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Q11. Refer to the exhibit. 

After this new OSPF design with per-packet load balancing was implemented, Host A reported that large file downloads from Server A became slow and sometimes failed. The operations team discovered that packets are arriving out of order on R1. Which cost-conscious redesign action will fix the issue? 

A. Upgrade all links to 10 Gbps. 

B. Add an IP SLA probe on R1 and R4. 

C. Adjust the OSPF auto-cost reference bandwidth on R4. 

D. Adjust the OSPF auto-cost reference bandwidth on all routers. 

Answer:


Q12. Which option is a BFD design consideration? 

A. BFD should not be used with RSVP-TE backup tunnels. 

B. BFD echo mode may reduce convergence time. 

C. BFD does not support sessions over MPLS LSPs. 

D. BFD is supported on indirectly connected peers. 

Answer:


Q13. You are designing a solution to eliminate the risk of high CPU utilization on a core network composed of CRS-1 devices. Which option would eliminate the risk of high CPU utilization across the network? 

A. Use Local Packet Transport Services (LPTS) to manage hardware SNMP flow rate. 

B. Use the in-band control plane policy feature to reduce the SNMP flow rate. 

C. Use the control plane policy feature and reduce SNMP flow rate. 

D. Use control-plane management-plane in-band and reduce the SNMP flow rate. 

E. Use the control-plane management-plane out-of-band feature to reduce the SNMP flow rate. 

Answer:


Q14. You are performing a BGP design review for a service provider that offers MPLS-based services to their end customers. The network is comprised of several PE routers that run iBGP with a pair of route reflectors for all BGP address families. Which two options about the use of Constrained Route Distribution for BGP/MPLS VPNs are true? (Choose two.) 

A. This feature must be enabled on all devices in the network at the same time. 

B. The RR must advertise the default route target filter toward the PE routers. 

C. The RRs do not need to advertise any route target filter toward the PE routers. 

D. Both PE and RR routers must support this feature. 

Answer: BD 


Q15. You have been asked to design a high-density wireless network for a university campus. Which three principles would you apply in order to maximize the wireless network capacity? (Choose three.) 

A. Increase the number of SSIDs to load-balance the client traffic. 

B. Choose a high minimum data rate to reduce the duty cycle. 

C. Make use of the 5-GHz band to reduce the spectrum utilization on 2.4 GHz when dual-band clients are used. 

D. Enable 802.11ag channel bonding on both 2.4 GHz and 5 GHz to increase the maximum aggregated cell throughput. 

E. Use directional antennas to achieve better sector separation channel reuse. 

F. Implement a four-channel design on 2.4 GHz to increase the number of available channels. 

Answer: BCE 


Q16. Refer to the exhibit. 

Company A is running a single-area OSPF, and Company B is running RIP as the IGP with no overlapping IP address spaces. Company A has just acquired Company B and both networks must be merged. Which three design components are recommended to guarantee connectivity and redundancy between the two networks? (Choose three.) 

A. Enable mutual redistribution between OSPF and RIP on one border router. 

B. Enable mutual redistribution between OSPF and RIP on Router A and Router B using route tags. 

C. Increase the administrative distance to 130 for the OSPF external prefixes on Router A and Router B. 

D. Implement an ACL on Router A and Router B to prevent OSPF external routes from being installed in the OSPF database. 

E. Filter external routes on Router A and Router B based on route tags. 

Answer: BCE 


Q17. Refer to the exhibit. 

Which two options are two characteristics of the single-tier headend architecture for DMVPN designs? (Choose two.) 

A. The mGRE and crypto functions are on the same router. 

B. Each DMVPN cloud has two different headend routers for high availability purposes. 

C. It is used in dual-cloud topologies for spoke-to-spoke connectivity. 

D. It only supports hub-and-spoke connectivity. 

E. Spokes cannot be used as RP in multicast deployments. 

Answer: AC 


Q18. Which mechanism provides a Layer 2 fault isolation between data centers? 

A. TRILL 

B. LISP 

C. advanced VPLS 

D. OTV 

E. fabric path 

Answer:


Q19. You are deploying a nationwide intranet solution for a company with 4 data centers and 400 remote branches connected via a provider-based solution. As part of the network design, you must ensure efficient content distribution of training material to remote sites. Which two VPN technologies leverage replication in the network core and provide for efficient bandwidth optimization? (Choose two.) 

A. VPLS 

B. EoMPLS 

C. MPLS Layer 3 VPN 

D. GRE 

E. GET VPN 

Answer: CE


Q20. The Customer X network consists of an MPLS core, IS-IS running as IGP, a pair of BGP route reflectors for route propagation, and a few dozens of MPLS-TE tunnels for specific tactical traffic engineering requirements. The customer engineering department has some questions about the use of the Overload Bit in the IS-IS networks and how it could be used to improve their current network design. Which three options about the Overload Bit are true? (Choose three.) 

A. It is not recommended on BGP route reflectors. 

B. It only affects the use of the respective node as a transit node, and networks advertised within the LSPs of the node are still reachable. 

C. It can be set on a router during the startup process for a fixed period of time. 

D. It forces the midpoint MPLS-TE node to reoptimize the primary tunnels going through the OL node. 

E. It can be set on a router until other interacting protocols have signaled convergence. 

Answer: BCE