[Sep-2025] Latest Cisco 400-007 exam dumps and online Test Engine
Cisco 400-007: Selling CCDE v3.0 Products and Solutions
Cisco 400-007 exam is a challenging and rigorous certification exam that requires a significant investment of time and effort. Candidates must prepare thoroughly by studying the exam objectives, reviewing industry best practices, and gaining hands-on experience in network design. Preparing for the exam may involve taking courses, attending workshops, and participating in online forums and study groups.
NEW QUESTION # 109
Company XYZ is running SNMPv1 in their network and understands that it has some flaws. They want to change the security design to implement SNMPv3 in the network. Which network threat is SNMPv3 effective against?
- A. Masquerade threats
- B. DDoS attack
- C. Man-in-the-middle attack
- D. Brute force dictionary attack
Answer: A
Explanation:
SNMPv1 and SNMPv2c use plaintext community strings and lack built-in encryption or authentication, making them vulnerable to various attacks, including spoofing and message tampering. SNMPv3 addresses these weaknesses by introducing:
* Authentication (to prevent impersonation or "masquerade")
* Encryption (privacy)
* Message integrity
"Masquerade threats" involve an attacker pretending to be a trusted source, which SNMPv3 can prevent via cryptographic authentication mechanisms.
Although SNMPv3 does provide improved security features like integrity and privacy, it is not specifically designed to mitigate volumetric attacks like DDoS or dictionary brute-force. SNMPv3 does not inherently stop man-in-the-middle attacks unless secure key exchanges and trusted paths are fully enforced, which may require additional protocols.
NEW QUESTION # 110
Refer to the exhibit.
There are multiple trees in the Cisco FabricPath All switches in the Layer 2 fabric share the same view of each tree. Which two concepts describe how the multicast traffic is load-balanced across this topology? (Choose two )
- A. A specific (S.G) multicast traffic is load-balanced across all trees due to better link utilization efficiency.
- B. The multicast traffic is generally load-balanced across all trees
- C. All trees are utilized at the same level of the traffic rate
- D. Every leaf node assigns the specific (S.G) to the same tree.
- E. A specific (S.G) traffic is not load-balanced
Answer: A,C
NEW QUESTION # 111
Drag and drop the end-to-end network virtualization elements from the left onto the correct network areas on the right.
Answer:
Explanation:
Explanation:
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NEW QUESTION # 112
Which BGP feature provides fast convergence?
- A. BGP FlowSpec
- B. BGP PIC |
- C. BGP-EVPN
- D. BGP-LS
Answer: B
NEW QUESTION # 113
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. asynchronous replication over geographically dispersed dual data centers via CWDM
- D. synchronous replication over geographically dispersed dual data centers via MPLS
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.
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NEW QUESTION # 114
You want to mitigate failures that are caused by STP loops that occur before UDLD detects the failure or that are caused by a device that is no longer sending BPDUs. Which mechanism do you use along with UDLD?
- A. BPDU guard
- B. BPDU filtering
- C. Root guard
- D. Loop guard
Answer: D
NEW QUESTION # 115
Drag and drop the characteristics from the left onto the corresponding network management options on the right.
Answer:
Explanation:
Explanation:
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NEW QUESTION # 116
Which two control plane policer designs must be considered to achieve high availability? (Choose two.)
- A. Control plane policers can cause the network management systems to create false alarms.
- B. Control plane policers are enforced in hardware to protect the software path, but they are hardware platform dependent in terms of classification ability.
- C. Control plane policers must be processed before a forwarding decision is made.
- D. Control plane policers require that adequate protocols overhead are factored in to allow protocol convergence.
- E. Control plane policers are really needed only on externally facing devices.
Answer: B,C
NEW QUESTION # 117
What are two examples of components that are part of an SDN architecture? (Choose two.)
- A. network plane
- B. application plane
- C. software plane
- D. control plane
- E. management plane
Answer: D,E
NEW QUESTION # 118
You have been tasked with designing a data center interconnect as part of business continuity. You want to use FCoE over this DCI to support synchronous replication. Which two technologies allow for FCoE via lossless Ethernet or data center bridging? (Choose two.)
- A. DWDM
- B. EoMPLS
- C. VPLS
- D. SONET/SDH
- E. Multichassis EtherChannel over Pseudowire
Answer: A,B
Explanation:
FCoE (Fibre Channel over Ethernet) requires a lossless Ethernet transport, typically achieved using Data Center Bridging (DCB) features such as Priority Flow Control (PFC). Only technologies that can preserve Ethernet frames end-to-end and support lossless characteristics can properly carry FCoE:
* A. DWDM (Dense Wavelength Division Multiplexing): Operates at the physical layer and is transparent to Ethernet, preserving frame integrity and lossless characteristics across long distances.
* B. EoMPLS (Ethernet over MPLS): Carries Ethernet frames directly over MPLS and can be engineered to support low-loss, low-latency transport appropriate for FCoE.
Why other options are incorrect:
* C. SONET/SDH encapsulates Ethernet but is not suitable for FCoE due to differences in timing and buffering.
* D. Multichassis EtherChannel over pseudowire may introduce additional control plane complexity and loss characteristics.
* E. VPLS introduces MAC learning, flooding, and buffering behaviors that can cause frame loss, which is not compatible with FCoE requirements.
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NEW QUESTION # 119
The administrator of a small branch office wants to implement the Layer 2 network without running STP. The office has some redundant paths. Which mechanism can the administrator use to allow redundancy without creating Layer 2 loops?
- A. Use two port channels as Flex links
- B. Use 802.3ad link bundling
- C. Use double-sided VPC on both switches
- D. Use FabricPath with ECMP
Answer: A
Explanation:
* B (Flex Links): Flex Links provide an alternative to Spanning Tree in simple Layer 2 designs. One link is active while the other is backup, preventing loops while maintaining redundancy without running STP.
Other options explained:
* A: vPC requires more advanced hardware and configuration.
* C: FabricPath is typically used in data centers, not small branches.
* D: 802.3ad is link aggregation, not redundant path management.
NEW QUESTION # 120
A legacy enterprise is using a Service Provider MPLS network to connect its head office and branches.
Recently, they added a new branch to their network. Due to physical security concerns, they want to extend their existing IP CCTV network of the head office to the new branch, without any routing changes in the network. They are also under some time constraints. What is the best approach to extend the existing IP CCTV network to the new branch, without incurring any IP address changes?
- A. L2TPv3
- B. GRE
- C. EoMPLS
- D. VXLAN
Answer: A
NEW QUESTION # 121
What are two examples of business goals to be considered when a network design is built? (Choose two.)
- A. integrate endpoint posture
- B. standardize resiliency
- C. minimize operational costs
- D. reduce complexity
- E. ensure faster obsolescence
Answer: C,D
NEW QUESTION # 122
An enterprise wants to migrate an on-premises network to a cloud network, and the design team is finalizing the overall migration process. Drag and drop the options from the left into the correct order on the right.
Answer:
Explanation:
NEW QUESTION # 123
An enterprise campus is adopting a network virtualization design solution with these requirements It must include the ability to virtualize the data plane and control plane by using VLANs and VRFs It must maintain end-to-end logical path transport separation across the network resources available grouped at the access edge Which two primary models can this network virtualization design be categorized? (Choose two)
- A. Services virtualization
- B. Edge isolation
- C. Session isolation
- D. Group virtualization
- E. Path isolation
Answer: A,E
NEW QUESTION # 124
Which two data plane hardening techniques are true? (Choose two)
- A. routing protocol authentication
- B. redundant AAA servers
- C. Control Plane Policing
- D. warning banners
- E. SNMPv3
- F. disable unused services
- G. infrastructure ACLs
Answer: A,G
Explanation:
* E (Infrastructure ACLs): iACLs control what traffic can reach network infrastructure devices, directly securing the data plane.
* G (Routing Protocol Authentication): Prevents malicious or spoofed routing updates which directly protect data plane routing decisions.
Why other options are incorrect:
* A: Warning banners are management plane hardening.
* B: Redundant AAA is management/control plane hardening.
* C: CPPr protects the control plane.
* D: SNMPv3 secures management plane.
* F: Disabling unused services typically applies to management plane or control plane, not data plane.
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NEW QUESTION # 125
Drag and drop the design characteristics from the left onto the correct network filter techniques on the right.
Not all options are used.
Answer:
Explanation:
NEW QUESTION # 126
Refer to the exhibit.
Company XYZ must design a DMVPN tunnel between the three sites Chicago is going to act as the NHS and the company wants DMVPN to detect peer endpoint failures Which technology should be used m the design?
- A. VPLS
- B. IP SLA
- C. GRE
- D. L2TPv3
Answer: B
NEW QUESTION # 127
Which two statements describe the hierarchical LAN design model? (Choose two)
- A. Changes, upgrades, and new services can be introduced in a controlled and staged manner
- B. It is the best design for modern data centers
- C. It is a well-understood architecture that provides scalability
- D. It is the most optimal design but is highly complex
- E. It provides a simplified design
Answer: A,C
Explanation:
The hierarchical LAN design model - access, distribution, core - provides:
* Scalability through structured hierarchy (A).
* Easier change management and staged deployments since functions are isolated at each layer (E).
CCDE v3.1 emphasizes hierarchy for long-term scalability, manageability, and operational stability.
Why other options are incorrect:
* B: Modern data centers favor spine-leaf over traditional hierarchy.
* C: The model simplifies rather than complicates.
* D: Simplification is not its primary advantage - scalability and modularity are.
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NEW QUESTION # 128
What is the most important operational driver in building a resilient and secure modular network design?
- A. Reduce the frequency of failures requiring human intervention
- B. Increase time spent on developing new features
- C. Dependencies on hardware or software that is difficult to scale
- D. Minimize app downtime
Answer: A
Explanation:
* The primary goal of resilient modular network design is to minimize the operational impact of failures by automating recovery and isolating fault domains.
* C: Reducing failures that require manual intervention improves availability, reduces downtime, and ensures stability even under fault conditions.
Why other options are incorrect:
* A: This is a limitation to avoid, not a design driver.
* B: Minimizing app downtime is an outcome, not the operational driver itself.
* D: Development time is not related to operational network resiliency.
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NEW QUESTION # 129
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The CCDE certification program is intended for professionals with extensive experience in network design and architecture. Cisco Certified Design Expert (CCDE v3.0) Written Exam certification is recognized globally as a mark of expertise in this field, and it is highly regarded by organizations looking to hire network designers and architects. The CCDE certification program is designed to help professionals develop the skills and knowledge needed to design and implement complex network infrastructure solutions.
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