You open a document and some of the filters are disabled in the Filter menu. Which of the following could be a reason for this?

You can copy and paste a selection into a layer's mask but not a vector mask.

When resizing an image, which resampling method does not employ any anti-aliasing smoothing?

Version of Adobe Bridge that can be used from a palette within Photoshop CS5 and later?

If you have an active selection and you paste an image into your document, what is the result?

Which Photoshop commands or tools support the Content-Aware option in CS5?

Which format cannot be imported as a 3D object?

When using the Brush tool, Shift + [...

If you apply the difference blend mode to a new layer duplicate, what is the result?

Which blending mode has a random replacement of the result color with the base color or the blend color?

Photoshop actions are saved under which file format?