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Cisco 300-420 Exam Syllabus Topics:

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

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                                          Cisco Designing Cisco Enterprise Networks Sample Questions (Q185-Q190):

                                          NEW QUESTION # 185

                                          Refer to the exhibit. As part of a design review of redistribution, a client requested that R2 be preferred over R3 for traffic passing toward the EIGRP domain. Which method meets this design requirement?

                                          Answer: D

                                          Explanation:
                                          The design must influence how EIGRP-learned routes are injected into the OSPF domain, so R2 should redistribute EIGRP into OSPF as metric-type E1 and R3 as metric-type E2. Cisco OSPF documentation distinguishes external Type 1 and Type 2 routes. An E1 route includes the external cost plus the internal OSPF cost to reach the ASBR, while an E2 route uses only the external metric. Cisco path selection prefers O E1 over O E2 for the same external destination. Therefore, making R2 advertise the EIGRP routes as E1 causes OSPF routers to prefer R2 as the exit toward the EIGRP domain. Option C adjusts OSPF-to-EIGRP redistribution, which is the wrong direction for traffic passing toward EIGRP from OSPF. Removing redistribution on R3 would reduce redundancy. Option D reverses the preference and would favor R3.
                                          Reference topics: OSPF external route types, EIGRP-to-OSPF redistribution, ASBR preference, E1 versus E2 metrics.


                                          NEW QUESTION # 186
                                          A company wants to switch from static routing to a dynamic routing protocol to ease the administrative and operational overhead. The network topology is hub and spoke, and the branches use DMVPN back to the hub using two 100 Mbps internet connections. Both links must be used due to spikes in traffic, and routing must take traffic utilization of the links into account. Also, the branch routers have limited memory and CPU resources. Which routing protocol and design solution must the company choose?

                                          Answer: B


                                          NEW QUESTION # 187
                                          What is a feature of the IaaS model?

                                          Answer: A

                                          Explanation:
                                          The IaaS (Infrastructure as a Service) model provides customers with virtualized computing resources over the internet, allowing them direct autonomy and control over the underlying hardware (such as servers, storage, and networking).


                                          NEW QUESTION # 188
                                          An engineer is designing a PIM Anycast RP solution between two data centers. The design must ensure that RP1 in DC1 and RP2 in DC2 inform each other about specific sources that have joined locally. Which solution must the engineer choose?

                                          Answer: A


                                          NEW QUESTION # 189
                                          An engineer uses Postman and YANG to configure a router with:
                                          OSPF process ID 200
                                          network 172.16.10.128/26 enabled for Area 0
                                          Which get-config reply verifies that the model set was designed correctly?

                                          Answer: C


                                          NEW QUESTION # 190
                                          ......

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