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Cisco 300-420 exam consists of 60-70 questions and has a duration of 90 minutes. 300-420 exam is computer-based and can be taken at any Pearson VUE testing center. 300-420 exam fee is $300 USD, and candidates must achieve a passing score of at least 750 out of 1000 to obtain the certification. 300-420 exam topics include advanced addressing and routing solutions, advanced enterprise campus networks, WAN technologies, enterprise network design, and security services.
To prepare for the Cisco 300-420 Exam, candidates can take advantage of various training resources provided by Cisco, such as instructor-led courses, online training modules, and self-study materials. They can also gain hands-on experience by working with Cisco technologies in real-world scenarios. Exam candidates are recommended to have at least three to five years of experience working with enterprise networks before taking the exam.
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Passing the Cisco 300-420 Certification Exam demonstrates that the candidate has a thorough understanding of enterprise-level network design and implementation concepts and can apply this knowledge to design and implement advanced network solutions. It also validates their ability to use Cisco's latest technologies and solutions to build robust, secure, and scalable networks that meet the business needs of their organizations.
NEW QUESTION # 307
How is sub-second failure of a transport link detected in a Cisco SD-WAN network?
Answer: D
NEW QUESTION # 308
What two features are benefits of using GRE tunnels with IPsec over using an IPsec tunnel alone in building-to-building site-to-site VPNs? (Choose two.)
Answer: A,B
NEW QUESTION # 309 
Refer to the exhibit. An architect must create a stable and scalable EIGRP solution for a customer. The design must:
*conserve bandwidth, memory, and CPU processing
*prevent suboptimal routing
*avoid any unnecessary queries
Which two solutions must the architect select? (Choose two.)
Answer: A,B
Explanation:
Route summarization and EIGRP stub routing are the two correct design techniques for a stable and scalable EIGRP deployment. Summarization reduces the number of prefixes advertised upstream, conserves bandwidth and memory, hides route flaps behind the summary boundary, and reduces the size of the EIGRP topology table. Stub routing prevents branch or access devices from being used as transit routers and limits the scope of EIGRP queries. This is critical because uncontrolled EIGRP query propagation can increase convergence time and processing load, especially in larger hierarchical networks. Prefix lists and distribute lists can filter routes, but filtering alone does not provide the same query-boundary and topology-hiding benefits as summarization and stubs. Static redistribution increases complexity and can create loop or policy risks if not controlled with tags and metrics. The question specifically asks to conserve bandwidth, memory, and CPU, prevent suboptimal routing, and avoid unnecessary queries; summarization and stub routing are the direct Cisco design answers. The architect should summarize at hierarchy boundaries and configure access or branch routers as EIGRP stubs where they should not provide transit. Reference topics: EIGRP summarization, EIGRP stub routing, query scope, hierarchical routing.
NEW QUESTION # 310
Since installing a cisco TelePresence system, the company is experiencing other application having response issues when the system in use. As a result, the company asked an architect to recommend a QoS solution. The customer is currently using a CBWFQ policy to manage traffic on an internet connection with a speed of 100 Mbps. Which link-capacity limit must the architect choose for strict-priority for the real-time traffic?
Answer: B
Explanation:
The strict-priority queue should be limited to approximately 33 Mbps on a 100 Mbps Internet connection.
Cisco QoS design guidance warns that strict priority traffic must be bounded, because excessive priority traffic can starve other queues and cause poor application performance for non-real-time traffic. For voice and interactive video, priority queuing is appropriate, but the priority class should normally be constrained to about one-third of the link capacity in a converged enterprise design. That makes 33 Mbps the best choice for a 100 Mbps link. A 75 Mbps strict-priority allocation is far too high and would leave inadequate bandwidth for routing, signaling, business data, and default traffic. A 50 Mbps allocation still gives real-time media excessive control of the interface. A 25 Mbps allocation may work in some environments but is not the standard upper-limit design answer for strict priority in this Cisco context. The architect should also classify TelePresence accurately, mark traffic consistently, and police the priority queue to protect the WAN.
Reference topics: LLQ, CBWFQ, strict priority limits, TelePresence QoS, WAN congestion management.
NEW QUESTION # 311
Refer to the exhibit.
Refer to the exhibit. An engineer must design an address translation solution to provide Internet connectivity for the corporate network. The design Is restricted to the 172.16.168.0/22 subnet. Which solution must the engineer choose?
Answer: D
NEW QUESTION # 312
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