Distributed Queue Dual Bus is a standard for

A MAN
B LAN & MAN
C Wireless lAN
D WAN

Correct Answer: LAN & MAN

Distributed - Queue Dual - Bus (DQDB) is a distributed multi - access network. provides access to Local Area Networks or Metropolitan Area Networks. supports connectionless data transfer, connection - oriented data transfer, and isochronous communications, such as voice communications.
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