Network services have been used for several years with the aim of being able to facilitate communication between two or more computers. This in order to be able share resources, whether they are hardware or software What programs, applications, information, data, files among others.
These types of networks allow share devices such as printers or programs with the other computers connected to the network. An ideal tool for most companies or study houses where they have to share the same information on several computers.
All this has been designed with the aim of being able to facilitate communication between users, and in turn improve data security and integrity. In accordance with all this, here we explain a little more about these networks and which of them exist today.
What is a network service and what is it for in computing?
Network services are a set of equipment and software connected to each other yes through physical or wireless devices where they are responsible for send or receive information through electrical impulses or electromagnetic waves to be able to perform the transport of the data. They are usually share resources, information and offer some special services.
All this is also known as a computer network, computer network, computer network or communication networkwhere it is required a sender, a message, the medium and a receiver for its operation.
These types of networks were created with the purpose of being able to share information at a distance through a process that provides reliability and security, as well as power increase the speed of data transmission.
One of the clearest examples of this type of network is the Internetwhich we use daily without knowing that it is one of the largest computer networks in the world. This is how they exist daily millions of computers connected at different points and that interconnect to be able share information and resources one with the others.
It is important to mention that the operation of all this is due to the different computer standardsas it is 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 devices interconnected with each other that allow what is the exchange of information and resources between themthat way you can use a single printer or a hard drive from various devices, among many other elements.
WiFi networks they are another network servicebut of wirelesslyand it is worth mentioning that it works completely the same as traditional network services. Therefore, for the operation of this service it is necessary to have five fundamental components, which we explain below:
Transmitter
In order to start this process it is essential to have the first piece, in this case it is the transmitter who will be who create the signal or request from the computer.
encoder
Next is request must go through encoderwho is in charge of encode the signal so that this can be transmitted through the wire and so reach your destination.
Line
In the event that a wireless network the means of transmission will be radio waves or infrared. They are in charge of transmitting the information received to the address of the device that has been indicated from the interface.
decoder
When information or resources are going to be shared, the device that is going to receive this information also has its own system to be able to convert each of the electrical signals into data that can be processed by the computer. These are usually the PCI or network adapters, are mostly integrated into CPU motherboard and they work with different types of speeds.
Receiver
Finally, when 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 be read by the computer.
What are the types of network services that exist?
network services are configured in local networks so that they can take care of maintain safety and stable and correct operationThis is how they are in charge of helping the local network so that it works without problems. Currently there are different types of services on a network, which we are going to show you next.
Dynamic Host Configuration Protocol (DHCP)
This protocol is a Internet Engineering Task Force standardwhich is designed to be able to reduce what is administrative burden and in turn the complexity of the configuration of the hosts in what they are transmission control protocols which are web based.
Regarding the configuration process of this protocol It is usually done automatically every time the computer:
- uses client computers for request and accept configuration information TCP/IP from DHCP servers.
- takes care of manage IP addresses and other parameters related to configuration.
- You are constantly using DHCP relay agents in order to transfer information between the DHCP server and the 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 consumption time which requires the processor and network resources.
Currently has a more advanced version known as SNMPv2which is compatible for OSI-based networks. This protocol works through the sent message 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, routers, switches, among others. They are responsible for collecting all the information locally and, in turn, storing it for the next accesses. Where each of the agents has a local base of relevant information, which is called “Management Information Base”.
The e-mails are made up of two subsystems, one of them are the user agents and the other the message transfer agents. In the case of user agentsare known as a mail reader that accepts different commands to be able to receive and reply to messages.
Some of them present a very well designed interface that works through icons or menus, while others work for one-character commands from the keyboard. However, in terms of function both are the same.
In the case of message transfer agentsthey take care of transfer email message between hostsfor this they use the Simple Email Transfer Protocol or SMTP. In general, the messages usually go through different MTAs as they go to reach their destination.
File Transfer Protocol (FTP)
This protocol is responsible for providing users with a simple and fast way to be able to transfer information between computers over an Internet network where do you use TCP, IP and Transmission Control Protocol, which are in charge of carrying out file upload and download functions.
Currently the TCP/IP is one of the most important protocols on the Internet, while IP It is responsible for directing traffic to the different Internet addresses. In the case of FTP it’s necessary that both ports are opennamely the server and the client so that what is the exchange of information.
Therefore, when using the ftpthe computer carries out a communication with the number of port next to it to receive driver informationas well as the IP address to which you want to transfer the file.
Domain Name System (DNS)
Last we have the DNS, which is what allows translate a website or domain name into an address IP so that it can be found more easily by users. In the same way this server runs a process where the URL or web address with the set of data base make a conversion for what is IP address.
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