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Cisco 300-420 Exam Syllabus Topics:

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

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300-420参考書勉強 & 300-420受験対策書

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Cisco Designing Cisco Enterprise Networks 認定 300-420 試験問題 (Q297-Q302):

質問 # 297
Which two statements describe source trees in a multicast environment? (Choose two.)

A. Source trees use a single common root placed at some chosen point in the network
B. Source trees can introduce latency in packet delivery
C. Source trees can create suboptimal paths between the source and the receivers
D. Source trees guarantee the minimum amount of network latency for forwarding multicast traffic
E. Source trees create an optimal path between the source and the receivers

正解：D、E

解説：
Section: Network Services

質問 # 298
An engineer is designing an enterprise campus network. The LAN infrastructure consists of switches from multiple vendors, and Spanning Tree must be used as a Layer 2 loop prevention mechanism. All configured VLANs must be grouped in two SIP instances. Which standards-based Spanning Tree technology supports this design solution?

A. Rapid PVST
B. STP
C. MSTP
D. RSTP

正解：C

質問 # 299
Refer to the exhibit.

Refer to the exhibit A customer requires maximum uptime for the data plane between R1 and R3 running OSPF Which solution must the design include for high availability if the routing process on R2 requires maintenance?

A. graceful restart on all routers
B. nonstop forwarding on R3 only
C. nonstop forwarding on R1 and R3
D. BFD on all routers

正解：C

質問 # 300

Refer to the exhibit. An engineer proposed this solution for a company that requires a loop-free. Layer 2 network design. The network will run 802.1W, and all links will be 1 Gbps. If all interfaces are up as point- to- point adjacencies, what are the expected port end states based on the design?

A. Eth1/2 on SW3 and SW4 will be m an Attn BLKbtate.
B. Eth1/1 on SW1 and SW2 will be in a Root FWD state.
C. Eth1/2 on SW2 and SW3 will be in a Desg FWD state
D. Eth1/3 on SW2 and SW3 will be m an Attn BLK state

正解：A

質問 # 301
In an SD-WAN architecture, which methods are used to bootstrap a vEdge router?

A. vManage or DNS records
B. DHCP options or manual configuration
C. DNS records or DHCP options
D. ZTP or manual configuration

正解：D

解説：
Explanation/Reference:

質問 # 302
......

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