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What is the core interface implemented by HashSet<T>?
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Posted Date :
April 27, 2011
ICollection<T> is the core interface implemented by HashSet<T>
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What is the core interface implemented by HashSet
The core classes for User Interface is located in which namespace?
System.Windows.Shapes namespace defines UI classes like Line, Rectangle,etc.
what kind of access modifiers are assumed to inside the interface?
why cant we specify the accesibility modifier for methods inside the interface?
They all are public
What is the difference between interface and abstract class ?
a class may inherit several interfaces, a class may inherit only one abstract class
What is difference between interface inheritance and class inheritance?
We can only inherit from one class but multiple interfaces. In addition, an interface does not contain any implementation it just contains a series of signatures.
What is difference between abstract class and an interface?
An Abstract class is a class with some common/certain implementations and defines abstraction for other services which are implemented in its concrete sub classes, whereas interface only have method declaration with zero implementations. An abstract class and Interface both have method only but not have body of method. The difference between Abstract class and An Interface is that if u call Abstract class then u have to call all method of that particular Abstract class but if u call an Interface then it is not necessary that u call all method of that particular interface. An abstract class is a special kind of class that cannot be instantiated. So the question is why we need a class that cannot be instantiated? An abstract class is only to be sub-classed (inherited from). In other words, it only allows other classes to inherit from it but cannot be instantiated. The advantage is that it enforces certain hierarchies for all the subclasses. In simple words, it is a kind of contract that forces all the subclasses to carry on the same hierarchies or standards.
An interface is not a class. It is an entity that is defined by the word Interface. An interface has no implementation; it only has the signature or in other words, just the definition of the methods without the body. As one of the similarities to Abstract class, it is a contract that is used to define hierarchies for all subclasses or it defines specific set of methods and their arguments. The main difference between them is that a class can implement more than one interface but can only inherit from one abstract class. Since C# doesn't support multiple inheritance, interfaces are used to implement multiple inheritance.
Can you describe IUKNOWN interface in short ?
Every COM object supports at least one interface, the IUnknown interface. All interfaces are classes derived from the base class IUnknown. Each interface supports methods access data and perform operations transparently to the programmer. For example, IUnknown supports three methods, AddRef, Release(), and QueryInterface(). Suppose that pinterf is a pointer to an IUnknown. pinterf->AddRef() increments the reference count. pinterf->Release() decrements the reference count, deleting the object when the reference count reaches zero. pinterf->QueryInterface( IDesired, pDesired) checks to see if the current interface (IUnknown) supports another interface, IDesired, creates an instance (via a call to CoCreateInstance()) of the object if the reference count is zero (the object does not yet exist), and then calls pDesired->AddRef() to increment the reference count (where pDesired is a pointer to IDesired) and returns the pointer to the caller.
what is the difference between a class and a interface?
You can instantiate a class but you cannot instantiate an interface,you can only offer the funtionality of that interface not the implementation.
What is SLIP (Serial Line Interface Protocol)?
It is a very simple protocol used for transmission of IP datagrams across a serial line.
What are the core WPF assemblies?
The core WPF assemblies are,
WindowsBase.dll:- It defines the core types constituting the infrastructure of WPF API.
PresentationCore.dll:- Defines numerous types constituting foundation of WPF GUI layer.
PresentationFoundation.dll:- It defines WPF control types, animation & multimedia support, data binding suport and other WPF services.
Besides these three libraries WPF also uses an unmanaged binary called milcore.dll which acts as a bridge between WPF assemblies and DirectX runtime layer.
Which assembly represents the core LINQ API?
System.Query.dll assembly represents the core LINQ API.
Fiber Distributed Data Interface(FDDI)?
Provides high performance and multiple stations networking
Widely used in Metropolitan Area network
Based on token ring architecture
Copper Distributed Data Interface (CDDI)?
Version of FDDI
Uses twisted-pair copper cable instead of fiber optic cable
Official name - Twisted-Pair Physical Medium-Dependent (TP-PMD)
Only two types of cables are supported by ANSI standard for CDDI:
SMDS Interface Protocol (SIP)?
1. Connectionless service.
3. Used for communication between CPE and SMDS carrier equipment.
4. Based on IEEE 802.6 Distributed Queue Dual Bus (DQDB) standards .
5. Consists of three levels:
SIP Level 3
SIP Level 2
SIP Level 1
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