Q1. Refer to the exhibit. 

Which VLAN interface does untagged traffic pass through? 

A. 1 

B. 2 

C. 3 

D. 4 

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Q2. Two Service Providers are beginning a merger between AS boundaries to provide MPLS-enabled services between their networks. Customers are using both Service Providers for services and, under certain circumstances; there are requirements to extend Layer 2 VPN circuits between each provider. The providers are in the process of completing the technical merger. However, the MPLS is not supported between the providers. Which action allows MPLS Layer 2 VPN circuits to be built over the inter-AS link? 

A. Create a GRE tunnel with the mpls ip command between ASBRs. 

B. Create Layer 2 VPN peerings between PE routers from each provider. 

C. Create a VPNv4 peering between ASBRs to advertise labels between each provider. 

D. Create a sham link between ASBR routers to enable a superbackbone peering for Layer 2 VPN signaling. 

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Q3. 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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Q4. Refer to the exhibit. 

An ISP engineer has been asked to identity a method to protect the PE and to control the number of BGP prefixes learned from his customers. The BGP session should be dropped if the PE router receives more than 1000 BGP prefixes. A syslog message should be generated when the number of BGP prefixes learned from CE exceeds 850. 

Which Cisco IOS command should the engineer apply on PE routers? 

A. neighbor 10.1.1.2 maximum-prefix 1000 85 

B. neighbor 10.1.1.2 maximum-prefix 1000 850 

C. neighbor 10.1.1.2 maximum-prefix 1000 85 warning-only 

D. neighbor 10.1.1.2 maximum-prefix 1000 850 warning-only 

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Q5. An operations engineer wants to manually optimize the MPLS Traffic Engineering tunnels. Which Cisco IOS EXEC command should the engineer apply? 

A. tunnel mpls traffic-eng autoroute destination 

B. tunnel mpls traffic-eng path-option lowest _number dynamic 

C. mpls traffic-eng reoptimize lockdown 

D. mpls traffic-eng multicast-intact 

E. mpls traffic-eng reoptimize 

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Q6. MPLS Service Providers use Route Distinguishers and Route Targets as methods to control routing for customer VRFs. Which two statements are true about Route Distinguishers and Route Targets? (Choose two.) 

A. Route Targets are values that are used by a PE router to uniquely identify a VRF within its local MP-BGP VPNv4 table. 

B. Route Distinguishers are used by PE routers by exporting and importing routes into a local VRF. 

C. Route Targets are used by PE routers to define how to import and export prefixes into a local VRF database. 

D. Route Targets are extended communities that are used by MP-BGP to identify routes as they are advertised to neighbor PE routers. 

E. Route Distinguishers are values that are used by a PE router to uniquely identify a VRF within its local MP-BGP VPNv4 table. 

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Q7. In an end-to-end Layer 2 service, which technology provides the capability to detect, verify, isolate, and report faults across a provider network? 

A. carrier detect 

B. UDLD 

C. BFD 

D. CFM 

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Q8. Refer to exhibit. NAT64 stateless configuration has been applied on RT1 router. The NAT64 prefix stateless used on this scenario is 2001:DB8:2::/96. ‘Host IPv4 only’ needs to test the connectivity with ‘Host IPv6 only’ using a ping command. Which is the correct ping command ‘Host IPv4 only’ should use? 

A. ping 27.1.1.10 

B. ping 27.1.1.10 source 2001:db8:2::7001:10A 

C. ping 2001:db8:2::7001:10A 

D. ping 2001:db8:2::112.1.1.10 

E. ping 2001:db8:2::27.1.1.10 

F. ping 2001:db8:2::1B01:10A 

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Q9. A network engineer wants to deploy a solution that allows for 200 DS1 s and 100 DS0s that are multiplexed to a single interface on a Cisco 7600 Series Router. Which interface type satisfies this requirement? 

A. Channelized T3/E3 (DS0) 

B. Channelized OC-12/STM-4 

C. OC-12/STM-4 

D. OC-48c/STM-16 

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Q10. 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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