Cisco 300-420 Exam Dumps, Practice Test Questions

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.

That option concerns a separate design case: A WAN team assumes DWDM wavelength multiplexing itself supplies packet-level route isolation between tenants. The relevant control here is: Distinguish orchestration, management, control-plane and data-plane roles and repair the controller/OMP relationship.

That option concerns a separate design case: An enterprise's primary WAN circuit fails but BGP route withdrawal is delayed while the underlay interface remains up. The relevant control here is: Distinguish orchestration, management, control-plane and data-plane roles and repair the controller/OMP relationship.

That option concerns a separate design case: An industrial site uses 4G LTE as primary WAN, and its routing team assumes public inbound addresses remain reachable through carrier-grade NAT. The relevant control here is: Distinguish orchestration, management, control-plane and data-plane roles and repair the controller/OMP relationship.

That option concerns a separate design case: A company needs private predictable cloud connectivity to two regions but its design considers only commodity internet VPNs. The relevant control here is: Classify the combined arrangement as hybrid cloud and design controlled identity, routing, and data movement policies.

That option concerns a separate design case: A Cisco-only controller needs platform-specific wireless policies that are not represented by the organization's standard OpenConfig model. The relevant control here is: Classify the combined arrangement as hybrid cloud and design controlled identity, routing, and data movement policies.

That option concerns a separate design case: A NETCONF client edits a shared candidate configuration while another orchestrator is modifying the same device. The relevant control here is: Classify the combined arrangement as hybrid cloud and design controlled identity, routing, and data movement policies.

That option concerns a separate design case: A campus uses DSCP EF for voice signaling, voice media, and backup traffic, causing priority queue overload. The relevant control here is: Replace or complement the policer with traffic shaping when buffering and smoothing are the intended behavior.

That option concerns a separate design case: A 1-Gbps campus uplink feeds a 100-Mbps WAN access circuit and packets drop in unpredictable bursts at the provider policer. The relevant control here is: Replace or complement the policer with traffic shaping when buffering and smoothing are the intended behavior.

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: Replace or complement the policer with traffic shaping when buffering and smoothing are the intended behavior.

That option concerns a separate design case: A campus topology places critical services behind one regional core switch despite redundant uplinks elsewhere. The relevant control here is: Apply supported port-security limits and violation behavior aligned to the legitimate endpoint profile.

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: Apply supported port-security limits and violation behavior aligned to the legitimate endpoint profile.

That option concerns a separate design case: An attacker plugs an unmanaged switch into a lobby edge port and advertises superior STP BPDUs, changing the root topology. The relevant control here is: Apply supported port-security limits and violation behavior aligned to the legitimate endpoint profile.

That option concerns a separate design case: A partner BGP session accidentally advertises a sensitive 10.0.0.0/8 internal route to an external ASN. The relevant control here is: Use controlled redistribution policy with route tags and a defined protocol boundary between OSPF and IS-IS.

That option concerns a separate design case: A campus OSPF area 0 is split into disconnected islands connected only by another area; route distribution is unstable. The relevant control here is: Use controlled redistribution policy with route tags and a defined protocol boundary between OSPF and IS-IS.

That option concerns a separate design case: An OSPF deployment puts all 600 remote access switches into area 0 and floods changes to every site. The relevant control here is: Use controlled redistribution policy with route tags and a defined protocol boundary between OSPF and IS-IS.

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: Intentionally distribute primary FHRP roles across VLAN groups while preserving corresponding upstream capacity and failover policy.

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: Intentionally distribute primary FHRP roles across VLAN groups while preserving corresponding upstream capacity and failover policy.

That option concerns a separate design case: HSRP gateways remain reachable locally after their active router loses the only routed upstream uplink. The relevant control here is: Intentionally distribute primary FHRP roles across VLAN groups while preserving corresponding upstream capacity and failover policy.

That option concerns a separate design case: A remote branch uses an OSPF stub area but a design change introduces an ASBR that must redistribute external routes within it. The relevant control here is: Align supported interface MTU and OSPF adjacency parameters rather than suppressing the mismatch blindly.

That option concerns a separate design case: An IS-IS backbone suffers topology oscillation because a marginal core link repeatedly flaps. The relevant control here is: Align supported interface MTU and OSPF adjacency parameters rather than suppressing the mismatch blindly.

That option concerns a separate design case: An EIGRP core has routes stuck active after one WAN path fails and queries spread into many remote sites. The relevant control here is: Align supported interface MTU and OSPF adjacency parameters rather than suppressing the mismatch blindly.

That option concerns a separate design case: A campus uses DSCP EF for voice signaling, voice media, and backup traffic, causing priority queue overload. The relevant control here is: Standardize classification and remarking policy across all controlled network trust boundaries.

That option concerns a separate design case: Video and voice both use one strict-priority queue, causing voice jitter when video surges. The relevant control here is: Standardize classification and remarking policy across all controlled network trust boundaries.

That option concerns a separate design case: A QoS controller marks all backup data DSCP AF41 while the provider honors it as a premium video class. The relevant control here is: Standardize classification and remarking policy across all controlled network trust boundaries.

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: Align the signed device identity, organization name and controller trust requirements for supported secure onboarding.

That option concerns a separate design case: A new SD-WAN site has a single edge appliance and single underlay yet is approved as redundant because controllers run in different data centers. The relevant control here is: Align the signed device identity, organization name and controller trust requirements for supported secure onboarding.

That option concerns a separate design case: An SD-WAN fabric routes guest traffic into the production VPN because a new edge reused the corporate service VPN identifier. The relevant control here is: Align the signed device identity, organization name and controller trust requirements for supported secure onboarding.

That option concerns a separate design case: A routed-access campus needs equal-cost forwarding to two distribution routers while keeping each VLAN local to one wiring closet. The relevant control here is: Tune BFD intervals and session scale to supported hardware and realistic detection requirements.

That option concerns a separate design case: A routed campus uses DHCP snooping on access switches but marks every endpoint port trusted for convenience. The relevant control here is: Tune BFD intervals and session scale to supported hardware and realistic detection requirements.

That option concerns a separate design case: HSRP gateways remain reachable locally after their active router loses the only routed upstream uplink. The relevant control here is: Tune BFD intervals and session scale to supported hardware and realistic detection requirements.