300-420 Latest Dumps Pdf & 300-420 Latest Practice Questions

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Cisco 300-420 Exam Syllabus Topics:

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

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                                          Cisco Designing Cisco Enterprise Networks Sample Questions (Q212-Q217):

                                          NEW QUESTION # 212
                                          Drag and drop the elements from the left onto the functions they perform in the Cisco SD-WAN architecture on the right.

                                          Answer:

                                          Explanation:

                                          Explanation:
                                          Table Description automatically generated


                                          NEW QUESTION # 213
                                          Refer to the exhibit.

                                          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: B


                                          NEW QUESTION # 214
                                          An engineer is designing a network for a customer running a wireless network with a common VLAN for all APs. The customer is experiencing unicast flooding in the Layer 2 network between the aggregation and access layers. The customer wants to reduce the flooding and improve convergence time. Which solution meets these requirements?

                                          Answer: B

                                          Explanation:
                                          Because the wireless access points must remain in a common VLAN, the practical design is to align the HSRP active gateway with the spanning-tree root bridge for that VLAN. Unicast flooding commonly occurs when a Layer 2 domain is stretched between aggregation and access layers and the traffic path becomes asymmetric. If the HSRP active gateway is on one aggregation switch while STP forwards the Layer 2 path through a different aggregation switch, return traffic can be forced across inter-switch links and CAM table aging can create flooding conditions. Cisco campus design guidance emphasizes aligning Layer 2 and Layer 3 forwarding roles so the active default gateway and spanning-tree root are colocated for each VLAN.
                                          Migrating to routed access is usually the best long-term design, but it requires the APs to run on separate VLANs; the question states they use a common VLAN. Reducing ARP timers to match CAM timers can help some flooding cases, but it is not the core design fix offered here. Reference topics: HSRP and STP alignment, unicast flooding, Layer 2 campus design, wireless AP VLAN design.


                                          NEW QUESTION # 215
                                          Drag and drop the components in a Cisco SD-Access architecture from the left onto their descriptions on the right.

                                          Answer:

                                          Explanation:


                                          NEW QUESTION # 216

                                          Refer to the exhibit. An architect must design a solution to connect the two ASs. To optimize bandwidth, the design will implement load sharing between router R6 and router R4. Which solution should the design include?

                                          Answer: A

                                          Explanation:
                                          The BGP maximum-paths feature should be included when the design goal is to install multiple eligible BGP paths in the routing table and use them for load sharing. By default, BGP selects a single best path after comparing attributes such as weight, local preference, AS path, origin, MED, eBGP over iBGP, IGP metric to next hop, and other tie breakers. If two links between autonomous systems should both carry traffic, the router must be allowed to retain more than one equal or eligible path for forwarding. The maximum-paths command enables BGP multipath installation so the data plane can load share across the available links. Update-source is used to source a BGP session from a loopback or specific interface, not to perform load sharing. Next-hop- self influences recursive reachability and next-hop handling but does not install multiple paths by itself. eBGP multihop changes TTL behavior for non-directly connected eBGP neighbors and is unrelated to load sharing over the two links. Reference topics: BGP multipath, maximum-paths, eBGP load sharing, BGP path selection, route installation.


                                          NEW QUESTION # 217
                                          ......

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