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Reliable 400-007 Test Sample | 400-007 Reliable Mock Test

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Cisco 400-007 certification exam is recommended for network professionals who want to advance their careers in network design and architecture. The CCDE certification is recognized globally and is highly valued by employers in the networking industry. Cisco Certified Design Expert (CCDE) Written Exam certification demonstrates the candidate's expertise in designing complex network solutions for large organizations, which is a critical skill in today's fast-paced business environment. Candidates who pass the Cisco 400-007 Exam become CCDE certified, which is a significant achievement in their careers.

Cisco Certified Design Expert (CCDE) Written Exam Sample Questions (Q185-Q190):

NEW QUESTION # 185
Company XYZ allows employees to use any open desk and plug their laptops in. They want authentication using domain credentials and future capability for segmentation within the same subnet. Which protocol can be recommended?

A. LDAP
B. TACACS+
C. EAP
D. RADIUS

Answer: C

Explanation:
* B (EAP - Extensible Authentication Protocol):EAP is commonly used for 802.1X port-based authentication, allowing identity-based control for users on the network. This enables policy enforcement, identity-based segmentation (micro/macro segmentation), and leverages existing domain credentials via backend integration.
Other options explained:
* A: LDAP is backend directory, not an authentication protocol for access ports.
* C: TACACS+ is used primarily for administrative access.
* D: RADIUS transports the EAP exchange but is not the authentication protocol itself.

NEW QUESTION # 186
Two enterprise networks must be connected together. Both networks are using the same private IP addresses.
The client requests from both sides should be translated using hide NAT (dynamic NAT) with the overload feature to save IP addresses from the NAT pools. Which design addresses this requirement using only one Cisco IOS NAT router for both directions?

A. The NAT Virtual Interface must be used to achieve this requirement
B. The overload feature is the default and does not have to be configured
C. The ip nat inside and ip nat outside commands must be configured at the interfaces with the overload option in both directions
D. This is not possible, because two Cisco IOS NAT routers are required to do dynamic NAT with overload in both directions
E. Two different NAT pools must be used for the ip nat inside source and the ip nat outside source commands for the overload feature in both directions

Answer: E

Explanation:
When both networks use overlapping private IP addresses, a single Cisco IOS NAT router can handle bidirectional NAT with dynamic NAT (overload). However, it requires careful configuration using:
* Two distinct NAT pools: One for traffic sourced from side A, and one for traffic sourced from side B.
* ip nat inside source and ip nat outside source commands with the overload keyword.
* Interfaces must be properly defined with ip nat inside and ip nat outside to reflect traffic directionality.
Option D is correct because it explicitly reflects the requirement to use two different NAT pools for overload in both directions, which ensures proper address translation and session tracking.

NEW QUESTION # 187
An architect receives a business requirement from a CTO that states the RTO and RPO for a new system should be as close as possible to zero. Which replication method and data center technology should be used?

A. asynchronous replication over dual data centers via DWDM
B. synchronous replication over dual data centers via Metro Ethernet
C. synchronous replication over geographically dispersed dual data centers via MPLS
D. asynchronous replication over geographically dispersed dual data centers via CWDM

Answer: B

Explanation:
* C (Synchronous replication over Metro Ethernet) provides real-time replication with zero data loss (RPO = 0) and minimal recovery time (RTO # 0).
* Metro Ethernet offers low-latency, high-bandwidth, and deterministic connectivity between closely located data centers, ideal for synchronous replication.
Why other options are incorrect:
* A & D: Asynchronous replication cannot guarantee zero RPO/RTO.
* B: MPLS introduces variable latency unsuitable for synchronous replication.
-

NEW QUESTION # 188
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?

A. Implement hub and spoke MPLS VPN over DMVPN (also known as 2547o DMVPN) between CE1 and CE2
B. The service provider must provide a Draft Rosen solution to enable a GRE tunnel between nodes PE1 and PE2
C. Enable a GRE tunnel between nodes C1 and C4
D. Enable a GRE tunnel between nodes C2 and C4
E. Enable a GRE tunnel between nodes CE1 and CE2

Answer: D

Explanation:
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.

NEW QUESTION # 189
Drag and drop the end-to-end network virtualization elements from the left onto the correct network areas on the right.

Answer:

Explanation:

Explanation:
Graphical user interface Description automatically generated with medium confidence

NEW QUESTION # 190
......

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