What keyword do you use inside a switch statement to handle any cases not explicitly specified by case clauses?

A class declared in a namespace can be declared as public, for example namespace People { public Employee { /* ... */ } } Which other access modifiers could alternatively be applied to this class, instead of public?

What do the following two lines of code demonstrate? string Substring (int startIndex) { /* ... */ } string Substring (int startIndex, int length) { /* ... */ }

What does this statement do? using System;

What will the following code display? int p = 10; Console.WriteLine(p is long);

Given the following statement: public enum Days { Monday, Tuesday, Wednesday, Thursday, Friday, Saturday, Sunday } What is the numeric value of Days.Wednesday?

What type of code is written to avail the services provided by Common Language Runtime?

One of the ternary operators provided in C# is:

Which object oriented term is related to protecting data from access by unauthorized functions?

What will happen if the following code is compiled in .NET 4 or above (Assume required namespaces are included)? public class var { } public class main     public static void main(string[] args)     {    var testVar = new var(); }}

There is a class that has a public int counter field that is accessed by multiple threads. This int is only incremented or decremented. To increment this field, three thread-safe approaches are mentioned below: A) lock(this.locker) this.counter++; B) Interlocked.Increment(ref this.counter); C) Change the access modifier of counter to public volatile Which statement is incorrect with regards to these approaches?