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To understand a network, you need to know the components of a network. When examining a network, you must first determine the size of the network.
You will then need to familiarize yourself with the basic connection components, such as the cables and communication programs used to create the network.
You must be able to distinguish between multiple network topologies and then determine which network technology is appropriate for each network design.
You must select specific network components that will enable future expansion of the network.
VLAN
VLANs are used to segment virtual networks, especially in the VoIP environment, but also elsewhere.
SAN (storage / system area network) for networking a room - typically a data center intranet: a network based on the same technology as the Internet, but accessible only to a closed user group (e.g. employees of a company, members of a university) Extranet: an intranet that allows access to selected external users (e.g. customers).
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