Refer to the exhibit.

The correct answer is A . The study guide states that “The OT view is not available by default. You must enable it in the Feature Visibility section of the GUI or using the CLI command shown on this slide” and shows config system settings → set gui-ot enable . It also says that “After you enable the feature, the Asset Identity Center contains an Asset Identity List tab and an OT View tab.” This directly explains why the OT View tab is missing: the feature that enables the Purdue-style OT display has not been enabled yet.

The OT View is the view that displays devices in a Purdue diagram , and the Asset Identity List also shows the current Purdue level for each device. Because the answer options do not explicitly say enable OT View in Feature Visibility , option A is the intended match, since it refers to enabling the Purdue-related OT display feature. Option B is incorrect because device detection affects visibility of devices, not whether the OT View tab exists. Option C is not supported by the study guide, and option D is also not given as the requirement for showing the OT View tab.