Computer Network are connected thousands of computer. Firstly we understand what is networking?. In today's world, the customer's demands are increasing and their capacity to pay is also increasing. To trap this market manufacturers are rapidly increasing their production and are trying to satisfy customer's demands. For increased production, huge resources are required and there might be cases that all the resources are not available at a single location.
Organizations are spreading their offices geographically wider in search of better raw material, production environment, and market to consume their products. Growing facilities of transport are making it easy to transfer raw material and finished goods from one place to another but geographically separated locations might need to exchange data or information.
Computer Network Introduction
A computer network can be anything ranging from two interconnected computers to thousands of interconnected computers. The connection between computers can be permanent via cables or a temporary telephone line or other communications skills.
The name of the first computer network is ARPA Net
Uses Of Computer Network
Transformation of data from one place to another through traditional methods like post may be too slow or methods like fax may be too costly. Computer networking plays important role in serving these types of needs. The technology can be used effectively to transfer information from one computer to another, be it in a single building or widely separated locations. In a computer network, different devices are being shared by different computers that connect over to the network. Moreover, the communication of the computer helps us to share important information.
Need for Computer Network
The basic reasons for using network computers are:
To share resources such as file computers, disk storage, scanners, CPU.
To share application software like accounting software.
To exchange information such as email, message documents.
To have communication such as chatting, on-line meeting.
The physical distance between two computers can vary from a few feet to several thousand kilometers. A device called "Network Interface Unit" is attached to the motherboard of computing. This enables a computer to communicate with the other computers, situated in its surrounding.
The performance parameter of computer network are delivery, accuracy, timeline and jitter.
Advantages of Computer Networks
- Sharing Resources
- Cost Reduction
- Connectivity and Communication
- Centralized Software Management
- Higher Reliability and Backup
- Improved Performance
Sharing Resources
Computer networks not only provide the ability to share information like printer, scanner, CD-ROM, or software resources like application programs.
For example, using a computer network, an expensive laser printer can be shared among various employees in a department of a company instead of giving each employee a separate laser printer. Similarly, software resources like accounting software can be shared among users.
Cost Reduction
Resource sharing results in cost reduction as the cost of resources are shared. For example, Multiple individuals licensed copies of popular software programs can be costly. Network versions of the software are available at a relatively low cost. Moreover shared programs on a network allows at a relatively low cost. Moreover, shared programs on a network allow for easier upgrading on individual computers.
Connectivity and Communication
Networks connect computers and users of those computers. Once they are connected the user can communicate with each other. Users can communicate efficiently and easily via mails, video conferencing, Instant messaging, etc.
Centralized Software Management
Software loaded on one computer can be used by all other computers connected to that computer, thus eliminating the need to spend time and energy installing the same software on different computers. For example, If in a network, 20 users want to work with oracle then instead of installing oracle on each computer we can install it on a single central computer and make it shareable by others.
Higher Reliability And Backup
In a computer network, having an alternative source of supply to provide higher reliability is one of the aims.
Improved performance
Another advantage of using the network is that network performance can be increased for the same application by distributing the computational tasks on various computers.
Disadvantages of Computer Networks
- Data Security Concerns
- Network Implementation Cost
- Network Management and Administration costs
- Threat From Viruses
- Illegal Behaviour
Data Security Concerns
A poorly secured network puts critical data at a risk. For example when files are shared among users then there is always a threat that unauthorized users can alter or use sensitive data. The responsibility of the network administrator to take care of such threats by issuing proper permissions to various users and properly implementing the network which improves the security of important data.
Network Implementation cost
To set up a network requires investment in hardware and software.
Network Management And administration costs
Network managers and administrators are required to manage and administer large networks. Hiring these professionals increases the management and administration costs.
Threat From Viruses
The effect of viruses on a network is more as compared with stand-alone systems because viruses can easily spread one computer to another over networks.
Illegal Behaviour
The network brings certain problems like illegal or unauthorized material, software priva,cy, and illegal use of computer resources.
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In this post discusses the computer network, need, uses, advantages and disadvantages of computer network. I hope you have learned from reading this post. If you like this post then share it with your friends and you can comment on any of your doubts and I will replay then at the earliest.
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