The diffserv approach to providing QoS in networks employs a small, well-defined set of building blocks from which you can build a variety of( ). Its aim is to define the differentiated services (DS) byte, the Type of Service (ToS) byte from the Internet Protocol Version 4 ( )and the Traffic Class byte from IP Version 6, and mark the standardized DS byte of the packet such that it receives a particular forwarding treatment, or per-hop behavior (PHB), at each network node. The diffserv architecture provides a( )within which service providers can offer customers a range of network services, each differentiated based on performance. A customer can choose the ( )level needed on a packet-by-packet basis by simply marking the packet&39;s Differentiated Services Code Point (DSCP) field to a specific value.This ( ) specifies the PHB given to the packet within the service provider network.
A.servicesB.UsersC.networksD.structuresA.messageB.PacketC.headerD.packageA.informationB.StructureC.meansD.frameworkA.performanceB.SecureC.privacyD.dataA. packetB.valueC.serviceD.paragraph
第1题:
A.DiffServ
B.IntServ
C.DiffServ和IntServ并重
D.IntServ为主,同时也使用DiffServ
第2题:
第3题:
Which three statements are true about the application of QoS models? ()
第4题:
QoS中通常有以下哪些服务模型()。
第5题:
中国电信在部署MPLSVPN,采用的QOS业务模型为()。
第6题:
What are two characteristics of the DiffServ model?()
第7题:
Which three practices are important to the implementation of a DiffServ QoS architecture?()
第8题:
Which three statements are true about the appliance of QoS models?()
第9题:
城域骨干网以基于DiffServ为主的QoS技术提供突发拥塞时的QoS保证。
第10题:
best-effort delivery
ingress committed rate (ICR)
shaping and policing
egress committed rate (ECR)
Integrated Services (IntServ)
differentiated services (DiffServ)
第11题:
The DiffServ model requires applications to signal the network with QoS requirements.
The DiffServ model can be used to deliver QoS based upon IP precedence, or source and destination addresses.
The DiffServ model requires RSVP.
The best effort model is suitable for applications such as file transfer and e-mail
The IntServ model requires applications to signal the network with QoS requirements.
The IntServ model attempts to deliver a level of service based on the QoS specified by each packet
第12题:
Because services are allocated throughout the network before the transmission of data begins, traffic classes can be guaranteed QoS services.
Traffic classes are marked with Layer 2 markings to allow for more granularity in identifying traffic classes.
Traffic classes are marked with Layer 3 markings to allow them to traverse different network types without loss of QoS information.
Traffic classes allow networks to provide proper QoS treatment of packets without applications having to request services.
Based upon the network capabilities, QoS markings are placed on packets as needed throughout the network to allow for proper QoS treatment of packets.
QoS markings are placed on packets as close to the network edge as possible to allow distribution and core devices to determine QoS actions as quickly as possible.
第13题:
A.错误
B.正确
第14题:
第15题:
Which QoS model manages the QoS requirements for the network on a per-hop behavior (PHB) basis?()
第16题:
Diffserv主要采用RSVP协议实现端到端的QoS
第17题:
QoS的服务模型包括哪几种?()
第18题:
以下哪些不属于QoS中的服务模型()
第19题:
Which two statements about the DiffServ QoS model are true?()
第20题:
Cisco Series routers is suitable for small businesses and for connectinq small offices to enterprise networks.()
第21题:
对
错
第22题:
DiffServ requires RSVP to set up a path through the network to accommodate the requested QoS.
Network traffic is identified by class, and the level of service is chosen for each class.
The DiffServ model relies on a fairly simple mechanism to provide QoS over a wide range of equipment.
RSVP enables the DiffServ model to provide end-to-end QoS.
The DiffServ model is more scalable than the IntServ model.
The flow-based approach of the DiffServ model is ideal for large scalable implementations such as the public Internet.
第23题:
the DiffServ model requires applications to signal the network with QoS requirements
the DiffServ model can be used to deliver QoS based upon IP precedence, or source and destination addresses
the DiffServ model requires RSVP
the best effort model is suitable for applications such as file transfer and e-mail
the IntServ model requires applications to signal the network with QoS requirements
the IntServ model model attempts to deliver a level of service based on the QoS specified by each packet