Network in Communication The importance of network communication, The pattern of communication between the members of the organization and the flow of information between them is the communication network. The network helps managers to establish communication of different patterns through communication flows. The network depends on the size of the organization, the nature of communication channels in the organization, and the number of people involved in the process. There can also be many types of communication networks.
What are networks and communications?
Data communications
is the transmission of digital data between two or more computers and a computer network or data network is a communications network that allows computers to exchange data.
Network
is a set of methods used by users to pass on valuable information and a communication network is the sum of all the means and methods used by the organization to communicate.
The patterns and methods used by the members of the organization to pass the information to the desired nodes in the organization where the networks are convenient and it helps the managers to track and create different types of communication flow according to the requirements.
Network communications have developed technological changes in communication and communication network infrastructure. The terminals of human-machine communication are indispensable for diverse communication services and management of the three-pronged network functions contained within it, transmission, switching, and storage, all are required of infrastructure and there has been a huge number of technological change in Every generation alternates even nowadays, a technological change is afoot that must be manifested by shifts of the social paradigm.
The importance of network communication
The importance of the communication network began since the Internet technology is constantly evolving and users are looking for increasingly sophisticated services, and communication networks must be able to support an increasing number of new devices, data, and voice and video applications with high bandwidth requirements, and many well-known network service providers are cooperating with Their partners build high-quality, integrated, reliable, fault-tolerant, resilient, and efficient communication networks.
Network applications
Data Center Networks
The data center is more important today than ever with the demands of improving productivity, accelerating business processes, and implementing change effectively through a high-quality computer network.
Wireless networks
In practice, it requires the integration of wired and wireless networks into a single entity that supports all current standards and provides the necessary upgrade to the capabilities and future needs of the business organization.
Network video conferencing
These solutions are very popular in a number of business organizations because they save a lot of time and money.
(VoIP / IP telephone)
Using a single network infrastructure to carry data and voice has many advantages such as eliminating the need to maintain two separate systems (the traditional telephone network), lowering telephone costs, and avoiding duplex cables.
FoIP Technology
Fax over IP increases throughput by 90% over traditional fax machines.
Network Monitoring
Successful network monitoring starts with a well-designed network and continues with carefully selected and customized monitoring software tools The control and management of large systems are very important for solving problems that affect network functions such as availability, fault tolerance, and security.
Network Access Control
A solution that ensures that each endpoint complies with network security rules before granting access to a network's IT resources.
Server Virtualization and Application Technology
In line with the prevailing trends in network technologies, many business organizations are now working with resource virtualization and business application acceleration technologies.
Types of computer networks in communications
1. Vertical Grid
Usually, the vertical network is between the superior and subordinate and vice versa, it is bi-directional communication and instant feedback is possible in this type of communication network and it is a formal network.
2. Circuit network
Under this network, two people communicate with each other and after receiving the message, the first person communicates the feedback message to the other party, so the communication takes the form of a circle and it is similar to the vertical network but in the circle network there are not necessarily superiors and subordinates.
3. Chain network
This communication network follows the organizational hierarchy and chain of command and all subordinates receive orders or instructions from their superiors.
4. Wheel network
Here all the subordinates receive orders from one superior and this is a highly centralized type of network where each subordinate receives orders or instructions from one or higher authority and wants immediate feedback.
5. Star Network
All group members communicate with each other and exchange information under the star communication network and this network is essential for group communication or where group work is involved, this network communication channel is open to all group members and members communicate with each other without hesitation.
A computer network connects computers together via an array of infrared light signals, transmitting radio waves, telephone lines, television cables, and satellite links. The challenge for computer scientists has been to develop protocols (standard rules for coordinating and exchanging messages) that allow processes running on host computers to interpret The signals they receive and engage in meaningful conversations in order to accomplish tasks on behalf of users.
Network protocols also include flow control, which prevents the sender of data from flooding the receiver with messages that have no processing time or storage space, and error control, which includes detecting transmission errors and automatic retransmission of messages to correct such errors.
Protocol standardization is an international effort and since it would be impossible for different types of devices and operating systems to communicate with each other, the main concern was that the system components (computers) be open. This term comes from the Open Systems Interconnection (OSI) standards developed by The International Organization for Standardization (OSI) Reference Model defines network protocol standards in seven layers, and each layer is defined by the functions it depends on from the layer below and the services it provides to the layer above it.
Layers of computer networks in communications
At the bottom of the protocol is the physical layer, which contains rules for moving bits over a physical link The data link layer handles standard-size packets and adds reliability in the form of error-detection and flow-control bits The network and transport layers divide and route messages into standard-sized packets The session layer supports interactions between applications on two communication devices, for example, it provides a mechanism to include checkpoints in a long file transfer so that in the event of a failure the data needs to be retransmitted only after the last checkpoint.
The presentation layer is concerned with the functions that encrypt data so that heterogeneous systems can participate in a meaningful connection and at the highest level are the protocols that support specific applications an example of this application is the File Transfer Protocol (FTP) which governs the transfer of files from one host to another.
The development of networks and communication protocols has also led to the emergence of distributed systems where networked computers share data and processing tasks. Replication improves availability and reliability.
History of computer networks
In the 1960s, computer networks were essentially synonymous with centralized computing and telephone services. The distinction between LANs and WANs did not yet exist as mainframes were usually networked to a series of stupid serial-connected terminals running on RS-232 or some other interface. If a terminal in one city needs to connect to a central computer in another, a long-range (300 baud) modem will use the existing analog PSTN to establish the connection.
The technology was primitive but it was an exciting period. However, the quality and reliability of the PSTN network increased dramatically in 1962 with the introduction of pulse code modulation (PCM), which converted analog audio signals into digital sequences of bits. The digital signal became zero and the base channel quickly (64). kilobits per second) and soon the entire hierarchy of the digital telephone system was built on this foundation, after which a device called a channel bank was introduced.
The development of the Network File System (NFS) by Sun Microsystems in 1985 led to the proliferation of diskless UNIX workstations with embedded (Ethernet) interfaces, which led to increased demand for (Ethernet) and accelerated the deployment of bridging techniques for partitioning local networks. In about 1985 AD, an increasing number of (UNIX) machines and local networks were connected to (ARPANET), which until that time was a network of mainframe and microcomputer systems.
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