Detail question(80questions) about oop which is not usful in real world application
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What are the differences between value type and reference type?
c#- dependency injection, oops -encapsulation, abstraction vs interface, access modifiers, sealed class vs private class, filters, routes, constant vs readonly vs static, ref vs out sql- index, sp vs function, null vs is null, optimise. code -- 1. Table:tblFru, columnName: Name, values: Apple, Orange Table:tblVeg, columnName:Name, values: Brinjal, Cauliflower Output: "Apple - Brinjal" "Apple - Cauliflower" "Orange - Brinjal" "Orange - Cauliflower" Select from tblFru cross join tblVeg 2. who don't have an address. t- employ -name t-add -for(e) Select name from e left join add on e.id=add.EID where add=null 3. salary -t 3rd high with x as ( Select *, Row_number over (partition by s order by a) from ) 4. try { throw new ArgumentNullException(); } catch(Exception ex) { throw new ArgumentNullException(); } catch(ArgumentNullException ex) { throw new ArgumentNullException(); } 5. Public int Add(int a, int b) { return a+b; } Public int Add(long a, long b) { return a+b; } Add(1,2) 6. Public int Add(int a, int b) { return a+b; } Public string Add(int a, int b) { return "a+b"; } String s = Add(1,2) 7. Interface IA { Int Add(int a, int b) } Interface IB { Int Add(int a, int b) } Class C: IA, IB { int Add (int a, int b) { return (a+b); } } 8. int a=2;, int b=3; ,* ,pre for ( var i=1; i
oops, c#, design patterns
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What are the varios ways that dependenct injection can be achieved
normally they asked normal question like oops asp.net core MVC web api thread asynchronous and others...
1) Right from the code we write till the code is compiled and executed, can you explain what happens behind the scenes? 2)What is managed and un-managed code? How unmanaged code is produced if we are writing the code in Visual Studio itself? 3) Where are the session variables, cache saved? 4) Where are the view state variables saved? 5)I visited a website using id and password in Google Chrome, I want to login to the same website in Internet Explorer without typing id and password, is it possible? if yes the how? 6) Questions in Interface, Polymorphism. 7) How does Facebook feed work? I upload picture and it shows up to your friend without him doing anything on the server? Can you explain? 8) I have a customer and he calls up and says that his application has been running slow, what are the best solutions that you propose? 9) In Banking applications as you have seen sometimes, your bank balance might show different that it actually was, it happens very rarely, why such things happen? 10) I have a variable of int type, is it possible to create user defined data type like int, float in .net? Explain.
Questions on application of Clustered and non cluster index
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