Discuss available WAN technologies. If you need to choose, which one is your favorite (with reasons).
ANSWER:
A WAN is a data communications network that operates beyond the graphical scope of LAN
In order to design a WAN it's mandate to know what data traffic it has to carry, it's source and it's destination
WANs Operate at the Lower Three Levels of the OSI Model.
WAN technologies and standards include......
ATM
Asynchronous Transfer Mode (ATM) is a technology capable of transferring voice, video, and data through private and public networks. • It is built on a cell based architecture rather than on a frame-based architecture.
DSL
DSL uses existing twisted-pair telephone lines to transport high-bandwidth data.
DSL service is considered broadband, as it uses multiple frequencies within the same physical medium to transmit data.
Cable Modem
Enhanced Cable Modems enable twoway high speed data transmissions using the same coaxial lines that transmit cable television.
Dial Up
It is a form of internet access that uses the public telephone network to connect with ISP.
Frame Relay
It is a standardized wide area network technology that specifies the physical and data link layers of digital telecommunications channels using a packet switching methodology.
SD-WAN
An SD-WAN is a Wide Area Network (WAN) managed using the principles of software-defined networking.[42] The main driver of SD-WAN is to lower WAN costs using more affordable and commercially available leased lines, as an alternative or partial replacement of more expensive MPLS lines.
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Discuss available WAN technologies. If you need to choose, which one is your favorite (with reasons).
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