NO.54 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?

NO.55 Refer to the exhibit.

You are a network designer who is given these design requirements:
Multicast services must be provided for Layer 3 VPN customers
The same forwarding technology must be used as Layer 3 VPN unicast packets Replication of multicast traffic is not allowed on the ingress PE Which multicast VPN technology conforms to the design requirements?

NO.56 A mobile network operator is designing an NGN backhaul and plans to migrate their legacy SDH and SONET-based transport network. The NGN network must achieve similar failover and failback times as the legacy network (50 milliseconds). Which method does allow for similar failover and failback times on the new packet-based network?

NO.57 Drag and drop the optical technology design characteristics on the left to the correct optical technologies on the right. Not all options are used

NO.58 Drag and drop the characteristics of the DMVPN technology from the left to the right.

NO.59 You have been hired by a startup company to provide optical services using MPLS-TP.
Which three options describe reasons to use the MPLS-TP standard in your design?
(Choose three.)

NO.60 There are two hub-and-spoke networks in the following exhibit. Each has about 60 branches spread over a wide area. Connect routers P4S-RE and P4S-RF to two different frame providers. Problems with one provider have impacted branches connected to the other provider and reaching the data center.
Which is the best place to build flooding domain boundaries to isolate these WAN issues?

NO.61 A company requests that you consult with them regarding the design of their production, development, and test environments. They indicate that the environments must communicate effectively, but they must be kept separate due to the inherent failures on the development network. What will be configured on the links between the networks to support their design requirements?

NO.62 What are two benefits of using BFD for failure detection in the design of a network? (Choose two.)

NO.63 Refer to the exhibit.
This Layer 2 network is expected to add 150 VLANs over the next year, in addition to the existing 50 VLANs within the network. Which STP type will support this design requirement using the least amount of CPU resources and achieving load-balancing?

NO.64 A service provider would like to maximize forwarding memory, routing memory, and CPU resources on PE devices for enterprise customers having very few sites (two to three) and a large number of prefixes (several thousand). Which service should be offered by the service provider to these customers?

NO.65 Refer to the exhibit ACME Mining has four data centres in Santiago, Cape town, Mumbai, and Beijing, full-mesh connected via a 400 Mb/s EVP-LAN. They want to deploy a new mission-critical application with these requirements
* cluster heartbeat 2 Mb/s continuous (250 KB/s)
* cluster heartbeat one-way maximum latency 100 ms
These are the current ping tests results between the four data centers:

Which hosting data center pair can host the new application?

NO.66 Which two options are considered risks or concerns when both the Internet and VPN service functions are on the same PE router? (Choose two.)

NO.67 Refer to the exhibit. All routers in this network are configured to place all interfaces in OSPF area 5. R3 is the designated router on the 10.1.5.0/24 network. If you examine the OSPF database on R4, what would the network (type 2) LSA, generated by R3, contain?

NO.68 You have designed a network to support two offices connected by a T1. Your router serial interfaces will be configured with encapsulation PPP. What will happen to your EIGRP neighbors if there is an LCP failure once your network is implemented?

NO.69 A company supports IPv4 and IPv6 addresses, and they need to be able to support flow-based translations for multiple IPv6 devices to a single IPv4 address. Which address family translation design solution should be recommended?

NO.70 In Layer 2 access campus design, which mechanism should be enabled on access ports to protect the campus network from undesired access switches and looped ports?

NO.71 What are three tools for ongoing monitoring and maintenance of a voice and video environment? (Choose three.)

NO.72 A company wants to use SSM as the multicast routing protocol inside its network. Some of its multicast applications do not support IGMPv3. In which two ways can the mapping be done when these applications send IGMPv2 join messages? (Choose two.)

NO.73 As part of the network design, ACME Corporation requires the ability to export IPv6 information to better manage its network. Which version of NetFlow records is required to export this information?

NO.74 You are designing the QoS features for a large enterprise network that includes DMVPN. When would you need to configure QoS preclassify?