思科认证考试
Which QoS preclassification option will require the use of the qos pre-classify command for the VPN traffic？ （）A、VPN traffic needs to be classified based on the Layer2 header informationB、VPN traffic needs to be classified based on the IP precedence or DS
题目
Which QoS preclassification option will require the use of the qos pre-classify command for the VPN traffic？ （）
- A、VPN traffic needs to be classified based on the Layer2 header information
- B、VPN traffic needs to be classified based on the IP precedence or DSCP
- C、VPN traffic needs to be classified based on IP flow or Layer 3 information， such as source and destination IP address
- D、VPN traffic with Authentication Header （AH） needs to preserve the ToS byte
参考答案和解析
相似问题和答案
第1题：
Which IOS QoS enhancement was created to address scalability and bandwidth guaranteeissues？（）
- A、 DiffServ
- B、 IntServ
- C、 RSVP
- D、 WFQ
正确答案:C
第2题：
Which QoS mechanism can help classify different kinds of Citrix traffic （print job versus real-time terminal control）？（）
- A、qos-group
- B、DSCP
- C、LFI
- D、NBAR
正确答案:D
第3题：
A.DiffServ
B.IntServ
C.RSVP
D.WFQ
第4题：
Which parameter， when enabled on a standalone access point， gives the highest priority to a voice packet even when qos is not enabled？（）
- A、igmp snooping
- B、wmm
- C、qos element for wireless phones
- D、avvid priority mapping
正确答案:C
第5题：
Which QoS model manages the QoS requirements for the network on a per-hop behavior （PHB） basis？（）
- A、best-effort delivery
- B、ingress committed rate （ICR）
- C、shaping and policing
- D、egress committed rate （ECR）
- E、Integrated Services （IntServ）
- F、differentiated services （DiffServ）
正确答案:F
第6题：
When you design QoS on CE for an MPLS Layer 2 VPN， which three things should be considered？（）
- A、Layer 2 access link QoS design
- B、enterprise-to-service-provider mapping models
- C、Layer 3 link access QoS design
- D、service provider service level agreements
- E、Layer 2 link access load balancing
正确答案:A,B,D
第7题：
Which three statements are true about the application of QoS models？ （）
- 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
正确答案:B,D,E
第8题：
Which two Cisco AutoQoS configuration statements are true？ （）
- A、the auto discovery qos command is supported on serial interfaces， subinterfaces， and virtual interfaces
- B、CEF must be enabled before configuring the auto discovery qos command
- C、the auto discovery qos privilege EXEC command must be configured on a router for several days to collect a sampling of data traffic
- D、the auto qos trust command relies on NBAR to provide VoIP classification
- E、the auto qos voip command configures the voip classification on routers and switches
正确答案:B,E
第9题：
Which of the characteristics below is associated with the （QoS） Integrated Services Model？（）
- A、QoS classified at layer 3 using IP precedence or DSCP
- B、Guaranteed rate service
- C、Implemented using FIFO queues
- D、All traffic has an equal chance of being dropped
正确答案:B
第10题：
Which statement is correct about the Cisco QoS SDM wizard？（）
- A、the best-effort class will need to have its percentage entered in the QoS Policy Generation screen
- B、SDM QoS wizard provides real-time validation of application usage of WAN bandwidth
- C、the SDM wizard is not able to monitor QoS policing traffic
- D、the SDM QoS wizard is pre-installed on enterprise routers
正确答案:B