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Cisco 400-007 Exam Syllabus Topics:

Section	Objectives
End-to-End Enterprise Architecture Scenarios	- Large-scale enterprise design 1. High availability and redundancy 2. Scalability and resiliency trade-offs - Service integration 1. Migration and transformation strategies 2. Hybrid connectivity design
Network Design Methodology and Principles	- Requirements gathering and analysis 1. Stakeholder requirements mapping 2. Business and technical constraints - Design lifecycle and methodology 1. Design phases and validation approaches 2. Trade-off analysis techniques
Routing and Path Control	- Routing protocol design 1. BGP policy and scalability 2. OSPF / IS-IS architecture - Traffic engineering 1. Path optimization techniques 2. Policy-based routing considerations
Infrastructure Design (Layer 2 / Layer 3)	- Layer 2 technologies 1. Spanning Tree design considerations 2. Ethernet scaling and segmentation - Layer 3 design 1. IGP selection and design 2. IP addressing and summarization
MPLS and VPN Architectures	- MPLS fundamentals 1. MPLS scalability design 2. Label switching architecture - VPN design 1. Multi-site connectivity strategies 2. L3VPN and L2VPN design models
Multicast and Advanced Services	- Network services 1. Security integration in design 2. QoS design principles - Multicast design 1. PIM architecture and scaling 2. Multicast distribution models

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Cisco Certified Design Expert (CCDE) Written Exam Sample Questions (Q291-Q296):

NEW QUESTION # 291
While access lists are generally associated with routers and firewalls, they can also be applied on layer 2 interfaces and to VLANs to provide granular security. Which are two benefits of using layer 2 access lists for segmentation? (Choose two.)

A. Contextual filtering
B. Reduced load at Layer 2
C. Containing lateral attacks
D. VLAN intercept
E. Traffic filtering

Answer: C,E

Explanation:
# Explanation:
* A: Layer 2 ACLs can block or allow specific MAC or IP traffic right at the switchport.
* C: Containing lateral attacks-Layer 2 ACLs help block unauthorized east-west traffic between hosts within the same VLAN.
Incorrect options:
* B: Contextual filtering is associated with next-gen firewalls or Layer 7 inspection.
* D: ACLs add processing load, not reduce it.
* E: VLAN intercept is not a valid Cisco term for ACL application.

NEW QUESTION # 292
The line between security and compliance is easily blurred and is, to a large extent, a moving target Drag and drop each of the requirements on the left to the appropriate section on the right

Answer:

Explanation:

Explanation:

#

NEW QUESTION # 293
Retef to the exhibit.

This network is running OSPF and EIGRP as the routing protocols Mutual redistribution of the routing protocols has been contoured on the appropriate ASBRs The OSPF network must be designed so that flapping routes m EIGRP domains do not affect the SPF runs within OSPF The design solution must not affect the way EIGRP routes are propagated into the EIGRP domains Which technique accomplishes the requirement?

A. route summarization on the appropriate ASBRS.
B. route summarization on the appropriate ABRS.
C. route summarization the ASBR interfaces facing the OSPF domain
D. route summarization on EIDRP routers connecting toward the ASBR

Answer: A

NEW QUESTION # 294
You want to add 900 VLANs to an existing 90 in a data center. What are two spanning tree concerns to consider?

A. BPDU does not support 990 VLANs
B. The PVST+ increases CPU utilization
C. To add 990 VLANs to the switching hardware, reserved VLANs require using extended VLAN
D. STP is increased by a factor of 10 convergence time
E. The diameter of the STP topology is increased

Answer: B,C

Explanation:
# Explanation:
B: Cisco switches reserve certain VLAN IDs. VLANs beyond 1005 are considered extended VLANs and may require special configuration (e.g., VTP transparent mode).
D: Each VLAN with PVST+ has its own instance of STP. Adding 900 more VLANs significantly increases the STP processing overhead on the switch's control plane and CPU.
Other options:
A: STP convergence time is more dependent on topology than VLAN count.
C: STP diameter is unrelated to the number of VLANs-it ' s a function of hops in the topology.
E: BPDU handling is VLAN-aware under PVST+; there's no direct per-BPDU VLAN limitation.
#

NEW QUESTION # 295
Company XYZ wants to secure the data plane of their network. Which two technologies can be included in the security design? (Choose two)

A. BEEP
B. MPP
C. CPPr
D. IP Source Guard
E. DAI

Answer: D,E

Explanation:
* A (DAI - Dynamic ARP Inspection): Prevents ARP spoofing attacks on the data plane.
* B (IP Source Guard): Prevents IP address spoofing by verifying IP/MAC bindings against DHCP snooping tables.
* Both are directly applied to securing the data plane (traffic forwarding layer).
Why other options are incorrect:
* C (BEEP): A transport protocol, not a data plane security feature.
* D (CPPr): Protects the control plane, not data plane.
* E (MPP): Protects management plane, not data plane.
-

NEW QUESTION # 296
......

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