> {quote:title=ZeTwinkie wrote:}{quote}
> 1. The Mirror command allows you to do all of the following except ______.
> b. select an existing Line for the mirror line
> The book said the answer was A and several students disagree and believe that none of the answers are correct.
The book is wrong, as are the students who believe none are correct. The user picks the two points that define the mirror line, and these can be just about anywhere creating a mirror line at any angle. They can also pick two points on an existing line to define the mirror line. However, they can not select that existing line.
> {quote:title=ZeTwinkie wrote:}{quote}
> 2. When you enter a value for a Fillet Radius, the Fillet command _____.
> a. prompts you to pick objects to Fillet
> The book said the answer was B and several students disagree and believe that A is the correct answer.
The students are correct here. The current version of AutoCAD returns the user to the Fillet prompt, asking the user to select the first item to fillet. Earlier versions of AutoCAD (probably all the way back to R14) did return the user to the Command: prompt as indicated by the answer B. However, that was thankfully changed long ago.
If these two questions were consecutively numbered, I'd say their answers were transposed and it is a mere typographical error. Either way, the listed answers are incorrect.