What are "remote access", "routers", "switches", "web conferences" that you can't hear anymore?: Home network for beginners 15 Great Basic terms [3rd]

As a measure to prevent the expansion of new colon virus infections (COVID-19), teleworks such as working from home are spreading.This series introduces 15 basic terms about home networks (home networks), which are important for employees practicing telework.Following the 1st "What are" bandwidth "," AP "and" Ethernet "? The required terms of home working networks" and the 2nd "I can't hear" Retensus "," LAN "," Modem ", and" Networking "?This paper describes four basic terms.

Teleworkers, which practice teleworking from home, need to connect to internal networks, such as "LAN" and "WAN", to use commercial applications and data.These "remote access" is indispensable as a basic element of home network.Employees can connect to internal networks from places other than the company, using remote access technology such as VPN (virtual private network).With remote access, home networks can play a role close to internal networks.

"Router" plays the role of a gateway for client devices to connect to the Internet and other networks.When the data passes through the router and moves between one or multiple networks, the router instructs the destination of the data.While the "modem" enables connection to the Internet, the router connects to the modem so that multiple client devices can use the Internet at the same time.The router is the basis of both home and internal networks.

"Switch" plays the same role as a router in terms of data transmission.However, only data transmission in a single network will be possible, and data transmission between different networks is not eligible.The switch operates in the layer 2 of the "OSI reference model", which classes the elements of the network by hierarchy.Layer 2 controls the data in and out of the network.

The "Web Conference" connects two or more people in different places so that you can communicate through cameras, microphones, displays and speakers.The WEB conference tool not only helps a geographically separated family and friends, but also indispensable as a means for teleworkers to connect with colleagues, bosses, customers, etc. who need to contact at work.do not have.

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