Question 1

Adding an abstract modifier to a class prohibits other classes from deriving from that class.

Accepted Answer

An abstract modifier indicates that a class is intended only to be a base class of other classes, not that it is prohibited from being inherited.

Question 2

ILDASM,which must be run from the command line,is a tool used to view an assembly.

Accepted Answer

False

Question 3

You cannot spread the definition of your classes over multiple files using the partial keyword.Partial classes are reserved for use by the IDE.

Accepted Answer

Partial classes are not only reserved for use by the IDE. They can be used to split the definition of a class over multiple files, making it easier to manage large codebases.

Question 4

It is not necessary to add a reference to a .dll file if the file is stored in the same project subdirectory.

Accepted Answer

Even if a .dll file is stored in the same project subdirectory, you still need to add a reference to it in your project to properly use the functionalities provided by the .dll. This is because the .NET runtime needs to know about the assembly and its types to use them, regardless of the physical location of the .dll file.

Question 5

Partial classes enable a class to be split into two or more files and combined when the application is compiled and ran.

Accepted Answer

Partial classes allow portions of a class to be split into separate files, and are combined by the compiler when the application is compiled and run.

Question 6

When you override a method,the signatures of the methods must match.

Accepted Answer

When you override a method, the signature of the overridden method in the subclass must match the signature of the method in the superclass, including the method name, the number and types of parameters, and the return type.

Question 7

The reserved word base,placed in the constructor heading before the opening curly brace,is used to indicate the base class constructor should be called.

Accepted Answer

The reserved word "base" is used in the constructor to call the constructor of the base class. It is placed before the opening curly brace to indicate that the base class constructor should be called before any other code in the derived class constructor is executed.

Question 8

Generics enable you to identify where data will change in the code segment by putting a placeholder in the code for the type parameters.

Accepted Answer

This is true. Generics allow you to declare a class or method with placeholders for the type of data it will work with, and then fill in those placeholders with specific types when the code is used. This enables you to create code that can work with different types of data without having to duplicate the code for each type.

Question 9

The Global Assembly Cache (GAC)stores assemblies designated to be shared by several applications.

Accepted Answer

The Global Assembly Cache (GAC) is a central location in the .NET Framework where assemblies intended to be shared by several applications are stored. This includes system-level components and third-party libraries that multiple applications may use. The GAC is designed to ensure that these shared assemblies are available to all applications on a system and to provide a secure and controlled environment for their use. Therefore, the statement is true.

Question 10

Today applications are normally designed to be single,self-contained,monolithic programs.

Accepted Answer

Today's applications tend to be designed as distributed systems with multiple services, each potentially running on different machines and communicating with each other through APIs or other network protocols. This allows for greater scalability, fault tolerance, and flexibility, as well as easier development and deployment. Monolithic programs are typically harder to maintain, harder to scale, harder to update, and have a higher risk of failure or downtime.

Question 11

For classes of animal and dog,animal would be considered the derived class.

Accepted Answer

Dog is a subclass of animal, so animal is the superclass or base class. Therefore, animal is the ancestral or "parent" class, making it the base class.

Question 12

Encapsulation enables multiple implementations of the same behaviors so that the appropriate implementation can be executed based on the situation.

Accepted Answer

Encapsulation is a concept in object-oriented programming that involves bundling the data (attributes) and methods (functions) that operate on the data into a single unit or class and restricting access to some of the object's components. It does not directly deal with enabling multiple implementations of the same behavior; that concept is more closely associated with polymorphism.

Question 13

Components that can be referenced from any number of applications are created as class library files with a dynamic link library (DLL)extension.

Accepted Answer

Class library files with a DLL extension can be referenced and reused across multiple applications.

Question 14

An overloaded method must have exactly the same signature as the method it is overriding.

Accepted Answer

An overloaded method must have same method name but different signature (i.e., different parameters or different datatypes of parameters) as the method it is overloading. Overriding, on the other hand, must have same method name and same signature.

Question 15

Protected access enables derived classes to have access to change data in the base class.

Accepted Answer

Protected access allows derived classes access to protected members of the base class, which includes the ability to modify data.

Question 16

Constructors,which use the same identifier as their class,are normally defined with protected access.

Accepted Answer

Constructors are not typically defined with protected access by default; they can have any access modifier (public, private, protected), but the most common practice is to use public access to allow instantiation of the class from outside its package.

Question 17

Class library components should be compiled using a Build option instead of Running the application.

Accepted Answer

Class library components should be compiled using Build option to generate a DLL (Dynamic Link Library) which can be used by other applications. Running the application will only execute the code without generating a DLL.

Question 18

When you have a method that has the same name in both the base and derived classes,use the keyword super to refer to the method in the base class.

Accepted Answer

The answer of When you have a method that has...

Question 19

Access to members that have been defined with the public access modifier is restricted to members of the current class.

Accepted Answer

Access to members that have been defined with the public access modifier is not restricted to members of the current class, it can be accessed by any code in the same assembly or another assembly that references it.

Question 20

Once a DLL is available,any application can add a reference to the DLL.The referenced file with the .dll extension becomes part of the application's private assembly.

Accepted Answer

When an application references a DLL, it becomes part of the application's private assembly. This means that the application will be able to access the DLL and its functionality without other applications or users being able to interfere or modify the DLL.

Quiz 11: Advanced Object-Oriented Programming Features