Cisco 400-007 Cisco Certified Design Expert Online Training
Cisco 400-007 Online Training
The questions for 400-007 were last updated at Oct 15,2025.
- Exam Code: 400-007
- Exam Name: Cisco Certified Design Expert
- Certification Provider: Cisco
- Latest update: Oct 15,2025
You are designing a network running both IPv4 and IPv6 to deploy QoS.
Which consideration is correct about the QoS for IPv4 and IPv6?
- A . IPv4 and IPv6 traffic types can use use queuing mechanisms such as LLQ, PQ and CQ.
- B . IPv6 packet classification is only available with process switching, whereas IPv4 packet classification is available with both process switching and CEF.
- C . IPv6 and IB/4 traffic types can use a single QoS policy to match both protocols
- D . Different congestion management mechanisms need to be used for IPv4 and IPv6 traffic types
Refer to the exhibit.
An engineer has been asked to redesign the traffic flow toward AS 111 coming from AS 500.Traffic destined to AS 111 network 91 7 0.0/16 should come in via AS 100. while traffic destined to all other networks in AS 111 should continue to use the existing path.
Which BGP attributes are best suited to control this inbound traffic coming from BGP AS 500 Into the 91.7.0.0/16 network?
- A . Prepend AS path for the 91.7.0.0/16 network and set it for neighbor in AS 200.
- B . Use extended community for the 91.7.0.0/16 network, not advertising it to the bi-lateral peer.
- C . Use local preference on R1 for the networks that AS 500 advertises to AS 111.
- D . Set higher MED for neighbor in AS 100 to influence incoming traffic for the 91. 7.0.0/16 network.
DRAG DROP
Drag and drop the multicast protocols from the left onto the current design situation on the right.
Which three components are part of the foundational information security principles of the CIA triad? (Choose three.)
- A . cryptography
- B . confidentiality
- C . C. authorization
- D . identification
- E . integrity
- F . availability
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
Which two conditions must be met for EIGRP to maintain an alternate loop-free path to a remote network? (Choose two.)
- A . The Reported Distance from a successor is lower than the local Feasible Distance.
- B . The Reported Distance from a successor is higher than the local Feasible Distance.
- C . The feasibility condition does not need to be met.
- D . The Feasible Distance from a successor is lower than the local Reported Distance.
- E . A feasible successor must be present.
A customer asks you to perform a high level review of their upcoming WAN refresh for remote sites. The review is specially focused on their retail store operations consisting of 500+ locations connected via mutlipoint IPsec VPN solution.
Which routing protocol would be valid but would also be the most restrictive for the expansion of this deployment model?
- A . EIGRP
- B . IS-IS
- C . OSPF
- D . BGP
What is an architectural framework created by ETSI that defines standards to decouple network functions from proprietary hardware-based appliances and have them run in software on standard x86 servers?
- A . NFVIS
- B . NFV
- C . VNF
What best describes the difference between Automation and Orchestration?
- A . Automation refers to an automatic process for completing a single task and Orchestration refers to assembling and coordinating a set of tasks and conditions.
- B . Automation describes a hands-off configuration process while Orchestration refers to sets of automation tasks that require the network administrator to coordinate
- C . Automation refers to an automatic process for completing multiple tasks with conditions and Orchestration refers to executing tasks in parallel.
- D . Automation refers to scripting languages (Python. Ansible etc.) and Orchestration refers to commercial products that control configuration deployment
A BGP route reflector in the network is taking longer than expected to coverage during large network changes. Troubleshooting shows that the router cannot handle all the TCP acknowledgements during route updates.
Which action can be performed to tune the device performance?
- A . Increase the size of the hold queue.
- B . Increase the size of the large buffers.
- C . Decrease the size of the small buffers.
- D . Increase the keepalive timers for each BGP neighbor.
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