Pass Cisco 300-515 Exam in First Attempt Guaranteed [Mar-2023]
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NEW QUESTION 50
Which three functions are performed by the PE router in an MPLS Layer 3 VPN? (Choose three.)
- A. exchanges VPN labels with the CE routers
- B. exchanges VPNv4 routes with other PE routers over MP-BGP
- C. exchanges routing updates with the CE router
- D. imports and exports RTs that are received from the P routers
- E. translates the CE routing information into VPNv4 routes
- F. exchanges RDs with the P routers
Answer: B,C,E
NEW QUESTION 51
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.)
- A. Type 2 routes contain inclusive source-specific multicast route information.
- B. The operator adds in "host-routing" under the VRF EVPN.
- C. Type 2 routes contain Ethernet Auto-Discovery information.
- D. Type 2 routes contain MAC/IP information.
- E. The operator adds in "host-routing" under the BVI651 interface.
Answer: D,E
Explanation:
Reference: 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
NEW QUESTION 52
Which two frames can be configured on an Ethernet flow point? (Choose two.)
- A. with different class of service values
- B. with different type of service values
- C. with identical type of service value
- D. of a specific VLAN
- E. with no tags
Answer: D,E
Explanation:
Reference: 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
NEW QUESTION 53
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?
- A. known unicast from a root to another root
- B. multicast from a leaf to another leaf
- C. unknown unicast from a leaf to another leaf
- D. known unicast from a leaf to another leaf
Answer: A
Explanation:
Reference: https://tools.ietf.org/html/draft-ietf-bess-evpn-etree-14
NEW QUESTION 54
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?
- A. Disable 6PVE that provides local IPv6 reachability over MPLS.
- B. Configure 6PE forwarding between 6PE routers based on the IPv6 header
- C. Allow PE routers use the MP-iBGP extensions in the IPv6 network configuration to exchange IPv6 reachability information.
- D. Configure 6PE that provides global IPv6 reachability over IPv4 MPLS
Answer: D
NEW QUESTION 55
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 before being sent to the CE router (10.10.10.1)?
- A. The first and fourth autonomous systems change.
- B. The second and third autonomous systems change.
- C. The first AS changes, but no other autonomous systems change.
- D. The fourth AS changes, but no other autonomous systems change.
Answer: C
NEW QUESTION 56
A network architect is troubleshooting the L2TPv3 tunneling security due to the untrusted nature of the underlaying network. Which two L2TPv3 features does the architect deploy to address the ongoing issues? (Choose two.)
- A. asymmetric mutual authentication with PSK
- B. CHAP authentication
- C. TCP MD5 authentication
- D. control message rate limiting
- E. control message hashing
Answer: B,E
NEW QUESTION 57
DRAG DROP
Drag and drop the EVPN components from the left onto the correct planes on the right.
Select and Place:
Answer:
Explanation:
Section: Layer 2 VPNs
Explanation/Reference: https://www.cisco.com/c/dam/m/en_us/network-intelligence/service-provider/digital- transformation/knowledge-network-webinars/pdfs/0420-epn-ckn.pdf slide 8
NEW QUESTION 58
Refer to the exhibit.
Which statement about this output is true?
- A. The adjacent router is the egress LSR and has mpls ldp explicit-null configured.
- B. The adjacent LSR router configured mpls label range 0.
- C. The zero in the second column is the normal behavior of an egress router LSR.
- D. The router IP 192.168.1.2 sent an implicit null, and the output is from the penultimate LSR.
Answer: A
NEW QUESTION 59
Refer to the exhibit.
Which statement about this configuration is true?
- A. 192.168.1.2 must be reachable by all routers participating in the mvpn-intranet MVRF.
- B. Router 1 has statically defined thresholds for data MDT.
- C. The MVRF must be configured on each router on the customer and service provider networks.
- D. Router 1 will accept multicast routes with a route-target of 12:1.
Answer: D
NEW QUESTION 60
Refer to the exhibit.
An engineer is trying to configure an EVPN VWPS. What is the issue with this configuration?
- A. The member in the VPWS context should be the PE-facing interface.
- B. Interface GigabitEthernet0/1/0 should not have any IP address.
- C. The 12vpn evpn command should be instance 101.
- D. The service instance and the EVPN instance are different.
Answer: B
Explanation:
Reference:
https://www.cisco.com/c/en/us/td/docs/ios-xml/ios/mp_l2_vpns/configuration/xe-3s/asr903/16-7-1/ b-mpls-l2-vpns-xe-16-7-asr900/epvn_vpws_single_homed.pdf
NEW QUESTION 61 
Which statement describes the result of this BGP configuration?
- A. R1 establishes an iBGP relationship with peer 192.168.1.1.
- B. R1 operates on IPv6 only because the bgp default ipv4-unicast command is missing.
- C. R1 operates using IPv4 and VPNv4 address families.
- D. R1 establishes a VPNv4 eBGP relationship with neighbor 192.168.1.1.
Answer: A
NEW QUESTION 62
Which two are characteristics of using a non-MPLS peer-to-peer model over a traditional overlay model?
(Choose two.)
- A. The model is suited for nonredundant configurations.
- B. The customer specifies the exact site-to-site traffic profile.
- C. Routing information is exchanged between the customer router and one or a few PEs.
- D. Provider routers know the customer network topology.
- E. The configuration on a newly added site PE is updated automatically.
Answer: C,D
Explanation:
Reference:
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/
NEW QUESTION 63
Which is the primary function of a MPLS L3 VPN route target?
- A. It imports the external routes it identifies into VRFs that support Internet traffic
- B. It imports and exports identified routes into selected VRFs.
- C. It supports QoS by classifying traffic by file type when it applies MPLS EXP bits to each packet.
- D. It uniquely identifies NLRIs that have the same numeric value.
Answer: B
NEW QUESTION 64
A network engineer is 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?
- A. RIPv2
- B. BGP
- C. OSPF
- D. EIGRP
Answer: C
NEW QUESTION 65
An engineer is investigating an MPLS LDP issue. Which command should an engineer use on a Cisco IOS XE device to display the contents of the LFIB?
- A. show mpls ldp bindings
- B. show mpls forwarding-table
- C. show mpls ldp neighbors
- D. show mpls ldp labels
Answer: B
Explanation:
Reference: https://www.cisco.com/c/en/us/td/docs/ios-xml/ios/mpls/command/mp-cr-book/mp-s2.html
NEW QUESTION 66
Refer to the exhibit.
Which statement about this output is true?
- A. The adjacent router is the egress LSR and has mpls ldp explicit-null configured.
- B. The adjacent LSR router configured mpls label range 0.
- C. The zero in the second column is the normal behavior of an egress router LSR.
- D. The router IP 192.168.1.2 sent an implicit null, and the output is from the penultimate LSR.
Answer: A
NEW QUESTION 67
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 effectively scales to hundreds or thousands of sites?
- A. L3VPN using a hierarchical topology of N-PEs and U-PEs.
- B. L2VPN by encapsulating multiple frame formats with interworking.
- C. L3VPN with direct LSP connectivity between all PEs.
- D. L2VPN with the broadcast traffic processed at the ingress PE.
Answer: A
Explanation:
Section: VPN Architecture
NEW QUESTION 68
What must match in the EVPN and L2VPN configuration mode when configuring EVPN native in a router?
- A. address family
- B. interface
- C. bridge domain
- D. EVI
Answer: D
NEW QUESTION 69 
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, which two conclusions describe this configuration? (Choose two.)
- A. All three routers must be running a distance-vector routing protocol.
- B. The CE1 and CE2 VRFs can exchange routes only between their respective VRFs on PE1 and PE2.
- C. The CE1 and CE2 VRFs can access the default route provided by the Internet VRF.
- D. All three routers must be running MP-BGP.
- E. Only the CE2 VRF can access the default route provided by the Internet VRF.
Answer: B,D
Explanation:
Section: Layer 3 VPNs
NEW QUESTION 70
Which kind of traffic is supported in an MVPN Extranet?
- A. PIM dense mode
- B. PIM sparse mode
- C. Bidirectional PIM
- D. PIM dense mode with Reverse Path Forwarding
Answer: B
NEW QUESTION 71
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.)
- A. Type 2 routes contain inclusive source-specific multicast route information.
- B. The operator adds in "host-routing" under the VRF EVPN.
- C. Type 2 routes contain Ethernet Auto-Discovery information.
- D. Type 2 routes contain MAC/IP information.
- E. The operator adds in "host-routing" under the BVI651 interface.
Answer: D,E
NEW QUESTION 72
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 action caused this message?
- A. an attempt to remove a VRF Selection entry that does not exist
- B. an attempt to configure a VRF instance on an interface that already has VRF Selection configured
- C. an attempt to configure a VRF Selection table that does not exist
- D. the entry of an inconsistent IP address and mask for VRF Selection
Answer: A
Explanation:
Reference:
https://www.cisco.com/c/en/us/td/docs/ios/12_2/12_2sz/feature/guide/122szvrf.html
NEW QUESTION 73
Which BGP feature causes to replace the AS number of originating router with the AS number of the sending router?
- A. confederations
- B. route dampening
- C. AS override
- D. route reflectors
Answer: C
Explanation:
Reference: https://community.cisco.com/t5/networking-documents/understanding-bgp-as-override-feature/ta- p/3111967
NEW QUESTION 74
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