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Network Interface Card (NIC)?
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Posted Date :
March 31, 2010
1. Hardware device used to connect different computers on Network.
2. Serves as a link for sending and receiving data on a network .
3. MAC address is address assigned by IEEE to identify network card.
You can also find related Interview Question to
Network Interface Card (NIC)?
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 are the major data structures used in RDBMS, Network data model & Hierarchical data model.
RDBMS - Array (i.e. Array of structures)
Network data model - Graph
Hierarchical data model - Trees
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 do you mean by network communication standards?
Network communication standards are certain rules and specifications framed by standard organisations for manufacturing network hardware and developing network software.
Major communication standards have been formed by the organisations like ISO, IEEE etc.
What is SLIP (Serial Line Interface Protocol)?
It is a very simple protocol used for transmission of IP datagrams across a serial line.
In an IP address can a network ID be 127?
No, a network ID can't be 127. Because 127 is not assigned to any IP address classes. It is reserved.
What is datagram in a TCP/IP network?
At the network layer of TCP/IP model the data unit created is called the datagram.
The core classes for User Interface is located in which namespace?
System.Windows.Shapes namespace defines UI classes like Line, Rectangle,etc.
1.Interconnection of two or more computers and peripherals
2.Allows user to share and transfer information
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