они здесь какие-то, проливающие свет:

We gave CT Labs several "guiding light" questions:

1. How easy is the video conferencing product to install and set up from an administrative point of view?
2. How easy is it to use by a new end-user?
3. How does the video conferencing product perform with respect to speech and video quality under clear IP channel with a variety of lighting and background noise conditions?
4. How does the video conferencing product perform with respect to speech and video quality under degraded IP channel with a variety of lighting and background noise conditions?
5. How effective and helpful is the video conferencing product's documentation package?
http://www.commsdesign.com/template_parts/right_col/story/sh...

This section lists the "guiding light" questions that we attempt to answer as a result of performing the test procedures and analysis for each BCS system.

1. How easy are these systems to install and set up at (a) the server, (b) a client workstation, and (c) an administrative console?
2. How easy are these system to administer and maintain?
3. How well-designed and easy to use is the graphical user interface for the (a) administrative maintenance program(s), and (b) the end-user client program(s)?
http://www.ct-labs.com/Review_methods_BCS.htm

наводящие вопросы - вокруг да около:
например,
когда кто-то забыл пароль
экзаменатор пытается подсказать