WPF Converters? ans implement iValueConvertor and implement Convert () & ConverrtBack() Command in WPF? ans Icommand iNotifyPropertyChange? ans it and explained UpdateSourceTrigger types of Resources? static vs dynamic How to Implement style? can one style implement on one page be used on another? ans yes if declared at window level MVVM architecture? Does MVVM follow SOLID principal? Yes PRISM? Dispatcher in WPF? AP vs DP? Types of Bindings in WPF? DirectEvents in WPF? ans all RountEvent in WPF is Multithreading possible in WPF? answered NO it follows STA how to make UI more responsive? answered Async and Await C# OOPS, concept? Var vs Dynamic? as and is operator ? how does compiler binds method to class? Multithreading in C#? if we want to implement progress bar as and when 100 threads do their work how shud we implement? WCF endpoints in WCF? explained A+B+C for endpoints types of binding? answered scenario based and which one to choose by flow diagram default instance mode in wcf? types of instance modes in WCF? SQL read uncommitted isolation levels? http://www.oracle.com/technetwork/testcontent/o65asktom-082389.html select case yes or no if null = null ACID properties https://hassanszone.wordpress.com/2009/03/04/acid-properties-of-sqlserver-2005/ Face-Face how would you design the Structure of multi-threaded environment to contain each Thread and its StackTrace.? Write Code to implement Enqueue and De-Queue method in a Queue and data can be added both in Front or End of Queue? Value types vs Reference Types? Design data structures and few queries to optimize them and insert data in a table designed by him and advantages/disadvantage of the two?