Which two models are the models of DiffServ-Award traffic Engineering？（）

A . application layer B . session layer C . transport layer D . network layer E . datalink layer F . physical layer

A . application layer B . session layer C . transport layer D . network layer E . datalink layer F . physical layer

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 address B . 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 behavior 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

A . a drawback of implementing RSVP is the requirement to migrate to a supporting routing protocol B . RSVP uses DSCP to signal QoS requirements to routers  C . RSVP is a routing protocol D . RSVP is an IP protocol that uses IP protocol ID 46， and TCP/UDP ports 3455 E . RSVP specifically provides a level of service for rate-sensitive and delay-sensitive traffic F . the flow-based approach of RSVP is ideal for large， scalable implementations such as the public internet

A . At most one listener of each type can be registered with a component. B . Mouse motion listeners can be registered on a List instance. C . There exists a class named ContainerEvent in package java.awt.event. D . There exists a class named MouseMotionEvent in package java.awt.event. E . There exists a class named ActionAdapter in package java.awt.event.

A . FTP sessions supported B . drive size options C . RAID versions supported D . number of CIFS/NFS users supported E . number of drive bays per platform

A . Policy-based Model B . Class based Model C . Russian Doll Model D . Global Tunnel Model E . Maximum Allocation Model

A . service guarantee B . traffic that is divided into classes C . not scalable to large implementations D . QoS mechanisms that are used without prior signaling E . applications that signal their particular QoS and bandwidth requirement

A . link efficiency B . admission control C . classification and marking D . shaping and policing E . congestion avoidance using the RTP protocol F . resource reservation using the RSVP protocol

A . DiffServ requires RSVP to set up a path through the network to accommodate the requested QoS. B . Network traffic is identified by class， and the level of service is chosen for each class. C . The DiffServ model relies on a fairly simple mechanism to provide QoS over a wide range of equipment. D . RSVP enables the DiffServ model to provide end-to-end QoS. E . The DiffServ model is more scalable than the IntServ model. F . The flow-based approach of the DiffServ model is ideal for large scalable implementations such as the public Internet.

A .  The DiffServ model requires applications to signal the network with QoS requirements. B .  The DiffServ model can be used to deliver QoS based upon IP precedence， or source and destination addresses. C .  The DiffServ model requires RSVP. D .  The best effort model is suitable for applications such as file transfer and e-mail E .  The IntServ model requires applications to signal the network with QoS requirements. F .  The IntServ model attempts to deliver a level of service based on the QoS specified by each packet

A . ping B . Telnet C . FTP D . TCP E . IP

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.

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.

A .  link efficiency B .  admission control C .  classification and marking D .  shaping and policing E .  congestion avoidance using the RTP protocol F .  resource reservation using the RSVP protocol

A . ping B . Telnet C . FTP D . TCP E . IP

A . delay sensitive packets are given preferential treatment B . the default policy identifies a delay sensitive class and default class C . the default policy identifies a delay sensitive class， best effort class， and default class D . the model is highly scalable E . the model is still predominant on the internet F the model provides guaranteed service

A .  3 / 2 B .  3 < 2 C .  3 * 4 D .  3 << 2 E .  3 * 22 F .  3 <<<2

A.Performed B.Defined C.Quantitatively Managed D.Managed F.Repeated G.Both C and F