Cisco 300-420 Designing Cisco Enterprise Networks (ENSLD) Exam Practice Test

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.

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?

A company requested that an architect propose a new IPv4 and IPv6 deployment strategy. The company wants a solution that is straightforward, with no information hiding or forwarding overhead. Which solution meets these requirements?

Which integration capability does gRPC provide?

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

An engineer must design a large Layer 2 domain that contains hundreds of switches and VLANs. The engineer's primary goals are to:

•Efficiently utilize the bandwidth of all links

•Avoid Layer 2 loops

•Cause minimal impact on switch CPU and memory

Which technology should the engineer include in the design?

Drag and drop the elements from the left onto the functions they perform in the Cisco SD-WAN architecture on the right.

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

Refer to the exhibit.

A customer is running HSRP on the core routers. Over time the company has grown and requires more

network capacity. In the current environment, some of the downstream interfaces are almost fully utilized, but

others are not. Which solution improves the situation?

Which two steps can be taken to improve convergence in an OSPF network? (Choose two.)

What is the purpose of a TLOC extension in a Cisco SD-WAN network fabric?

What is the function of the multicast Reverse Path Forwarding check?

An engineer is designing an EIGRP network for a small branch site where there is only one Layer 3 router. The engineer wants the router to advertise the local LAN network to remote EIGRP neighbors without sending any unnecessary multicast messages on the local LAN. Which action should the engineer take?

A customer’s environment includes hosts that support IPv6-only. Several of these hosts must communicate with a public web server that has only IPv4 domain name resolution. Which solution should the customer use in this environment?

An engineer working for a service provider with an employee ID 4598.48.606 prepared several designs for a traditional campus network. The design must allow the deployment on the same VXLAN to any switch at the access layer and must support:

Fast convergence

High availability

Resilience

Which design must be selected?

Which two functions is the Cisco SD-Access Edge Node responsible for? (Choose two.)

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

An engineer is designing a WAN solution for a customer with teams in different branch locations that need to communicate The teams also need to access enterprise applications hosted in the data center and the cloud The customer also must provide guests with connectivity to the internet only, and the internet gateway is located in the data center Which solution must the engineer choose?

A company wants to switch from static routing to a dynamic routing protocol to ease the administrative and operational overhead. The network topology is hub and spoke, and the branches use DMVPN back to the hub using two 100 Mbps internet connections. Both links must be used due to spikes in traffic, and routing must take traffic utilization of the links into account. Also, the branch routers have limited memory and CPU resources. Which routing protocol and design solution must the company choose?

When a first hop redundancy solution is designed, which protocol ensures that load balancing occurs over multiple routers using a single virtual IP address and multiple virtual MAC addresses?

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

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.)

Refer to the exhibit.

C0FD9 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?

A company wants to switch from static routing to a dynamic routing protocol to ease the administrative and operational overhead. The network topology is hub and spoke, and the branches use DM VPN back to the hub with two 10-Mbps internet connections. The branch routers are multivendor and have limited memory and CPU resources. Which routing protocol and design solution meets the requirements?

An engineer is designing a QoS solution for a campus. The design must guarantee real-time traffic delivery during congestion, minimize the bandwidth consumption for possible virus or worm attacks, and reduce flooding of excessive traffic during times of congestion. Which two solutions must the engineer select? (Choose two.)

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

Refer to the exhibit. A customer experienced an unexpected network outage when the link between R1 and R2 went down. An architect must design a solution to ensure network continuity in the event the link fails again. Which solution should the design include?

Refer to the exhibit. AS65533 and AS65530 are announcing a partial Internet routing table as well as their IP subnets. An architect must create a design that ensures AS64512 become a transit AS. Which filtering solution must the architect choose?

An engineer is designing a campus network with Cisco Catalyst 95CO switches in the aggression layer. The design requires running nonblocking Layer 2 MEC from the aggregation layer to the access layer. The Catalyst switches are located on different campus floors for availability reasons, and each access switch veil contam a single VLAN. Which technology must the engineer choose for the aggregation switches in the design?

Refer to the exhibit. The distribution switches serve as the layer 3 boundary. HSRP preemption is enabled. When the primary switch comes back after a failure, traffic is initially dropped. Which solution must be implemented to improve the design?

An engineer is designing an enterprise campus network. The LAN infrastructure consists of switches from multiple vendors, and Spanning Tree must be used as a Layer 2 loop prevention mechanism. All configured

VLANs must be grouped in two SIP instances. Which standards-based Spanning Tree technology supports this design solution?

Which common issue causes intermittent DMVPN tunnel flaps?

What is the purpose of Cisco vBond as a Session Traversal Utilities for NAT server?

An architect is designing a network for an enterprise site. The design must use an active/backup design for the WAN. It must guarantee the SLA for several applications regardless of which connection is used. Which deployment model should the architect choose?

An engineer uses Postman and YANG to configure a router with:

OSPF process ID 200

network 172.16.10.128/26 enabled for Area 0

Which get-config reply verifies that the model set was designed correctly?

Drag and drop the descriptions from the left onto the Cisco SD-WAN component they describe on the right.

Refer to the exhibit. An engineer proposed this solution for a company that requires a loop-free. Layer 2 network design. The network will run 802.1W, and all links will be 1 Gbps. If all interfaces are up as point- to-point adjacencies, what are the expected port end states based on the design?

Which element in a Cisco SD-WAN architecture maintains a centralized routing table?

What is the purpose of a border node in a Cisco SD-Access fabric?

Which two functions are provided by the Cisco SD-WAN orchestration plane? (Choose two.)

Refer to the exhibit.

An engineer must design a WAN solution so that ISP-1 is always preferred over ISP-2. The path via ISP-2 is

considered as a backup and must be used only when the path to ISP-1 is down. Which

solution must the engineer choose?

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

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

An engineer is designing a QoS solution for a customer The customer's internet connection has a bandwidth of 10 Mbps. The design must ensure that traffic bursts of data do not exceed the bandwidth of the connection and that received traffic does not starve out business-critical traffic Which solution must the engineer choose?

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

Which type of rendezvous point deployment is standards-based and support dynamic RP discovery?

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?

In a multicast network, which condition must be met for an RPF check to be performed on the RP address'?

Currently, inter-VRF routing between the global routing table and VRF-A is accomplished on the client firewall, but the customer wants to do this on the core network layer. The customer does not want to run BGP, VRF-Lite: or static routing Which mechanism meets the requirements?

A customer plans to adopt distributed QoS in their enterprise WAN. The policy must allow for individual packet marking according to the type of treatment required and for forwarding based on hop-by-hop treatment locally defined on each device. Which technology must the customer select?

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.)

Which function are fabric intermediate nodes responsible for in an SD-Access Architecture?

A customer plans to deploy WoL in the enterprise with these high-level design requirements:

Which two solutions must the customer select to have a successful deployment? (Choose two.) 3 A. IP directed broadcast and forward-protocol must be enabled on all the SVI or routed interlaces where the client subnets reside.

B. IP helper-addresses for the client ranges must be enabled on the SVI or routed interface where the WoL server subnet resides.

C. IP helper-addresses for the client ranges must be disabled on the SVI or routed interface where the WoL server subnet resides

D. IP helper-addresses for the WoL server must be enabled on the SVI or routed interface where the client subnets reside

E. IP directed broadcast and forward-protocol must be disabled on all the SVI or routed interfaces where the client subnets reside.

Which two statements about VRRP advertisements are true? (Choose two.)

An engineer must design a routing solution for a company that is single-homed to an ISP. The company's goal is to run BGP between the CE and the PE devices. To support running BGP, the company obtained a public AS number and IP subnet from ARIN. Which solution must the engineer select?

Drag and drop the characteristics from the left onto the correct telemetry mode on the right.

A company has many spoke sites with two data centers. The company wants to exchange the routing information between the data centers and the spoke sites using EIGRP. All locations belong to a single AS. and auto-summarization Is disabled. Which two actions must the company choose? (Choose two.)

What is a feature of the SaaS subscription model?

Which two BGP features will result in successful route exchanges between eBGP neighbors sharing the same

AS number? (Choose two.)

Which queuing structure is used on SD-WAN Edge routers?

Refer to the exhibits. An engineer is troubleshooting an issue in which the Gig0/2 interface on a Cisco switch named SW2 fails to become the root port. Which two commands must be run on SW2 to resolve this issue? (Choose two.)

A)

B)

C)

D)

E)

What is the main purpose of the Cisco SD-Access underlay design?

Refer to the exhibit. An engineer must connect the IPv6 island to the IPv4-only network to provide IPv6 hosts access to file servers and DNS services in the IPv4 network. Which NAT should the engineer choose?

An engineer is looking for a standards-driven YANG model to manage a multivendor network environment. Which model must the engineer choose?

Which feature is required for graceful restart to recover from a processor failure?

Refer to the exhibit. Area 10 is a regular OSPF area and networks 10.1.1.0/24 and 172.16.1.0/24 are internal. Which design provides optimal routing between both networks when the link between routers C and E fails?

Drag and drop the types of WAN connectivity from the left onto the connectivity use cases on the right.

A client is moving to Model-Driven Telemetry and requires periodic updates. What must the network architect consider with this design?

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

A customer has several remote sites connected with their headquarters through microwave links. An engineer must propose a backup WAN solution based on these conditions:

Which backup WAN link type the engineer recommend?

Drag and drop the descriptions from the left onto the corresponding VPN types on the rights.

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 establish a direct connection between two remote offices. The new connection must be established using a logical path, share a common broadcast domain, connect over private WAN, and have as little overhead as possible. Which technology must the engineer choose?

An engineer must design a management network for a customer's enterprise network. The design must:

provide the ability to grant and revoke access privileges

allow only protocols SSH, NTP, FTP, and SNMP

restrict access to management Interfaces

Which solution must the engineer choose to meet the requirements?

An architect must address sustained congestion on the access and distribution uplink of network. QoS has already been implemented and optimized, but it is no longer effective in ensuring optimal network performance. Which two solutions should the architect use to improver network performance? (Choose two)

Refer to the exhibit. An architect must design a resilient gateway solution based on these requirements:

VLAN 10 and VLAN 11 support voice and video applications.

Link and node failures must have minimal impact on traffic.

Provide protection against false hello packets.

Support IPv6.

Which solution must the architect choose?

Which two overlay network design considerations must be made for a Cisco SD-Access network? (Choose two.)

Refer to the exhibit. An architect must design a solution to connect the two ASs. To optimize bandwidth, the design will implement load sharing between router R6 and router R4. Which solution should the design include?

When IPsec VPNs are designed, what is a unique requirement if support for IP Multicast is required?

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. Where must an architect plan for route summarization for the topology?

What is a challenge of the SaaS model?

Which feature minimizes HOC connections and reduces strain on the vSmart controller m an SO-WAN architecture?

An engineer must design a QoS solution for a customer. The network currently supports data only, but the

customer will roll out VoIP and IP video in conjunction with the new QoS solution. The engineer plans to use

DiffServ. To ensure priority for voice services, which model must the design include?

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

Refer to the exhibit. Customers report low video quality and delays when having point-to-point telepresence video calls between the two locations. An architect must optimize a design so that traffic follows the same path for egress and ingress traffic flows. Which technique optimizes the design?

Refer to the exhibit. An architect must design an OSPF solution for an enterprise customer. The design must meet these requirements:

·Limit the link flap impact to Area-1 and Area-2.

·Any link failure must have minimal impact on voice and video traffic.

·Which two OSPF solutions must the architect include in the design? (Choose two.)

Which protocol is deployed through LAN automation to build node-to-node underlay adjacencies in SDA?

What is the purpose of the fabric management plane in a Cisco SD-Access architecture?

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?

An engineer must use YANG with an XML representation to configure a Cisco IOS XE switch with these specifications:

IP address 10.10.10.10/27 configured on the interface GigabitEthernet2/1/0

connectivity from a directly connected host 10.10.10.1/27

Which YANG data model set must the engineer choose?

What is an advantage of designing an out-of-band network management solution?

An enterprise needs to enhance its WAN availability after a recent outage with its only MPLS provider. The proposed solution must have a quick deployment, be affordable, be reliable, and work as a backup for the enterprise's primary MPLS connection. Which solution meets these requirements?

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

Refer to the exhibit. An architect is designing a network that requires route redistribution. The design must prevent route feedback and the creation of routing loops. The OSPF domain is using default metrics, and the IS-IS domain is using narrow metrics. Which solution must the architect select?

Refer to the exhibit. An architect must ensure a convergence time of 200 ms or less during a link failure within area 0. In addition, the solution must not impact the overall performance of the network. Which solution must the architect select?

Refer to the exhibit.

An architect must design an IPv6 migration solution for an enterprise customer to support these requirements:

* Clients will transition to the new IPv6 network, which provides NAT64 and IPv6 DNS resolution services, using the same DNS name that points to the IPv4 address.

* The service provider will create a client-facing IPv6 interface with a new IPv6 virtual address that points to the same IPv4 DNS server.

* The service provider will support clients that use global IPv6 addresses and encapsulate IPv4 packets into IPv6 tunnels.

Which two migration solutions must the architect choose? (Choose two.)

Refer to the exhibit. An engineer is planning an IPv4 to IPv6 migration solution for a customer. The routers in the network can support IPv4 and IPv6, except for the DWDM routers. The DWDM routers provide a Layer 2 link in which the routers peer directly with each other across a DWDM circuit. The circuit also provides connectivity between the mail servers. Which IPv6 migration technique must the engineer deploy?

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?

An engineer must design an addressing plan for a small business using a single /24 network. Each department must have its own subnet. Drag and drop the subnets from the left onto the departments requirements that they fulfill on the right. Not all options are used.