400-007 Study Guide: Latest [Dec 07, 2025] Realistic Verified 400-007 Dumps
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Cisco 400-007 exam is a challenging certification exam for IT professionals seeking CCDE certification. 400-007 exam is designed to test the knowledge and skills of IT professionals in the areas of network design, architecture, and implementation. CCDE certification is highly regarded in the IT industry and is recognized as a symbol of excellence in network design. IT professionals who hold CCDE certification are highly sought after by employers and are often able to command higher salaries.
NEW QUESTION # 92
As a service provider is implementing Strong Access Control Measures, which two of the following PCI Data Security Standard requirements must be met' (Choose two.)
- A. Restrict access to cardholder data on a need-to-know basis
- B. Assign a unique ID to each person with computer access
- C. Encrypt transmission of cardholder data across open or public networks
- D. Protect stored cardholder data
- E. Each location must require validating PCI compliance if business has multiple locations
Answer: A,B
Explanation:
# Explanation:
* A: PCI-DSS Requirement 8 mandates that each user have a unique ID to track and control access.
* B: PCI-DSS Requirement 7 enforces least privilege-only users with a legitimate business need should access cardholder data.
Other options:
* C: This relates to transmission security, not access control.
* D: PCI compliance requirements may be managed centrally depending on structure.
* E: Protecting stored data is critical but falls under data protection, not access control.
NEW QUESTION # 93
Company XYZ wants to deploy OSPF. The design plan requires that two OSPF networks be mutually redistributed at multiple locations and ensure end-to-end connectivity to all of the company's networks Which technology can be used to fulfill the requirements while avoiding the creation of routing loops?
- A. Use route maps on ASBRs to filter routes with tags so they are not redistributed.
- B. Redistribute routes as external type 2 routes.
- C. Change the router ID for both ASBRs.
- D. Create a virtual link between ASBRs.
Answer: A
Explanation:
https://www.cisco.com/c/en/us/support/docs/ip/open-shortest-path-first-ospf/4170-ospfprocesses.html
NEW QUESTION # 94
Company XYZ has 30 sites using MPLS L3 VPN and is concerned about data integrity. They want a centralized configuration model and minimal overhead. Which technology can be used?
- A. MGRE
- B. S-VTI
- C. GET VPN
- D. DMVPN
Answer: C
Explanation:
* D (Group Encrypted Transport VPN - GET VPN):GET VPN encrypts traffic across private WANs like MPLS while maintaining full-mesh routing visibility and offering centralized key management with minimal encapsulation overhead.
Other options explained:
* A: S-VTI is used for point-to-point IPsec tunnels.
* B: DMVPN is used for dynamic multipoint Internet-based VPNs.
* C: MGRE is a tunneling protocol but lacks security features.
NEW QUESTION # 95
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. L2TPv3
- B. IP SLA
- C. GRE
- D. VPLS
Answer: B
NEW QUESTION # 96
Refer to the diagram.
Which solution must be used to send traffic from the foreign wireless LAN controller to the anchor wireless LAN controller?
- A. Send packets from the foreign controller to the anchor controller via Layer 3 MPLS VPN or VRF-Lite
- B. Encapsulate packets into an EoIP tunnel and send them to the anchor controller.
- C. Send packets without encapsulation to the anchor controller over the routed network.
- D. Send packets from the foreign controller to the anchor controller via IPinIP or IPsec tunnel.
Answer: A
Explanation:
* In Cisco Wireless Guest Anchor deployments, traffic between foreign and anchor controllers is typically tunneled using CAPWAP (Control and Provisioning of Wireless Access Points).
* The CAPWAP tunnel operates over IP and can traverse MPLS VPN or VRF-Lite Layer 3 segmentation to maintain logical separation across different segments or geographic sites.
* This allows end-to-end isolation of guest traffic from the enterprise network into the DMZ anchor location, as shown in the diagram.
Why other options are incorrect:
* B: Unencapsulated traffic would expose guest traffic inside the enterprise network.
* C: EoIP is not a standard Cisco wireless tunneling method.
* D: IPinIP or IPsec tunnels are not typically used between WLCs for guest anchor tunneling.
NEW QUESTION # 97
An architect prepares a network design for a startup company. The design must be able to meet business requirements while the business grows and divests due to rapidly changing markets. What is the highest priority in this design?
- A. The network should have a dedicated core.
- B. The network should be modular.
- C. The network should be hierarchical
- D. The network should be scalable.
Answer: C
NEW QUESTION # 98
Which relationship between IBGP and the underlying physical topology is true?
- A. iBGP full mesh requirement does not dictate any specific network topology.
- B. iBGP full mesh requires an underlying fully meshed network topology.
- C. iBGP does not work on a ring network topology even with an underlying IGP.
- D. iBGP can work only on a ring network topology with a link-state protocol like OSPF or IS-IS.
Answer: A
Explanation:
iBGP's full mesh requirement refers to logical BGP session establishment, not physical network design. As long as reachability exists between iBGP peers (through an IGP like OSPF or IS-IS), iBGP sessions can be established regardless of physical topology (ring, star, partial mesh, etc.).
Key CCDE v3.1 design principles:
* Logical iBGP mesh # physical mesh requirement.
* Physical topologies can be optimized independently of iBGP peering structure.
* Control plane designs like route reflectors or confederations further optimize scalability without changing physical topology.
Why other options are incorrect:
* B: iBGP works on any topology where IP reachability exists.
* C: Physical full mesh is unnecessary for iBGP.
* D: iBGP functions over any IGP-provided reachability domain, including rings.
NEW QUESTION # 99
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 solution must provide a single 10G connection between locations and be able to run its own varying QoS profiles without service provider interaction based on the migration stages. All connectivity methods are at 10 Gbps. Which transport technology costs the least if the connectivity is required for just one year?
- A. MPLS wires only
- B. CWDM over dark fiber
- C. Metro Ethernet
- D. DWDM over dark fiber
Answer: A
NEW QUESTION # 100
You are designing an Out of Band Cisco Network Admission Control. Layer 3 Real-IP Gateway deployment for a customer Which VLAN must be trunked back to the Clean Access Server from the access switch?
- A. management VLAN
- B. user VLAN
- C. untrusted VLAN
- D. authentication VLAN
Answer: A
NEW QUESTION # 101
The Layer 3 control plane steers traffic toward destinations. Which two techniques offer a more dynamic, flexible, controlled, and secure control plane design in service provider networks? (Choose two.)
- A. Firewalls
- B. QoS policy propagation with BGP
- C. Remote black-holing trigger
- D. Access control lists
- E. Prefix lists
Answer: B,C
Explanation:
* C (QoS policy propagation with BGP - QPPB):Allows QoS policies to be dynamically applied based on BGP routing information, integrating policy control into routing decisions.
* D (Remote black-holing trigger):Enables dynamic mitigation of attacks (e.g., DDoS) by injecting blackhole routes through BGP to selectively drop malicious traffic upstream.
Other options explained:
* A/B/E: Static policy mechanisms that lack dynamic flexibility and responsiveness in modern service provider designs.
NEW QUESTION # 102
A network security team uses a purpose-built tool to actively monitor the campus network, applications, and user activity. The team also analyzes enterprise telemetry data from IPFIX data records that are received from devices in the campus network. Which action can be taken based on the augmented data?
- A. asset identification and grouping decisions
- B. reduction in time to detect and respond to threats
- C. integration with an incident response plan
- D. adoption and improvement of threat-detection response
Answer: B
NEW QUESTION # 103
Which purpose of a dynamically created tunnel interface on the design of IPv6 multicast services Is true?
- A. multicast source registration to the RP
- B. first-hop router registration to the RP
- C. transport of all IPv6 multicast traffic
- D. multicast client registration to the RP
Answer: C
NEW QUESTION # 104
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. Configure debounce timers
- B. Increase fast hello timers
- C. Implement BFD
- D. Enable LSP fast flood
Answer: C
NEW QUESTION # 105
You have been asked to design a remote access VPN solution to support up to 2000 devices. You must ensure that only corporate assets are allowed to connect to the VPN, and users must authenticate to gain access based on their user role. Users must use a password that they are already using to access existing applications. A user may not always use the same device to access the VPN. Which two options combined meet the requirements? (Choose two)
- A. Deploy certificates that are unique to each device
- B. Deploy a central authentication directory that users can be authenticated and authorized against
- C. Use local usernames and passwords on the VPN device
- D. Deploy certificates that are unique to each user
- E. Deploy a SSL VPN solution
- F. Deploy an IPsec VPN solution
Answer: B,E
Explanation:
The design requires scalability, centralized credential management, device independence, and role-based access:
* B (Central authentication directory): A centralized directory (such as Active Directory, RADIUS, or LDAP) allows the VPN solution to leverage existing user credentials, support role-based access control, and scale easily.
* F (SSL VPN): Provides remote access VPN services that support a variety of client devices, including unmanaged or personal devices, without requiring device certificates. SSL VPN is well-suited for scenarios where users may not always use the same device.
Other options explained:
* A: Local usernames/passwords do not scale to thousands of users and lack centralized policy control.
* C/E: Certificates would require device management and may not be feasible if users switch devices.
* D: IPsec VPN can work, but typically requires more complex client configuration and may not support flexible device usage as well as SSL VPN.
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NEW QUESTION # 106
Company XYZ has a hub-and-spoke topology over an SP-managed infrastructure. To measure traffic performance metrics, they implemented IP SLA senders on all spoke CE routers and an IP SLA responder on the hub CE router. What must they monitor to have visibility on the potential performance impact due to the constantly increasing number of spoke sites?
- A. CPU usage on the hub router
- B. memory usage on the hub router
- C. CPU and memory usage on the spoke routers
- D. interface buffers on the hub and spoke routers
Answer: A
NEW QUESTION # 107
Which two mechanisms avoid suboptimal routing in a network with dynamic mutual redistribution between multiple OSPFv2 and EIGRP boundaries? (Choose two.)
- A. matching EIGRP process ID
- B. route tagging
- C. AD manipulation
- D. route tagging
- E. route filtering
- F. matching OSPF external routes
Answer: B,D
NEW QUESTION # 108
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