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Q17. 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
Q18. Refer to the exhibit.
This diagram depicts the design of a small network that will run EIGRP on R1 and R2, and EIGRP Stub on R3. In which two ways will this network be impacted if there is link instability between R1 and R2? (Choose two.)
A. R1 will have routes in its routing table that originate from R2 and R3.
B. R3 will have routes in its routing table that originate from R1 and R2.
C. R2 will have routes in its routing table that originate from R1 and R3.
D. R3 will be transit for traffic between R1 and R2.
E. R3 will not be transit for traffic between R1 and R2.
Answer: BE
Q19. The Service Provider you work for wants to deploy CoS functionality on the P routers of the MPLS core, to provide a complete CoS solution to all customers that purchase services such as dedicated Internet access, MPLS Layer 3 VPN, and Layer 2 VPN (pseudowire). The design requirements are:
. The network supports four service queues with equal treatment for delay, jitter,
and packet loss.
. Queues are numbered 0–3, where 0 is the default queue.
. Three queues have one treatment, whereas the other queue has either one or two
treatments.
. The Service Provider manages control traffic, whereas the customers manage
business critical and best effort.
Which two statements could you recommend to allow for the appropriate level of bandwidth allocation? (Choose two.)
A. Control plane 10%, Real Time 30%, Business Critical 40%, Best Effort 20%
B. Control plane 80%. Real Time 10%, Business Critical 5%, Best Effort 5%
C. Control plane 90%, Real Time 5%, Business Critical 5%, Best Effort 0%
D. Control plane 20%, Real Time 40%, Business Critical 30%, Best Effort 10%
Answer: AD
Q20. Refer to the exhibit.
A customer runs OSPF with Area 5 between its aggregation router and an internal router. When a network change occurs in the backbone, Area 5 starts having connectivity issues due to the SPF algorithm recalculating an abnormal number of times in Area 5. You are tasked to redesign this network to increase resiliency on the customer network with the caveat that Router B does not support the stub area. How can you accomplish this task?
A. Set Area 5 to stubby at the ABR anyway.
B. Increase the bandwidth on the connection between Router A and Router B.
C. Turn on LSA throttling on all devices in Area 5.
D. Implement LSA filtering on the ABR, allowing summary routes and preventing more specific routes into Area 5.
E. Create a virtual link to Area 0 from Router B to the ABR.
Answer: D
Q21. 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
Q22. What are two benefits of using BFD for failure detection in the design of a network?
(Choose two.)
A. BFD can provide failure detection in less than one second.
B. BFD can be used as a generic and consistent failure detection mechanism for EIGRP, IS-IS, and OSPF.
C. BFD eliminates router protocol hello notification.
D. BFD can be used for all types of network interfaces.
E. BFD is independent of the network protocol.
Answer: AB
Q23. A network designer is redesigning an enterprise campus network to ensure that Ethernet switches proactively attempt to reconnect after a fiber cut. In the design, they will have to address areas where fiber cuts exist on campus from past troubleshooting, where a single fiber is disconnected in the fiber pair, leading to looping. Which feature could be implemented in the design to allow the Spanning Tree Protocol on the switches to be protected?
A. loop guard
B. UniDirectional Link Detection
C. UniDirectional Link Detection aggressive mode
D. root guard
Answer: C
Q24. You are asked to design a large campus network that will be using multicast for data transport. Which feature should be enabled at the Layer 2 access edge for host-only ports?
A. PortFast
B. BPDU guard
C. PIM-SM
D. PIM query interval
Answer: A