Which two statements about the diffserv model are true?()

A . a class can be inentified as a single application .multiple applications with similar service nees.or be based on the source or destination ip addresses. B . a drawback of the diffserv model is that it does not provide backward compatibility with devices that can only use the tos field. C . diffserv uses the diffserv field in the MAC header to mark frames into behavior aggregates(BAs) D . the diffserv field occupies the same eight bits of the mac header that were previously used for the tos field. E . the first six high-order bits of the diffserv field are used to identify the resource reservation protocol(RSVP) value . F . the primary goal of diffserv is scalabilty.

时间:2022-10-22 22:06:21 所属题库:CCNP(642-845)题库

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