Canvendor interview questions

Firstly it was a telephonic call, followed by a virtual call..they asked qns like smoke testing, sanity testing, SDLC, bug lifecycle, black and white box tetsting and what deffered in bug life cycle..explain about preconditions of a testcase

First, HR Round with normal introduction. Second, Coding Round with five questions - Two program questions and three definition. Find palindrome Swap two numbers without temporary variable Inheritance explanation Access modifiers difference Pillars of object oriented programming Technical Round - questions like synchronisation, SQL queries asked