Autodesk Certified Professional in AutoCAD for Design and Drafting Practice Exam

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In AutoCAD, what is a common reason for a layer to be "grayed out" in the Layer Properties Manager?

The layer is currently in use
The layer is being VP Frozen in another viewport
The layer is locked or its visibility is off
The layer is set to current

The correct answer is: The layer is locked or its visibility is off

A layer being "grayed out" in the Layer Properties Manager typically indicates that it is either locked or its visibility is turned off. When a layer is locked, it cannot be modified until it is unlocked, and this status is visually represented by the layer being grayed out. Similarly, if the visibility of the layer is off, it means that objects on that layer will not be displayed in the drawing, leading to the same visual representation. Understanding the context of this situation can clarify why other options do not apply. If a layer is currently in use, it would be fully accessible and not grayed out. An instance where a layer is being VP Frozen in another viewport would mean that it is visible in the current viewport but not in others, thus not affecting its status in the Layer Properties Manager. Finally, if the layer is set to current, it would be highlighted rather than grayed out, which further distinguishes the state of a layer in AutoCAD.