Up to date 400-201: Exambible real study guides from 61 to 70

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Q61. Refer to the exhibit. What is the correct action to fix the L2TPv3 configuration? 

A. At Router-A, correct the local interface in the pseudowire configuration. 

B. At Router-B, correct the encapsulation in the pseudowire configuration. 

C. At Router-A, correct the encapsulation in the pseudowire configuration. 

D. At Router-B, correct the local interface in the pseudowire configuration. 




Q62. Refer to the exhibit: 

A regional operations center recently set up a MPLS Inter-AS Option B solution for two service providers There is no intercommunication between CE1 and CE2 sites yet While troubleshooting this issue on the ASBR1 router, the operations engineer sees the following log: 

BGP(4): rcvd 100:101:, label 136 — DENIED due to: extended community not supported; What does this log mean? 

A. The route-target value does not match the one in the local VRF 

B. The community that was applied on ASBR does not match the local policies 

C. The bgp default route-target filter command is missing on both inter-AS ASBRs 

D. The BGP command retain route-target all is missing 


Q63. In a virtualization concept, which is one of the characteristic of the HVR solution? A. introduces significant contention of resources 

B. implements shared control plane resources 

C. implements dedicated chassis resources 

D. implements dedicated data plane resources 


Q64. Which are two major changes SyncE offers over traditional Ethernet to make it suitable for clock distribution? (Choose two.) 

A. SyncE introduces the concept of “Boundary Clocks” and “Transparent Clocks” improving network scalability and accuracy of clock synchronization. 

B. Industry standard that guarantee interoperability, since granular details, such as specific field values are specified. 

C. A mandated clock accuracy of 4.6ppm. 

D. The ESMC protocol for clock selection, distribution, management, traceability, and failover. 

E. High-priority synchronization packets so it can continually adjust its own oscillator. 

Answer: C,D 

Explanation: http://www.cisco.com/c/en/us/support/docs/optical/synchronous-optical-network-sonet/23718-timefaq-23718.html 


Q65. An engineer needs to implement changes to Router_A during a maintenance window. The engineer first saves the running-configuration of all routers to the local disk0, then applies the required configuration changes. However, during post checks, the engineer realizes the implementation was deployed on Router_B instead. 

Which command should the engineer apply to reverse the changes made during the maintenance window? 

A. configure revert disk0:myconfig-1 

B. configure reload ditk0:myconfig-1 

C. configure copy disk0:myconfig-1 

D. configure replace disk0:myconfig-1 


Explanation: http://www.cisco.com/c/en/us/td/docs/ios-xml/ios/config-mgmt/configuration/15-sy/config-mgmt-15-sy-book/cm-config-rollback-confirmed-change.html 

Q66. Two Tier 2 Service Providers are using a Tier 1 Service Provider for transport. MPLS is required between the Tier 2 Service Providers for label switching. In this CSC solution, which label stack is correct? 

A. original IP packet, MPLS CSC transport label, MPLS VPN label, and MPLS Tier 2 transport label 

B. original IP packet, MPLS Tier 2 transport label, MPLS VPN label, and MPLS CSC transport label 

C. original IP packet, MPLS VPN label, MPLS Tier 2 transport label, and MPLS CSC transport label 

D. original IP packet, MPLS Tier 2 transport label, MPLS CSC transport label, and MPLS VPN label 


Q67. In a routing virtualization concept, which are the two main techniques for creating vitalized router entities as defined by their physical and operational characteristics? (Choose two.) 






Answer: A,B 

Q68. Refer to the exhibit. 

A network engineer is troubleshooting PTP on Cisco ASR 9000 router. What can be concluded about the interface based on output provided? 

A. The interface receives timestamps from a master clock, but the router's clock is not yet synchronized to the master. 

B. The interface is aware of a better clock than the one it would advertise if it was in Master state. 

C. The interface is not yet ready to participate on PTP. 

D. The interface is about to go into Master state. 


Q69. Refer to the exhibit. Router RT1 has three equal-cost paths back to the source. Which configuration should be applied in order to load-balance the multicast traffic across all three links. 

A. Create three static multicast routes where each pointing out to one or three interfaces. 

B. Enable PIM multipath. 

C. Create a tunnel interface between RT1 and RT2. Enable PIM on the interface tunnel and disable PIM on the three interfaces part of equal-cost path between RT1 and RT2. 

D. PIM load balance is not possible. PIM only chooses one interface for RFC check and prunes the other interfaces. 



Reference: http://www.cisco.com/c/en/us/support/docs/ip/ip-multicast/16450-mcastguide0.html 

Q70. An engineer is troubleshooting Precision Time Protocol on Cisco ASR 9000 router and noticed the protocol is running in a Multicast mode. Which two results regarding the messages can the engineer expect? (Choose two) 

A. IPTP messages that use unicast messages and those that use multicast messages must be specified. 

B. Announce and Sync messages are sent as multicast messages. 

C. Signaling. Delay-Request and Delay-Response messages are sent as multicast messages 

D. All messages for PTP will be sent as multicast messages 

E. Announce and Sync messages are sent as unicast messages 

F. Signaling, Delay-Request, and Delay-Response messages are sent as unicast messages 

Answer: B,F