思科认证考试
When implementing MPLS VPNs between CE and PE routers, which of these statements is correct? As a Network Engineer, it is necessary for you to know how to implement MPLS VPNs between Customer Edge and Provider Edge routers. Refer to the following descrip
题目
When implementing MPLS VPNs between CE and PE routers, which of these statements is correct? As a Network Engineer, it is necessary for you to know how to implement MPLS VPNs between Customer Edge and Provider Edge routers. Refer to the following descriptions, which one is making sense?（）
- A、If using OSPF or EIGRP as the PE-CE routing protocol, redistribution is not required, but any other protocol or static route will require redistribution
- B、If using IS-IS as the PE-CE routing protocol, no redistribution is required
- C、If using static routes between the CE and PE routers, no redistribution of other VPN routes is required
- D、If PE-CE protocol is not BGP, redistribution of other VPN routes from MP-BGP is required
相似问题和答案
第1题：
A. Layer 3 MPLS VPNs can forward only IP packets
B. Layer 2 MPLS VPNs can forward any network protocol
C. MPLS label paths are automatically formed based on Layer 2 frames
D. Layer 3 MPLS VPNs can forward any network protocol based on Layer 2 frames
E. In Layer 2 MPLS VPNS, the service provider controls the customer Layer 3 policies
第2题：
Which technology is an example of the need for a designer to clearly define features and designedperformance when designing advanced WAN services with a service provider？（）
- A、 FHRP to remote branches.
- B、 Layer 3 MPLS VPNs routing.
- C、 Control protocols （for example Spanning Tree Protocol） for a Layer 3 MPLS service.
- D、 Intrusion prevention， QoS， and stateful firewall support network wide.
正确答案:B
第3题：
A.P
B.CE
C.PE
D.SP
第4题：
AutoQoS takes the interface type and bandwidth into consideration when implementing what three QoS features？（）
- A、FECN
- B、LLQ
- C、WRED
- D、LFI
- E、CRTP
- F、CBWFQ
正确答案:B,D,E
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：
Why is it appropriate to use conditional label advertising when deploying MPLS? （）
- A、to make CEF tables smaller
- B、to enable label switching on the frame mode interface
- C、to restrict MPLS availability to predefined time periods
- D、to restrict label switching to a limited number of networks
- E、to restrict end users from seeing the routers in the MPLS network
正确答案:D
第7题：
What is a reason for implementing MPLS in a network？（）
- A、MPLS eliminates the need of an IGP in the core.
- B、MPLS reduces the required number of BGP-enabled devices in the core.
- C、Reduces routing table lookup since only the MPLS core routers perform routing table lookups.
- D、MPLS eliminates the need for fully meshed connections between BGP enabled devices.
正确答案:B
第8题：
A. to make CEF tables smaller
B. to enable label switching on the frame mode interface
C. to restrict MPLS availability to predefined time periods
D. to restrict label switching to a limited number of networks
E. to restrict end users from seeing the routers in the MPLS network
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：
Which three functions can CCC be used for？（）
- A、To interconnect VLANS
- B、To interconnect ATM VCs
- C、To interconnect MPLS LSPs
- D、To interconnect MPLS VPNs
正确答案:A,B,C