300-420 Cisco Designing Cisco Enterprise Networks (ENSLD) Free Practice Exam Questions (2025 Updated)
Prepare effectively for your Cisco 300-420 Designing Cisco Enterprise Networks (ENSLD) certification with our extensive collection of free, high-quality practice questions. Each question is designed to mirror the actual exam format and objectives, complete with comprehensive answers and detailed explanations. Our materials are regularly updated for 2025, ensuring you have the most current resources to build confidence and succeed on your first attempt.
Which two statements describe source trees in a multicast environment? (Choose two.)
An engineer must design a QoS solution for a customer that is connected to an ISP over a 1Gbps link with a 100Mbps CIR. The ISP aggressively drops all traffic received over which is causing numerous TCP retransmissions. The customer is not using any RTP applications but wants to maximize bandwidth usage up to the CIR. Which QoS solution engineer choose?
A client is moving to Model-Driven Telemetry and requires periodic updates. What must the network architect consider with this design?
Drag and drop the model driven telemetry characteristics from the left onto the mode they belong to on the right.
Graphical user interface, diagram
Description automatically generated with medium confidence
Drag and drop the properties from the left onto the protocols they describe on the right.
Refer to the exhibit.
An engineer must optimize the traffic flow of the network. Which change provides a more
efficient design between the access and the distribution layer?
An engineer is designing a multicast network for a financial application Most of the multicast sources also receive multicast traffic (many-to-many deployment model). To better routing tables, the design must not use source trees. Which multicast protocol satisfies these requirements?
An engineer must design a VPN solution for a company that has multiple branches connecting to a main office. What are two advantages of using DMVPN instead of IPsec tunnels to accomplish this task? (Choose
two.)
An infrastructure team is concerned about the shared memory utilization of a device, and for this reason, they need to monitor the device state. Which solution limits impact on the device and provides the required data?
A network engineer must segregate three interconnected campus networks using IS-IS routing. A two-layer hierarchy must be used to support large routing domains and to avoid more specific routes from each campus network being advertised to other campus network routers automatically. Which two actions does the engineer take to accomplish this segregation? (Choose two.)
Which two steps can be taken to improve convergence in an OSPF network? (Choose two.)
In the SD-WAN underlay network, which WAN Edge VPN ID is defined as the transport VPN and is used to
carry control traffic?
Refer to the exhibit.
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F48C9ACDC725EA850EC2476EE1E
An architect must design a solution that uses the direct link between R1 and R2 for traffic from 10.10.10.0/24
toward network 10.10.20.0/24. Which solution should the architect include in the design?
Which method will filter routes between EIGRP neighbors within the same autonomous system?
An architect is designing a network solution for a customer The network is IPv6-only with 1000 hosts. The design must provide external access to up to 10 concurrent IPv6 hosts to allow communication with legacy IPv4 devices on an adjacent network. The customer set aside 10 IPv4 addresses to allow for one-to-one communication between hosts. Which solution must the architect select?
Which QoS feature responds to network congestion by dropping lower priority packets?
Refer to the exhibit. The connection between SW2 and SW3 is fiber and occasionally experiences unidirectional link failure. An architect must optimize the network to reduce the change of layer2 forwarding loops when the link fails. Which solution should the architect include?
A company must automate a set of complex changes aligned with DR testing in the network. These changes are specific, and the DR playbook will be adjusted in the future. The playbook has diverse routing and switching assets in scope as well as multiple vendor and hardware platforms. A developer will create a thin, web front-end microservice and integrate with an Open daylight controller to push changes to the network. Which YANG model should be used?
When expanding an existing Cisco SD-Access network, in addition to the control plane, which two device roles are needed to create an additional fabric site? (Choose two.)
A customer with an IPv4 only network topology wants to enable IPv6 connectivity while preserving the IPv4 topology services. The customer plans to migrate IPv4 services to the IPv6 topology, then decommission the IPv4 topology. Which topology supports these requirements?
