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Cisco 400-007 Exam Syllabus Topics:

Section	Weight	Objectives
Topic 1: Business Strategy Design	15%	- Business continuity and sustainability design - Project management methodologies impact - Business requirements analysis and alignment - Cost analysis and risk management
Topic 2: Control, Data, Management Plane and Operational Design	25%	- Automation, orchestration and model-driven management - Traffic flow and plane separation design - Software-defined and controller-based solutions - Control plane architectures: centralized, decentralized, hybrid
Topic 3: Service Design	15%	- Support for voice, video, IoT, storage and applications - Cloud connectivity and multi-service integration - Operational resilience and compliance - Service placement and data governance
Topic 4: Security Design	15%	- Segmentation, access control and policy enforcement - Regulatory compliance and governance - Security integration in network architecture - Threat mitigation and visibility design
Topic 5: Network Design	30%	- Traditional and software-defined network design - Modular, resilient, scalable network architectures - Design under technical, operational and application constraints - Implementation, migration and transformation planning

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Cisco Certified Design Expert (CCDE) Written Exam Sample Questions (Q130-Q135):

NEW QUESTION # 130
Which design benefit of bridge assurance is true?

A. It prevents switch loops caused by unidirectional point-to-point link condition on Rapid PVST + and MST
B. It supposes a spanning-tee topology change upon connecting and disconnecting a station on a port
C. It allows small, unmanaged switches to be plugged into ports of access switches without the risk of switch loops.
D. It prevents switched traffic from traversing suboptimal paths on the network.

Answer: A

NEW QUESTION # 131
Refer to the exhibit. After a network audit a network engineer must optimize the current network convergence time. The proposed solution must consider link layer and control plane failures.

Which solution meets the requirements?

A. Increase fast hello timers
B. Implement BFD
C. Configure debounce timers
D. Enable LSP fast flood

Answer: B

NEW QUESTION # 132
[Main Topic: Security, Automation, and Policy Integration in Design]
A company is adopting IPv6 in a dual-stack campus network. The first IPv6-only application is now hosted in the data center. To prevent a malicious user from masquerading as the IPv6 default gateway, which two mechanisms should be used? (Choose two)

A. IPv6 snooping
B. IPv6 RA guard
C. port ACLs
D. IPv6 device tracking
E. IPv6 address glean

Answer: B,C

Explanation:
# Comprehensive and Detailed Explanation (CCDE v3.1 aligned):
A). IPv6 RA Guard:This feature helps mitigate rogue router advertisements (RAs), which attackers can use to spoof the default gateway in an IPv6 environment. RA Guard drops unauthorized or unexpected RAs at the access layer switch ports, preventing malicious devices from advertising themselves as routers.
E). Port ACLs (PACLs):Port-based ACLs can restrict which devices are allowed to send or receive RA packets on switch ports. By tightly controlling which sources can send traffic (including RA messages), port ACLs help prevent spoofing attempts.
Other Options:
# B. IPv6 Snooping:Not a standard or widely supported security feature; it is sometimes used synonymously with device tracking but is not a direct mitigation for spoofed RAs.
# C. IPv6 Device Tracking:Useful for monitoring IP-to-MAC bindings, but it does not prevent spoofing or gateway impersonation.
# D. IPv6 Address Glean:Primarily used for learning IPv6 addresses from traffic for things like DHCPv6 relay; not a security feature.
CCDE Blueprint Alignment:
Topic: Security, automation, and policy integration in design
Subdomain: IPv6 security, access control, rogue device prevention.
Let me know if you ' d like the next question explained!

NEW QUESTION # 133
In a multi-cloud environment, which two practices should be implemented to safeguard the integrity of Al-driven network decisions? (Choose two.)

A. implementing rigorous network segmentation among cloud providers to avert cross-cloud data leaks
B. implementing machine learning models exclusively within isolated, on-premises data centers to mitigate cloud vulnerabilities
C. employing a centralized Al control plane to oversee and supervise all machine learning models in the cloud
D. executing real-time change monitoring for all Al model modifications and setups across cloud platforms
E. employing federated learning to guarantee data privacy and integrity across multiple cloud environments

Answer: C,D

NEW QUESTION # 134
Drag and drop the optical technology design characteristics on the left to the correct optical technologies on the right. Not all options are used

Answer:

Explanation:

NEW QUESTION # 135
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