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Cisco 300-420 Exam Syllabus Topics:

SectionObjectives
Topic 1: Enterprise Network Design Principles- Scalability and high availability design
- Design methodologies and best practices
Topic 2: Enterprise Campus Network Design- Spine-leaf and hierarchical design models
- Campus LAN architecture
Topic 3: WAN and Edge Connectivity Design- Traditional WAN and internet edge design
- SD-WAN architecture and design considerations
Topic 4: Network Services Design- Routing protocols design (OSPF, EIGRP, BGP)
- Multicast and QoS design considerations
Topic 5: Security Design in Enterprise Networks- Segmentation and access control design
- VPN and perimeter security architecture
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 (Q103-Q108):

NEW QUESTION # 103
An architect is working on a design to connect a company's main site to several small to medium- sized remote branches. The solution must include redundant WAN links, but the customer has a limited budget and wants the ability to increase the link speed easily in the future. QoS will not on the branch routers so there is no need for consistent end-to-end QoS. Which solution does the architect propose?

Answer: B


NEW QUESTION # 104
Refer to the exhibit.

An architect must design an IGP solution for an enterprise customer. The design must support:
Physical link flaps should have minimal impact.
Access routers should converge quickly after a link failure.
Which two ISIS solutions should the architect include in the design? (Choose two.)

Answer: C,E

Explanation:
The correct IS-IS design combines tuned SPF/PRC behavior with a proper Level 1 and Level 2 hierarchy.
Reducing SPF and PRC intervals, within platform and stability limits, helps routers react more quickly to topology changes after a link failure. However, fast timers alone are not enough; the hierarchy must contain instability so physical link flaps in the access layer have limited impact on the rest of the network. Access routers should form Level 1 adjacencies inside their local area, while aggregation routers should operate as Level 1/Level 2 routers to connect the access area to the Level 2 backbone. This design gives access routers a simple local view and uses aggregation as the interarea boundary. Running all access and aggregation routers as L1/L2 across the network increases the size of the backbone and exposes more routers to wider flooding, which is the opposite of the requirement. Redistributing Internet routes into Level 1 is also poor design because it bloats the access area. Therefore, the right choices are C and E. Reference topics: IS-IS hierarchy, L1/L2 design, SPF and PRC tuning, access-layer convergence, fault containment.


NEW QUESTION # 105
Refer to the exhibit. An engineer is designing a multicampus Layer 3 infrastructure using EIGRP as the routing protocol. The design must provide quick replies to queries in the event of a downlink, prevent unnecessary queries, and ensure that traffic does not unnecessarily transit the access layer. Which two actions must the engineer take for the network design? (Choose two.)

Answer: B,C

Explanation:
https://www.ccexpert.us/network-design/distribution-layer-functionality.html


NEW QUESTION # 106
Which of the following images best matches the theme or description you are looking for?

Answer: B


NEW QUESTION # 107
Drag and drop the properties from the left onto the Cisco SD-WAN components that perform them on the right.

Answer:

Explanation:


NEW QUESTION # 108
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