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2021 Mar 352-001 training

Q131. In order to meet your service level agreement, your network designer created a design solution that includes interface dampening. In which two ways will interface dampening benefit your overall network design? (Choose two.) 

A. Interface dampening uses an exponential backoff algorithm to suppress event reporting to the upper-level protocols. 

B. When the interface is dampened, further link events are not reported to the upper protocol modules. 

C. When the interface is dampened, further link events are reported to the upper protocol module. 

D. Periodic interface flapping that affects the routing system as a whole should have a period shorter than the system convergence time. 

Answer: AB 

Q132. A planned EBGP network will use OSPF to reach the EBGP peer addresses. Which of these conditions should be avoided in the design that could otherwise cause the peers to flap continuously? 

A. An ACL blocks TCP port 179 in one direction. 

B. IP addresses used to peer are also being sent via EBGP. 

C. The OSPF area used for peering is nonbackbone (not area 0). 

D. The routers are peered by using a default route sent by OSPF. 


Q133. A network designer is working with a company to improve convergence at the Layer 2 control plane and decides to use LACP. Which of these components does LACP use to create the system ID? 

A. LACP system priority and switch MAC address 

B. LACP port priority and switch MAC address 

C. LACP port priority and port number 

D. LACP system priority and port number 


Q134. A metro service provider is planning Resilient Ethernet Protocol for his backbone. Which two aspects must be considered before the network design is finalized? (Choose two.) 

A. Two Resilient Ethernet Protocol segments can be connected redundantly at two points. One connection will be blocked, using the Spanning Tree Protocol defined in IEEE 802.1D. 

B. UniDirectional Link Detection Protocol can be enabled on Resilient Ethernet Protocol interfaces to detect unidirectional failures. 

C. The guaranteed convergence recovery time is less than 50 ms for the local segment. 

D. A Resilient Ethernet Protocol segment is limited to a maximum of seven devices. 

E. VLAN load balancing for optimal bandwidth usage is supported in any Resilient Ethernet Protocol segment. 

Answer: BE 

Q135. When creating a design plan for IPv6 integration, you decide to use stateless encapsulation of IPv6 packets into IPv4 tunnels between subscriber CPEs and a border relay. Which deployment technique allows for this functionality? 

A. 6rd 

B. Dual-Stack Lite 

C. 4rd 



Leading 352-001 exam prep:

Q136. AS100 and AS200 each have two peering points in different parts of their network. AS100 would like to use one of the links and keep the other link as backup. What should be changed for the design inside AS100 for prefixes received from AS200? 


B. weight 


D. local preference 


Q137. Refer to the exhibit. 

A service provider using IS-IS has designed this network with all core links at the Layer 2 control plane. How will they adjust the design to reduce the flooding of update packets? 

A. Change the area type of the links to be level-1-2 to allow level-1 updates. 

B. Change the network type of the links from broadcast to point-to-point. 

C. Use IS-IS mesh groups. 

D. Configure SPF timers to be more aggressive so that updates are more quickly cleared from the queue. 


Q138. A junior engineer is implementing one of your optical designs and asks about CWDM (Coarse Wavelength Division Multiplexing). Which two features describe CWDM? (Choose two.) 

A. typically used over long distances, but requires optical amplification 

B. allows up to 32 optical carriers to be multiplexed onto a single fiber 

C. shares the same transmission window as DWDM 

D. uses the 850-nm band 

E. Passive CWDM devices require no electrical power. 

Answer: CE 

Q139. Which multicast technology provides a large, many-to-many connectivity for a new application while minimizing load on the existing network infrastructure? 

A. Bidirectional PIM 

B. PIM Sparse Mode 

C. Any-source Multicast 

D. Source Specific Multicast 


Q140. You are a network designer and are responsible for ensuring that the network you design is secure. How do you plan to prevent infected devices on your network from sourcing random DDoS attacks using forged source addresses? 

A. ACL-based forwarding 

B. ACL filtering by destination 

C. Unicast RPF loose mode 

D. Unicast RPF strict mode