10 Tips For Most recent 400-201 examcollection

Q1. A Service Provider is offering VoIP services and a service level agreement to customers. Which configuration provides validation to customers that the service level agreement has been honored? 

A. ip sla 999 udp-jitter 209.165.200.225 1000 codec g729a tos 160 ip sla schedule 999 life forever start-time now 

B. ip sla 999 icmp-jitter 209.165.200.225 tos 160 ip sla schedule 999 life forever start-time now 

C. ip sla 999 icmp-jitter 209.165.200.225 tag VoIP-SLA ip sla schedule 999 life forever start-time now 

D. ip sla 999 udp-jitter 209.165.200.225 1000 codec g729a tag VoIP-SLA 

ip sla schedule 999 life forever start-time now 

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Q2. An engineer is deploying RTBH. What is necessary routing constraint required for successful implementation? 

A. The trigger device must have an iBGP session with all the clusters/route reflectors in the autonomous system. 

B. The trigger device must redistribute the static route pointing to a null interface into the IGP process. 

C. The no ip reachables command must be issued on the PE router interface under attack. 

D. The attacker’s destination IP address must be routed to a null interface. 

E. The eBGP sessions need to set the next-hop attribute value to the trigger device loopback interface. 

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Q3. 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. 

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Q4. Refer to the exhibit. 

In the topology, networks in VRF A use the service provider network for transport. PE1 and PE2 run MP-BGP VPNv4 peering. Links between PE and P routers have MPLS enabled. Links between R1 and P routers do not support MPLS. 

Which technology can be implemented to build MPLS services between P1 and P2? 

A. Layer 3 VPN over GRE Tunnels 

B. L2TPv3 

C. RSVP Signaled Tunneling 

D. MPLS LDP Tunnels 

E. MPLS TE 

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Q5. 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.) 

A. HVR 

B. SVR 

C. SDR 

D. DRP 

E. VDC 

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Q6. An support engineer has been tasked to protect an ISP infrastructure from the growing number of encrypted DDoS attacks. The solution should also validate the eBGP peering. Which solution accomplishes these goals? 

A. BGP FlowSpec 

B. BTSH 

C. BGP Route Dampening 

D. BGP LS 

E. RTBH 

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Q7. DRAG DROP 

Drag and drop the OAM protocol listed on the left to the correct standard on the right. Not all options will be used. 

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Q8. SSO was configured on a Cisco ASR 1006 Router by using two RPs. When the main RP failed, a service disruption occurred. What are two reasons that the SSO did not work? (Choose two.) 

A. The standby RP has a different DRAM configuration than the primary RP. 

B. HSRP and NSF are not configured. 

C. The ESP that is installed in the Cisco ASR 1006 Router does not support SSO. 

D. The standby RP was not ready to switch over when the primary RP failed. 

E. The standby RP has a different IOS version than the primary RP. 

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Q9. Refer to the exhibit. 

IS-IS configuration has been deployed using the default IS-IS metric value and default IS-IS metric-style. The SP decides to implement MPLS TE in all routers, except R5. In order to maintain IS-IS adjacency between R3 and R5 without impacting reachability, which command should be configured on R3 router under the IS-IS process? 

A. metric-style narrow 

B. metric-style wide 

C. metric-style narrow transition 

D. metric-style transition 

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Q10. Refer to the exhibit. Which IOS command under the BGP VPNv4 address family implements a secondary backup path to the destination 192.168.1.1? 

A. maximum-paths ibgp2 

B. bgp additional-paths install 

C. bgp recursion host 

D. bgp advertise-best-external 

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