300-420 Designing Cisco Enterprise Networks (ENSLD) Questions and Answers

Since installing a cisco TelePresence system, the company is experiencing other application having response issues when the system in use. As a result, the company asked an architect to recommend a QoS solution. The customer is currently using a CBWFQ policy to manage traffic on an internet connection with a speed of 100 Mbps. Which link-capacity limit must the architect choose for strict-priority for the real-time traffic?

Which component of Cisco SD-Access integrates with Cisco DNA Center to perform policysegmentation and enforcement through the use of security group access control lists and security group tags?

What is a benefit of using VRRPv3 as compared to VRRPv2?

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?

Which design consideration must be made when dual WAN Edge routers are deployed at a branch site?

Refer to the exhibit. A network engineer is designing an OSPF solution to connect a company's remote to a newly provisioned MPLS VPN backbone. Some of the branches have a direct dark fiber connection between each other. The engineer wants to ensure that the dark fibers are used only when the MPLS core is unavailable. Which solution must the engineer choose?

An architect must develop a campus network solution that includes:

logically segmented and isolated networks

ability to communicate between network segments when required

support for overlapping IP addresses

widely available technologies to avoid purchasing specialized equipment

Which solution must the architect select?

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

An engineer must design a scalable QoS architecture that allows the separation of the traffic into classes on predefined business requirements. The design must also utilize the differentiated services code points as the QoS priority descriptor value and support at least 10 levels of classification. Which QoS technology should the engineer include in the design?

Refer to the exhibit.

An architect must design an IGP solution for an enterprise customer. The design must support:

Physical link flaps should have minimal impact.

Access routers should converge quickly after a link failure.

Which two ISIS solutions should the architect include in the design? (Choose two.)

An engineer is designing an IPv4 addressing plan for an enterprise with 1000 branches. Each branch requires a prefix for data and a prefix for voice. Each prefix must accommodate up to 128 hosts, and prefixes must facilitate summarization at aggregation points in the network. The security team requires a simple method for identifying voce prefixes. Which allocation does the engineer recommend from the RFC1918 address space?

A customer's current Layer 2 infrastructure is running Spanning Tree 802.1d, and all configuration changes are manually implemented on each switch. An architect must redesign the Layer 2 domain to achieve these goals:

• reduce the impact of topology changes
• reduce the time spent on network administration
• reduce manual configuration errors

Which two solutions should the architect include in the new design? (Choose two.)

Drag and drop the model driven telemetry characteristics from the left onto the mode they belong to on the right.

Which function does the Cisco SD-Access intermediate node perform?

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?

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?

Refer to the exhibit.

An architect is designing a network for a customer supporting a Wake-on-LAN application. Which solution must the architect choose?

A customer requests a VPN solution to connect multiple sites with the company headquarters. All the sites use the same IP subnet. The engineer plans to use VPLS. Which solutions must the engineer include in the design?

Refer to the exhibit.

An architect is designing a routing solution for a company. The new design will add a circuit routers C and D to protect against loss of connectivity to 10.0.4.0/24 during a link failure between routers B and D. Which solution must the architect choose?

An engineer is designing a QoS policy that queues excess packets for later transmission. Which mechanism must be included in the design?

Which two techniques improve the application experience in a Cisco SD-WAN design? (Choose two.)

In an SD-WAN architecture, which methods are used to bootstrap a vEdge router?

Drag and drop the steps WAN Edge performs when on-boarded into the Cisco SD-WAN overlay from the left into the order they are completed on the right.

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

A network engineer must segregate three interconnected campus networks using IS-ISrouting. 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.)

An organization plans to deploy multicast across two different autonomous systems. Their solution must allow RPs to:

•discover active sources outside their domain

•use the underlying routing information for connectivity with other RPs

•announce sources joining the group

Which solution supports these requirements?

Refer to the exhibit.

A network engineer must improve the current IS-IS environment. The Catalyst switch is equipped with dual supervisors. Each time a stateful switchover occurs, the network experiences unnecessary route recomputation. Which solution addresses this issue if the upstream router does not understand graceful restart messaging?

Refer to the exhibit.

A network engineer must design a multicast solution based on:

* Many-to-many communications between the users and sources

* Support of up to 50 multicast sources

* Users that must register for steams

Which multicast solution must the engineer select?

An engineer is working with NETCONF and Cisco NX-OS based devices. The engineer needs a YANG model that supports a specific feature relevant only to Cisco NX-OS. Which model must the engineer choose?

Refer to the exhibit. A network engineer must design a BGP solution based on:

• The route reflector must have one or more direct physical connections to the core routers (R3 and R4).
• The route reflector must have full redundancy and avoid a single point of failure.
• R2 to R1 link utilization is 90%. and the remaining links are less than 50% utilized.

Which two solutions must the design Include?(Choose two.)