19-09-2017, 09:48 AM
A computer network or data network is a digital telecommunications network that allows nodes to share resources. In computer networks, the network computing devices exchange data between each other via a data link. The connections between the nodes are established using cable or wireless media.
Network devices that originate, route, and terminate data are referred to as network nodes. Nodes can include hosts such as personal computers, telephones, servers, as well as network hardware. It can be said that two devices are connected in a network when one device is capable of exchanging information with the other device, whether or not they have a direct connection to each other. In most cases, application-specific communications protocols overlap (that is, be transported as payload) over other, more general communications protocols. This formidable collection of information technology requires specialized network management to keep everything running reliably.
Computer networks support a large number of applications and services such as access to the World Wide Web, digital video, digital audio, application and storage server sharing, printers and fax machines, and use of instant messaging and mail applications electronic. much others. Computer networks differ in the transmission medium used to carry their signals, communications protocols to organize network traffic, network size, topology and organizational intent. The best-known computer network is the Internet.
Computer networks can be considered as a branch of electrical engineering, electronic engineering, telecommunications, computer science, computer science or computer engineering, as it is based on the theoretical and practical application of related disciplines.
A computer network facilitates interpersonal communications, allowing users to communicate efficiently and easily through various means: e-mail, instant messaging, online chat, telephone, video calls and video conferencing. A network allows sharing of network and computing resources. Users can access and use the resources provided by devices on the network, such as printing a document to a shared network printer or using a shared storage device. A network allows you to share files, data and other types of information that allow authorized users to access information stored on other computers on the network. Distributed computing uses computing resources in a network to perform tasks.
Security hackers can use a computer network to deploy computer viruses or computer worms to devices connected to the network or to prevent these devices from accessing the network through a denial of service attack.
Network devices that originate, route, and terminate data are referred to as network nodes. Nodes can include hosts such as personal computers, telephones, servers, as well as network hardware. It can be said that two devices are connected in a network when one device is capable of exchanging information with the other device, whether or not they have a direct connection to each other. In most cases, application-specific communications protocols overlap (that is, be transported as payload) over other, more general communications protocols. This formidable collection of information technology requires specialized network management to keep everything running reliably.
Computer networks support a large number of applications and services such as access to the World Wide Web, digital video, digital audio, application and storage server sharing, printers and fax machines, and use of instant messaging and mail applications electronic. much others. Computer networks differ in the transmission medium used to carry their signals, communications protocols to organize network traffic, network size, topology and organizational intent. The best-known computer network is the Internet.
Computer networks can be considered as a branch of electrical engineering, electronic engineering, telecommunications, computer science, computer science or computer engineering, as it is based on the theoretical and practical application of related disciplines.
A computer network facilitates interpersonal communications, allowing users to communicate efficiently and easily through various means: e-mail, instant messaging, online chat, telephone, video calls and video conferencing. A network allows sharing of network and computing resources. Users can access and use the resources provided by devices on the network, such as printing a document to a shared network printer or using a shared storage device. A network allows you to share files, data and other types of information that allow authorized users to access information stored on other computers on the network. Distributed computing uses computing resources in a network to perform tasks.
Security hackers can use a computer network to deploy computer viruses or computer worms to devices connected to the network or to prevent these devices from accessing the network through a denial of service attack.