CMS专题
单选题What IOS commands display MPLS label mapping on an LSR？（）A Show mpls forwading-tableB Show mpls ldp bindingsC Show mpls ldp neighbor detailD Show mpls ldp parametersE Show mpls ldp discovery
题目
Show mpls forwading-table
Show mpls ldp bindings
Show mpls ldp neighbor detail
Show mpls ldp parameters
Show mpls ldp discovery
相似问题和答案
第1题：
There is MPLS VPN traffic traversing through a TE intermediate router. What is the MPLS packet labelstack sequence （from outer to inner） for the VPN traffic on this router？（）
- A、TE label， IGP label， VPN label
- B、IGP label， TE label， VPN label
- C、TE label， VPN label， IGP label
- D、VPN label， IGP label， TE label
- E、IGP label， VPN label， TE label
正确答案:A
第2题：
What are the four fields in an MPLS label？（）
- A、version
- B、experimental
- C、label
- D、protocol
- E、TTL
- F、bottom-of-stack indicato
正确答案:B,C,E,F
第3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4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5题：
As a network administrator, you are required to deploy MPLS technology. During the deployment, it is recommended to apply conditional label advertising. What is most probably the reason for that?（）
- A、to enable label switching on the frame mode interface
- B、to restrict MPLS availability to predefined time periods
- C、to restrict end users from seeing the routers in the MPLS network
- D、to restrict label switching to a limited number of networks
正确答案:D
第6题：
在VRP5中，以下哪些命令用于查看运行LDP协议的接口（）。
- A、display mpls ldp
- B、display mpls lsp
- C、display mpls interface
- D、display mpls ldp interface
正确答案:D
第7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8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9题：
Using more than one label on a single packet is required in what context？（）
- A、MPLS TE
- B、MPLS VPN
- C、When CEF switching and Label switching is done
- D、In all the above circumstances
正确答案:B
第10题：
What is the Cisco IOS command to turn on explicit null forwarding by LDP？（）
- A、ldp explicit-null
- B、mpls forwarding explicit-null
- C、mpls ldp advertise-labels explicit null
- D、mpls ldp explicit-null
正确答案:D