C# 2 - Basic

This exam tests the developers C# knowledge. More advanced parts of the language are covered in the intermediate exam.

Because we are developers before being Java developers, this site welcomes interesting non-Java technologies that a (Java) developer might need in his career (JavaScript, Ruby and now ... C#).

C# is technically a very well though language. Liking Microsoft or not is another story that we don't want to debate on JavaBlackBelt.

	Released	Beta	Frozen
Arrays 2 questions Identify the three possible types of arrays in C#: One-dimensional Multidimensional Jagged Identify correct and incorrect statemes about the array types. Write code to instantiate the different array types correctly. Know the fact that all arrays are objects.	9	1	7	Add a question Beta questions
Classes 1 question Define a simple class according to the C# NamingConventions Use the using keyword to provide aliases for namespaces. Write static constructors for classes. Write nested classes. Write code that declares static classes.	12	8	6	Add a question Beta questions
Collections 2 questions Write code that uses the following collection classes (NO GENERICS): ArrayList Queue Stack Identify correct and incorrect statements about these three collections.	4	2	9	Add a question Beta questions
Control structures 3 questions Write code which makes proper usage of the: if-else for foreach while do-while switch structures.	3	4	13	Add a question Beta questions
Variable declaration 3 questions Know the differences between a heap and a stack variable. Understand that a reference points to an object. Understand and use the following variable types: int bool float double decimal char byte short string Identify the correct scopes for a variable(class,instance,method,local) Understand the difference between an object and a struture.	6	2	9	Add a question Beta questions
Boxing 2 questions Identify correct and incorrect statements about Unboxing/Boxing. Identify code that makes correct / incorrect usage of Boxing and Unboxing. Understand the fact that boxing costs performance. Recognize where boxing is used and where not.	2	1	7	Add a question Beta questions
Operators 3 questions Write code that uses the following operators: + - / * += -= *= /= ++ -- Write logical expressions that uses the following logical operators: != == ! &= && \| \|= Be aware of the difference between short circuit and normal expression evaluation. Write code that makes proper usage of the ternary operator.	4	3	11	Add a question Beta questions
Methods 2 questions Write code that defines methods according to the .NET Framework Design Guidelines NamingConventions: (ToString instead of toString in Java) Write code that declares a variable parameter list on a method Declare ref and out parameters for methods	4	1	14	Add a question Beta questions
Exception Handling 2 questions Use the try/catch/finally statement to handle exceptional program flows. Identify the order of try-catch blocks. Identify code that makes incorrect or correct use of try-catch-finally structures.	1	0	9	Add a question Beta questions
Garbage Collection 2 questions Identify the fact that the C# Language has a garbage collecting system. Write code that makes objects eligible for gc. Describe in short the GC algorithm and how to may force the garbage collector to start a garbage collection. Identify situations in which an object will be eligible for garabe-collection. Identify the disadvantages of finalizers. Know the fact the the compiler translates finalizers to a Finalize method which is not allowed to be written manually by the developer. Write code that declares finalizers. Use the methods of the Class System.GC to influence the GC process.	3	1	5	Add a question Beta questions
Resource Management 2 questions Write code that uses the using keyword to automatically release a IDisposable Object. Write code that implements the IDisposable Interface correctly. Identify the advantages of implementing IDisposable over using Finalizers and also the disadvantages of their usage	4	3	3	Add a question Beta questions
Objects 1 question Write Code that instantiates an object. Use the following objects to write code: System.String System.Object System.Text.StringBuilder Identify System.String as an immutable object. Identify the most important difference between a StringBuilder and a String. Identify System.Object as the root of all classes.	7	3	3	Add a question Beta questions