简述Diffserv服务模型。
简述Diffserv服务模型。
相关考题:
●下列对集成服务( IntServ)模型和区分服务(DiffServ)模型描述正确的是(24) 。(24)A.IP的Qos技术主要是集成服务模型和区分服务模型B.集成服务模型和区分服务模型无法进行结合C.集成服务扩展性好,可以应用在不同规模的网络中;区分服务扩展性差,不能应用在大型网络中D.集成服务模型可以针对单个业务(比如一路电话)进行Qos保证;区分服务模型不针对单个业务,而是针对一类业务进行Qos保证
关于DiffServ模型体系结构,正确的有() A.DS区域的服务提供策略由PHB决定B.不同DS区域可有不同的PHB以实现不同的服务提供策略C.所有DS区域的PHB必须相同,以保证服务提供策略连续D.在网络边缘进行业务分类和流量调整
以下关于DiffServ的说法,不正确的是( )。A.DiffServ最主要的优势是弱化了对信令的依赖B.DiffServ提供全网端到端的QoS保证C.DiffServ将QoS的一致性范围缩小到每个区域之中,从而降低了这种模型实现的复杂性。D.DiffServ无需像IntServ在每个路由器上为每个业务流保留"软状态",避免了大量的资源预留信息的传递,具有更好的可扩展性
Which two statements about the DiffServ model are true?()A、a class can be identified as a single application, multiple applications with similar service needs,or be based on the source or destination IP addressB、a drawback of the DiffServ field in the MAC header to mark frames into behavior aggregates (BAs)C、DiffServ uses the DiffServ field in the MAC header to mark frames into behaviorD、the DiffServ field occupies the same eight bits of the MAC header that were previously used for the ToS fieldE、the first six high-order bits of the DiffServ field are used to identify the Resource Reservation Protocol (RSVP) valueF、the primary goal of DiffServ is scalability
QoS中通常有以下哪些服务模型()。A、Best EffortB、FIFO(First Input First Output)C、DiffServ(Differentiated Service)D、IntServ(Integrated Service)
以下哪些不属于QoS中的服务模型()A、Best EffortB、FIFO(First Input First Output)C、DiffServ(Differentiated ServicE)D、IntServ(Integrated ServicE)
Which two statements about the DiffServ model are true? ()A、 A class can be identified as a single application, multiple applications with similar service needs, 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 scalability.
关于DiffServ模型体系结构,正确的有()A、DS区域的服务提供策略由PHB决定B、不同DS区域可有不同的PHB以实现不同的服务提供策略C、所有DS区域的PHB必须相同,以保证服务提供策略连续D、在网络边缘进行业务分类和流量调整
单选题中国电信在部署MPLSVPN,采用的QOS业务模型为()。ADiffServBIntServCDiffServ和IntServ并重DIntServ为主,同时也使用DiffServ