Cisco 400-007 Exam Questions - Tips To Pass

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Cisco 400-007 Exam Syllabus Topics:

Section	Weight	Objectives
Topic 1: Network Design	30%	- 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. Software-Defined WAN design implementations 2. WAN transport technologies including MPLS, Layer 3 VPN, and Metro Ethernet 3. Data center interconnect solutions
Topic 2: Control, Data, Management Plane and Operational Design	25%	- Design control plane routing architectures 1. Unicast routing protocols including OSPF, EIGRP, IS-IS, and BGP 2. Multicast routing designs and protocol options 3. IPv4 and IPv6 dual-stack infrastructure transitions - Design data plane transport and management plane strategies 1. Network visibility, telemetry, and logging infrastructures 2. End-to-end Quality of Service policies
Topic 3: Business Strategy Design	15%	- 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 - Evaluate project management methodologies impact 1. Waterfall framework implementation constraints 2. Agile framework and iterative lifecycle alignment
Topic 4: Security Design	15%	- Design secure perimeter and edge boundaries 1. Firewall and Intrusion Prevention System deployment modes 2. Enterprise cryptography architectures and VPN frameworks - Design secure infrastructure controls 1. Network virtualization security and microsegmentation 2. Layer 2 and Layer 3 security defense mechanisms
Topic 5: Service Design	15%	- 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 - Incorporate automation and network programmability 1. Infrastructure as Code tool adoption 2. Data parsing structures using JSON and XML formats

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Cisco Certified Design Expert (CCDE) Written Exam Sample Questions (Q24-Q29):

NEW QUESTION # 24

Refer to the exhibit Which two design options reduce the size of OSPF database in the shown topology?
(Choose two.)

A. Loop Free Alternate
B. prefix suppression
C. type 3 LSA filtering
D. incremental SPF
E. Layer 2 link aggregation between core switches

Answer: B,C

NEW QUESTION # 25
Refer to the exhibit. Company XYZ is currently running IPv4 but has decided to start the transition into IPv6. The initial objective is to allow communication based on IPv6 wherever possible and there should still be support in place for devices that only support IPv4. These devices must be able to communicate to IPv6 devices as well. Which solution must be part of the design?

A. host-to-host tunneling
B. address family translation
C. dual stack
D. 6rd tunneling

Answer: C

NEW QUESTION # 26
In an SDN architecture, what is present on the switches but not on the centralized controller?

A. Data plane functions
B. A southbound interface
C. A northbound interface
D. Control plane functions

Answer: A

Explanation:
# Explanation:
C: In SDN, switches retain the data plane functionality-they forward packets based on flow rules received from the controller.
A: Control plane functions are moved to the centralized controller in SDN.
B: Southbound interfaces are present on both controllers and switches for communication.
D: Northbound interfaces exist on controllers to interact with applications-not switches.
#

NEW QUESTION # 27
How can EIGRP topologies be designed to converge as fast as possible in the event of a point-to-point link failure?

A. Limit the query domain by use of default routes.
B. Limit the query domain by use of summarization.
C. Limit the query domain by use of distribute lists.
D. Build neighbor adjacencies in squared fashion.
E. Build neighbor adjacencies in a triangulated fashion.

Answer: B

NEW QUESTION # 28
Which two control plane policer designs must be considered to achieve high availability? (Choose two.)

A. Control plane policers must be processed before a forwarding decision is made.
B. Control plane policers are enforced in hardware to protect the software path, but they are hardware platform dependent in terms of classification ability.
C. Control plane policers can cause the network management systems to create false alarms.
D. Control plane policers require that adequate protocol overheads are factored in to allow protocol convergence.
E. Control plane policers are really needed only on externally facing devices.

Answer: B,D

Explanation:
* A: On most hardware platforms, control plane protection is implemented in hardware to safeguard CPU resources from overload due to excessive control traffic.
* E: Control plane policing must be carefully sized to allow sufficient protocol traffic (OSPF, BGP, etc.) during normal and convergence periods to ensure stability.
Why other options are incorrect:
* B: Policing should be applied universally, not just on external interfaces.
* C: False alarms are operational issues but not design considerations.
* D: Control plane policers are applied after forwarding decisions for traffic destined to the router CPU.
-

NEW QUESTION # 29
......

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