-I Certification Exam
Q1: What is the maximum recommended cable length for HDMI 2.1 signals without signal
amplification?
A. 3 meters
B. 5 meters
C. 3 meters for passive cables at 48Gbps [CORRECT]
D. 15 meters
Correct Answer: C
Rationale: HDMI 2.1 supports 48Gbps bandwidth for 8K@60Hz and 4K@120Hz; passive
copper cables are generally limited to 3 meters at these speeds due to signal attenuation,
requiring active optical cables or signal boosters for longer distances.
Q2: Which safety standard governs the safe use of ladders in AV installation environments?
A. OSHA 1910.269
B. OSHA 1926 Subpart X [CORRECT]
C. NFPA 70
D. ANSI/TIA-568
Correct Answer: B
Rationale: OSHA 1926 Subpart X specifically addresses ladder safety requirements in
construction environments, including setup angles, load ratings, and inspection protocols
essential for AV technicians working at heights.
Q3: What is the minimum bend radius for Category 6A Ethernet cable?
A. 4 times the cable diameter
B. 8 times the cable diameter [CORRECT]
C. 2 times the cable diameter
D. 1 times the cable diameter
,2
Correct Answer: B
Rationale: Category 6A cable requires a minimum bend radius of 8 times the outer cable
diameter (approximately 2 inches) to prevent impedance mismatches, return loss, and crosstalk
degradation that would compromise 10Gbps performance.
Q4: In a distributed audio system, what device converts high-impedance speaker lines back to
low-impedance for individual speakers?
A. Amplifier
B. Transformer [CORRECT]
C. Crossover
D. Equalizer
Correct Answer: B
Rationale: 70V/100V line transformers step down high-voltage, low-current distributed audio
signals to low-impedance (4-8 ohm) suitable for individual speakers while maintaining proper
power transfer and frequency response.
Q5: Which tool is used to verify proper polarity and continuity in speaker cable installations?
A. Oscilloscope
B. Multimeter [CORRECT]
C. Spectrum analyzer
D. Cable certifier
Correct Answer: B
Rationale: A digital multimeter set to continuity or resistance mode verifies speaker cable
polarity by identifying which conductor connects to the positive terminal and ensures no open
circuits or shorts exist in the installation.
Q6: What is the proper mounting height for a 55-inch display in a standard conference room with
seated viewers?
A. Center of screen at 36 inches from floor
B. Center of screen at 48-52 inches from floor [CORRECT]
C. Bottom of screen at 72 inches from floor
D. Top of screen at 36 inches from floor
Correct Answer: B
,3
Rationale: For seated viewing (eye level approximately 42-48 inches), display centers should be
mounted 48-52 inches from the floor to align with natural sightlines, preventing neck strain
while ensuring comfortable viewing angles within 15 degrees of horizontal.
Q7: Which cable type is recommended for 4K HDMI runs exceeding 10 meters?
A. Standard HDMI copper cable
B. Active optical HDMI cable [CORRECT]
C. Category 5e UTP
D. RG-6 coaxial
Correct Answer: B
Rationale: Active optical HDMI (AOC) cables use fiber optic transmission for 18Gbps-48Gbps
signals beyond 10 meters, eliminating electromagnetic interference and signal degradation
inherent in long copper HDMI runs.
Q8: What does the NEC Article 725 regulate?
A. High-voltage power distribution
B. Class 1, 2, and 3 remote-control, signaling, and power-limited circuits [CORRECT]
C. Fiber optic installations
D. Wireless communications
Correct Answer: B
Rationale: NEC Article 725 governs the installation of remote-control, signaling, and power-
limited circuits including low-voltage AV control systems, specifying separation requirements,
conductor sizing, and power limitations for safety.
Q9: Which rigging hardware is rated for overhead suspension of AV equipment?
A. Standard eye bolts from hardware store
B. Forged shoulder eye bolts with engineered ratings [CORRECT]
C. Wood screws
D. Plastic cable ties
Correct Answer: B
Rationale: Only forged shoulder eye bolts with documented load ratings, safety factors, and
professional engineering specifications are suitable for overhead suspension; they distribute
loads properly and prevent hardware failure under dynamic stress.
, 4
Q10: What is the primary purpose of a patch panel in AV infrastructure?
A. To amplify signals
B. To provide organized cable termination and management [CORRECT]
C. To convert analog to digital
D. To power remote devices
Correct Answer: B
Rationale: Patch panels provide structured termination points for horizontal cabling, enabling
organized cable management, easy reconfiguration, testing access, and protection of permanent
infrastructure during moves, adds, and changes.
Q11: Which signal type requires 75-ohm impedance matching in AV installations?
A. Balanced audio
B. Unbalanced video (composite, component, SDI) [CORRECT]
C. Dante audio networking
D. Fiber optic signals
Correct Answer: B
Rationale: Unbalanced video signals (composite, component, SDI) require 75-ohm impedance
throughout the signal path to prevent reflections and ghosting; mismatched impedance causes
signal degradation and visible artifacts.
Q12: What safety equipment is mandatory when working above 6 feet in AV installation?
A. Safety glasses only
B. Fall protection (harness, lanyard, anchor points) [CORRECT]
C. Hard hat only
D. Work gloves only
Correct Answer: B
Rationale: OSHA requires fall protection systems including full-body harnesses, shock-absorbing
lanyards, and certified anchor points when working at heights exceeding 6 feet to prevent serious
injury or death from falls.
Q13: Which connector type is standard for professional AES/EBU digital audio?
A. RCA
