Practise exhibit-style questions that ask you to read a topology, table, command output or diagram before choosing the best answer.
Start Scenario PracticeRefer to the exhibit. A network engineer is troubleshooting a routing issue. The route for 10.0.0.0/8 is learned via EIGRP with metric 2560512. Which change would most likely cause the metric to increase?
Explanation: The EIGRP metric is calculated using the formula: metric = (K1 * bandwidth + (K2 * bandwidth) / (256 - load) + K3 * delay) * 256, with default K values (K1=1, K3=1, others=0). Increasing the delay on the outgoing interface (GigabitEthernet0/0) directly increases the delay component in the composite metric, causing the overall metric to increase. Option D is correct because delay is a key variable in the EIGRP metric calculation.
Refer to the exhibit. A network engineer has configured VRFs on a router. A packet arrives on Gi0/1/0 with destination IP 10.1.1.2. Which VRF is used for routing this packet?
Explanation: The packet arrives on interface Gi0/1/0, which is configured under VRF CUSTOMER-A (as shown in the exhibit with 'ip vrf forwarding CUSTOMER-A'). When a VRF is applied to an ingress interface, the router uses that VRF's routing table (not the global table) to perform the destination IP lookup. Therefore, the packet with destination 10.1.1.2 is routed using the CUSTOMER-A VRF.
Refer to the exhibit. R1 has two equal-cost OSPF E2 routes to 10.1.1.0/24 via two different next hops. However, when tracing to 10.1.1.1, all traffic uses the path through 10.0.1.2. What is the most likely reason?
Explanation: OSPF E2 routes do not include the internal cost to the ASBR; the cost shown in the routing table is the external metric only. When two E2 routes have the same external metric, Cisco IOS uses the interface cost as a tie-breaker to select the best next hop. In this scenario, the interface to 10.0.1.2 has a lower cost than the interface to 10.0.2.2, so all traffic is forwarded via 10.0.1.2.
A network administrator is troubleshooting a performance issue in a large enterprise campus network. The network consists of Cisco Catalyst 9300 switches acting as access switches and Cisco Catalyst 9500 switches as distribution. Users on VLAN 10 report intermittent slow file transfers to a server on VLAN 20. The administrator has verified that there are no errors on the links, CPU utilization is normal, and STP topology is stable. The administrator suspects a possible QoS issue. Upon checking the QoS configuration on the access switch, the administrator finds that the default QoS configuration is in place, which trusts the CoS value at the port level. The connected devices are IP phones and PCs; the IP phones mark voice traffic with CoS 5. The server on VLAN 20 is connected to a distribution switch. Which action should the administrator take to most likely resolve the issue?
Explanation: Option C is correct because Auto QoS for VoIP automatically configures the necessary class maps, policy maps, and trust settings to properly classify and queue voice traffic (CoS 5) while ensuring data traffic is not starved. The default QoS configuration trusts CoS at the port level, but without proper queuing and scheduling, voice and data may compete for buffers, causing intermittent slow file transfers. Auto QoS sets up strict priority queuing for voice and allocates bandwidth for data, resolving the performance issue without manual misconfiguration.
Refer to the exhibit. A network engineer sends a RESTCONF PATCH request with the above JSON payload to the URL https://192.168.1.100/restconf/data/ietf-interfaces:interface=GigabitEthernet0/0/0. What is the expected outcome?
Explanation: A RESTCONF PATCH request uses the HTTP PATCH method to apply a partial update to an existing resource. The payload contains only the fields to be modified (description and IP address), and the request URL targets the specific interface resource. Since the interface already exists, the PATCH updates only those fields without affecting other configuration, such as the interface's enabled state. This is why the interface remains enabled and only the description and IP address are updated.
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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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