Describe a project that you were part of... Ask technicals relevant to that. Couple of questions about coding tools and stacks that you are comfortable with. The interview proceeds as per the level of detail you provide.
Pretty much describe how you would go about troubleshooting network issues. Where do you start and finish etc. i.e. what is your methology. How do you collaborate etc. Describe technologies you worked on. How do you deal with conflict.