Cisco 300-420 Exam Dumps, Practice Test Questions

That option concerns a separate design case: Two access switches uplink to a distribution pair; the architecture stretches one port channel across chassis without verifying multi-chassis support. The relevant control here is: Trust only legitimate DHCP server/uplink paths and keep edge client ports untrusted.

That option concerns a separate design case: A remote campus uses two distribution switches and requires nonstop gateway access during a planned supervisor replacement. The relevant control here is: Trust only legitimate DHCP server/uplink paths and keep edge client ports untrusted.

That option concerns a separate design case: An access switch's BPDU Guard disables a legitimate downstream bridge, and the network team proposes disabling Guard on every port. The relevant control here is: Trust only legitimate DHCP server/uplink paths and keep edge client ports untrusted.

That option concerns a separate design case: A company wants to expose IPv6 resources to a partner with IPv4-only routing and assumes dual stack at headquarters solves the partner boundary. The relevant control here is: Deploy tested dual stack where both address families, DNS, routing and access controls are supported end to end.

That option concerns a separate design case: A new IPv6-only client subnet must access a legacy IPv4-only web endpoint through an enterprise gateway. The relevant control here is: Deploy tested dual stack where both address families, DNS, routing and access controls are supported end to end.

That option concerns a separate design case: A branch enables IPv6 DNS records before adding IPv6 firewall rules and users bypass legacy IPv4 access controls. The relevant control here is: Deploy tested dual stack where both address families, DNS, routing and access controls are supported end to end.

That option concerns a separate design case: A fleet telemetry design streams all available operational leaves every second over a constrained management link. The relevant control here is: Use supported NETCONF locks, edit-config validation and controlled commit workflow to serialize sensitive changes.

That option concerns a separate design case: A routing telemetry client assumes every operational counter supports on-change updates and receives no updates on one platform. The relevant control here is: Use supported NETCONF locks, edit-config validation and controlled commit workflow to serialize sensitive changes.

That option concerns a separate design case: An organization hosts workloads in its owned private cloud and bursts selected approved applications to a public cloud while declaring this exclusively private deployment. The relevant control here is: Use supported NETCONF locks, edit-config validation and controlled commit workflow to serialize sensitive changes.

That option concerns a separate design case: GET VPN group members can route between branches but new devices cannot obtain group security policy after a key-server loss. The relevant control here is: Select supported WAN edge platforms and onboard them with correctly separated transport and service VPNs.

That option concerns a separate design case: A customer needs private route separation for 12 branches over a shared provider backbone, not a single Ethernet broadcast domain. The relevant control here is: Select supported WAN edge platforms and onboard them with correctly separated transport and service VPNs.

That option concerns a separate design case: A network wants a hub-and-spoke topology for finance traffic but allows any-to-any policy for all service VPNs. The relevant control here is: Select supported WAN edge platforms and onboard them with correctly separated transport and service VPNs.

That option concerns a separate design case: A provider's remote OOB management path is only 2 Mbps, while the network team sends continuous uncompressed telemetry streams at 5 Mbps. The relevant control here is: Distinguish RP-rooted shared trees from source-specific shortest-path trees and design switch behavior accordingly.

That option concerns a separate design case: A many-to-many trading network has multiple multicast senders and a scalable shared-tree forwarding requirement. The relevant control here is: Distinguish RP-rooted shared trees from source-specific shortest-path trees and design switch behavior accordingly.

That option concerns a separate design case: A source sends multicast through one router but users join from another site and no multicast routing is configured between them. The relevant control here is: Distinguish RP-rooted shared trees from source-specific shortest-path trees and design switch behavior accordingly.

That option concerns a separate design case: A campus border is configured with two equal-cost external BGP paths but only one is installed for traffic forwarding. The relevant control here is: Evaluate an appropriately designed BGP confederation with documented member-AS and external peer behavior.

This alternative is aimed at a different design constraint: A provider delegation contains 2001:db8:4200::/48 and the design requires 256 independent /64 LANs across 16 branches. The relevant control for this case is: Evaluate an appropriately designed BGP confederation with documented member-AS and external peer behavior.

That option concerns a separate design case: A network with 80 iBGP routers becomes difficult to operate because every router forms a full mesh of peer sessions. The relevant control here is: Evaluate an appropriately designed BGP confederation with documented member-AS and external peer behavior.

That option concerns a separate design case: A guest workstation port can learn hundreds of source MAC addresses because an unmanaged mini-switch is connected behind it. The relevant control here is: Use BPDU Guard on approved edge ports and root-protection policy where appropriate for uplinks.

That option concerns a separate design case: Users roam between wired fabric edge switches but their identity assignments change with switch port, breaking microsegmentation. The relevant control here is: Use BPDU Guard on approved edge ports and root-protection policy where appropriate for uplinks.

That option concerns a separate design case: IP phones and cameras are scheduled for a new closet, but PoE budget is calculated only from the switch's total port count. The relevant control here is: Use BPDU Guard on approved edge ports and root-protection policy where appropriate for uplinks.

That option concerns a separate design case: A campus designs priority queues only on the access switch but ignores a congested upstream WAN edge. The relevant control here is: Segment management-plane access by role/tenant and enforce ACLs and authentication at the boundaries.

That option concerns a separate design case: A guest wireless SSID creates burst traffic exceeding its contracted share and disrupts campus applications. The relevant control here is: Segment management-plane access by role/tenant and enforce ACLs and authentication at the boundaries.

That option concerns a separate design case: A low-bandwidth remote management VPN carries huge nightly backup transfers that prevent emergency SSH access. The relevant control here is: Segment management-plane access by role/tenant and enforce ACLs and authentication at the boundaries.

That option concerns a separate design case: A network team manually builds static IPsec tunnels between every SD-WAN edge even though centralized overlay policy is available. The relevant control here is: Plan underlay/overlay MTU and MSS handling for encapsulation overhead across the WAN path.

That option concerns a separate design case: Two site-to-site IPsec gateways show phase-one success but application traffic fails because their protected-subnet selectors differ. The relevant control here is: Plan underlay/overlay MTU and MSS handling for encapsulation overhead across the WAN path.

That option concerns a separate design case: An organization needs any-to-any group-encrypted private WAN traffic but the new design proposes a traditional hub-and-spoke IPsec overlay with hub hairpins. The relevant control here is: Plan underlay/overlay MTU and MSS handling for encapsulation overhead across the WAN path.

That option concerns a separate design case: A large enterprise wants to contain detailed IS-IS prefixes within buildings while preserving intercampus reachability. The relevant control here is: Preserve separate VRFs and apply a scoped, documented translation or renumbering design at the interconnect boundary.

That option concerns a separate design case: An iBGP route reflector sees several candidate routes to the same destination but advertises only its best path to clients. The relevant control here is: Preserve separate VRFs and apply a scoped, documented translation or renumbering design at the interconnect boundary.

That option concerns a separate design case: Two OSPF neighbors on a routed core link are stuck in EXSTART/EXCHANGE and one endpoint uses an incompatible MTU. The relevant control here is: Preserve separate VRFs and apply a scoped, documented translation or renumbering design at the interconnect boundary.

That option concerns a separate design case: A campus design requires both distribution uplinks active but the chosen topology uses classic STP on all Layer 2 connections. The relevant control here is: Select supported redundancy mechanisms that separately address link failure and control-plane maintenance transitions.

That option concerns a separate design case: A remote campus uses two distribution switches and requires nonstop gateway access during a planned supervisor replacement. The relevant control here is: Select supported redundancy mechanisms that separately address link failure and control-plane maintenance transitions.

That option concerns a separate design case: A public safety campus requires independent operations from a corporate tenant even when both use the same distribution hardware. The relevant control here is: Select supported redundancy mechanisms that separately address link failure and control-plane maintenance transitions.