CCIE系列认证
单选题MPLS label mapping on an LSR is displayed by which IOS command？（）A Show mpls Idp neighbor detailB Show mpls Idp bindingsC Show mpls Idp parametersD Show mpls Idp discovery
题目
Show mpls Idp neighbor detail
Show mpls Idp bindings
Show mpls Idp parameters
Show mpls Idp discovery
参考答案和解析
相似问题和答案
第1题：
A. start LDP
B. enable CEF switching
C. configure the MPLS ID
D. disable IP TTL propagation
E. configure conditional label advertising
F. enable label switching on frame mode interfaces
第2题：
Which of the following processes in IOS XR run exclusively on the Route Processor？（）
- A、bgp
- B、mpls_idp
- C、sysmgr
- D、wdsysmon
- E、gsp
正确答案:A,B
第3题：
A. upstream node
B. originating node
C. destination node
D. downstream node
第4题：
下列关于MPLS lsr-id描述正确的是（）。
- A、lsr-id用来在MPLS网络中标识一台LSR设备
- B、lsr-id的格式与IP地址相同
- C、lsr-id在MPLS网络中唯一
- D、lsr-id必须配置成与该LSR的Router ID相同
正确答案:A,B,C
第5题：
In the context of MPLS，what is the correct action to be performed when an aggregate label is received ？（）
- A、It adds the VPN label into the top label in the MPLS label stack
- B、It replaces the top label in the MPLS label stack with a VPN label and propagates
- C、It replaces the bottom label in the MPLS label stack with a VPN label and propagates
- D、It removes the top label in the MPLS label stack and does a Layer 3 lookup on underlying IP packets
- E、None of above
正确答案:D
第6题：
Which four of these are MPLS label header fields？ （）
- A、Label
- B、VPI VCI
- C、EXP
- D、TTL
- E、FCS
- F、S flag
正确答案:A,C,D,F
第7题：
Which option describes the incorrect usage of the Label Distribution method？（）
- A、LDP is primarily used in internal networks of MPLS-VPN providers.
- B、MP-BGP is used for label distribution for VPN customer routes.
- C、Directed LDP is used for label distribution in L2-VPN Attachement Circuits.
- D、MP-BGP is used for label distribution in MPLS Traffic Engineered networks.
正确答案:D
第8题：
The router SIS-R has been configured in a CIS network. As a network administrator, you were required to enable MPLS on that router.Which of the following description is making sense on the basis of the output information?（）
A. CEF switching is only needed to forward labeled packets.
B. CEF switching is needed on both ingress and egress interfaces on which MPLS is enabled.
C. Interface-level CEF switching is needed only on egress interfaces that are sending IP packets on which the egress LSR performs the label imposition process.
D. Interface-level CEF switching is needed only on ingress interfaces that are receiving IP packets on which the ingress LSR performs the label imposition process.
第9题：
What is the action of "pop" in the context of MPLS switching？（）
- A、It removes the top label in the MPLS label stack.
- B、It adds a top label in MPLS label stack.
- C、It replaces the top label in the MPLS label stack with another value.
- D、It replaces the top label in the MPLS label stack with a set of labels.
- E、None of above.
正确答案:A
第10题：
Cisco IOS is the software used on the vast majority of Cisco Systems routers and current Cisco network switches. As a network administrator, you are required to configure MPLS on Cisco IOS. In such a situation, which three of the following steps are necessary to take?（）
- A、Start LDP.
- B、Enable CEF switching.
- C、Configure conditional label advertising.
- D、Enable label switching on frame mode interfaces.
- E、disable IP TTL propagation
- F、configure conditional label advertising
正确答案:A,B,D