What is Computer Networks Mean, Criteria Of Computer Networks and Its advantages & Disadvantages
Computer Networks
Computer network consists of two or more computers that are connected together to share information and resources. The resources may include printer hard disk and programs etc. There are several computers are two computers in a network that may be connected together to share data in network. The communication media can be physical or wireless connection. There can be e local as well as global computer network in which different computers are devices can be connected to each other for sharing of resources.
Examples of computer networks
There are several examples of computer networks. Computers used in an office and different people in the office can access and information its means that resources are shared. In office for staff. User computers are connected to a network they can share their files and exchange emails. Internet is also an example of computer networks in which millions of computers are connected through phone line. People using this network can share information files and talk with one another.
Network criteria
1. Performance
2. Reliability
3. Security
First one can be measured in different ways such as transmission time and response time. Transmission time is the time device to another device whereas response time is the time between an inquiry and its response there are different factors that influence the performance of a network this factor includes user type of transmission medium and the hardware and software being used.
There are two measurement matrices to measure performance which are throughput and delay. Higher throughput and less delay means better performance whereas high delay and low throughput means low performance. Accuracy of data and delivery time it also includes the frequency of failure and the time taken to recover from the failure.It also includes the implementation of policies and procedures for data recovery if it is glass a damaged
There are several advantages and disadvantages of Computer Networks.
Advantages of computer networks
1. Information and resource sharing
2. Money saving
3. Easy communication
4. Easy sharing
5. Entertainment
6. Data security and Management
Disadvantages of Computer Networks
1. Setup cost of hardware and software
2. Management cost of hardware and software
3. undesirable sharing
4. communication hazards
5. data theft and security issues
What is Computer Networks Mean, Criteria Of Computer Networks and Its advantages & Disadvantages
Computer Networks
Computer network consists of two or more computers that are connected together to share information and resources. The resources may include printer hard disk and programs etc. There are several computers are two computers in a network that may be connected together to share data in network. The communication media can be physical or wireless connection. There can be e local as well as global computer network in which different computers are devices can be connected to each other for sharing of resources.
Examples of computer networks
There are several examples of computer networks. Computers used in an office and different people in the office can access and information its means that resources are shared. In office for staff. User computers are connected to a network they can share their files and exchange emails. Internet is also an example of computer networks in which millions of computers are connected through phone line. People using this network can share information files and talk with one another.
Network criteria
1. Performance
2. Reliability
3. Security
First one can be measured in different ways such as transmission time and response time. Transmission time is the time device to another device whereas response time is the time between an inquiry and its response there are different factors that influence the performance of a network this factor includes user type of transmission medium and the hardware and software being used.
There are two measurement matrices to measure performance which are throughput and delay. Higher throughput and less delay means better performance whereas high delay and low throughput means low performance. Accuracy of data and delivery time it also includes the frequency of failure and the time taken to recover from the failure.It also includes the implementation of policies and procedures for data recovery if it is glass a damaged
There are several advantages and disadvantages of Computer Networks.
Advantages of computer networks
1. Information and resource sharing
2. Money saving
3. Easy communication
4. Easy sharing
5. Entertainment
6. Data security and Management
Disadvantages of Computer Networks
1. Setup cost of hardware and software
2. Management cost of hardware and software
3. undesirable sharing
4. communication hazards
5. data theft and security issues
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