Shortcuts To 352-001（111 to 120）

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Q111. 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. 

Answer: D 

Q112. You are using iSCSI to transfer files between a 10 Gigabit Ethernet storage system and a 1 Gigabit Ethernet server. The performance is only approximately 700 Mb/s and output drops are occurring on the server switch port. Which action will improve performance in a cost-effective manner? 

A. Use a WRED random drop policy. 

B. Increase the queue to at least 1 GB. 

C. Enable the TCP Nagle algorithm on the receiver. 

D. Change the protocol to CIFS. 

Answer: A 

Q113. Refer to the exhibit. 

You must ensure that both core A and core B devices have only the minimum information required for reaching the spoke routers yet maintain full reachability during network failures. 

Which of the following design solutions accomplishes these requirements? 

A. Route summarization, with specific route leaking on hubs A and B 

B. Route summarization, with GRE tunnel on hubs A and B 

C. Implement PfR enhancements on hubs A and B. 

D. Implement ODR for hub-to-spoke routing. 

Answer: B 

Q114. During a corporate merger, a network designer is asked for a solution that will provide connectivity between the two enterprise networks. The solution must have the ability to support video sessions so that the CEO can message merger activities to the employees. The designer decides to consider multicast as a transport with MSDP to provide redundancy. Which transport feature does the network designer need to apply to the interconnecting firewall to ensure that Source-Active messages between the MSDP peers can be sent in both enterprise networks? 

A. unicast over a UDP connection 

B. multicast over a UDP connection 

C. unicast over a TCP connection 

D. multicast over a TCP connection 

Answer: C 

Q115. When a multiprotocol environment is designed to have several routers redistribute among the routing domains, how can routing loops be avoided? 

A. by using the AS-PATH attribute 

B. by using route tags 

C. by activating split horizon 

D. by implementing spanning tree 

Answer: B 

Q116. What is a key role for the access layer in a hierarchical network design? 

A. The access layer provides a security, QoS, and policy trust boundary. 

B. The access layer provides an aggregation point for services and applications. 

C. The access layer serves as a distribution point for services and applications. 

D. The access layer can be used to aggregate remote users. 

Answer: A 

Q117. You have created a network design that has two point-to-point Metro Ethernet circuits extending a single production VLAN between two data centers. Under normal circumstances, one circuit will carry traffic and spanning tree will block the other. If the company wants you to make use of both circuits to carry production traffic, which two technologies and features will you investigate to integrate into your network design? (Choose two.) 

A. EtherChannel 

B. MST 

C. Multichassis EtherChannel 

D. PVST+ 

Answer: AC 

Q118. As part of the security protocol for your network design, you have designated that option 82 is enabled for DHCP snooping. When option 82 is enabled, which information will be added to the DHCP request? 

A. switch MAC address and VLAN, module, and port 

B. remote ID and circuit ID 

C. switch IP address and VLAN, module, and port 

D. switch MAC address and switch IP address 

Answer: A 

Q119. When a design calls for spanning VLANs across a campus network, what are two issues that need to be addressed in the design? (Choose two.) 

A. network convergence 

B. network accessibility 

C. fault isolation 

D. application scalability 

E. user experience 

Answer: AC 

Q120. In an OSPF network, users in a particular OSPF non-backbone area are complaining about slow access speeds to a shared corporate resource in another OSPF area. Traceroutes show that theusers are taking a suboptimal default route to the destinations. Which solution will improve access speed? 

A. Make the area totally stubby so that the default can be followed along the best path. 

B. Create a virtual link between the areas so that traffic can shortcut directly between them. 

C. Implement policy routing to channel the traffic in the optimal direction. 

D. Leak specific summaries on the ABRs for the remote subnets in addition to the default. 

Answer: D