CID Technology & Digital Tools 2

Question 1

Which file format is the industry-standard output from PCB design tools used to define copper layer artwork for PCB fabrication?

Accepted Answer

Gerber (RS-274X)

Answer

Gerber RS-274X is the most widely accepted format for communicating PCB copper layer artwork to fabricators.

Question 2

In PCB EDA tools, what does the 'Design Rule Check (DRC)' primarily verify?

Accepted Answer

Physical spacing and clearance constraints

Answer

DRC checks that all physical layout constraints—such as trace-to-trace clearance, minimum trace width, and drill-to-copper spacing—are satisfied.

Question 3

A CID uses a 3D MCAD tool integrated with their ECAD environment. What is the primary benefit of this ECAD/MCAD co-design workflow?

Accepted Answer

Collision detection between PCB components and mechanical enclosure

Answer

ECAD/MCAD co-design allows designers to detect mechanical interference between electronic components and the physical housing early in the design cycle.

Question 4

Which EDA tool feature allows a designer to simulate how signals propagate across differential pairs before committing to layout?

Accepted Answer

Pre-layout simulation with IBIS models

Answer

Pre-layout simulation using IBIS (Input/Output Buffer Information Specification) models estimates signal behavior based on topology and net parameters.

Question 5

What is the purpose of ODB++ format in PCB design?

Accepted Answer

A comprehensive database format for PCB fabrication and assembly data

Answer

ODB++ is a rich, unified format that captures all PCB fabrication and assembly data in a single hierarchical database, replacing multiple separate Gerber and drill files.

(CID) Certified Interconnect Designer Practice Test

(CID) Certified Interconnect Designer Practice Test

CID Technology & Digital Tools 2