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2021 Nov 352-001 exam:

Q131. In a large enterprise network with multiple data centers and thousands of access devices, OSPF is becoming unstable due to link flapping. The current design has the access devices multihomed to large aggregation routers at each of the data centers. How would you redesign the network to improve stability? 

A. Add a layer of regional Layer 3 aggregation devices, but leave the ABR function on the data center aggregation routers. 

B. Add a layer of regional Layer 2 aggregation devices, but leave the ABR function on the data center aggregation routers. 

C. Add a layer of regional Layer 3 aggregation devices and move the ABR function to the regional aggregation device. 

D. Add a layer of regional Layer 2 aggregation devices and move the ABR function to the regional aggregation device. 


Q132. You are designing a Group Encrypted Transport virtual private network solution for an existing branch network. The existing network has the following characteristics: 

. 50 remote sites (with an additional 30 remote sites expected over the next 3 years) . Connectivity between all sites is via Multiprotocol Label Switching Layer 3 virtual private network service from a single provider . Open Shortest Path First is the routing protocol used between provider edge and customer edge routers . The customer edge routers will become group members performing the encryption between sites 

Which additional routing protocol would you use for the overlay routing between the group members? 

A. Open Shortest Path First (with a different process ID) 

B. Enhanced Interior Gateway Routing Protocol 

C. No additional protocol is necessary. 

D. External Border Gateway Protocol 

E. Routing Information Protocol Version 2 

F. Next Hop Resolution Protocol 


Q133. Which mechanism provides a Layer 2 fault isolation between data centers? 



C. advanced VPLS 


E. fabric path 


Q134. What are two design advantages to using virtual port channel? (Choose two.) 

A. enhanced system availability through multiple systems 

B. reduced Spanning Tree Protocol convergence time 

C. loop management without use of Spanning Tree Protocol 

D. ability to use Spanning Tree Protocol blocked ports to forward traffic 

E. enhanced ability to recover from Spanning Tree Protocol changes 

Answer: AC 

Q135. When creating a network design that routes an IGP over L2VPNs, with which device does the remote CE router form an IGP adjacency? 

A. the hub site PE router 

B. the hub site CE router 

C. the directly connected PE router 

D. The IGP will not establish adjacency over the MPLS network. 


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Q136. Your company experienced a number of network incidents that had a significant impact on business operations. Because a root cause cannot be identified, your CTO asks you to help the network management team implement the FCAPS framework. On which two areas would you provide guidance to the network management team? (Choose two.) 

A. change management 

B. accounting management 

C. service level management 

D. fault management 

Answer: BD 

Q137. You are designing a large Frame Relay WAN for a customer. The routing protocol is OSPF. What is the effect on the routing table if the WAN interfaces are configured as point-to-multipoint? 

A. Only a route for the DR will be present in the routing table. 

B. Configuring point-to-multipoint has no effect on the routing table. The route that is configured with the area command will be seen in the routing table. 

C. Multipoint interfaces dynamically add the network of the connected interface. 

D. Multipoint interfaces dynamically add a /32 route for each neighbor in the WAN. 


Q138. Refer to the exhibit. 

A new IPv4 multicast-based video-streaming service is being provisioned. During the design-validation tests, you realize that the link between the two buildings is carrying multicast traffic even when there are no receivers connected to the switch in Building B and despite IGMP snooping being enabled on both Layer 2 switches and IGMPv2 runs on the hosts. Which design change will prevent the multicast traffic from being unnecessarily flooded throughout the campus network? 

A. Enable PIM snooping on both Layer 2 switches. 

B. Enable multicast storm control on the link between Switch 1 and Switch 2. 

C. Use static Layer 2 MAC forwarding entries on Switch 1. 

D. Change the IPv4 multicast group address such that it excludes the usage of link-local MAC addresses. 

E. Ensure that Switch 1 is an IGMP querier. 


Q139. 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 

Q140. 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