Network Rail Graduate Civil Engineer interview questions

I passed the online test and finished the video interview. And now I still waiting the feedback of the video interview. I did not feel very well for this interview cause some of these questions I have not faced before.

Application, online tests, online interview, assessment centre. A pleasant experience all round, look forward to working in the company as a result. The assessment centre was the most challenging of these stages. I believe that the online interview is a new stage require for some applicants this year( 2014/2015).