300-515 Exam Questions
173 real 300-515 exam questions with expert-verified answers and explanations. Page 1 of 4.
- Question #1Service Provider VPN Technologies
Refer to the exhibit. The CE router has established a BGP peering with the PE router, and the CE will use the core infrastructure of the PE as a backbone carrier to support CSC. Wh...
Carrier Supporting Carrier (CSC)IGP routingPE/CE architectureService provider backbone - Question #2Layer 3 VPNs
Refer to the exhibit. Which statement describes the result of this configuration?
Route RedistributionOSPF External RoutesVRFBGP-to-OSPF - Question #3Layer 3 VPNs
You are writing the requirements for an MPLS L3VPN environment that uses MP-BGP between PE routers. In this environment, route targets and route distinguishers need to be advertise...
MPLS L3VPNMP-BGPExtended CommunitiesPE-to-PE BGP Sessions - Question #4L3VPN Services
Which is the primary function of a MPLS L3 VPN route target?
MPLS L3 VPNRoute TargetVRF Import/ExportRoute Distribution - Question #5Layer 3 VPNs
Which two statements about MPLS L3 VPN RDs are true? (Choose two.)
MPLS L3 VPNRoute DistinguisherBGPRoute Uniqueness - Question #6Layer 3 VPNs
Which statement describes the no bgp default route-target filter command?
BGP route-target filteringMPLS VPNroute-target communitiesprefix filtering - Question #7Layer 3 VPNs
Refer to the exhibit. A customer carrier running MPLS VPN wants to utilize a backbone carrier to forward traffic and exchange VPNv4 prefixes between the two customer carrier networ...
MP-iBGP sessionsMPLS VPN architectureVPNv4 routingPE peering - Question #8Multicast VPN
Refer to the exhibit. What is the effect of this configuration?
multicast routingMPLS taggingroute acceptancemVPN - Question #9Multicast VPN
Refer to the exhibit. Which statement about this command is true?
Multicast VPNPIM ConfigurationPE Router SetupmVPN - Question #10Layer 3 VPNs
Refer to the exhibit. Which statement describes the result of this BGP configuration?
BGP ConfigurationiBGP vs eBGP RelationshipsVPNv4 Address FamilyBGP Neighbors - Question #11Layer 3 VPNs
Refer to the exhibit. While provisioning a new BGP session between the PE and CE router, you issue the as-override command. Which statement describes modification of the prefix bef...
BGPAS-overrideMPLS L3VPNAS Path - Question #12Core Routing
Refer to the exhibit. A technician is troubleshooting a connectivity issue and notices that there is no IS-IS adjacency between R1 and R2. What can the technician change to bring t...
IS-IS routingAdjacency formationIS-type levelsRouting troubleshooting - Question #13Core Routing
Which BGP feature causes to replace the AS number of originating router with the AS number of the sending router?
BGPAS OverrideAS PathRouting Policy - Question #14Layer 3 VPNs
Refer to the exhibit. PE1 and PE2 are exchanging VPNv4 routes for CE1 and CE2, and PE3 contains the default route to the internet. If the three devices are operating normally, whic...
MPLS VPNMP-BGPVRFVPNv4 routes - Question #16IPv6 VPNs
Which optional information can be included with an IPv6 ping to support the troubleshooting process?
IPv6ICMP pinghostname resolutiontroubleshooting - Question #17L3VPN Services
Which two statements about implementing a separate MPLS VPN to provide customers Internet access are correct? (Choose two.)
MPLS VPNCE/PE RolesInternet Access ServiceVRF Architecture - Question #18Layer 3 VPNs
Which flavor of MPLS Layer 3 VPN has MPLS enabled on PE-CE links?
MPLS L3VPNCarrier Supporting CarrierPE-CE ArchitectureVPN Flavors - Question #19Layer 3 VPNs
In MPLS Layer 3 VPN implementations, what is used on the PE router to isolate potential overlapping routing information between different customers?
VRFMPLS L3VPNPE RouterRoute Isolation - Question #20Transport Technologies
Which utility can you use to validate an LSP in an MPLS environment?
MPLS LSP pingLSP validationMPLS verificationPath validation - Question #21Layer 3 VPNs
What is the primary function of a VRF on a router?
VRFRouting TablesNetwork SegmentationMulti-tenancy - Question #22VPN Architecture
Which two statements describe primary differences between MPLS Layer 2 and Layer 3 VPNs? (Choose two.)
MPLS Layer 2 VPNsMPLS Layer 3 VPNsAToM vs MPLS/BGPL2TPv3 vs GRE tunneling - Question #23Layer 3 VPNs
Refer to the exhibit. A network engineer has been called to configure the four PE devices in order to enable full communication among the four CE devices connected to them. While s...
route-targetsMPLS VPNBGP VPNPE configuration - Question #24Layer 3 VPNs
Refer to the exhibit. If the two devices are operating normally, which two conclusions can you draw from this configuration? (Choose two.)
PE-CE routingOSPFMPLS VPNRoute-target - Question #25L2VPN Services
Which two frames can be configured on an Ethernet flow point? (Choose two.)
Ethernet flow pointsVLAN taggingframe configurationL2VPN - Question #26L2VPN Services
In an Ethernet Virtual Circuit environment, which restriction do bridge domains have when STP is running?
Ethernet Virtual CircuitsBridge DomainsMSTPL2VPN Services - Question #27Transport Technologies
Refer to the exhibit. An engineer is implementing an MPLS P2MP TE solution. Which type of router can serve as the midpoint router and the tailend router in this P2MP TE network imp...
MPLSP2MP TERouter RolesTree Architecture - Question #28Layer 3 VPNs
In MPLS Layer 3 VPN implementations, which mechanism is used to control which routes are imported to a VRF?
Route TargetsMPLS L3VPNVRF Import ControlBGP Extended Communities - Question #29L3VPN Services
Which option is used as a loop prevention mechanism to support MPLS VPN customers with multihomed sites?
MPLS VPNSOO extended communityloop preventionmultihomed sites - Question #30L2VPN Services
When implementing VPLS on Cisco IOS XR routers, the VPLS PW neighbors can be statically defined under which configuration mode?
VPLS configurationPseudowire neighborsVFI (Virtual Forwarding Instance)IOS XR - Question #31L2VPN Services
An engineer is investigating an EVPN traffic flow issue. Which type of traffic should the engineer allow in an EVPN Tree Service in order to fix this issue?
EVPNTree ServiceBUM TrafficRoot Election - Question #32Transport Technologies
An engineer is investigating an issue. Which command should an engineer use on a Cisco IOS XE device to display the contents of the LFIB?
MPLSLFIBLabel ForwardingShow Commands - Question #33Transport Technologies
Refer to the exhibit. Which statement about this output is true?
MPLS LDPExplicit Null LabelEgress LSR BehaviorLabel Handling - Question #34Transport Technologies
An engineer is troubleshooting an ongoing network outage. Which command should he use that can display the live log files for a process or service running on a network device?
debug commandlive loggingtroubleshootingprocess monitoring - Question #35Multicast VPN
Which tool identifies the point of failure in a P2MP LSP from the ingress LSR?
P2MP LSPMPLS MulticastTracerouteDiagnostics - Question #36Service Provider VPN Technologies
In a typical service provider environment, which two tools are used to help scale PE router connectivity requirements? (Choose two.)
BGP scalabilityroute reflectorsconfederationsPE routers - Question #37Layer 3 VPNs
An ISP provides a major client MPLS VPN for managed services. The MPLS engineering team needs to use the advanced VPN feature of selective VRF import so that only specific prefixes...
MPLS VPNRoute TargetsVRF ImportSelective Import - Question #38Layer 3 VPNs
While configuring the VRF Selection feature, you get an error message after typing the below statement: Router(config)#no vrf selection source 172.16.0.0 255.255.0.0 vrf VRF1 Which...
VRF SelectionConfiguration RemovalError HandlingCLI Commands - Question #39Layer 3 VPNs
When verifying Layer 3 MPLS VPN operations, which Cisco IOS XR show command is best used to verify that the PE router is receiving the routes from the CE router?
MPLS VPNPE-CE routingVRFroute verification - Question #40L3VPN Services
When implementing Layer 3 MPLS VPNs on Cisco IOS/IOS XE PE routers, which PE-to-CE routing protocol requires a separate routing process to be created for each VRF?
MPLS VPNOSPF VRFPE-CE routingVRF - Question #41Layer 3 VPNs
Which three functions are performed by the PE router in an MPLS Layer 3 VPN? (Choose three.)
MPLS L3 VPNPE router functionsMP-BGPVPNv4 - Question #42Core Routing
Which two BGP attributes prevent loops in a route reflector environment? (Choose two.)
Route ReflectorsBGP Loop PreventionCluster IDOriginator ID - Question #43Transport Technologies
An engineer needs to improve MPLS network management by implementing a set of tools to support the NOC engineers in troubleshooting network failures. Which feature should the engin...
MPLS OAMLSP ConnectivityMPLS TroubleshootingPE Router Management - Question #44Layer 2 VPNs
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 rout...
EVPNIRB ConfigurationType 2 RoutesPE Router Commands - Question #45Layer 3 VPNs
You try to configure MPLS VPN VRF Selection based on a source IP address on an interface that has VRF configured, but you receive an error. Which action must you take to correct th...
MPLS VPNVRF SelectionSource-based routingConfiguration constraints - Question #46Layer 3 VPNs
The CTO of a company requires the support of a network consultant to deliver an MPLS solution without resigning to a certain degree of redundancy and scalability. Which solution ef...
MPLS scalabilityhierarchical topologyL3VPN designPE hierarchy - Question #47Core Routing
You are troubleshooting ARP connectivity issues for an Ethernet interface on an IOS XR network that runs IS-IS. You verify that the IGP protocol is running, but an ARP entry has no...
ARP resolutionIOS XR troubleshootingIS-IS IGPLayer 2/3 interaction - Question #48VPN Architecture
Which two are characteristics of using a non-MPLS peer-to-peer model over a traditional overlay model? (Choose two.)
peer-to-peer modeloverlay modelprovider knowledgerouting exchange - Question #49L3VPN Services
In which configuration mode is a route distinguisher configured in a Cisco IOS XR router?
Route DistinguisherBGP VRFIOS XR ConfigurationMPLS VPN - Question #50Layer 2 VPNs
Which Layer 2 VPN technology is implemented over an IP core network without the need for MPLS?
Layer 2 VPNL2TPv3MPLS-independent tunnelingVPN protocols - Question #51Layer 2 VPNs
Which two Layer 2 VPN methods support interworking between customer sites with different Layer 2 encapsulation at each end (for example, Frame Relay to Ethernet interworking)? (Cho...
L2 InterworkingAToML2TPv3Encapsulation