300-515: Cisco.300-515.Pass4Success.2026-10-15.53q.vcex

Refer to the exhibit.

Which statement describes the result of this BGP configuration?

R1 operates using IPv4 and VPNv4 address families.
R1 operates on IPv6 only because the bgp default ipv4-unicast command is missing.
R1 establishes a VPNv4 eBGP relationship with neighbor 192.168.1.1.
R1 establishes an iBGP relationship with peer 192.168.1.1.

Correct answer: D

Which two frames can be configured on an Ethernet flow point? (Choose two.)

of a specific VLAN
with different type of service values
with identical type of service value
with different class of service values
with no tags

Correct answer: A, E

Explanation:

https://www.cisco.com/c/en/us/td/docs/ios-xml/ios/cether/configuration/xe-3s/asr903/16-5-1/b-ce- xe-16-5-asr900/trunk-efp-support.html

Which two are characteristics of using a non-MPLS peer-to-peer model over a traditional overlay model? (Choose two.)

Routing information is exchanged between the customer router and one or a few PEs.
The customer specifies the exact site-to-site traffic profile.
The model is suited for nonredundant configurations.
The configuration on a newly added site PE is updated automatically.
Provider routers know the customer network topology.

Correct answer: A, E

Explanation:

http://etutorials.org/Networking/MPLS+VPN+Architectures/Part+2+MPLS-based+Virtual+Private+Networks/Chapter+7.+Virtual+Private+Network+VPN+Implementation+Options/Overlay+and+Peer-to-peer+VPN+Model/Topic 2, Layer 2 VPNs

http://etutorials.org/Networking/MPLS+VPN+Architectures/Part+2+MPLS-based+Virtual+Private+Networks/Chapter+7.+Virtual+Private+Network+VPN+Implementation+Options/Overlay+and+Peer-to-peer+VPN+Model/

Topic 2, Layer 2 VPNs

Refer to the exhibit.

An organization is running H-VPLS on a network comprising four routers in a hub-and-spoke topology with R1 as the hub An engineer added a new spoke with multiple VCs to the network, and now traffic cannot flow properly How should the engineer update the configuration on R1 to correct the problem?

Disable spanning tree to allow loops to occur within the hub-and-spoke topology.
Disable split horizon to allow multiple VCs per spoke
Disable Cisco Discovery Protocol to allow MPLS to share labels between the designated spokes
Disable Cisco Discovery Protocol to allow for neighbor discovery

Correct answer: B

How does Layer 3 VPN traffic traverse an ISP network?

Devices on the network use MPLS labels to share VPN routes between P routers in the network.
Devices on the network use LSAs to share routes between P routers in the network.
Devices on the network use MPLS labels to move VPN traffic through the network.
Devices on the network use GRE tunnels to move traffic between VRFs.

Correct answer: C

Refer to the exhibit.

What is shown in this output?

local and outgoing abels are updated in hardware
BGP is used between neighbors that are exchanging MPLS labels
LDP neighbor statuses
the labels received and advertised on PE1

Correct answer: D

What is a requirement to share VRF reachability information to all members of a VPN when using IPv6?

PE and CE routers must be running BGP as the PE-CE routing protocol
PE routers must have MPLS disabled and be running MP-BGP between all P and PE routers.
PE routers must be running MP-BGP and bgp default ipv4-unicast must be disabled
All PEs must have the same VRFs configured.

Correct answer: D

An engineer noticed that PE3 is failing to accept IPv6 traffic information from PE1 The engineer confirmed that both PE3 and PE1 routers are configured accurately with IPv6 protocol To eliminate IPv6 traffic loss issue, which action must the engineer take to solve the problem?

Disable 6PVE that provides local IPv6 reachability over MPLS.
Configure 6PE that provides global IPv6 reachability over IPv4 MPLS
Allow PE routers use the MP-iBGP extensions in the IPv6 network configuration to exchange IPv6 reachability information.
Configure 6PE forwarding between 6PE routers based on the IPv6 header

Correct answer: B

Which mechanism reduces the network flooding caused by host ARP learning behavior?

ARP suppression
storm control
root guard
BPDU guard

Correct answer: A

Explanation:

https://www.cisco.com/c/en/us/products/collateral/switches/nexus-7000-series-switches/white- paper-c11-735015.html

Refer to the exhibit.

A network operator is implementing EVPN IRB on PE1. Which two command placements enable the advertisement of Type 2 routes and what information do Type 2 routes contain? (Choose two.)

The operator adds in ''host-routing'' under the VRF EVPN.
Type 2 routes contain MAC/IP information.
Type 2 routes contain Ethernet Auto-Discovery information.
The operator adds in ''host-routing'' under the BVI651 interface.
Type 2 routes contain inclusive source-specific multicast route information.

Correct answer: B, D

Explanation:

https://www.cisco.com/c/en/us/td/docs/iosxr/ncs5500/vpn/61x/b-ncs5500-l2vpn-configuration- guide-61x/b-ncs5500-l2vpn-configuration-guide-61x_chapter_01010.html