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[General] 400-007 Valid Test Prep, Valid 400-007 Test Materials

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【General】 400-007 Valid Test Prep, Valid 400-007 Test Materials

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2026 Latest PassExamDumps 400-007 PDF Dumps and 400-007 Exam Engine Free Share: https://drive.google.com/open?id=1VuKlMUcyxe0tso41g7R4ZsGK51y3kD6_
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Cisco 400-007 Certification Exam is an essential step for IT professionals who want to enhance their skills and knowledge in network design. It is a challenging exam that requires a deep understanding of network design principles, methodologies, and best practices. Passing the exam and earning the CCDE certification is a significant achievement that can open up new career opportunities and help IT professionals stand out in a competitive job market.
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To prepare for the CCDE certification exam, candidates must have a thorough understanding of network design principles, including network topology, protocols, and technologies. They must also be familiar with network design methodologies, including the Cisco Lifecycle Services approach. Additionally, candidates must be able to demonstrate their ability to design complex networks that meet specific business requirements and are scalable, secure, and reliable.
Cisco Certified Design Expert (CCDE v3.0) Written Exam Sample Questions (Q114-Q119):NEW QUESTION # 114

Refer to the exhibit. An architect must design an enterprise WAN that connects the headquarters with 22 branch offices. The number of remote sites is expected to triple in the next three years. The final solution must comply with these requirements:
* Only the loopback address of each of the enterprise CE X and Y routers must be advertised to the interconnecting service provider cloud network.
* The transport layer must carry the VPNv4 label and VPN payload over the MP-BGP control plane.
* The transport layer must not be under service provider control.
Which enterprise WAN transport virtualization technique meets the requirements?
  • A. EIGRP Over the Top
  • B. MPLS over BGP over multipoint GRE
  • C. DMVPN per VRF
  • D. Point-to-point GRE per VRF
Answer: B
Explanation:
* B (MPLS over BGP over mGRE):This design allows enterprises to run MPLS VPNs across their own infrastructure (Overlay VPN) while using MP-BGP for control plane distribution of VPNv4 routes. The mGRE tunnel structure allows scalability as branches grow, while MPLS VPN labels ensure traffic separation.
Other options explained:
* A: EIGRP OTT is not scalable for large VPN deployments.
* C: DMVPN per VRF becomes complex with high scale growth.
* D: Point-to-point GRE per VRF lacks scalability for 60+ sites.

NEW QUESTION # 115
Refer to the table.

A customer investigates connectivity options for a DCI between two production data centers. The solution must provide dual 10G connections between locations with no single points of failure for Day 1 operations. It must also include an option to scale for up to 20 resilient connections in the second year to accommodate isolated SAN over IP and isolated, dedicated replication IP circuits. All connectivity methods are duplex 10 Gbps. Which transport technology costs the least over two years, in the scenario?
  • A. Metro Ethernet
  • B. CWDM
  • C. MPLS
  • D. DWDM
Answer: A
Explanation:
Let's calculate Total Cost of Ownership (TCO) for 24 months based on the table and given scaling requirements:
-
Metro Ethernet:
* CAPEX = $45,000
* Installation Fee = $5,000
* OPEX = $125,000/year # $250,000 for 2 years
* Total = 45,000 + 5,000 + 250,000 = $300,000
DWDM:
* CAPEX = $250,000
* Installation Fee = $30,000
* OPEX = $100,000/year # $200,000 for 2 years
* Total = 250,000 + 30,000 + 200,000 = $480,000
CWDM:
* CAPEX = $150,000
* Installation Fee = $25,000
* OPEX = $100,000/year # $200,000 for 2 years
* Total = 150,000 + 25,000 + 200,000 = $375,000
MPLS:
* CAPEX = $50,000
* Installation Fee = $75,000
* OPEX = $150,000/year # $300,000 for 2 years
* Total = 50,000 + 75,000 + 300,000 = $425,000
-
Metro Ethernet clearly results in the lowest total cost while meeting dual 10G and scalable growth to 20 connections due to its simple provisioning and operational flexibility.
This approach fully aligns with CCDE v3.1 business-driven cost modeling principles: balancing cost, scalability, and operational simplicity.
Why other options are incorrect:
* B, C, D: All are more expensive after full 2-year calculation for the required scale.
-

NEW QUESTION # 116
You are designing the QoS policy for a company that is running many TCP-based applications. The company is experiencing tail drops for these applications. The company wants to use a congestion avoidance technique for these applications. Which QoS strategy can be used?
  • A. Weighted fair queuing
  • B. Low-latency queuing
  • C. First-in first-out
  • D. Weighted random early detection
Answer: D
Explanation:
* B (Weighted Random Early Detection - WRED):WRED proactively drops packets before buffers are full to avoid global synchronization in TCP traffic and prevent tail drops, thus improving overall TCP performance under congestion.
Other options explained:
* A: WFQ provides fairness but does not proactively avoid congestion.
* C: LLQ is for delay-sensitive traffic, not congestion avoidance for TCP.
* D: FIFO offers no QoS or congestion control.

NEW QUESTION # 117
An existing wireless network was designed to support data traffic only.
You must now install context Aware services for location tracking changes must be applied to the existing wireless network to increase the location accuracy? (Chose two)
  • A. Add access points along the perimeter of the coverage area.
  • B. Install additional access points in monitor mode where the co-channel interference would otherwise be affected
  • C. Increase the access point density to create an average inter-access point distance of less than 40 feet or 12.2 meters
  • D. Use directional antennas to provide more cell overlapping
  • E. Fine tune the radio configuration of the access point to have a higher average transmission power to achieve better coverage
Answer: A,B

NEW QUESTION # 118
What advantage of placing the IS-IS layer 2 flooding domain boundary at the core Layer in a three-layer hierarchical network is true?
  • A. The Layer 1 and Layer 2 domains can easily overlap
  • B. It reduces the complexity of the Layer 1 domains
  • C. The Layer 2 domain is contained and more stable
  • D. It can be applied to any kind of topology
Answer: C

NEW QUESTION # 119
......
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