2009 Q3 - Aspects and indications

[PJW]

It certainly appears that you have a pretty good grasp of UK mainline railway signalling; there are many in the UK signalling industry who have far worse knowledge. This indeed is essential underpinning information needed for the IRSE Exam, but it deliberately goes beyond that and requires candidates to demonstrate a fuller understanding that can really only be built up by experience. This is where a significant number of years undertaking a variety of roles is extremely useful. However you are right and part of it is critically examining the question to determine precisely what it means and to work-out why it has been asked in the way it has and this is certainly a skill that gets honed with practice.

Thanks for your time and your advice. To be honor with you, I am building up the knowledge and somehow cannot think through and because of insufficient knowledge of experience operation, maintenance and etc. The given comments will probably help trigger my mind to rethink the way to answer and develop my thinking process.