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Cisco 300-420 Exam Syllabus Topics:

SectionObjectives
Topic 1: Enterprise Network Design Principles- Design methodologies and best practices
- Scalability and high availability design
Topic 2: Enterprise Campus Network Design- Campus LAN architecture
- Spine-leaf and hierarchical design models
Topic 3: WAN and Edge Connectivity Design- Traditional WAN and internet edge design
- SD-WAN architecture and design considerations
Topic 4: Security Design in Enterprise Networks- VPN and perimeter security architecture
- Segmentation and access control design
Topic 5: Network Services Design- Routing protocols design (OSPF, EIGRP, BGP)
- Multicast and QoS design considerations
Topic 6: Network Automation and Programmability- Controller-based networking design
- API-driven network automation concepts

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Cisco Designing Cisco Enterprise Networks Sample Questions (Q359-Q364):

NEW QUESTION # 359
Refer to the exhibit.

Refer to the exhibit. A network engineer with an employee ID: 4384:99:754 must design a BGP solution based on these conditions:
Traffic sessions occur between the branches and the data center.
Branch B has limited resources to process routing updates.
HQ must filter out all prefixes from branch A to R4.
Which outbound route filtering (ORF) solution must the engineer choose?

Answer: D


NEW QUESTION # 360
Which two LISP components are required in the Cisco SD-Access fabric control plane node?
(Choose two.)

Answer: A,C


NEW QUESTION # 361
Which Cisco vEdge router offers 20 Gb of encrypted throughput?

Answer: B


NEW QUESTION # 362
Refer to the exhibit.

A network engineer must improve the current IS-IS environment. The Catalyst switch is equipped with dual supervisors. Each time a stateful switchover occurs, the network experiences unnecessary route recomputation. Which solution addresses this issue if the upstream router does not understand graceful restart messaging?

Answer: B


NEW QUESTION # 363

Refer to the exhibit. An architect reviews the low-level design of a company ' s enterprise network and advises optimizing the STP convergence time. Which functionality must be to Gi1/0/1-10 to follow the architect ' s recommendation?

Answer: D

Explanation:
PortFast is the correct functionality for the Gi1/0/1-10 interfaces when those ports are endpoint-facing access ports. Cisco spanning-tree design uses PortFast to allow edge ports to transition directly to the forwarding state, avoiding the normal listening and learning delay associated with traditional STP convergence. That improves user and endpoint connectivity after link-up events and is especially important for workstations, phones, printers, and access devices that should not participate in the Layer 2 topology. Root guard and BPDU guard are protection features, not the primary convergence optimization requested by the architect.
UplinkFast was used in older STP designs to accelerate recovery for access switches with redundant uplinks, but it is not the edge-port functionality for interfaces Gi1/0/1-10. In a modern design, PortFast should be enabled only on true host-facing ports, normally together with BPDU guard to protect against accidental switch attachment. If the exhibit shows these interfaces as end-user access ports, PortFast is the feature that follows the recommendation to optimize STP convergence time. Reference topics: STP PortFast, edge-port convergence, BPDU guard, Layer 2 campus design.


NEW QUESTION # 364
......

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