Application layer design issues computer networks
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It is the top most layer of OSI Model. Manipulation of data(information) in various ways is done in this layer which enables user or software to get access to the network. Some services provided by this layer includes: E-Mail, transferring files, distributing the results to user, directory services, network resources, etc.
Functions of application layer
Mail services :
This layer provides the basis for E-mail forwarding and storage.
Network Vertual Terminal:
It allows a user to log on to a remote host. The application creates software emulation of a terminal at the remote host. User's computer talks to the software terminal which in turn talks to the host and vice versa. Then the remote host believes it is communicating with one of its own terminals and allows user to log on.
Directory Services :
This layer provides access for global information about various services.
File Transfer access and management :
It is a standard mechanism to access files and manages it. Users can access files in a remote computer and manage it. They can also retrieve files from a remote computer.
Functions of application layer
Mail services :
This layer provides the basis for E-mail forwarding and storage.
Network Vertual Terminal:
It allows a user to log on to a remote host. The application creates software emulation of a terminal at the remote host. User's computer talks to the software terminal which in turn talks to the host and vice versa. Then the remote host believes it is communicating with one of its own terminals and allows user to log on.
Directory Services :
This layer provides access for global information about various services.
File Transfer access and management :
It is a standard mechanism to access files and manages it. Users can access files in a remote computer and manage it. They can also retrieve files from a remote computer.
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When it comes to computer networking then here is what i can say .computer networking is a set of computers connected together for the purposes of sharing resources such as electricity ,or internet etc .
Networking is mostly used in places or offices where these is bulk use of computers
There are different types of networking ie the wide area networking and the local area networking
Routers is the method of achieving a network
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