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Q111. In which two ways is a network design improved by the inclusion of IP Event Dampening? (Choose two.) 

A. reduces processing load 

B. provides sub-second convergence 

C. improves network stability 

D. prevents routing loops 

E. quickly detects network failures 

Answer: AC 


Q112. Which two statements describe how including Cisco IPoDWDM proactive protection in an optical design would minimize packet loss in the event of a fiber cut? (Choose two). 

A. It uses the FEC field on the OTN frame to trigger protection. 

B. It uses a "not to exceed" predefined BER threshold to cause traffic redirection. 

C. It reroutes the optical circuit after an event that impacts service. 

D. It is effective both when you have redundant and nonredundant Layer 3 MPLS paths. 

Answer: AB 


Q113. You are designing a core MPLS-based network with a single OSPF area with no external routes. Which two mechanisms can be used to improve convergence time during a failure? (Choose two.) 

A. incremental SPF 

B. route filtering 

C. graceful restart 

D. BFD 

Answer: AD 


Q114. A company wants to use an external appliance between its data center and WAN to optimize email and HTTP communications. The traffic flow must pass this appliance in both directions. The appliance is connected with only one interface to a Cisco IOS router and has a single IP address. Which two adjustments can you make to the network design so that the appliance is added into the traffic path? (Choose two.) 

A. Configure static routes to route the traffic to the appliance. 

B. Adjust the dynamic routing to route the traffic to the appliance. 

C. Configure NAT to force the traffic to the appliance. 

D. Configure a route map at the data center-side interface to forward the traffic to the appliance IP address. 

E. Configure a route map at the appliance-facing interface to forward the traffic to the appliance IP address. 

F. Configure a route map at the WAN-side interface to forward the traffic to the appliance IP address. 

Answer: DF 


Q115. Refer to the exhibit. 

You are designing a loop-free hierarchical VPLS service. Which two design considerations should be implemented for the pseudowires between the N-PE and U-PE routers? (Choose two.) 

A. Disable split horizon toward the N-PE routers. 

B. Disable split horizon toward the U-PE router. 

C. Enable split horizon toward the U-PE router. 

D. Enable split horizon toward the N-PE routers. 

E. Disable MAC learning on the U-PE route. 

F. Disable MAC learning on the N-PE routers. 

Answer: BD 


Q116. When developing an MVPN design, which performance and scalability consideration must be taken into account? 

A. CE end-to-end PIM adjacency establishment 

B. multicast data sent to all PE routers on the default MDT 

C. RP placement in the multicast VRF 

D. RP placement in the customer network 

Answer: B 


Q117. As part of a new network design, you are helping the Network Management Team to develop a proactive report to identify places in the network where problems may happen. The network management tool can poll the network devices only via SNMP GET operations. Which two threshold-crossing metrics should you include in this report? (Choose two.) 

A. packet loss 

B. CPU utilization 

C. heat dissipation 

D. IP reachability 

E. energy consumption 

F. link bandwidth utilization 

Answer: BF 


Q118. Refer to the exhibit. 

Four customer sites are connected through an EoMPLS-based VPLS over an MPLS provider. You are migrating from OSPF to multi-level IS-IS as the routing protocol to run on the four CE routers, and connectivity between all four sites is required. You want to control which CE or CEs will be elected as the Designated Intermediate System. Which two key aspects should be taken into account? (Choose two.) 

A. The DIS role for Level1 and Level2 can be performed by different routers. 

B. The CE with the second highest priority will be elected as the backup DIS on the LAN segment. 

C. One of the CE routers will be elected as the DIS based on interface priority then highest MAC address. 

D. It is recommended to use point-to-point link type on the CEs. 

E. If a new CE router is added to the VPLS cloud with a lower interface priority it will become the DIS. 

Answer: AC 


Q119. A company plans to use BFD between its routers to detect a connectivity problem inside the switched network. An IPS is transparently installed between the switches. Which packets should the IPS forward for BFD to work under all circumstances? 

A. IP packets with broadcast IP source addresses 

B. IP packets with identical source and destination IP addresses 

C. fragmented packets with the do-not-fragment bit set 

D. IP packets with the multicast IP source address 

E. IP packets with the multicast IP destination address 

F. IP packets with the destination IP address 0.0.0.0 

Answer: B 


Q120. A customer wants to understand the benefits of a proposed network design that utilizes SNMPv3. Which two network threats is SNMPv3 effective against? (Choose two.) 

A. modification of information threats 

B. masquerade threats 

C. denial of service threats 

D. traffic analysis threats 

Answer: AB