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The dots represent the nodes in the various topologies, and the lines represent the communication links. Network topologies include the following types:
Type “netstat -a” in the command prompt and press ‘Enter’, this lists all the ports being used.
A protocol is a set of rules or algorithms which define the way how two entities can communicate across the network and there exists a different protocol defined at each layer of the OSI model. A few such protocols are TCP, IP, UDP, ARP, DHCP, FTP, and so on.
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Service provider networks. These are network providers that lease network capacity and functionality to customers. Providers typically consist of telecommunication companies, data carriers, internet service providers and cable television providers.
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Computer networks are ideal for the quick exchange of information and the efficient use of resources.
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What is a network? In information technology, a network is defined as the connection of at least two computer systems, either by a cable or a wireless connection. The simplest network is a combination of two computers connected by a cable.
Resource sharing. Enterprises of all sizes can use a computer network to share resources and critical assets. Resources for sharing can include printers, files, scanners and photocopy machines.
Application layer. Security protocols, such as Transport Layer Security, operate at this layer and play an integral part in ensuring network security. This is the abstraction layer that communicates directly with applications and defines 男同网 how high-level apps should access the network to start a data transfer.
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Data security and management. In a computer network, data is centralized on shared servers. This helps network administrators to better manage and protect their company's critical data assets.