AutoCAD Start-Up Behavior — Default Layer When you begin a new drawing in AutoCAD (using a standard template), is the default active layer “Defpoints,” or is the initial layer normally “0” while Defpoints appears only after certain annotations are created?

Introduction / Context:
This item tests practical knowledge of AutoCAD layer behavior at file creation. Many beginners confuse the special Defpoints layer with the initial default layer. Knowing the difference prevents plotting and visibility problems later in a project.

Given Data / Assumptions:

• A new drawing is created from a typical out-of-the-box or firm template.
• AutoCAD always has layer “0,” which is special and always present.
• Defpoints is a special, non-plotting layer that appears when dimensions or certain annotation objects are created.

Concept / Approach:
At start, the current layer is normally “0.” Defpoints is not present until a dimension (or related annotation) is added, at which point AutoCAD creates Defpoints automatically to store definition points. Using Defpoints for regular geometry is poor practice because it will not plot. Therefore, the claim that the start-up layer will be Defpoints is incorrect in standard workflows.

Step-by-Step Solution:
1) Create a new drawing from a standard template.2) Inspect the Layer Properties Manager: layer “0” exists and is current.3) Add a dimension; observe AutoCAD creates “Defpoints.”4) Confirm Defpoints is non-plotting and should not host model geometry.

Verification / Alternative check:
Open the plot preview; entities on Defpoints will not appear. Many CAD standards explicitly prohibit placing model lines on Defpoints for this reason, reinforcing that it is not a default working layer.

Why Other Options Are Wrong:
“Correct” contradicts standard behavior. The options about plot style, 3D templates, or educational versions do not change the fundamental rule: the default current layer is typically “0.”

Common Pitfalls:
Placing geometry on Defpoints to suppress plotting; forgetting to switch off Defpoints dependency when auditing CAD standards; assuming Defpoints exists before any annotation is created.

Final Answer:
Incorrect