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Cisco 400-007 Exam Syllabus Topics:

Section	Weight	Objectives
Network Design	30%	- Modular, resilient, scalable network architectures - Traditional and software-defined network design - Implementation, migration and transformation planning - Design under technical, operational and application constraints
Security Design	15%	- Segmentation, access control and policy enforcement - Regulatory compliance and governance - Security integration in network architecture - Threat mitigation and visibility design
Control, Data, Management Plane and Operational Design	25%	- Software-defined and controller-based solutions - Traffic flow and plane separation design - Automation, orchestration and model-driven management - Control plane architectures: centralized, decentralized, hybrid
Business Strategy Design	15%	- Business requirements analysis and alignment - Business continuity and sustainability design - Cost analysis and risk management - Project management methodologies impact
Service Design	15%	- Operational resilience and compliance - Support for voice, video, IoT, storage and applications - Service placement and data governance - Cloud connectivity and multi-service integration

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Cisco Certified Design Expert (CCDE) Written Exam Sample Questions (Q431-Q436):

NEW QUESTION # 431
Refer to the exhibit.

OSPF is running as the IGP to provide reachability to all AS100 networks R3 and R4 are the current ABRs at the boundary of OSPF Area0 and Areal Now BGP must be deployed within AS 100 because it will be receiving Internet routes from its eBGP peers (the service provider) connected to R1 and R2 What is an optimal solution for this deployment to configure BGP relationships and redistribute BGP learned routes into OSPF?

A. R1, R2, R3 and R4 must be set up with a neighbor relationship with R5 only must not be a route reflector.
B. A full mesh should be deployed between all the routers with mutual redistribution to take place at R1 and R2.
C. Configuration should be set up with R1 and R2, and R3 in one sub AS, with and R4 in another, and redistribution at R1 and R2.
D. R5 should be configured as a route reflector for R1, R2, R3 and R4. BGP routes must be redistributed at R1 and R2 into OSPF.

Answer: D

NEW QUESTION # 432
A company requires an RPO of less than 10 seconds to ensure business continuity. Which technology should be deployed?

A. Geographically dispersed data centers with asynchronous replication
B. A single data center with duplicated infrastructure, dual PSUs, and a UPS
C. A single data center with duplicated infrastructure and dual PSUs
D. Geographically dispersed data centers with synchronous replication

Answer: D

Explanation:
* C (Synchronous replication across data centers):Synchronous replication ensures zero or near-zero data loss (very low RPO), as data is written simultaneously to both sites. For an RPO of under 10 seconds, synchronous replication is mandatory.
Other options explained:
* A: Asynchronous replication may result in higher RPO.
* B/D: Single site designs introduce single points of failure for business continuity.

NEW QUESTION # 433
A service provider recently migrated to an SD-WAN solution for delivering WAN connections to its customers. One of the main challenges with the SD-WAN deployment is that branch site volume increases every year, which causes management complexity. Which action resolves the issue?

A. Set up a dedicated team to monitor and provision new customers
B. Implement a scalable network management system to manage all sites.
C. Build a service orchestration platform on top of the network controller
D. Adopt a well-structured SD-WAN service management lifecycle model

Answer: D

NEW QUESTION # 434
You are leading design discussions about IPv6 implementation into an existing Enterprise network. A question is raised regarding older Layer 2 switches that exist in the network, and if any changes are required to these switches for successful IPv6 implementation.
Which two responses do you give? (Choose two.)

A. If IPv6 anycast deployment is planned, then make sure that Layer 2 switches support DHCPv6 snooping at Layer 2 switches.
B. If IPv6 multicast deployment is planned, then make sure that Layer 2 switches support MLD snooping at Layer 2 switches.
C. If IPv6 anycast deployment is planned, then make sure that Layer 2 switches support ICMPv6 snooping at Layer 2 switches.
D. If IPv6 anycast deployment is planned, then make sure that Layer 2 switches support ND snooping at Layer 2 switches.
E. IPv6 is transparent on Layer 2 switches, so no changes are needed to the Layer 2 switches.

Answer: B,E

Explanation:
For IPv6 multicast, switches must support MLD snooping to control multicast traffic efficiently.
IPv6 itself is transparent to Layer 2 switching, so older switches can forward IPv6 frames without modification.

NEW QUESTION # 435
Refer to the table.

A customer investigates connectivity options for a DCI between two production data centers to aid a large-scale migration project. The migration is estimated to take 20 months to complete but might extend an additional 10 months if issues arise. All connectivity options meet the requirements to migrate workloads. Which transport technology provides the best ROI based on cost and flexibility?

A. Metro Ethernet
B. CWDM over dark fiber
C. MPLS
D. DWDM over dark fiber

Answer: A

NEW QUESTION # 436
......

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