300-420 Practice Exam Questions and Answers

Refer to the exhibit.

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A network engineer is designing a network for AS100. The design should ensure that all traffic enters AS100

via link 1 unless there is a network failure. In the event of a failure, link 2 should function as the path for

incoming traffic. Which solution should the design include?

An engineer is designing a multicast network for a company specializing in VoD content. Receivers are across the Internet, and for performance reasons, the multicast framework close to the receivers within each AS. For high availability, if the sources in one AS are no longer available, the receivers of that AS must be able to receive the VoD content from sources in another AS. Which feature must the design include?

Exhibit:

Refer to the exhibit. An engineer is designing a Layer 2 campus network. The design must support fast convergence and leverage as much bandwidth as possible between layers. Distribution switches do support VSS; unfortunately, not all routing protocols are available for use due to license limitations. Which solution must the engineer choose?

In a Cisco SD-Access fabric, which node facilities connectivity between the fabric and networks external to the fabric?

Drag and drop the elements from the left onto the YANG models where they and used on the right.

A network solution is being designed for a company that connects to multiple Internet service providers. Which Cisco proprietary BGP path attribute will influence outbound traffic flow?

Which control-plane technology allows the same subnet to exist across multiple network locations?

Drag and drop the characteristics from the left onto the configuration protocols they describe on the right.

Refer to the exhibit. An architect is designing a hierarchical ISIS solution for a customer with these requirements:

• Routers will double In all areas within the next 24 months.
• Link flaps within areas 20 and 30 must not impact the backbone area.
• Traffic originating from A201 and A302 routers must connect to application servers in the backbone.

Which design must the architect select?

What is the role of a control-plane node in a Cisco SD-Access architecture?

Refer to the exhibit. The full EIGRP routing table is advertised throughout the network. Currently, users experience data loss when any one link in the network fails. An architect optimizes thenetwork to reduce the impact when a link fails. Which solution should the architect include in the design?

An engineer must connect a new remote site to an existing OSPF network. The new site consists of two low-end routers, one for WAN, and one for LAN. There is no demand for traffic to pass through this area. Which area type does the engineer choose to provide minimal router resources utilization, while still allowing for full connectivity to the rest of the network?

What is one function of the vSmart controller in an SD-WAN deployment?

An existing network solution is using BFD in echo mode. Several of the network devices are experiencing high CPU utilization which an engineer has determined is related to the BFD feature. Which solution should the engineer leverage to reduce the CPU load?

At which layer does Cisco Express Forwarding use adjacency tables to populate addressing information?

Refer to the exhibit. An engineer is designing a BGP solution for a client that peers with ISP1 for full Internet connectivity and with ISP2 for direct exchange of routes for several third parties. Which action, when implemented on the edge routers, enables the client network to reach the Internet through ISP1?

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?

Drag and drop the characteristics from the left onto the YANG modules they describe on the right. Not all options are used.

A network engineer must connect two sites across a public network using a secure tunneling technology that

supports multicast traffic. Which technology must be chosen?

Which OSPF area blocks LSA Type 3, 4 and 5, but allows a default summary route?

When designing interdomain multicast, which two protocols are deployed to achieve communication between multicast sources and receivers? (Choose two.)

Which two options can you use to configure an EIGRP stub router? (Choose two)

Which feature must be incorporated into the campus LAN design to enable Wake on LAN?

Which component is part of the Cisco SD-Access overlay architecture?

An engineer is creating a design to enable IPv6 to run on an existing IPv4 IS-IS network. The IPv4 and IPv6 topologies will match exactly, and the engineer plans to use the same router levels for each protocol per interface. Which IS-IS design is required?

Which WAN connectivity technology is optimal for edge computing compared to others and why?

Refer to the exhibit.

Which solution decreases the EIGRP convergence time?

In a cisco SD-Access brownfield deployment scenario, which configuration deployment must be taken with Cisco DNA center?

Which node performs the LISP Map-Server and Map-Resolver functions in the Cisco SD-Access network architecture?

A company plans to transition to IPv6. They will link their IPv4 addresses to the lowest significant bits of the new Ipv6 addresses. A network administrator with an employee id: 4264:42:116 is preparing a mapping schema for the new IPv6 addresses. Which address does the 172.16.10.0/24 network translate to?

An engineer must design an in-band management solution for a customer with branch sites. The solution must allow remote management of the branch sites using management protocols over an MPLS WAN. Queueing is implemented at the remote sites using these classes:

How must the solution prioritize the management traffic over the WAN?

Drag and drop the characteristics from the left onto the telemetry mode they apply to on the right.

Which two best practices must be followed when designing an out-of-band management network? (Choose two.)