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Cisco 300-420 Certification Exam is an essential exam for IT professionals seeking to advance their careers in network design. It is a rigorous exam that tests the candidate's proficiency in network design principles, enterprise campus architecture, WAN technologies, security, and automation. By passing the exam, candidates can demonstrate their expertise in designing and implementing robust, scalable, and secure enterprise networks using Cisco technologies.

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Cisco 300-420 certification exam is a comprehensive test that covers a broad range of topics related to designing enterprise networks. 300-420 exam focuses on network design principles and concepts, including advanced addressing and routing solutions, advanced enterprise campus networks, WAN, security, and network services. 300-420 Exam also tests the candidate's knowledge of network virtualization technologies, network automation, and network programmability.

Cisco Designing Cisco Enterprise Networks Sample Questions (Q118-Q123):

NEW QUESTION # 118
Drag and drop the characteristics from the left onto the configuration protocols they describe on the right.

Answer:

Explanation:


NEW QUESTION # 119
Which consideration must be taken into account when using the DHCP relay feature in a Cisco SD-Access Architecture?

Answer: B

Explanation:
https://www.cisco.com/c/en/us/td/docs/cloud-systems-management/network-automation-and-management
/dna-center/tech_notes/sda_dhcp/b_cisco_sda_dhcp.html


NEW QUESTION # 120
An engineer is designing a QoS solution for a campus. The design must guarantee real-time traffic delivery during congestion, minimize the bandwidth consumption for possible virus or worm attacks, and reduce flooding of excessive traffic during times of congestion. Which two solutions must the engineer select?
(Choose two.)

Answer: C,E

Explanation:
The design should use a scavenger queue for excessive or suspicious traffic and apply queuing on the access- to-distribution uplinks where congestion can occur. Cisco QoS campus design commonly uses a less-than- best-effort scavenger class to constrain traffic associated with worms, peer-to-peer applications, bulk background flows, or other nonbusiness traffic. Placing this traffic in a scavenger queue minimizes the bandwidth it can consume during congestion without harming real-time applications. Real-time voice or video traffic should be placed in a strict-priority queue so it receives low delay and low jitter treatment when links are congested. Applying queuing on access-to-distribution links is important because those uplinks are common campus congestion points, especially during bursts or abnormal traffic events. A shaping policy is not the right tool for campus LAN uplinks, and indiscriminate policing of real-time traffic can cause drops that damage voice and video quality. Reference topics: campus QoS, scavenger class, strict-priority queue, access uplink queuing, congestion management, worm mitigation.


NEW QUESTION # 121
Refer to the exhibit. An engineer must optimize the traffic flow of the network.
Which change provides a more efficient design between the access and the distribution layer?

Answer: C


NEW QUESTION # 122
Drag and drop the elements from the left onto the YANG models where they and used on the right.

Answer:

Explanation:

Explanation:
The drag-and-drop answer follows the practical distinction between the YANG model families. IETF models are standards-based models intended to provide a common structure for widely implemented protocol and interface functions. OpenConfig models are vendor-neutral operational and configuration models developed for cross-vendor automation, with a strong focus on consistent telemetry and network state representation.
Cisco native models expose Cisco platform-specific capabilities and usually provide the deepest coverage for IOS XE, IOS XR, or NX-OS features that are not fully represented in a common model. The selected mapping therefore assigns model elements according to origin, portability, and feature depth. In a production automation design, engineers should start with open models when interoperability and long-term portability matter, but they should choose Cisco native models when a required Cisco feature is not available or is incomplete in IETF or OpenConfig. The choice is not cosmetic; it affects payload structure, namespace, validation behavior, and operational consistency across device families. Reference topics: YANG model families, IETF YANG, OpenConfig, Cisco native YANG, model-driven configuration.


NEW QUESTION # 123
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