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Cisco 300-420 Exam Syllabus Topics:

SectionWeightObjectives
Software-Defined Access (SDA)5%- Control plane and data plane design
- Fabric design and deployment
- SD-Access architecture
Advanced Enterprise Campus Networks25%- Wireless integration
- Layer 2 campus design
  • 1. VLAN and trunking design
    • 2. Spanning Tree Protocol optimization
      • 3. Hierarchical architecture
        - Layer 3 campus design
        • 1. Virtualization and segmentation
          • 2. Routing in campus infrastructure
            Security Services10%- Security architecture design
            • 1. Network segmentation
              • 2. Threat defense integration
                - Secure connectivity
                WAN for Enterprise Networks20%- WAN connectivity options
                • 1. MPLS, Metro Ethernet, 4G/5G
                  • 2. SD-WAN architecture and design
                    - WAN resiliency and high availability
                    - VPN design
                    • 1. DMVPN, L2VPN, L3VPN
                      • 2. Site-to-site VPN
                        Network Services15%- Quality of Service (QoS)
                        • 1. Policing, shaping, congestion management
                          • 2. Classification and marking
                            - Multicast design
                            - IP services
                            • 1. DHCP, DNS, NAT
                              Advanced Addressing and Routing Solutions25%- Routing protocol design
                              • 1. IS-IS design
                                • 2. Route redistribution and filtering
                                  • 3. OSPF design
                                    • 4. EIGRP design
                                      - IPv4 and IPv6 addressing design
                                      • 1. Route summarization and aggregation
                                        • 2. Structured addressing plans

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                                          Cisco Designing Cisco Enterprise Networks Sample Questions (Q16-Q21):

                                          NEW QUESTION # 16
                                          Which AES mode should be used in a Cisco SD-WAN environment that includes multicast applications?

                                          Answer: D

                                          Explanation:
                                          AES Galois/Counter Mode is the appropriate AES mode for Cisco SD-WAN environments that include multicast applications. In SD-WAN data-plane security, encryption must protect traffic efficiently while supporting high-throughput forwarding and modern integrity protection. AES-GCM is an authenticated encryption mode, which means it provides confidentiality and integrity in a single efficient operation. It is well suited to modern IPsec designs and avoids the older requirement to combine a confidentiality mode with a separate authentication algorithm. Cipher Block Chaining and Cipher Feedback are older modes and are not preferred for this design requirement. Electronic Code Book is unsuitable because it exposes patterns in plaintext and is not considered secure for network transport encryption. Multicast support also requires a data- plane security model that can scale without per-flow negotiation overhead. AES-GCM is therefore the correct selection for a secure, efficient Cisco SD-WAN deployment that must carry multicast traffic. Reference topics: Cisco SD-WAN encryption, AES-GCM, IPsec data-plane security, multicast transport, authenticated encryption.


                                          NEW QUESTION # 17
                                          What is a feature of the SaaS subscription model?

                                          Answer: D


                                          NEW QUESTION # 18
                                          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?

                                          Answer: A


                                          NEW QUESTION # 19
                                          An organization plans to deploy multicast across two different autonomous systems. Their solution must allow RPs to:
                                          *discover active sources outside their domain
                                          *use the underlying routing information for connectivity with other RPs
                                          *announce sources joining the group
                                          Which solution supports these requirements?

                                          Answer: A

                                          Explanation:
                                          Explanation
                                          https://www.cisco.com/c/en/us/td/docs/ios-xml/ios/ipmulti_pim/configuration/xe-3s/asr903/imc-pim-xe-3s-asr90


                                          NEW QUESTION # 20
                                          Refer to the exhibit.

                                          An engineer must optimize the traffic flow of the network. Which change provides a more efficient design between the access and the distribution layer?

                                          Answer: C


                                          NEW QUESTION # 21
                                          ......

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