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Cisco 300-420 Exam Syllabus Topics:

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

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Cisco Designing Cisco Enterprise Networks Sample Questions (Q112-Q117):

NEW QUESTION # 112

Refer to the exhibit. AS65533 and AS65530 are announcing a partial Internet routing table as well as their IP subnets. An architect must create a design that ensures AS64512 become a transit AS. Which filtering solution must the architect choose?

A. Next-hop
B. Maximum-prefix
C. No-advertise
D. No Export

Answer: B

NEW QUESTION # 113
A customer wants to migrate from an on-premises solution to a cloud-based solution. The customer's new design requires:
- secure access across the public internet
- simple point-to-point connection
- multi-vendor interoperability
Which solution must the engineer with an employee ID: 5095:36:638 choose?

A. VPLS
B. DMVPN
C. IPsec
D. GRE

Answer: C

Explanation:
IPsec provides secure access across the public internet with simple point-to-point connections and is supported by most vendors, ensuring multi-vendor interoperability.

NEW QUESTION # 114
Refer to the exhibit.

An engineer must design a WAN solution so that ISP-1 is always preferred over ISP-2. The path via ISP-2 is considered as a backup and must be used only when the path to ISP-1 is down. Which solution must the engineer choose?

A. R1:
- Routes advertised to ISP-1: 0x AS-path prepend
- Routes received from ISP-1: HIGH local-preference
- Routes advertised to R2: community NO-EXPORT
- Routes received from R2: no action
R2:
- Routes advertised to ISP-2: 5x AS-path prepend
- Routes received from ISP-2: LOW local-preference
- Routes advertised to R1: no action
- Routes received from R1: no action
B. R1:
- Routes advertised to ISP-1: 5x AS-path prepend
- Routes received from ISP-1: LOW local-preference
- Routes advertised to R2: community NO-ADVERTISE
- Routes received from R2: no action
R2:
- Routes advertised to ISP-2: 0x AS-path prepend
- Routes received from ISP-2: HIGH local-preference
- Routes advertised to R1: community NO-EXPORT
- Routes received from R1: no action
C. R1:
- Routes advertised to ISP-1: 0x AS-path prepend
- Routes received from ISP-1: HIGH local-preference
- Routes advertised to R2: no action
- Routes received from R2: community NO-EXPORT
R2:
- Routes advertised to ISP-2:5x AS-path prepend
- Routes received from ISP-2: LOW local-preference
- Routes advertised to R1: community NO-ADVERTISE
- Routes received from R1: no action
D. R1:
- Routes advertised to ISP-1: 0x AS-path prepend
- Routes received from ISP-1: LOW local-preference
- Routes advertised to R2: community NO-ADVERTISE
- Routes received from R2: no action
R2:
- Routes advertised to ISP-2: 5x AS-path prepend
- Routes received from ISP-2: HIGH local-preference
- Routes advertised to R1: no action
- Routes received from R1: community NO-ADVERTISE

Answer: A

NEW QUESTION # 115
An engineer must use YANG with an XML representation to configure a Cisco IOS XE switch with these specifications:
* IP address 10.10.10.10/27 configured on the interface GigabitEthernet2/1/0
* connectivity from a directly connected host 10.10.10.1/27
Which YANG data model set must the engineer choose?

A. Text, letter Description automatically generated
B. Text, letter Description automatically generated
C. Text, email Description automatically generated
D. Text, letter Description automatically generated

Answer: B

NEW QUESTION # 116
In a Cisco SD-Access fabric, switch node Is equivalent to an access layer switch In a traditional three-tier campus network design?

A. intermediate node
B. edge node
C. control plane node
D. border node

Answer: B

Explanation:
The Cisco SD-Access edge node is equivalent to the access-layer switch in a traditional three-tier campus design. Edge nodes are the fabric devices to which wired endpoints, access points, and other user-facing connections attach. They provide the anycast Layer 3 gateway for connected subnets, classify endpoints into virtual networks, apply policy information, and register endpoint reachability with the SD-Access control- plane node. In traditional campus terminology, this is the role normally performed by access switches at the edge of the network. Border nodes connect the SD-Access fabric to external networks, such as the WAN, data center, internet edge, or shared services. Intermediate nodes provide underlay transport between fabric nodes but do not attach endpoints to the fabric overlay. Control-plane nodes maintain mapping information rather than serving as access-layer attachment points. Understanding the edge-node role is fundamental because SD- Access policy and host mobility begin where the endpoint enters the fabric. Reference topics: SD-Access edge node, access layer, anycast gateway, endpoint registration, fabric roles.

NEW QUESTION # 117
......

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