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Cisco 400-007 Exam Syllabus Topics:

SectionWeightObjectives
Topic 1: Control, Data, Management Plane and Operational Design25%- Design data plane transport and management plane strategies
  • 1. Network visibility, telemetry, and logging infrastructures
  • 2. End-to-end Quality of Service policies
- Design control plane routing architectures
  • 1. Multicast routing designs and protocol options
  • 2. Unicast routing protocols including OSPF, EIGRP, IS-IS, and BGP
  • 3. IPv4 and IPv6 dual-stack infrastructure transitions
Topic 2: Network Design30%- Design resilient and scalable campus architectures
  • 1. Layer 2 and Layer 3 boundary definitions
  • 2. High availability techniques and fast convergence mechanisms
- Design Service Provider and Enterprise WAN architectures
  • 1. WAN transport technologies including MPLS, Layer 3 VPN, and Metro Ethernet
  • 2. Data center interconnect solutions
  • 3. Software-Defined WAN design implementations
Topic 3: Security Design15%- Design secure perimeter and edge boundaries
  • 1. Enterprise cryptography architectures and VPN frameworks
  • 2. Firewall and Intrusion Prevention System deployment modes
- Design secure infrastructure controls
  • 1. Layer 2 and Layer 3 security defense mechanisms
  • 2. Network virtualization security and microsegmentation
Topic 4: Service Design15%- Incorporate automation and network programmability
  • 1. Infrastructure as Code tool adoption
  • 2. Data parsing structures using JSON and XML formats
- Design infrastructure and network virtualization
  • 1. MPLS architecture implementations such as LDP and Segment Routing
  • 2. Cloud integration models including hybrid and multi-cloud environments
Topic 5: Business Strategy Design15%- Evaluate project management methodologies impact
  • 1. Agile framework and iterative lifecycle alignment
  • 2. Waterfall framework implementation constraints
- Assess business goals and drivers
  • 1. Analyze company financial metrics and drivers like CAPEX, OPEX, and ROI
  • 2. Evaluate risk management and business continuity strategies
  • 3. Determine regulatory and compliance constraints

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Cisco Certified Design Expert (CCDE) Written Exam Sample Questions (Q281-Q286):

NEW QUESTION # 281
The General Bank of Greece plans to upgrade its legacy end-of-life WAN network with a new flexible, manageable, and scalable solution. The mam requirements are ZTP support, end-to-end encryption application awareness and segmentation. The CTO states that the main goal of the bank is CAPEX reduction.
Which WAN technology should be used for the solution?

Answer: D


NEW QUESTION # 282
Company XYZ branch offices connect to the headquarter sites using two links, MPLS and Internet. The company wants to design the traffic flow so that voice traffic goes through the MPLS link and all other traffic uses either the MPLS link or the Internet link. Which technique can the company use in their design to ensure that the traffic is not process switched?

Answer: A


NEW QUESTION # 283
Company XYZ is running a redundant private WAN network using OSPF as the underlay protocol. The current design accommodates for redundancy in the network, but it is taking over 30 seconds for the network to reconverge upon failure. Which technique can be implemented in the design to detect such a failure in a subsecond?

Answer: E

Explanation:
BFD (Bidirectional Forwarding Detection) provides rapid failure detection independent of OSPF's native hello
/dead timers.
BFD operates at subsecond intervals (as low as 50ms), detecting link failures almost immediately, allowing OSPF to react instantly upon failure detection.
BFD complements OSPF and significantly improves convergence time without compromising OSPF's stability.
Why other options are incorrect:
A: STP is irrelevant for Layer 3 routing failures.
B: Fate sharing describes failure domains, not detection mechanisms.
C: OSPF LFA provides fast reroute after failure detection but doesn't accelerate detection itself.
E: Flex links are used in Layer 2 switching, not for OSPF-based WAN failover.


NEW QUESTION # 284
Refer to the exhibit.

As part of a redesign project, you must predict multicast behavior What happens to the multicast traffic received on the shared tree (*,G), if it is received on the LHR interface indicated*?

Answer: C

Explanation:
https://www.cisco.com/c/en/us/support/docs/ip/ip-multicast/16450-mcastguide0.html
When a multicast packet arrives on an interface, the RPF process checks to ensure that this incoming interface is the outgoing interface used by unicast routing in order to reach the source of the multicast packet. This RPF check process prevents loops. Multicast routing does not forward a packet unless the source of the packet passes a RPF check. Once a packet passes this RPF check, multicast routing forwards the packet based only upon the destination address.


NEW QUESTION # 285
A European national bank considers migrating its on-premises systems to a private cloud offering in a non-European location to significantly reduce IT costs.
What is a primary factor prior to migration?

Answer: D

Explanation:
Organisations which receive and hold any of regulated data types to follow the GDPR requirements. According to GDPR, companies have to keep the data secure inside the EU and if the data is to be transferred outside of the UE, then it can only be transferred to countries or organisations that have signed up to equivalent privacy protection.


NEW QUESTION # 286
......

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