Download Latest CCNP Enterprise 300-420 ENSLD Dumps Questions

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1. An organization is designing a detailed QoS plan that limits bandwidth to specific rates .

Which two parameters are supported be the traffic policing feature? (Choose two.)

violating

marking

shaping

bursting

conforming

2. How is internet access provided to a WAN edge router that is connected to a MPLS transport link?

OMP advertises a default route from a WAN Edge router that is connected to the MPLS and internet transport networks

Internet access must be provided at the WAN Edge router through either a 4G/5G link or local Internet circuit

An extranet must be provided in the MPLS transport network to allow private traffic to reach the public internet

TLOC extensions are used to route traffic to a WAN Edge router that is connected to the Internet transport network

3. How is sub-second failure of a transport link detected in a Cisco SD-WAN network?

Hellos are sent between the WAN Edge routers and the vSmart controller.

BFD runs on the IPsec tunnels between WAN Edge routers.

BGP is used between WAN Edge routers and the vSmart controller.

Link state change messages are sent between vSmart controllers.

4. DRAG DROP

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

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

centralized provisioning

primary authentication point

NAT traversal facilitation

Zero Touch Provisioning

troubleshooting and monitoring

6. 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?

Move the link between routers C and D to area 10.

Create an OSPF virtual link between routers E and

Create a tunnel between routers E and F in area 10.

Make area 10 a not-so-stubby area.

7. When vEdge router redundancy is designed, which FHRP is supported?

HSRP

OMP

GLBP

VRRP

8. 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?

Configure route leaking on the router in area 2.

Configure route leaking on the router in area 1.

Configure the high metric on the router in area 4.

Configure route filter on the router in area 4.

9. Which nonproprietary mechanism can be used to automate rendezvous point distribution in a large PIM domain?

Embedded RP

BSR

Auto-RP

Static RP

10. An engineer is upgrading a company’s main site to include a connection to a second ISP. The company will receive full Internet routing tables from both ISPs via BGP. The engineer must ensure that the company does not become a transit autonomous system .

Which solution should be included in this design?

Tag incoming routes from both ISPs with BGP community no-export.

Lower the MED for updates sent to the secondary IS

Use a route-map to prevent all prefixes from being advertised to either IS

Modify the local-preference for routes incoming from the primary IS

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11. 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?

LTE

802.16 WiMAX

Laser link

802.15.1 Bluetooth

12. 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?

Enable IS-IS remote LFA FRR on both devices.

Enable NSR on the switch.

Enable NSF on the switch.

Configure ISIS aggressive timers on both devices.

13. 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.)

Implement Rapid PVST+ instead of ST

Implement MST instead of ST

Use VTP to propagate VLAN information and to prune unused VLANs.

Configure broadcast and multicast storm control on all switches.

Configure dynamic trunking protocol to propagate VLAN information.

14. DRAG DROP

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

15. A company's security policy requires that all connections between sites be encrypted in a manner that does not require maintenance of permanent tunnels. The sites are connected through a private MPLS-based service that uses a dynamically changing key and spoke-to-spoke communication .

Which type of transport encryption must be used in this environment?

GETVPN

DMVPN

GRE VPN

standard IPsec VPN

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

Cisco Application Policy Infrastructure Controller Enterprise Module

Cisco Network Data Platform

Cisco Identity Services Engine

Cisco TrustSec

17. 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?

Add a link between access switch A and access switch B

Reconfigure the distribution switch A to become the HSRP Active

Change the link between distribution switch A and distribution switch B to be a routed link

Create an EtherChannel link between distribution switch A and distribution switch B

18. Which solution allows overlay VNs to communicate with each other in an SD-WAN Architecture?

External fusion routers can be used to map VNs to VRFs and selectively route traffic between VRFs.

GRE tunneling can be configured between fabric edges to connect one VN to another.

SGTs can be used to permit traffic from one VN to another.

Route leaking can be used on the fabric border nodes to inject routes from one VN to another.

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

summary-only

receive-only

external

summary

totally-stubby

not-so-stubby

20. A customer is discussing QoS requirements with a network consultant. The customer has specified that end-to-end path verification is a requirement .

Which QoS solution meets this requirement?

IntServ model with RSVP to support the traffic flows

DiffServ model with PHB to support the traffic flows

marking traffic at the access layer with DSCP to support the traffic flows

marking traffic at the access layer with CoS to support the traffic flows

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21. An ISP provides Layer 3 VPN service over MPLS to a customer with four branches and multiple CE routers at each branch.

To exchange the routes that are learned from the CE routers, which BGP address family should the ISP activate among the PE routers?

address-family multicast

L2VPN EVPN

VPNv4 unicast

IPv4 unicast

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

border node

spine node

leaf node

Cisco DNA Center

23. An engineer must design a solution to connect a customer to the Internet. The solution will include a Layer 3 circuit with a CIR of 50 Mbps from the service provider. The hand-off from the provider's switch to the customer's router is 1Gbps .

Which solution should the engineer include to prevent potential issues with choppy voice traffic?

Reduce the bandwidth of the connection to the router.

Implement hierarchical QoS with a parent policing policy.

Implement hierarchical QoS with a parent shaping policy.

Add a bandwidth statement to the router interface.

24. A router running ISIS is showing high CPU and bandwidth utilization. An engineer discovers that the router is configured as L1/L2 and has L1 and L2 neighbors .

Which step optimizes the design to address the issue?

Make this router a DIS for each of the interfaces

Disable the default behavior of advertising the default route on the L1/L2 router

Configure the router to be either L1 or L2

Configure each interface as either L1 or L2 circuit type

25. Which feature is used to optimize WAN bandwidth of IGMP network traffic among WAN Edge routers in the same VPN?

IGMPv2

multicast RP

multicast-replicator

multicast service routes

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

utilizing forward error correction

implementing a stateful application firewall

implementing AMP

utilizing quality of service

implementing Cisco Umbrella

27. 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 the network to reduce the impact when a link fails .

Which solution should the architect include in the design?

Run BFD on the inter links between EIGRP neighbors.

Summarize the access layer networks from each access layer switch toward the aggregation layer.

Reduce the default EIGRP hello interval and hold time.

Summarize the access layer networks from the aggregation layer toward the core layer.

28. Which two functions does the control plane node provide in a Cisco SD-Access architecture? (Choose two.)

LISP proxy ETR

host tracking database

policy mapping

map server

endpoint registration

29. DRAG DROP

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

30. DRAG DROP

Drag and drop the components in a Cisco SD-Access architecture from the left onto their descriptions on the right.

Page 4 of 5

31. An engineer is tasked with designing a dual BGP peering solution with a service provider.

The design must meet these conditions:

✑ The routers will not learn any prefix with a subnet mask greater than /24.

✑ The routers will determine the routes to include in the routing table based on the length of the mask alone.

✑ The routers will make this selection regardless of the service provider configuration.

Which solution should the engineer include in the design?

Use a route map and access list to block the desired networks, and apply the route map to BGP neighbors inbound.

Use a route map and prefix list to block the desired networks, and apply the route map to BGP neighbors outbound.

Use an IP prefix list to block the desired networks and apply the IP prefix list to BGP neighbors outbound.

Use an IP prefix list to block the desired networks and apply the IP prefix list to BGP neighbors inbound.

32. DRAG DROP

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

33. 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?

GLBP

IRDP

VRRP

HSRP

34. 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?

single topology without enabling transition feature

single topology with transition feature enabled

multi topology with transition feature enabled

multi topology without enabling transition feature

35. Refer to the exhibit.

EIGRP has been configured on all links. The spoke nodes have been configured as EIGRP stubs, and the WAN links to R3 have higher bandwidth and lower delay than the links to R4.

When a link failure occurs at the R1-R2 link, what happens to traffic on R1 that is destined for a subnet attached to R2?

R1 has no route to R2 and drops the traffic

R1 load-balances across the paths through R3 and R4 to reach R2

R1 forwards the traffic to R3, but R3 drops the traffic

R1 forwards the traffic to R3 in order to reach R2

36. Which QoS feature responds to network congestion by dropping lower priority packets?

CBWFQ

tail drop

WRED

strict priority

37. Which design element should an engineer consider when multicast is included in a Cisco SD-Access architecture?

PIM SSM must run in the underlay.

Multicast clients reside in the underlay, and the multicast source is outside the fabric or in the overlay.

Rendezvous points must be used in a PIM SSM deployment.

Multicast traffic is transported in the overlay and the EID space for wired and wireless clients.

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

It allows for a loop-free distribution tree from the source to receivers.

It serves as an Auto RP Mapping agent.

It prevents bootstrap messages from reaching all routers.

It is used to discover and announce RP-set information.

39. 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)

Reconfigure QoS based on the IntServ model

Utilize random early detection to manage queues

Implement higher-speed uplink interfaces

Bundle additional uplinks into logical EtherChannels

Configure selective packet discard to drop noncritical network traffic.

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

LISP

VXLAN

FabricPath

ISE mobility services

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

orchestrates vEdge and cEdge connectivity

responsible for the centralized control plane of the SD-WAN network

provides centralized network management and a GUI to monitor and operate the SD-WAN overlay

provides a data-plane at branch offices to pass traffic through the SD-WAN network

42. An engineer is designing a Layer 3 campus network running EIGRP between the core,

aggregation, and access layers. The access layer switches will be connected to the aggregation layer using Layer 3 copper connections. The engineer wants to improve convergence time for access layer switch failures .

Which technique must the design include?

enabling BFD for EIGRP on the access layer uplinks

reducing the EIGRP Hello / Hold timer values

EIGRP summarization from core to aggregation layer

EIGRP summarization from access to aggregation layer