300-420試験の準備方法｜更新する300-420資格関連題試験｜正確的なDesigning Cisco Enterprise Networks試験攻略

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

>> 300-420資格関連題 <<

Cisco 300-420試験攻略 & 300-420資格模擬

Cisco持ってきた製品があなたにふさわしくないと感じることはよくありますか？ Ciscoラーニングガイドを使用することに決めた場合、問題に遭遇することは決してないことをお伝えしたいと思います。私たちの教材は、あなたが期待できない300-420高品質を持っています。学習教材のガイダンスで経験を積むと、以前よりも300-420時間を費やさず、明らかにDesigning Cisco Enterprise Networks進歩を感じることができます。また、Ciscoテストクイズは進歩に役立つことがわかります。

Cisco Designing Cisco Enterprise Networks 認定 300-420 試験問題 (Q140-Q145):

質問 # 140
What are the two purpose of the RPF check in multicast routing?

A. to ensure that multicast packets are dropped if they arrived on the interface used to route traffic back to the source address
B. to ensure that multicast packets are dropped if they arrived on the interface used to route traffic to the destination address
C. to ensure that multicast packets, no matter the interface they arrived on. are forwarded out all interfaces
D. to ensure that multicast packets are forwarded if they arrived on the interface used to route traffic to the destination address
E. to ensure that multicast packets are forwarded if they arrived on the interface used to route traffic back to the source address

正解：B、E

質問 # 141
Refer to the exhibit. An architect designed a BGP routing solution to reduce the number of IBGP peerings to conserve resources. The original design had a total of 36 IBGP peerings. The new design reduces the number of peerings by how many?

A. 0
B. 1
C. 2
D. 3

正解：A

解説：
The design uses three BGP route reflector clusters. Each three-router cluster requires three internal peerings, for a total of nine, and the three route reflectors require three peerings among themselves. The new design therefore uses 12 IBGP peerings, reducing the original 36 peerings by 24.

質問 # 142
An engineer is designing a PIM Anycast RP solution between two data centers. The design must ensure that RP1 in DC1 and RP2 in DC2 inform each other about specific sources that have joined locally. Which solution must the engineer choose?

A. Provision the RPs on the same IP subnet and extend the subnet at Layer 2 between data centers
B. Enable MSDP between RPs using separate unique loopback interfaces
C. No action is required because PIM registers from the source will, by default, reach each RP
D. Enable MSDP between RPs using the configured Anycast RP address

正解：B

解説：
Explanation
In Anycast RP, two or more RPs are configured with the same IP address on loopback interfaces. The Anycast RP loopback address should be configured with a 32-bit mask, making it a host address. All the downstream routers should be configured to "know" that the Anycast RP loopback address is the IP address of their local RP. IP routing automatically will select the topologically closest RP for each source and receiver.
MSDP used for Anycast RP is an intradomain feature that provides redundancy and load-sharing capabilities.
Enterprise customers typically use Anycast RP for configuring a Protocol Independent Multicast sparse mode (PIM-SM) network to meet fault tolerance requirements within a single multicast domain.
https://www.cisco.com/c/en/us/td/docs/ios/solutions_docs/ip_multicast/White_papers/anycast.html#wp1029118
https://www.cisco.com/c/en/us/support/docs/ip/ip-multicast/115011-anycast-pim.html
" You need to have a loopback on each prospective RP router, which is different than the loopback that is being used as the RP address."

質問 # 143

Refer to the exhibit. The distribution switches serve as the layer 3 boundary. HSRP preemption is enabled.
When the primary switch comes back after a failure, traffic is initially dropped. Which solution must be implemented to improve the design?

A. Increase the hello timers on both HSRP devices
B. Use the preempt delay feature on the primary HSRP device.
C. Use the preempt delay feature on the backup HSRP device
D. Configure a higher mac-refresh interval on both HSRP devices

正解：B

質問 # 144
Which component of Cisco SD-Access integrates with Cisco DNA Center to perform policy segmentation and enforcement through the use of security group access control lists and security group tags?

A. Cisco TrustSec
B. Cisco Identity Services Engine
C. Cisco Application Policy Infrastructure Controller Enterprise Module
D. Cisco Network Data Platform

正解：B

解説：
Policy management with identity services is enabled in an SD-Access network using ISE integrated with Cisco DNA Center for dynamic mapping of users and devices to scalable groups.
https://www.cisco.com/c/en/us/td/docs/solutions/CVD/Campus/cisco-sda-design- guide.html#CiscoDNACenterSoftware

質問 # 145
......

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