Autodesk Certified Professional in AutoCAD for Design and Drafting Practice Exam

What action should be taken to ensure that a viewport's scale remains unaffected by Zoom or Pan?

1. Deactivate the viewport layer

2. Lock the viewport

3. Set the viewport to a fixed scale

4. Use a specific viewport style

The correct answer is: Lock the viewport

Locking the viewport is the most effective action to ensure that its scale remains unaffected by any Zoom or Pan operations within the model or paper space. When a viewport is locked, it restricts any modifications that can change the view, including zooming in or panning around. This allows the user to maintain the desired scale and orientation of the view without accidentally altering it during navigation or edits. In contrast, deactivating the viewport layer does not safeguard the viewport from changes in scale, as it merely hides or controls the visibility of the layer itself rather than locking the view. Setting the viewport to a fixed scale is a practical step to maintain consistency, but if the viewport isn't locked, users can still inadvertently zoom or pan, affecting the intended view. Using a specific viewport style can enhance the appearance or configuration of the viewport but does not dictate or secure its scale. Therefore, locking the viewport delivers the necessary security for the view settings, making it the most suitable choice for this scenario.