Questions were based on your past work experience.
What was the roles & responsibilities,
Concepts of Agile Methodology,
Either Broadband/Mobile/PSTN portfolio understanding & conceptual based questions.
Must Have :
Understanding of the E2E Journey of any one portfolios: BB, Mobile, PSTN
Details step by step process involved in the E2E Journey for any usecase of your choice. components Involved in that journey and the respective Functionality.