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WAN Technologies - POINT–TO-POINT
WAN technologies are based on serial transmission at the physical layer. This means that the bits of a frame are transmitted one at a time over the physical medium. The bits that make up the Layer 2 frame are signaled one at a time by physical layer processes onto the physical medium. The signaling methods include Nonreturn to Zero Level (NRZ-L), High Density Binary 3, (HDB3), and Alternative Mark Inversion (AMI). These are examples of...
36 p dtu 18/12/2012 211 2
Từ khóa: WAN Technologies, Networking basics, mạng cơ bản, kỹ thuật mạng, công nghệ mạng, Cisco Networking
WAN Technologies - WAN Technologies
A WAN is a data communications network that operates beyond the geographic scope of a LAN. A company or organization must subscribe to an outside WAN service provider in order to use WAN carrier network services. Devices on the subscriber premises are called customer premises equipment (CPE). A copper or fiber cable connects the CPE to the service provider’s nearest exchange or central office (CO). This cabling is often called the local...
33 p dtu 18/12/2012 212 1
Từ khóa: WAN Technologies, Networking basics, mạng cơ bản, kỹ thuật mạng, công nghệ mạng, Cisco Networking