Interview questions for Tier 5 Temp Worker Visa Application - Graphic Designer

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Dear Friends,

What could be the interview questions for a Visa Applicant Tier 5 Temp Worker visa, one of my friend had received an interview call, he a young graphic designer and mostly he has learned from online channels, luckily he got a job in UK and now be appearing for an interview at VFS Online by some Home Office Rep.

It would be great to share your experience for him so that he could prepare himself accordingly.

Thanks