C# Programming Advanced Quiz 5
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Advanced Quiz 5
1. How do bitwise operations work in C#? Give an example use case.
Operations manipulating individual bits of integer types, used for flags, masks, or efficient calculations (e.g.,
&
,
|
,
^
).
Operations that compare two binary numbers.
Operations that convert numbers to their bitwise representation.
2. What is the concept of a "callback" in C#?
A method reference (delegate or lambda) passed as a parameter and invoked later, often for event handling or async operations.
A function that returns multiple values.
A function that calls itself recursively.
3. Explain "compiler optimization" and its potential impact on debugging in C#.
Optimizations can reorder or eliminate code, making debugging harder as the code may not match source lines.
Optimization refers to making the code more readable.
Compiler optimization only affects code size, not performance.
4. What is "inter-process communication in .NET, and name a method.
Mechanisms for processes to communicate (e.g., named pipes, memory-mapped files, WCF, sockets).
Communication between functions within the same process.
A method for network communication between different computers.
5. How is error handling typically done in C#?
By using exceptions (try-catch), error codes, or returning Result types.
C# has built-in exception handling similar to C++ or Java.
Errors are always handled automatically by the operating system.
6. Describe the build phases of a C# program.
Source code → Compilation to IL → Assembly generation → JIT compilation at runtime.
Lexing, Parsing, Execution.
Only compilation and linking.
7. What is the significance of access modifiers (
public
,
private
,
protected
, etc.) in C#?
They determine the visibility and accessibility of types and members.
Define the data type of a variable.
Specify the memory address where a variable is stored.
8. Explain "dynamic binding" and its implications in C#.
Method calls are resolved at runtime, enabling polymorphism and dynamic scenarios (e.g., with virtual methods or the
dynamic
type).
A rule that prohibits any form of pointer aliasing.
A rule specific to multi-threaded programming.
9. What is the purpose of the
async
/
await
keywords in C#?
They simplify asynchronous programming by allowing methods to be suspended and resumed without blocking threads, typically working with
Task
and
Task<T>
.
They are used only to create new threads manually.
They guarantee faster execution for any method.
10. What is a common use case for the
[Flags]
attribute on an
enum
in C#?
Representing combinations of options using bitwise operations (e.g., permissions or feature toggles using
&
and
|
).
Ensuring an
enum
can only have a single value at a time.
Automatically converting
enum
values to strings.
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