CJD Lighting Design & Application

Question 1

Which of the following best describes the three foundational layers of residential lighting design?

Accepted Answer

Ambient, task, and accent lighting

Answer

Natural, artificial, and decorative lighting

Answer

Overhead, floor, and wall lighting

Answer

Direct, indirect, and diffused lighting

Question 2

What does color temperature, measured in Kelvin (K), indicate about a light source?

Accepted Answer

The warmth or coolness of the light's appearance

Answer

The heat output of the bulb in degrees

Answer

The energy efficiency rating of the fixture

Answer

The brightness level in lumens

Question 3

A client wants to showcase a piece of artwork on a feature wall. Which lighting type is most appropriate?

Accepted Answer

Accent lighting

Answer

Ambient lighting

Answer

Task lighting

Answer

Natural lighting

Question 4

What is the Color Rendering Index (CRI) and why does it matter in decorating?

Accepted Answer

A measure of how accurately a light source renders colors compared to natural light

Answer

A scale measuring how energy-efficient a bulb is from 1–100

Answer

A rating system for the directionality of a light beam

Answer

A standard for measuring a bulb's lifespan in hours

Question 5

Which lumen range is generally recommended for ambient lighting in a residential living room of approximately 250 square feet?

Accepted Answer

1,500–3,000 lumens

Answer

500–750 lumens

Answer

4,000–5,000 lumens

Answer

100–300 lumens

Question 6

What is 'layered lighting' in interior decorating?

Accepted Answer

Combining ambient, task, and accent light sources to create depth and flexibility

Answer

Installing light fixtures at multiple heights on the same wall

Answer

Using sheer and blackout curtains together to control natural light

Answer

Placing lamps on multiple levels of shelving units

Question 7

Which type of lighting fixture is best suited for providing task lighting over a kitchen island?

Accepted Answer

Pendant lights hung directly above the work surface

Answer

Recessed can lights in the ceiling center

Answer

Cove lighting along the ceiling perimeter

Answer

Torchière floor lamps placed at room corners