I applied online. The process took 4 weeks. I interviewed at Cognizant (Buenos Aires) in May 2019
Interview
They interviewed me personally, they did an ABBA skills English test.
They asked me about ABAP objects, interfaces, forms, etc.
They asked me about development processes, implementation of work methodologies.
They asked me about ticket resolution processes.
They asked me about good practices and performance at ABAP.
I applied online. The process took 2 weeks. I interviewed at Cognizant (London, England) in Dec 2020
Interview
More of functional rather than technical .tcodes of the functional modules were asked which is very difficult for an abapers to remember all the tcodes. Nothing which was specific to advertisement was asked.
I applied through other source. I interviewed at Cognizant (Bengaluru) in Mar 2018
Interview
There are 2 technical Rounds followed by HR Round.
First Round is only technical Round and they have been asking the Core ABAP Questions
second round was both technical and managerial round followed by HR discussion.