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Cisco 400-007 Exam Syllabus Topics:

Section	Weight	Objectives
Topic 1: Service Design	15%	- Cloud connectivity and multi-service integration - Support for voice, video, IoT, storage and applications - Operational resilience and compliance - Service placement and data governance
Topic 2: Control, Data, Management Plane and Operational Design	25%	- Automation, orchestration and model-driven management - Control plane architectures: centralized, decentralized, hybrid - Traffic flow and plane separation design - Software-defined and controller-based solutions
Topic 3: Security Design	15%	- Segmentation, access control and policy enforcement - Security integration in network architecture - Threat mitigation and visibility design - Regulatory compliance and governance
Topic 4: Business Strategy Design	15%	- Cost analysis and risk management - Business requirements analysis and alignment - Business continuity and sustainability design - Project management methodologies impact
Topic 5: Network Design	30%	- Modular, resilient, scalable network architectures - Design under technical, operational and application constraints - Implementation, migration and transformation planning - Traditional and software-defined network design

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Cisco Certified Design Expert (CCDE) Written Exam Sample Questions (Q162-Q167):

NEW QUESTION # 162
You are designing a large-scale DMVPN network with more than 500 spokes using EIGRP as the IGP protocol. Which design option eliminates potential tunnel down events on the spoke routers due to the holding time expiration?

A. Increase the hold queue on the physical interface of the spoke routers
B. Increase the hold queue on the tunnel interface of the hub router
C. Apply QoS for pak_priority class
D. Increase the hold queue on the tunnel interface of the spoke routers
E. Increase the hold queue on the physical interface of the hub router

Answer: D

Explanation:
In DMVPN designs with many spokes, spokes may fail to receive periodic keepalives or routing updates if queues overflow during congestion, causing holding timers to expire and tunnels to flap. Increasing the hold queue size on the tunnel interface of the spoke routers allows them to buffer control plane packets during congestion and avoid premature tunnel teardown.
Why other options are incorrect:
* A, C, E: Physical interface queues do not directly affect tunnel protocol timers.
* D: QoS may help prioritize control plane traffic but doesn't address queue depth directly, which is the root cause of the issue.
-

NEW QUESTION # 163
A banking customer determines that it is operating POS and POI terminals that are noncompliant with PCI DSS requirements, as it is running TLSv1.0. The customer plans to migrate the terminals to TLSv1.2. What are two requirements to complete the migration? (Choose two.)

A. Protect all user systems against malware and frequently update antivirus software
B. Apply strong cryptography and security protocols to safeguard sensitive cardholder data.
C. Ensure that strong cryptography is applied for users who have administrative access through networks
D. Apply strong encryption for transmission of cardholder data across public networks.
E. Maintain a policy that addresses information security for employees and third parties.

Answer: D,E

NEW QUESTION # 164
Company XYZ has two routing domains in their network, EIGRP and OSPF. The company wants to provide full reachability between the two domains by implementing redistribution on a router running both protocols. They need to design the redistribution in a way that the OSPF routers will see link costs added to external routes. How must the redistribution strategy be designed for this network?

A. Redistribute using metric type 2 into EIGRP.
B. Redistribute using metric type 1 into EIGRP.
C. Redistribute using metric type 1 into OSPF.
D. Redistribute using metric type 2 into OSPF.

Answer: C

Explanation:
https://www.ciscopress.com/articles/article.asp?p=27573&seqNum=4#:~:text=Routes%20are%20redistributed%20in%20OSPF,shown%20in%20Figure%2014%2D2.

NEW QUESTION # 165
Which two statements describe the usage of the IS-IS overload bit technique? (Choose two)

A. It can be used to automatically synchronize the link-state database between Level 1 intermediate systems
B. lf overload-bit is set on a Level 2 intermediate system, the other Level 2 intermediate systems in the topology will stop using the overloaded IS to forward Level 2 traffic However, the intermediate system can still forward Level 1 traffic
C. It can be set in intermediate systems (IS-IS routers) to prioritize control plane CSNP packets.
D. It can be set in intermediate systems (IS-IS routers) to attract transit traffic from other intermediate systems
E. It can be set in intermediate systems (IS-IS routers) to avoid traffic black holes until routing protocols are fully converged after a reload operation.

Answer: D,E

NEW QUESTION # 166
Which two data plane hardening techniques are true? (Choose two)

A. SNMPv3
B. infrastructure ACLs
C. routing protocol authentication
D. warning banners
E. disable unused services
F. redundant AAA servers
G. Control Plane Policing

Answer: B,E

NEW QUESTION # 167
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