Practice 350-401 Architecture questions with full explanations on every answer.
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A network engineer is designing a campus network with high availability for critical services. Which Cisco technology enables traffic to be forwarded to an alternate next hop in the event of a first-hop router failure, without requiring any configuration changes on the hosts?
2A company is deploying a wireless network in an office with high client density. Which Cisco architecture is best suited to handle client roaming without requiring a central controller for every roaming event?
3An enterprise is using OSPF in a multi-area design. Area 1 is a regular area, and Area 2 is a totally stubby area. Which LSA types are present in Area 2?
4A network engineer is troubleshooting a routing loop in an EIGRP network. Which mechanism is designed to prevent routing loops by causing a router to reject routes that are learned from a neighbor that is not the successor?
5A company is implementing QoS in a network where voice traffic must have strict priority over all other traffic. Which queuing mechanism should be used on the outbound interface of a router to ensure voice packets are always sent first?
6A network administrator is configuring a new VLAN 100 on a switch and wants to ensure that the VLAN is created and active. Which command is required to create a VLAN in the VLAN database?
7An engineer is troubleshooting a network where OSPF neighbors are stuck in the EXSTART state. What is the most likely cause?
8A company is deploying a WAN with MPLS VPN and wants to ensure that customer traffic is isolated from other customers. Which technology is used to maintain separation in the MPLS core?
9Which TWO statements are correct about Cisco SD-Access architecture? (Choose two.)
10Which THREE characteristics are true about Cisco StackWise virtual technology? (Choose three.)
11Which TWO are benefits of using a spine-leaf architecture in a data center? (Choose two.)
12A large enterprise has a campus network with a collapsed core design. The core switch connects to two distribution switches, each serving several access switches. The network uses OSPF as the IGP. Recently, after a link failure between the core and distribution switch A, the network experienced a 30-second outage before converging. The engineer wants to improve convergence time to under 5 seconds. The budget is limited, so hardware upgrades are not an option. The engineer is considering the following actions: A. Enable OSPF Fast Hello on all interfaces. B. Reduce OSPF dead timer to 1 second and hello timer to 333 milliseconds. C. Implement OSPF LSA throttling with a minimum interval of 0 ms. D. Use OSPF incremental SPF (iSPF). Which action will provide the most significant improvement in convergence time for this scenario?
13A small business has a single router connected to the internet and a switch for the LAN. They want to implement VLANs to separate guest and corporate traffic. The router has only one physical interface to the switch. The network engineer proposes using subinterfaces with 802.1Q trunking on the router interface. Which configuration step is required on the switch port connected to the router?
14A network engineer is designing a campus network and needs to ensure high availability for the core layer. Which design best practice should be implemented?
15An engineer is troubleshooting intermittent connectivity issues between two data center switches. The link is a 10GE LACP port-channel. Which misconfiguration could cause packet loss?
16A global enterprise is transitioning from a traditional three-tier campus architecture to a software-defined access (SD-Access) fabric. Which architectural consideration is most critical for the underlay network?
17A network administrator is deploying QoS in a converged network. Which approach correctly implements trust boundaries and marking?
18Which TWO of the following are benefits of implementing a spine-leaf architecture in a data center?
19Which THREE of the following are valid considerations when planning a wireless network for high-density environments?
20A mid-size enterprise is deploying a new branch office with 50 users. The branch will have its own router, switch, and wireless AP. The WAN link is a 50 Mbps MPLS circuit. The company uses VoIP and requires Quality of Service. The network administrator has configured the router with a QoS policy that marks VoIP traffic with DSCP EF and all other traffic with DSCP 0. The policy also shapes traffic to 50 Mbps. After deployment, users report that voice quality is poor during peak hours. The administrator checks the router and sees that the output queue on the WAN interface is often full and drops are occurring. Which action should the administrator take to improve voice quality?
21Drag and drop the steps to configure a static route on a Cisco IOS router into the correct order.
22Drag and drop the steps for the Spanning Tree Protocol (STP) convergence process in the correct order.
23Match each routing protocol to its administrative distance.
24Match each First Hop Redundancy Protocol (FHRP) to its description.
The Architecture domain covers the key concepts tested in this area of the 350-401 exam blueprint published by Cisco. Courseiva provides free domain-focused practice, mock exams, missed-question review, and readiness tracking across all 350-401 domains — no account required.
The Courseiva 350-401 question bank contains 24 questions in the Architecture domain, covering the 15% of the exam attributed to this domain in the official Cisco blueprint. Click any question to see the full explanation and answer breakdown.
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