What is the recommended frequency and tolerance of testing the accuracy of the couch shift motion?

Which of the following is an example of a level 3 action level?

What is the accepted tolerance for electron output constancy (daily QA)?

Which of the following describes penumbra?  Choose all that apply.

Which Task Group includes AAPM recommendations for linac tolerances and accounts for the advanced technologies that many modern linacs are equipped with?

An increase in field size will equate to an increase in dose rate (output).

What is defined as testing that involves measurement of output and performance of a linac against manufacture specifications?

What is the frequency and tolerance of checking image/treatment isocenter coincidence on a kVCT imager?

A physicist is completing monthly QA, and finds that the light field and radiation field coincidence for a symmetrical jaw is 1.5mm.  Is this acceptable?

What is the tolerance for a daily quality check of beam output of a non-IMRT treatment that utilizes a beam energy of 6MV?