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Cisco 300-420 Exam Syllabus Topics:

Section	Weight	Objectives
Topic 1: Advanced Addressing and Routing Solutions	25%	- IPv4 and IPv6 addressing design 1. Route summarization and aggregation 2. Structured addressing plans - Routing protocol design 1. EIGRP design 2. OSPF design 3. IS-IS design 4. Route redistribution and filtering
Topic 2: Network Services	15%	- Quality of Service (QoS) 1. Classification and marking 2. Policing, shaping, congestion management - IP services 1. DHCP, DNS, NAT - Multicast design
Topic 3: WAN for Enterprise Networks	20%	- WAN connectivity options 1. SD-WAN architecture and design 2. MPLS, Metro Ethernet, 4G/5G - VPN design 1. DMVPN, L2VPN, L3VPN 2. Site-to-site VPN - WAN resiliency and high availability
Topic 4: Security Services	10%	- Secure connectivity - Security architecture design 1. Threat defense integration 2. Network segmentation
Topic 5: Software-Defined Access (SDA)	5%	- SD-Access architecture - Fabric design and deployment - Control plane and data plane design
Topic 6: Advanced Enterprise Campus Networks	25%	- Wireless integration - Layer 3 campus design 1. Virtualization and segmentation 2. Routing in campus infrastructure - Layer 2 campus design 1. VLAN and trunking design 2. Hierarchical architecture 3. Spanning Tree Protocol optimization

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Cisco Designing Cisco Enterprise Networks Sample Questions (Q264-Q269):

NEW QUESTION # 264
Drag and drop the descriptions from the left onto the corresponding VPN types on the rights.

Answer:

Explanation:

NEW QUESTION # 265

Refer to the exhibit. Where must an architect plan for route summarization for the topology?

A. from the core toward the aggregation and the access toward the aggregation
B. from the aggregation toward the access and the access toward the aggregation
C. from the aggregation toward the core and the aggregation toward the access
D. from the core toward the aggregation and the aggregation toward the core

Answer: C

NEW QUESTION # 266
An engineer is working for a large cable TV provider that requires multiple sources streaming video on different channels using multicast with no rendezvous point. Which multicast protocol meets these requirements?

A. any-source multicast
B. BIDIR-PIM
C. PIM-SSM
D. PIM-SM

Answer: C

Explanation:
PIM Source-Specific Multicast is the correct multicast protocol when receivers can subscribe to traffic from known sources and the design must avoid rendezvous points. SSM uses the (S,G) model, where receivers explicitly join a multicast group from a specific source. Because the source is known at join time, the network does not need a shared tree or RP discovery process. This makes SSM attractive for broadcast-style streaming applications, such as video channels, where each stream source is known and receivers subscribe to specific channels. PIM Sparse Mode and Any-Source Multicast use an RP to allow receivers to discover active sources, so they do not meet the requirement of no rendezvous point. BIDIR-PIM also relies on an RP-rooted shared tree and is optimized for many-to-many applications rather than source-specific broadcast channels.
For a large cable TV provider streaming multiple video channels from defined sources, SSM simplifies the multicast control plane, eliminates RP dependency, and scales efficiently by creating only the source-specific state required by active receivers.

NEW QUESTION # 267
What is the purpose of Cisco Catalyst SD-WAN Cloud OnRamp?

A. It delivers secure access to business-critical applications across a multicloud environment.
B. It creates Cisco Catalyst SD-WAN application-aware policies and route-critical applications.
C. It simplifies and automates the process of connecting on-premises environments to the cloud.
D. It brings secure and private connectivity agnostics to all types of links and providers.

Answer: C

Explanation:
Cisco Catalyst SD-WAN Cloud OnRamp is designed to automate and streamline the connection between on-premises sites and cloud environments, making it simple to extend the SD-WAN fabric to public clouds and SaaS providers.

NEW QUESTION # 268
An architect must design a topology for a WAN network that satisfies these requirements:
- Devices must be able to make informed decisions.
- Suboptimal paths are allowed only in case of a failure.
- Backup paths must always be available.
Which topology must the architect select?

A. partial mesh
B. full mesh
C. Clos
D. hub and spoke

Answer: B

Explanation:
In a full mesh topology, each device is directly connected to every other device in the network.
This allows devices to make informed decisions because they have multiple paths to reach each other.
Suboptimal paths are only used in case of failure, as there are multiple connections available, and backup paths are always available.

NEW QUESTION # 269
......

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