Questão 1872169

• Banca: CESPE / CEBRASPE
• Órgão: Telebras
• Ano: 2015
• Provas: CESPE - 2015 - Telebras - Engenheiro - Engenharia de Redes
• Disciplina: Redes de Computadores
• Assuntos: Equipamentos de Redes; Roteadores

Julgue o item que se segue, relativo a roteadores e switches.

Quando mais de um roteador multicast está conectado a uma rede, eles compartilham as listas de groupid.

• C. Certo
• E. Errado

Gabarito: C

Comentários

• groupid está relacionado ao protocolo IGMP (Internet Group Management Protocol).

   

  https://users.cs.jmu.edu/aboutams/Web/Networking/Spring03/Lectures/Lecture%2010-%20IGMP.pdf

  Routers maintain one list of groupids per interface. If new (i.e. to the router) groupid, send MR out of all interfaces, except the one from which the new interest came from.

   

  https://books.google.com.br/books?id=bwUNZvJbEeQC&pg=PA632&lpg=PA632&dq=%22group+address%22+%22groupid%22

  Group address. The value of this field is 0 for a general query message. The value defines the groupid (multicast address of the group) in the special query, the membership report, and the leave report messages.

• oh Informática sem fim