Practise exhibit-style questions that ask you to read a topology, table, command output or diagram before choosing the best answer.
Start Scenario PracticeA network engineer is configuring EIGRP on a router that connects to a service provider network. The engineer wants to advertise a default route to internal routers. The engineer configures 'ip default-network 0.0.0.0' and redistributes a static default route into EIGRP. However, internal routers are not receiving the default route. The engineer checks the EIGRP topology table and sees the default route with a metric of 1. What is the most likely reason?
Explanation: The engineer's configuration includes both 'ip default-network 0.0.0.0' (which is an IGRP command, not EIGRP) and redistribution of a static default route. The appearance of the default route in the EIGRP topology table with metric 1 indicates that redistribution occurred, but the route is not being advertised to internal routers. The most likely reason is that the static default route itself is not correctly configured. For EIGRP redistribution to succeed, the static route must point to a valid next-hop IP address using the syntax 'ip route 0.0.0.0 0.0.0.0 <next-hop>'. If the engineer used an interface instead of a next-hop, or the next-hop is unreachable, the static route may be invalid or not installed in the routing table, preventing its advertisement to EIGRP neighbors.
A network architect is designing a Cisco SD-Access fabric for a large enterprise. The fabric will use VXLAN encapsulation and a Layer 3 underlay. The architect must ensure that the fabric supports the separation of policy from topology and allows endpoints to be assigned to virtual networks. Which Cisco SD-Access component is responsible for maintaining the mapping between endpoint IP addresses and their fabric locators, and for providing the control plane that enables fabric edge nodes to resolve endpoint locations?
Explanation: In Cisco SD-Access, the control plane node hosts the LISP map-server and map-resolver functions, maintaining the endpoint-to-locator mapping database. Fabric edge nodes query this node to resolve endpoint locations. This design separates policy from topology and supports virtual network assignment. The other components either connect endpoints, handle external traffic, or forward underlay packets, but none maintain the mapping database.
A network engineer is troubleshooting why a newly added Cisco Catalyst 9300 switch is not appearing in Cisco DNA Center's topology view, even though it is reachable via SSH from the management network. The switch has been configured with the correct SNMP community string. Which protocol must be enabled on the switch for Cisco DNA Center to discover and monitor it?
Explanation: Cisco DNA Center relies on SNMP to discover and monitor network devices. Although SSH may be used for CLI-based configuration, SNMP is the protocol that provides the management data for topology and health monitoring. Without SNMP enabled and correctly configured, the switch will not be discovered, regardless of SSH reachability or correct community strings.
Refer to the exhibit. An administrator needs to ensure that traffic to 192.168.1.0/24 is forwarded via a different path than traffic to 192.168.2.0/24, even though both routes are learned via OSPF with the same metric. Which action should the administrator take?
Explanation: Adding a static route for 192.168.1.0/24 with a lower administrative distance (e.g., 1) than OSPF (default 110) forces the router to prefer the static route over the OSPF-learned route, even though the OSPF metric is the same. This allows traffic to 192.168.1.0/24 to use a different next-hop (e.g., 10.0.0.1) while traffic to 192.168.2.0/24 continues using the OSPF-learned path via 10.0.0.2, achieving the desired path differentiation without altering OSPF metrics or using complex PBR.
Refer to the exhibit. Which OSPF route type is the default route?
Explanation: The exhibit shows a default route (0.0.0.0/0) being redistributed into OSPF from another routing protocol or static route. By default, OSPF redistributes routes as External Type 2 (E2), meaning the metric does not include the internal cost to the ASBR. The route is not an NSSA type because the area is not configured as a not-so-stubby area, and it is not an inter-area route because it originates outside the OSPF domain.
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Practice all Refer to the Exhibit Practice QuestionsPractise exhibit-style questions that ask you to read a topology, table, command output or diagram before choosing the best answer. These appear throughout the 350-401 and require you to apply your knowledge, not just recall facts.
Cisco doesn't publish an exact breakdown, but scenario-based questions (especially exhibit and command-output formats) make up a significant portion of the 350-401. Practicing each scenario type ensures you're ready for any format.
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