Cognizant Graduate Trainee Engineer interview questions

One round was aptitude and reasoning and second round is interview, the interviewer first asked me to introduced myself then start asking questions about HTML5, CSS3, Javascript in the depth

1 round technical interview asked about oops concepts, like object, classes, encapsulation, abstraction. Also asked question on sql query, like:- join, delete, truncate, 1 round technical interview asked about oops concepts, like object, classes, encapsulation, abstraction. Also asked question on sql query, like:- join, delete, truncate