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Q31. A network administrator wants to implement an IP dampening feature for a network. Which parameter identifies how fast the accumulated penalty can decay exponentially? 

A. reuse threshold 

B. suppress threshold 

C. half-life period 

D. maximum suppress time 

Answer: C 

Explanation: Reference: 

http://www.cisco.com/c/en/us/td/docs/ios-xml/ios/iproute_pi/configuration/15-sy/iri-15-sy-book/iri-ip-event-damp.html 

Q32. What are three main characteristics of mLDP that differ from RSVP-TE? (Choose three.) 

A. The LSPs are built from tailend to headend. 

B. The LSPs are built from headend to tailend. 

C. It supports only P2MP LSPs. 

D. It supports both P2MP and MP2MP LSPs. 

E. Signaling is periodic. 

F. No periodic signaling is performed. 

Answer: A,D,F 

Explanation: http://www.cisco.com/c/dam/en/us/products/ios-nx-os-software/multicast-label-distribution-protocol-mldp/whitepaper_c11-598929_v1.pdf 

Q33. Refer to the exhibit. 

A CE connected to a service provider has an agreement to use 512Mbps of bandwidth. Which QoS configuration must be modified to ensure that the traffic matches the agreed bandwidth? 

A. Apply the same CE QoS configuration on PE on inbound direction. 

B. Change the outbound direction of the service-policy to inbound for ingress traffic shaping. 

C. Treat the class-default as best-effort by removing the shape average 512000 command 

D. Replace the shape keyword with police keyword in both classes 

E. Reconfigure the policy-map as a nested policy with the shaping applied as a parent for all child policies 

Answer: E 

Q34. Refer to the exhibit. After the BGP TCP negotiation between RouterA and RouterB, what will be the value of the keep alive timer and the hold-down timer, respectively? 

A. 3 seconds and 9 seconds 

B. 60 seconds and 180 seconds 

C. 10 seconds and 9 seconds 

D. no value, because BGP negotiation will not be successful 

E. 10 seconds and 10 seconds 

F. 10 seconds and 30 seconds 

G. 3 seconds and 30 seconds 

H. 3 seconds and 10 seconds 

Answer: A 

Q35. The product team at an ISP that offers VoIP services wants to add two-way video conferencing to their product offering. Which three QoS methods can be applied for real-time traffic on WAN links with speeds that are slower than 768 Kbps? (Choose three.) 

A. Apply voice-adaptive fragmentation to ensure that large video packets are fragmented and interleaved. 

B. Apply LLQ with video traffic that is dedicated in the priority queue. 

C. Apply MLP link fragmentation and interleaving to the interface. 

D. Apply CBWFQ with video traffic in its own class, which is marked with a PHB value of AF41. 

E. Apply CBWFQ with VoIP traffic in its own class, which is marked with a PHB value of EF. 

F. Apply LLQ with both voice traffic and video traffic in the same priority queue 

Answer: C,D,E 

Q36. Which are the three header fields that affect how Equal-Cost Multipath hashes traffic flow into interface groups? (Choose three.) 

A. source MAC address 

B. source port 

C. source IP address 

D. destination IP address 

E. IP protocol ID 

F. destination MAC address 

Answer: B,C,D 

Explanation: https://supportforums.cisco.com/document/111291/asr9000xr-loadbalancing-architecture-and-characteristics#field 

Q37. Refer to the exhibit. 

ABC and XYZ MPLS VPN customers are accruing Internet access. Both CEs are sending traffic to the Internet. Which statement about their connectivity is true? 

A. Both CEs will have connectivity. 

B. Only CE-XYZ will have connectivity. 

C. Neither CEs will have connectivity, as both CEs are using the same NATed subnet. 

D. Only CE-ABC will have connectivity. 

E. Neither CEs will have connectivity, as IAR does not have route back to the NATed subnet. 

Answer: D 

Q38. Which are the three benefits of using the Yang model? (Choose three.) 

A. Reduce lab footprint 

B. Improve access to resources 

C. Support interoperability that provides a standard way to model management data 

D. Support simplified network management applications 

E. Provide a scale virtual lab environment 

F. Support programmatic interfaces 

Answer: C,D,F 

Explanation: https://tools.ietf.org/html/rfc6020#page-11 

Q39. Refer to the exhibit. 

A service provider has multiple time sources in the environment for NTP. The time source at 10.0.4.1 is intended to be seen as a primary time source. What command can be issued on PE4 to fix the configuration, ensuring the proper NTP source will be issued? 

A. ntp peer 10.0.4.1 

B. ntp peer 10.0.4.1 prefer 

C. ntp server 10.0.4.1 source GigabitEthernet0/0 

D. ntp server 10.0.4.1 prefer 

Answer: D 

Explanation: http://www.cisco.com/c/en/us/td/docs/switches/datacenter/sw/5_x/nx-os/system_management/configuration/guide/sm_nx_os_cg/sm_3ntp.html#wp1106725 

Q40. Which two statements about forwarding equivalence class (FEC) are true? (Choose two) 

A. FEC might correspond to a destination IP subnet, but it might also correspond to any traffic class that the edge LSR considers significant. 

B. FEC is a group of IP packets that is forwarded over a different path, but with the same forwarding treatment. 

C. FEC is a group of IP packets that is forwarded over the same path, and with the same forwarding treatment. 

D. FEC is a group of IP packets that is forwarded over a different path, but with the different forwarding treatment. 

E. FEC is a group of IP packets that is forwarded over the same path, but with a different forwarding treatment. 

Answer: A,C