Which of the following functions has an unsigned byte variant? (taking GLubyte as arguments)

Does gluProject use the current matrix stack?

What does glPassThrough() do?

In which version of OpenGL, GLSL was introduced as a core feature?

Is gluBeginPolygon the same as glBegin(GL_POLYGON)?

Which one might be used to draw VBOs?

What are the four types of clearable buffers?

In the best practice, what code should appear at the top of a GLSL shader?

What is the use of glGet?

What does glViewport do?

Does OpenGL provide physics, particle systems and other real-time procedural effects out of the box?