EPAM Systems Senior Software Engineer interview questions

What are Func and Predicate delegates. Difference between null and undefined in Javascript. JWT Token - Three important parts -Header,Subject,Signature and all are in encoded form . How to create a JWT Token . What are Prototype methods in Javascript. How to Detect changes made to all public properties. Jquery to find odd rows of table and apply css to background. Can we have a parameterised static constructor. HasTracking in Entity Framework . how can we call a constructor of abstract class. ViewChild and ViewChildren Declare in Angular Behavioral Subject in Angular vs Observable Subjects in Angular - An RxJS Subject is a special type of Observable that allows values to be multicasted to many Observers. While plain Observables are unicast (each subscribed Observer owns an independent execution of the Observable), Subjects are multicast. A Subject is like an Observable, but can multicast to many Observers. Difference between let and Var Difference between null and undefined . Difference between use and Ruun in .net core. Difference between ConfigMethod and Config Services. Write SQL to LINQ Queries --> join two tables and apply group by. IEnumerable and IQueryable Download huge files using Web API

SOLID, async/await, patterns, entity framework