Share some CCIE 400-201 exam questions and answers below.
A security risk has been discovered on the Service Provider MPLS core network durina a network audit. Traceroute between the customer sites displays IP addresses of the Service Provider MPLS core. What should be done to hide the IP addresses of the Service Provider MPLS core from the customer traceroute utility?
A.Configure an access list to block traceroute traffic.
B.Apply the no mpls ip propagate-ttl forward command.
C.Enable MPLS LDP session protection.
D.Configure an LDP label allocation filter.
E.Apply the no mpls ip propagate-ttl local command.
Answer: B
An engineer wants to configure MPLS TE Fast Reroute with link protection on five routers. Which methodology can reduce configuration on the point of the local repair router and successfully complete the task?
A.Configure a backup tunnel on the PLR.
B.Enable the autotunnel backup feature.
C.Configure a backup tunnel on the tunnel headend router.
D.Enable the autotunnel primary feature.
Answer: B
Which are the two advantages if an ISP chooses a platform that runs Cisco IOS-XR Software instead of Cisco IOS Software? (Choose two.)
A.Cisco IOS XR Software functions as a message-passing operating system.
B.The system's scheduler is priority-based.
C.The context switching is based on Cisco Express Forwarding.
D.VoIP traffic is hardware-processed for real-time response.
E.Communication between client and server is realized by a dedicated mechanism.
Answer: AB
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