简述PHB（Per-Hop Behaviors）的定义。
简述PHB（Per-Hop Behaviors）的定义。
相关考题：
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 packets 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
Judging from her speeches and behaviors, Marry has a strict_______A．growthB．upbringingC．developmentD．cultivation
Which QoS model manages the QoS requirements for the network on a per-hop behavior （PHB） basis？（）A、best-effort deliveryB、ingress committed rate （ICR）C、shaping and policingD、egress committed rate （ECR）E、Integrated Services （IntServ）F、differentiated services （DiffServ）
Which of these is a valid differentiated services PHB？ （）A、Guaranteed PHBB、Class-Selector PHBC、Reserved Forwarding PHBD、Discard Eligible PHBE、Priority PHB
With the DSCP value fo "101110"， what does the "11" in bits 1 and 2 indicate ？（）A、AF ClassB、Drop ProbabilityC、CS（Class Selector Value ）D、PHB （Per-Hop Behavior ）E、IP PrecedenceF、Queue Depth
On the basis of the definitions of different services in various RFCs， traffic with Expedited Forwarding per-hop behavior should be marked as which of these？（）A、IP ToS of 0xEFB、IP experimental ECNC、DSCP decimal 5D、Binary value of 101110
You are creating a Windows Communication Foundation (WCF) service. The service endpoints change frequently. On the service, you add a new ServiceDiscoveryBehavior to the Behaviors collection of the ServiceHost Description property. You need to ensure that client applications can communicate with the service and discover changes to the service endpoints. What should you do?（）A、Add a new ServiceDiscoveryBehavior to the Behaviors collection in the client application.B、Add a new AnnouncementClient to the Behaviors collection in the client application.C、Use the FindCriteria class and the UdpDiscoveryEndpoint class to set up the binding in the client application.D、Use the DiscoveryProxy class and the EndpointDiscoveryMetadata class to set up the binding in the client application.
You are developing a Windows Communication Foundation (WCF) client application. The client application contains the following code. [ServiceContract] public interface ISocialStatus { [OperationContract] [WebInvoke(UriTemplate = "/statuses/update.xml?status-{text}")] void UpdateStatus(string text); } public class SocialClient : ClientBase, ISocialStatus { ... } The configuration file contains the following lines. binding="webHttpBinding" contract="SocialApp.ISocialStatus" bindingConfiguration="BindingConfig" / You need to ensure that the service is consumed. Which code segment should you use?（）A、var client = new SocialClient("SocialClient"); client.Endpoint.Behaviors.Add(new WebHttpBehavior());B、var client = new SocialClient("SocialClient"); client.Endpoint.Behaviors.Add(new WebScriptEnablingBehovior());C、var client = new SocialClient("POST"); client.Endpoint.Behaviors.Add(new WebHttpBehovior());D、var client = new SocialClient("POST"); client.Endpoint.Behaviors.Add(new WebScriptEnablingBehavior());
单选题Which QoS model manages the QoS requirements for the network on a per-hop behavior （PHB） basis？（）Abest-effort deliveryBingress committed rate （ICR）Cshaping and policingDegress committed rate （ECR）EIntegrated Services （IntServ）Fdifferentiated services （DiffServ）
单选题Which of these is a valid differentiated services PHB？ （）AGuaranteed PHBBClass-Selector PHBCReserved Forwarding PHBDDiscard Eligible PHBEPriority PHB
单选题With the DSCP value fo "101110"， what does the "11" in bits 1 and 2 indicate ？（）AAF ClassBDrop ProbabilityCCS（Class Selector Value ）DPHB （Per-Hop Behavior ）EIP PrecedenceFQueue Depth
单选题His behaviors at the party was so bad that they were completely _____AcomprehensiveBintolerableCspontaneousDterrible
单选题According to the author, to be an anthropologist means we should _____.Atake interest in what we are doingBnot take interest in what other people are doingCjudge other people’s behaviors with accepted standardsDnot judge other people’s behaviors with our own standards