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To be eligible for the Cisco 300-420 Exam, candidates must have a good understanding of enterprise network design principles, including network topologies, protocols, and technologies. They should also have experience in implementing and troubleshooting enterprise networks, as well as knowledge of network security and management.
NEW QUESTION # 200
An engineer is looking for a standards-driven YANG model to manage a multivendor network environment.
Which model must the engineer choose?
Answer: D
NEW QUESTION # 201
A network engineer must design an MSDP multicast solution to provide RP resilience in a network with two separate domains. Also, multicast sources and receivers must register with the local RP. Which solution must the engineer choose?
Answer: C
Explanation:
The correct design is to use the same anycast RP address on loopback interfaces so receivers and sources register with their nearest available rendezvous point. Cisco Anycast RP designs use a common RP address advertised from multiple RP routers, allowing unicast routing to direct PIM joins and registers to the closest RP. MSDP is then used between the RP routers so each RP can learn about active sources registered to the other RP. This provides resilience and local registration while keeping RP reachability consistent for the multicast domain. Option B captures the key behavior: the RP loopback is configured with the same /32 address, and normal routing sends traffic to the closest RP. Configuring a hash value, group range splitting, or equal priority alone does not provide the Anycast RP behavior required here. A professional design should also use unique loopbacks for MSDP peer sessions while keeping the shared anycast loopback as the RP address. Reference topics: Anycast RP, MSDP, PIM-SM rendezvous points, source registration, multicast high availability.
NEW QUESTION # 202 
Refer to the exhibit. An architect is developing a solution to consolidate networks while retaining device redundancy. The routing protocol for the WAN routers must be open standard, ensure high availability, and provide the fastest convergence time. Which solution must the design include?
Answer: D
Explanation:
Both WAN routers should run OSPFv2. The requirement explicitly says that the routing protocol must be open standard, provide high availability, and offer fast convergence. OSPF is an open-standard link-state routing protocol and is broadly supported across vendors. It builds a link-state database, calculates best paths with SPF, supports equal-cost multipath, and can be tuned with BFD, SPF throttling, LSA throttling, and hierarchical areas for resilient enterprise WAN designs. EIGRP is fast and operationally efficient in Cisco- only environments, but it is not the best answer when the requirement emphasizes an open-standard routing protocol. Running OSPFv2 on one router and OSPFv3 on another is invalid for a single IPv4 routing design because they would not form the intended common routing domain. Mixing IS-IS and OSPFv3 also fails the requirement for a unified design between the redundant routers. Therefore, both routers should run OSPFv2.
Reference topics: OSPFv2, open-standard routing, WAN routing high availability, link-state convergence, ECMP and BFD integration.
NEW QUESTION # 203
Which element of the Cisco SD-WAN architecture facilitates the functions of controller discovery and NAT traversal?
Answer: A
NEW QUESTION # 204
An engineer must use YANG with an XML representation to configure a Cisco IOS XE switch with these specifications:
* IP address 10.10.10.10/27 configured on the interface GigabitEthernet2/1/0
* connectivity from a directly connected host 10.10.10.1/27
Which YANG data model set must the engineer choose?
A)
B)
C)
D)
Answer: C
NEW QUESTION # 205
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