Examination Practice Questions And

Illinois DJ Professional Certification Examination Practice Questions And Correct Answers (Verified Answers) Plus Rationales 2026 Q&A | Instant Download Pdf

• What is the standard frequency range for human hearing that a DJ

should consider when mixing tracks?

• 20 Hz to 20 kHz
• 50 Hz to 15 kHz
• 10 Hz to 10 kHz
• 100 Hz to 25 kHz
• 20 Hz to 20 kHz

Rationale: The average human ear can hear sounds between 20 Hz

and 20 kHz. DJs must consider this range to ensure music clarity and audience satisfaction. 1 / 4

• Which device is primarily used to adjust the bass, mid, and treble

frequencies of a track during a live performance?

• Mixer
• Equalizer
• Amplifier
• Turntable
• Equalizer

Rationale: An equalizer allows the DJ to adjust frequency bands

(bass, mid, treble) to shape the sound output.

• Which file format provides the highest audio quality for DJing?

A. MP3

B. WAV

C. AAC

D. OGG

B. WAV

Rationale: WAV files are uncompressed, offering the highest audio

quality, making them ideal for professional DJing.

• What is beatmatching?
• Matching song lyrics
• Synchronizing tempos of two tracks
• Adjusting volume levels
• Applying effects to vocals
• Synchronizing tempos of two tracks 2 / 4

Rationale: Beatmatching aligns the tempo and beats of two tracks

for smooth transitions during a set.

• What is the typical BPM range for house music?

A. 60-80 BPM

B. 90-110 BPM

C. 115-130 BPM

D. 140-160 BPM

C. 115-130 BPM

Rationale: House music generally ranges from 115 to 130 BPM, which

helps DJs maintain consistent energy on the dance floor.

• Which DJ software is most commonly used for digital mixing?
• AutoTune
• Serato DJ
• Pro Tools
• GarageBand
• Serato DJ

Rationale: Serato DJ is widely used by professional DJs for digital

track mixing and performance.

• When using turntables, what does “scratching” refer to?
• Speeding up a song
• Creating rhythmic sounds by moving the vinyl back and forth
• Playing two tracks simultaneously
• Adjusting equalizer settings 3 / 4

• Creating rhythmic sounds by moving the vinyl back and forth

Rationale: Scratching is a technique used on turntables to produce

percussive or rhythmic sounds by moving the vinyl manually.

• Which cable is commonly used to connect a DJ mixer to a speaker?

A. XLR

B. USB-C

C. HDMI

D. VGA

A. XLR

Rationale: XLR cables are balanced cables commonly used in

professional audio setups for connecting mixers to speakers.

• What is the primary purpose of a DJ controller?
• To record vocals
• To control digital music software
• To amplify sound
• To adjust stage lighting
• To control digital music software

Rationale: DJ controllers allow DJs to manipulate tracks, apply

effects, and perform live using software.

• What is “looping” in DJ performance?
• Playing a track once
• Repeating a section of a track continuously
• Mixing two tracks at random
• / 4