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| Section | Objectives |
|---|---|
| End-to-End Enterprise Architecture Scenarios | - Large-scale enterprise design
|
| MPLS and VPN Architectures | - VPN design
|
| Multicast and Advanced Services | - Multicast design
|
| Infrastructure Design (Layer 2 / Layer 3) | - Layer 3 design
|
| Network Design Methodology and Principles | - Design lifecycle and methodology
|
| Routing and Path Control | - Traffic engineering
|
ITDumpsKR에서 Cisco인증 400-007덤프를 구입하시면 퍼펙트한 구매후 서비스를 제공해드립니다. Cisco인증 400-007덤프가 업데이트되면 업데이트된 최신버전을 무료로 서비스로 드립니다. 시험에서 불합격성적표를 받으시면 덤프구매시 지불한 덤프비용은 환불해드립니다.
질문 # 547
A large enterprise customer is planning a new WAN connection to its headquarters. The current architecture is dual homed with static routing, but users complain when a specific link fails. Failure of the other link does not affect any services or applications. The new WAN connection must provide the headquarters with a resilient network design and increase the return on investment.
Which solution should be recommended to the customer?
정답：A
질문 # 548
Refer to the exhibit.
The enterprise customer wants to stream one-way video from their head office to eight branch offices using multicast. Their current service provider provides a Layer 3 VPN solution and manages the CE routers, but they do not currently support multicast. Which solution quickly allows this multicast traffic to go through while allowing for future scalability?
정답：D
설명：
When a service provider does not support multicast over their Layer 3 VPN, the enterprise can useGRE tunnels between Customer Edge (CE) devicesto transport multicast traffic. This method allows the customer to encapsulate multicast packets in unicast GRE packets, which are routable through the provider's non- multicast core.
In this scenario, the most scalable and immediate solution is to establish a GRE tunnel betweenC2 (in the head office CE router path)andC4 (at the branch office). This setup ensures that multicast traffic originating at the head office is tunneled directly to the multicast receivers, bypassing the service provider's non-multicast- aware core.
This strategy is directly aligned with CCDE v3.1 principles, which emphasize:
Minimizing service provider dependency
Providing a scalable, customer-controlled overlay solution
Ensuring protocol compatibility across domains
Why other options are incorrect:
A: Tunnel between CE1 and CE2 is less optimal, as it may not originate or terminate at the exact multicast endpoints.
C: Tunnel between C1 and C4 is less aligned with CE-to-CE design expectations and may bypass required edge security/policy controls.
D: 2547oDMVPN is more complex and intended for full-scale VPN overlays, not quick multicast solutions.
E: Draft Rosen requires service provider support, which is currently unavailable, hence not a valid short-term option.
This solution ensures operational simplicity and future scalability with minimal provider dependency, which are core principles outlined in the CCDE v3.1 design methodology.
질문 # 549
Refer to the exhibit.
The enterprise customer wants to stream one-way video from their head office to eight branch offices using multicast. Their current service provider provides a Layer3 VPN solution and manages the CE routers, but they do not currently support multicast. Which solution quickly allows this multicast traffic to go through while allowing for future scalability?
정답：D
질문 # 550
Refer to the exhibit.
The enterprise customer wants to stream one-way video from their head office to eight branch offices using multicast. Their current service provider provides a Layer3 VPN solution and manages the CE routers, but they do not currently support multicast. Which solution quickly allows this multicast traffic to go through while allowing for future scalability?
정답：D
질문 # 551
Company XYZ must design a strategy to protect their routers from DoS attacks, such as traffic destined to the router's own route processor, using separate control plane categories. Which two capabilities can be used to achieve this requirement? (Choose two.)
정답：A,D
설명：
* D (Queue thresholding on the host subinterface):Protects CPU resources by limiting the amount of control plane traffic destined to the router itself.
* E (Port filtering on the host subinterface):Allows fine-grained filtering of control plane traffic based on specific protocols or ports, protecting sensitive processes like routing protocols or management access.
Other options explained:
* A, B, C: Transit subinterfaces protect forwarding plane transit traffic, not traffic destined to the control plane.
질문 # 552
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