Network services have been used for several years in order to facilitate communication between two or more computers. This in order to be able share resources, either hardware or software as programs, applications, information, data, files among others.
These types of networks allow share devices like 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 of this has been designed with the aim of being able 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 between yes through physical or wireless devices where they are responsible for send or receive information by means of 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 of this is also known as a computer network, computer network, computer network or communication network, where it is mandatory 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 Internet, which 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 they 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 standards, as it is 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 devices interconnected with each other 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 various devices, among many other elements.
WiFi networks they are another network service, but from wireless way, and 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:
To be able to start this process, it is essential to have the first piece, in this case it is the transmitter who will be who creates the signal or request from the computer.
Then this request must go through encoderwho is in charge of encode the signal so that it can be transmitted over the cable and thus reach their destination.
In the event that a wireless network means of transmission will be radio frequency waves or infrared. They are responsible for transmitting the information received to the address of the device that has been indicated from the interface.
When information or resources are 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, mostly come integrated into CPU motherboard and they work with different types of speeds.
Finally when information or resources have gone through all these processes, the receiving device receives the signal transmitted by the sender and which has been processed and converted into data that can 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 keep safe and stable and correct operationThis is how they are in charge of helping the local network so that it works smoothly. 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 standard, which is designed to be able to reduce what is the administrative burden and in turn the complexity of the hosts configuration what they are transmission control protocols that are web-based.
Regarding the configuration process of this protocol it is usually done automatically each time the equipment:
- Use client teams for request and accept configuration information TCP / IP from DHCP servers.
- Takes care of manage IP addresses and other parameters related to the configuration.
- You are constantly using DHCP relay agents to be able to transfer information between DHCP server and client.
Simple Network Management Protocol (SNMP)
This standard is used mainly 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 reduced consumption time what does 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 through the message sent what is known as Data Unit protocols to different web sites, 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 collect all the information locally and in turn store 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 agents, are known as a mail reader that accepts different commands in order to receive and reply to messages.
Some of them have 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 agents, take care of transfer the email message between hosts, for this they make use of Simple email transfer protocol or SMTP. In general, the messages tend to 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 be able to transfer information between computers over an Internet network where you use TCP, IP and transmission control protocol, which are responsible for carrying out file upload and download functions.
Currently the TCP / IP is one of the most important protocols on the Internet, while IP takes care of direct traffic to various Internet addresses. In the case of FTP it’s necessary that the two ports are open, that is to say the server and the client so that what is the exchange of information.
Therefore, when you use the FTP, the computer communicates with the number of port that is next to it to receive the controller information, as well as the IP address to which you want to transfer the file.
Domain Name System (DNS)
Last we have the DNS, which is the one that allows translate the name of a website or domain 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 the IP address.
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