Network services have been used for several years in order to facilitate communication between two or more computers . This in order to share resources, whether they are hardware or software such as programs, applications, information, data, files among others.
These types of networks allow to share devices such as printers or programs with other computers connected to the network . An ideal tool for the most companies or houses of studies where they have to share the same information on several teams.
All this has been designed with the aim of facilitating communication between users, and in turn improving data security and integrity . According to all this, here we explain a little more about these networks and which of them exist today.
Index:
What is a network service and what is it for in computing ?
Network services are a set of computers and softwares connected between yes through physical or wireless devices where are responsible for sending or receiving information by means of electrical impulses or electromagnetic waves to be able to transport data. Usually they usually share resources, information and offer some special services .
All this is also known as a computer network, computer network, computer network or communication network , where a sender, a message, the medium and a receiver are required for its operation.
These types of networks were created with the purpose of being able to share information from a distance through a process that provides reliability and security, as well as being able to increase the speed of data transmission .
One of the clearest examples of this type of network is the Internet , which we use every day without knowing that it is one of the world’s largest computer networks. This is how every day there are millions of computers connected at different points and interconnecting to share information and resources with each other.
It is important to mention that the operation of all this is due to the different computer standards , such as the TCP / IP, which is used as a reference to OSI model.
How does a service work within a network and what is its importance?
Computer networks are a set of computers or interconnected devices that allow what is the exchange of information and resources between them , that way you can use a single printer or a hard drive from several devices, among many other elements.
WiFi networks are another network service , but wirelessly , and it should be mentioned that it works completely equal to the traditional network services . Therefore, for the operation of this service it is necessary to have five fundamental components, which we will explain to you below:
Issuer
To start this process it is essential to have the first piece, in this case it is the sender who will be the create the signal or request from the computer.
Encoder
Next, this request must go through the encoder , who is responsible for encoding the signal so that it can be transmitted over the cable > and thus reach its destination.
Line
In the case that a wireless network is used, the transmission media will be radio frequency or infrared waves . They are responsible for transmitting the information received to the address of the device that has been indicated from the interface.
Decoder
When information or resources are to be shared, the device that will receive this information also has its own system to convert each of the electrical signals into data that can be processed by the computer >. These are usually the PCI or network adapters, mostly come integrated in the CPU motherboard and work with different types of speeds.
Receiver
Finally, when the information or resources have gone through all these processes , the receiving device receives the signal that the sender has transmitted and which has been processed and converted into data that can be read by the computer .
What are the types of services on a network that exist?
Network services are configured in local networks so that they can be in charge of maintaining security and stable and correct operation , this is how they are responsible for Help the local network to make it work smoothly. There are currently different types of services in a network, which we will show you next.
Dynamic Host Configuration Protocol (DHCP)
This protocol is a standard of the Internet Engineering Working Group , which is designed to reduce what is the administrative burden and in turn the complexity of the configuration of the hosts in what are the transmission control protocols that are based on the network.
As for the process of configuring this protocol it is usually done automatically every time the equipment:
- Use client computers to request and accept configuration information TCP / IP from DHCP servers .
- It is responsible for managing IP addresses and other configuration related parameters.
- You are constantly using DHCP transmission agents to be able to transfer information between DHCP server and client .
Simple Network Management Protocol (SNMP)
This standard is mainly used for what is TCP / IP network management, where it is currently one of the most popular thanks to its simplicity of implementation, as well as the reduced time consumption required by the processor and network resources.
It currently has a more advanced version known as SNMPv2 , which is compatible for OSI-based networks. This protocol works at through the message sent to what is known as Data Unit protocols to different sites on the network, where it is made up of two elements, such as agents and workstations .
In this case the agent refers to what are the elements incorporated into network devices such as servers, router, switches , among others. They are responsible for collecting all information locally and in turn storing it for the next accesses . Where each of the agents has a relevant local information base, which is called “Management Information Base” .
Emails are made up of two subsystems , one of them is user agents and the other agents are message transfer . In the case of user agents , they are known as a mail reader that accepts different commands in order to receive and answer messages.
Some of them present a very well designed interface that works through icons or menus, while others work by commands of a character from the keyboard. However , as for the function both are equal.
In the case of the message transfer agents , they are responsible for transferring the email message between the hosts , using the protocol Simple transfer of email or SMTP. Usually, messages usually go through different MTAs as they move to reach their destination.
File transfer protocol (FTP)
This protocol is responsible for providing users with a simple and fast way to transfer information between computers through an Internet network where uses TCP, IP and the protocol transmission control, which are responsible for performing the functions of uploading and downloading files.
Currently the TCP / IP is one of the most important protocols on the Internet, while IP is responsible for directing the traffic to different Internet addresses. In the case of FTP it is necessary that the two ports are open , that is the server and the client so that what is the exchange of information can be facilitated.
Therefore, when FTP is used , the computer communicates with the number of port next to it to receive information from the controller , so as the IP address to which you want to transfer the file .
Domain Name System (DNS)
Finally, we have the DNS, which is the one that allows to translate the name of a website or a domain into an I P address so that it can be found more easily by users. In the same way this server executes a process where the URL or web address with the set of database performs a conversion to what is the IP address .