2025 Valid 300-420 Real Exam Questions, practice CCNP Enterprise [Q123-Q139]

NEW QUESTION 123
Refer to the exhibit. An architect reviews the low-level design of a company’s enterprise network and advises optimizing the STP convergence time. Which functionality must be to Gi1/0/1-10 to follow the architect’s recommendation?

PortFast

root guard

UplinkFast

BPDU guard

NEW QUESTION 124
Which nonproprietary mechanism can be used to automate rendezvous point distribution in a large PIM domain?

Embedded RP

BSR

Auto-RP

Static RP

NEW QUESTION 125
An engineer is designing a BGP network for a large customer. To permit efficient scaling, the BGP domain is split into clusters. Which peering solution should be used between the route reflectors in different clusters for the BGP routes to be propagated appropriately?

The route reflectors should be made dents of each other.

The route reflectors should be nonclients with regards to each other.

The route reflectors should not have any kind of BGP peering.

The route reflectors should have peering through another nonclient router.

NEW QUESTION 126
A company requires a private WAN design that allows remote sites to connect to HQ. The design must ensure that:
– traffic is always encrypted
– forwarding overhead is reduced
– management of security is centralized
– multicast traffic is supported
Which technology must the company select?

IPsec P2P

mGRE

DMVPN Phase 3

GET VPN

NEW QUESTION 127

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.

NEW QUESTION 128
How does a model-driven telemetry dial-out approach function?

The device initiates a session to the collector based on the subscription.

The collector initiates a session to the device and subscribes to data to be streamed.

The collector initiates a session to the device and gets the data of a previously defined subscription.

The device initiates a session to the collector and negotiates a subscription.

NEW QUESTION 129
Which design consideration must be made when using IPv6 overlay tunnels?

Overlay tunnels that connect isolated IPv6 networks can be considered a final IPv6 network architecture.

Overlay tunnels should only be considered as a transition technique toward a permanent solution.

Overlay tunnels can be configured only between border devices and require only the IPv6 protocol stack.

Overlay tunneling encapsulates IPv4 packets in IPv6 packets for delivery across an IPv6 infrastructure.

NEW QUESTION 130
Refer to the exhibit. An engineer working for a telecommunication company with an employee ID:
1234:56:789 is calculating STP scalability for switches to ensure that the numbers are below the maximum supported value for STP logical ports. How many logical interfaces are active for switch A?

307

4

202

100

NEW QUESTION 131
Which NETCONF operation creates filtering that is specific to the session notifications?

<create-subscription>

NEW QUESTION 132
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?

iBGP with the hub routers set up as route reflectors and branches set up as clients

OSPF deployed in area 0 with branch routers connecting from area 1

ISIS with the hub and spoke routers configured in two different areas

EIGRP with branch routers as stub routers using ECMP

NEW QUESTION 133
An engineer is designing a campus network with Cisco Catalyst 9500 switches in the aggregation 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 will contain a single VLAN. Which technology must the engineer choose for the aggregation switches in the design?

VSS

StackWise-480

VPC

StackWise Virtual

NEW QUESTION 134
When designing interdomain multicast, which two protocols are deployed to achieve communication between multicast sources and receivers? (Choose two.)

IGMPv2

BIDIR-PIM

MP-BGP

MSDP

MLD

NEW QUESTION 135
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?

Use a single native vendor YANG model to minimize development time

Use an open YANG model to allow the reuse of code and standardize the implementation across platforms

Use multiple native vendor YANG models to provide code consistency.

Develop an individualized YANG model to minimize development resources and time to market.

NEW QUESTION 136
Which WAN connectivity technology is optimal for edge computing compared to others and why?

Due to high bandwidth, separation and security, and proximity to the data center network, DWDM is the optimal WAN technology for edge computing compared to 4G/5G connectivity, which offers native separation and security with close proximity to the data center.

Due to low latency, high bandwidth, and closest proximity to the user, 4G/5G connectivity is the optimal WAN technology for edge computing compared to L3 VPN MPLS connectivity, which offers native separation and security with close proximity to the data center.

Due to low cost, high bandwidth, low latency, and closest proximity to the edge of the network, Mero Ethernet is the optimal WAN technology for edge computing compared to MPLS, which offers native separation and security with close proximity to the data center.

Due to low latency, high bandwidth, and closest proximity to the user, L3 VPN MPLS connectivity is the optimal WAN technology for edge computing compared to 4G/5G connectivity, which offers native separation and security with close proximity to the data center.

NEW QUESTION 137
Refer to the exhibit.

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?

Increase the hello timers on both HSRP devices

Use the preempt delay feature on the primary HSRP device.

Use the preempt delay feature on the backup HSRP device

Configure a higher mac-refresh interval on both HSRP devices

NEW QUESTION 138
An engineer uses Postman and YANG to configure a router with:
* OSPF process ID 400
* network 192.168.128.128/25 enabled for Area 0
Which get-config reply verifies that the model set was designed correctly?

Text Description automatically generated

Text Description automatically generated with medium confidence

NEW QUESTION 139
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.)

Split the network into two separate ASs.

Exchange all routes between locations.

Summarize the routes between the hubs.

Make each spoke site router a stub router.

Summarize the routes from spokes to the hubs.