Cisco Certified Design Expert (CCDE) Written Exam Updated Torrent - 400-007 exam pdf & Cisco Certified Design Expert (CCDE) Written Exam Practice questions

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Cisco 400-007 Certification Exam is a rigorous exam that requires significant preparation. Candidates are expected to have a deep understanding of network design principles and experience in designing complex network solutions. Candidates are also expected to have a good understanding of the latest technologies and trends in the networking industry.

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The Cisco 400-007 exam is intended for network designers with at least seven years of experience in designing complex network infrastructures. Candidates who pass the Cisco 400-007 exam will demonstrate their expertise in designing scalable, secure, and highly available network infrastructures that meet the business needs of their clients. Cisco Certified Design Expert (CCDE) Written Exam certification is highly valued in the industry, and it can open up several job opportunities for certified professionals.

Cisco 400-007 Exam covers a wide range of topics related to network design and architecture. Some of the topics covered include network design principles and theory, network optimization and sizing, network security, and network virtualization. 400-007 exam also covers a range of advanced topics, such as IP multicast, MPLS, QoS, and network management.

Cisco Certified Design Expert (CCDE) Written Exam Sample Questions (Q309-Q314):

NEW QUESTION # 309
Which type of interface are OpenFlow and OpFlex?

A. Northbound interface
B. Cloud-bound interface
C. Southbound interface
D. Eastbound interface

Answer: C

Explanation:
# Explanation:
A: OpenFlow and OpFlex are examples of southbound interfaces in SDN (Software Defined Networking).
They are used by the SDN controller to communicate with the underlying infrastructure (e.g., switches, routers, hypervisors).
Other options:
D (Northbound): Interfaces used by applications to communicate with the SDN controller.
B, C: Not standard terminologies in SDN interface classification.
#

NEW QUESTION # 310
A customer with two 10 Mbps Internet links (active-active) experiences degraded performance when one fails. Static routing is used, and bandwidth upgrades aren't possible. The design must be failure-resistant without increasing CAPEX.
Which solution should be proposed?

A. Implement quality of service on the current links
B. Use dynamic routing for equal-cost multipath
C. Add an additional edge router connected to a second ISP
D. Add a third link to the current router

Answer: A

Explanation:
Comprehensive and Detailed Explanation:
* A: QoS (Quality of Service) helps preserve performance for critical applications when only one link is available by prioritizing high-value traffic. This solution works within existing infrastructure-meeting the "no additional CAPEX" requirement.
Other options:
* B and C introduce new hardware or services-thus increase CAPEX.
* D: Dynamic routing helps with failover but doesn't solve the bandwidth issue under failure conditions; QoS does.

NEW QUESTION # 311
Which MPLS TE design consideration is true?

A. MPLS TE replaces LDP and the dependency of the IGP to identify the best path
B. MPLS TE provides link and node protection
C. MPLS TE optimizes the routing of IP traffic, given the constraints imposed by backbone capacity and application requirements
D. MPLS TE requires Layer 3 VPN full-mesh topology deployment

Answer: C

Explanation:
* C: MPLS TE (Traffic Engineering) is designed to optimize IP traffic flow by considering bandwidth constraints, delay sensitivity, and administrative policy. It enables operators to steer traffic based on defined metrics rather than pure shortest-path IGP routes.
Other options:
* A: MPLS TE can coexist with LDP and still rely on IGP for link-state info; it does not replace LDP.
* B: MPLS TE by itself doesn't provide protection; it requires Fast Reroute (FRR) mechanisms like link
/node protection extensions.
* D: MPLS TE is independent of VPN topology; it can operate without requiring a full-mesh of Layer 3 VPNs.

NEW QUESTION # 312
How must the queue sizes be designed to ensure that an application functions correctly?

A. The sum of the queuing delay of all devices plus serialization delay in the chain must be less than or equal to the application required delay.
B. Each individual device queuing delay in the chain must be less than or equal to the application required delay.
C. The default queue sizes are good for any deployment as it compensates the serialization delay.
D. The queuing delay on every device in the chain must be exactly the same to the application required delay.

Answer: A

Explanation:
Application performance depends on the end-to-end delay experienced by the traffic, which includes:
* Queuing delay at each device.
* Serialization delay based on link speed and packet size.
* Propagation delay.
For the application to meet its performance SLA, the total of all delays (queuing + serialization + propagation) must remain within the application's maximum tolerable delay budget. This is critical for delay- sensitive applications such as voice or real-time video.
This directly aligns with CCDE v3.1 business-driven design, where application requirements dictate network performance guarantees.
Why other options are incorrect:
* A: Focusing on individual devices ignores cumulative delay.
* B: Uniform queuing delay isn't practical or necessary.
* C: Default queue sizes are not always suitable for real-time applications.
-

NEW QUESTION # 313
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 migration is estimated to take 20 months to complete but might extend an additional 10 months if issues arise. All connectivity options meet the requirements to migrate workloads.
Which transport technology provides the best ROI based on cost and flexibility?

A. Metro Ethernet
B. DWDM over dark fiber
C. MPLS
D. CWDM over dark fiber

Answer: A

NEW QUESTION # 314
......

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