What does the sealed keyword mean when applied to a method in C#?

True or False: It is true that string a reference type?

Which method of the SQLDataAdapter object can be used for data retrieval?

How does an interface differ from a class?

What modifier to add instead of '....' to become a true code? public class ClassA { .... int x = 10; } public class Program : ClassA { static void Main(string[] args) { ClassA ob = new ClassA(); Program cc = new Program(); cc.x = 12; ob.x = 19; } }

What is the difference between Convert.ToString() and ToString()?

Two users, Monique and James are using an MIS system implemented using ADO.NET. The data refresh time in the system is set to 15 minutes. James changed the mailing address of a customer named Majda, and updated the database. Before the database refresh, Monique also updated the same customer's address as per her pending requests folder. What will happen when Monique saves the changes?

Which of the following is the best way to measure the performance of a function?

Which of the following are not C# value types?

If i == 0, why is (i += i++) == 0 in C#?

Which of the following is the correct statement to combine two URL(s)?