DIS Print Production & Prepress

Question 1

In prepress production, what is the primary purpose of 'trapping'?

Accepted Answer

To prevent white gaps at color boundaries caused by misregistration on press

Answer

To increase ink density for more vibrant color output

Answer

To separate colors into individual channels for plate making

Answer

To reduce file size for faster RIP processing

Question 2

What does a Raster Image Processor (RIP) do in a print production workflow?

Accepted Answer

Converts vector and image data into raster dot patterns for output devices

Answer

Compresses image files to reduce storage and transfer requirements

Answer

Automatically calibrates printer ICC color profiles

Answer

Manages network file transfers between prepress workstations

Question 3

In offset lithography, what is 'dot gain'?

Accepted Answer

The spreading of ink dots on the substrate that makes halftone dots appear larger than designed

Answer

A technique for increasing apparent image resolution during RIPping

Answer

A method to enhance shadow detail in highlight-to-shadow gradients

Answer

The increase in digital file size caused by embedding color profiles

Question 4

What is the typical total ink limit (TIL) for coated paper in CMYK offset printing?

Accepted Answer

320–340%

Answer

100–120%

Answer

400%

Answer

200–220%

Question 5

What is 'overprinting' in prepress, as opposed to a knockout?

Accepted Answer

Printing one ink layer directly on top of another without removing the underlying color

Answer

Exceeding the maximum recommended ink density for a given substrate

Answer

Adding extra bleed beyond the standard specification to a print file

Answer

Using more than four color separations in a single print job

Question 6

What is the standard bleed dimension used in US commercial print production?

Accepted Answer

0.125 inches (1/8 inch) beyond the trim edge

Answer

0.5 inches (1/2 inch) beyond the trim edge

Answer

0.0625 inches (1/16 inch) beyond the trim edge

Answer

0.25 inches (1/4 inch) beyond the trim edge

Question 7

Which file format is the industry standard for delivering print-ready files to a commercial printer?

Accepted Answer

PDF/X

Answer

JPEG

Answer

PSD

Answer

EPS