2026 New 300-420 Braindumps Sheet | Latest Cisco 300-420: Designing Cisco Enterprise Networks 100% Pass

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Advanced Enterprise Campus Networks

This part makes up 25% of the whole content and measures the professionals’ knowledge of specific technical areas. These include the following:

Designing the campus network for high availability, including BFD, first-hop redundancy protocols, Graceful restart, and platform abstraction methods;
Explaining the considerations for the SD-Access fabric design for wired and wireless access. These include fabric design, overlay, border design, control plan design, segmentation, as well as scalability, multicast, virtual networks, and over-the-top & fabric for wireless.
Designing the infrastructures for multicampus Layer 3 (route summarization, convergence, VRFs, load sharing, redistribution, route filtering, and optimal topologies);
Explaining overlay, underlay, security, automation, wireless, control & data plan of SD-Access architecture;
Designing the infrastructures for campus Layer 2, such as fast convergence, PoE & WoL, STP scalability, and loop-free technologies;

Cisco 300-420 Exam, also known as Designing Cisco Enterprise Networks, is a certification exam that tests the knowledge and skills required to design enterprise-level networks. It is a professional-level exam that is intended for network architects, designers, and engineers with at least five years of experience in designing and implementing complex enterprise networks. 300-420 exam measures the candidate’s proficiency in design methodologies, wireless design, network services design, and security design.

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Cisco 300-420 Exam Brain Dumps - Associate 300-420 Level Exam

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To prepare for the Cisco 300-420 Certification Exam, candidates can take various training courses offered by Cisco, such as the Designing Cisco Enterprise Networks (ENSLD) training course. Candidates can also use study materials such as practice exams, study guides, and online resources to prepare for the exam.

Cisco Designing Cisco Enterprise Networks Sample Questions (Q367-Q372):

NEW QUESTION # 367
A company is working with a service to design a BGP policy. The company is dual-homed with the provider and wants to control which link inbound traffic transits. Also, the company will advertise several networks to the provider and needs propagation to go no further.
Which BGP attribute meet these requirements?

A. as-path
B. local preference
C. MED
D. community

Answer: D

Explanation:
BGP communities can be attached to advertised prefixes to signal the provider's inbound traffic- engineering policy for selecting the preferred customer link. The well-known no-export community prevents the provider from advertising those prefixes beyond its own autonomous system.

NEW QUESTION # 368

Refer to the exhibit. An architect must design an OSPF solution for an enterprise customer. The design must meet these requirements:
Limit the link flap impact to Area-1 and Area-2.
Any link failure must have minimal impact on voice and video traffic.
Which two OSPF solutions must the architect include in the design? (Choose two.)

A. increase hello and how timer.
B. Advertise default routes from the backbone to nonbackone areas.
C. Enable manual route summarization and configure all nonbackbone areas as stub networks.
D. Tune LSA and SPF throttling timers
E. Reduce the frequency of OR and BOR elections.

Answer: C,D

Explanation:
The OSPF design should include LSA/SPF timer tuning and summarization with appropriate stub-area design.
Cisco OSPF convergence is affected by failure detection, LSA generation, flooding, SPF scheduling, and routing-table installation. Tuning LSA and SPF throttling timers helps the network react quickly to genuine failures while avoiding excessive CPU churn during repeated flaps. This is especially important when voice and video traffic are sensitive to convergence delay. Manual route summarization at area boundaries reduces the number of detailed routes advertised between areas and limits the blast radius of link failures. Configuring nonbackbone areas as stub networks where appropriate also reduces external LSA propagation and lowers router resource use. Reducing DR and BDR election frequency is not a primary design tool for convergence, and increasing hello and hold timers would slow failure detection rather than improve it. Advertising default routes can be useful, but it does not by itself contain link flap impact. Reference topics: OSPF area design, LSA throttling, SPF throttling, route summarization, stub areas, convergence optimization.

NEW QUESTION # 369
In a Cisco SD-Access fabric, which node facilities connectivity between the fabric and networks external to the fabric?

A. edge
B. intermediate
C. border
D. control plane

Answer: C

Explanation:
The border node provides connectivity between the SD-Access fabric and networks external to the fabric. In Cisco SD-Access, fabric edge nodes connect endpoints, intermediate nodes provide underlay transport, and control-plane nodes maintain endpoint-to-location mappings. Border nodes sit at the boundary of the fabric and connect the overlay to external Layer 3 networks such as WAN, data center, Internet edge, shared services, or other fabrics. They de-encapsulate VXLAN traffic leaving the fabric and advertise or import reachability using VRFs and routing protocols. A border can be internal, external, or anywhere border depending on whether it connects to shared services, outside networks, or both. Intermediate nodes do not provide external fabric exit; they only transport traffic within the underlay. Edge nodes connect endpoints but are not normally the external gateway for the whole fabric. Control-plane nodes provide mapping services, not external connectivity. Reference topics: SD-Access border node, fabric exit, VRF mapping, external connectivity, overlay-to-underlay boundary.

NEW QUESTION # 370
Refer to the exhibit. The connection between SW2 and SW3 is fiber and occasionally experiences unidirectional link failure. An architect must optimize the network to reduce the change of layer2 forwarding loops when the link fails. Which solution should the architect include?

A. Utilize loop guard on SW2
B. Utilize 8PDU filter on SW3.
C. Utilize root guard on SW1.
D. Utilize BPDU guard on SW1

Answer: A

NEW QUESTION # 371

Refer to the exhibit. An engineer is designing a BGP solution for a client that peers with ISP1 for full Internet connectivity and with ISP2 for direct exchange of routes for several third parties. Which action, when implemented on the edge routers, enables the client network to reach the Internet through ISP1?

A. Apply the AS-path prepend feature for ISP2.
B. Apply route filtering such that the client advertises only routes originated from its own AS.
C. Run an eBGP session within different VRFs for each ISP.
D. Advertise a default route for downstream routers within the client network.

Answer: D

Explanation:
Section: WAN for Enterprise Networks

NEW QUESTION # 372
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