SóProvas


ID
1076368
Banca
FADESP
Órgão
MPE-PA
Ano
2012
Provas
Disciplina
Redes de Computadores
Assuntos

A arquitetura de rede (padrão IEEE 802.6) multiponto utilizada para conexões por banda larga, em que cada estação conecta a dois barramentos unidirecionais, é conhecida como:

Alternativas
Comentários
  • IEEE 802.6 is a standard governed by the ANSI for Metropolitan Area Networks (MAN). It is an improvement of an older standard (also created by ANSI) which used the Fiber distributed data interface (FDDI) network structure. The FDDI-based standard failed due to its expensive implementation and lack of compatibility with current LAN standards. The IEEE 802.6 standard uses the Distributed Queue Dual Bus (DQDB) network form. This form supports 150 Mbit/s transfer rates. It consists of two unconnected unidirectional buses. DQDB is rated for a maximum of 160 km before significant signal degradation over fiberoptic cable with an optical wavelength of 1310 nm.


    Fonte:https://en.wikipedia.org/wiki/IEEE_802.6