Quiz 300-515 - Implementing Cisco Service Provider VPN Services–The Best Test Cram Pdf

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Cisco 300-515 Exam Syllabus Topics:

Section	Weight	Objectives
Topic 1: Layer 3 VPNs	35%	- Implement extranet/shared services (route targets/policy) - Implement multicast VPN (Intranet, Extranet, mLDP) - Describe Inter-AS L3VPNs (Options A, B, AB, C) - Describe routing requirements (MP-BGP, PE-CE routing) - Describe CSC concepts - Troubleshoot Intra-AS L3VPNs (PE-CE, PE-PE, PE-RR)
Topic 2: IPv6 VPNs	10%	- Describe IPv6 VPN routing requirements (MP-BGP, PE-CE) - Troubleshoot IPv6 VPN provider edge (PE-PE, PE-CE)
Topic 3: Layer 2 VPNs	30%	- Implement EVPN (IRB, VPWS, native) - Troubleshoot L2VPN services (E-LAN, E-Line, E-Tree) - Describe EVPN concepts (data plane/control plane, multihoming, suppression, forwarding) - Implement Ethernet OAM
Topic 4: VPN Architecture	25%	- Troubleshoot underlay (Core IGP, LSP) - Describe Layer 2 service architecture (IOS XR Ethernet Flowpoints, IOS XE EVCs) - Describe L3VPN control plane (MP-BGP, RD, RT, VPN labels, VRF, PE-CE) - Describe L3VPN data plane (underlay label, VRF forwarding, VPNv6) - Compare VPN architecture (Layer 2 vs Layer 3, Inter-AS/Intra-AS)

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Cisco 300-515 questions and answers

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Cisco Implementing Cisco Service Provider VPN Services Sample Questions (Q170-Q175):

NEW QUESTION # 170
What is a key difference between Layer 2 VPNs and Layer 3 VPNs?

A. Layer 2 VPNs encapsulate Ethernet frames in MPLS packets, and Layer 3 VPNs use labeled BGP routes to distribute IP prefixes across the MPLS core.
B. Layer 2 VPNs can propagate VLAN tags across the MPLS network, and Layer 3 VPNs use BGP communities to extend MPLS labels across different VRFs.
C. Layer 2 VPNs require the use of a Layer 2 forwarding plane with per-site MAC learning, and Layer 3 VPNs integrate Layer 2 and Layer 3 forwarding with Cisco MPLS TE for traffic differentiation.
D. Layer 2 VPNs provide Layer 2 transport using pseudowires, and Layer 3 VPNs abstract Layer 2 information using VPLS instances.

Answer: A

Explanation:
Layer 2 VPNs transport customer Ethernet frames transparently across the MPLS backbone by encapsulating the Layer 2 frame inside an MPLS pseudowire. Layer 3 VPNs, by contrast, distribute customer IP routes using MP-BGP, attaching MPLS labels to those IP prefixes so the provider core forwards packets based on labeled Layer 3 information rather than Layer 2 frames.

NEW QUESTION # 171
An engineer is troubleshooting AToM on an IOS XE router and receives an error when creating the xconnect.
Which command does he need to complete to create the xconnect in AToM?

A. protocol none
B. encapsulation mpls
C. protocol 12tpv3
D. encapsulation 12tpv3

Answer: B

Explanation:
Section: Layer 2 VPNs

NEW QUESTION # 172
To maintain appropriate SLA levels, a network engineer must ensure that the ISP's network devices can perform fault detection, fault isolation, and fault reporting for LAN, MAN, and WAN segments. The implementation must adhere to these requirements:
- supported on all Ethernet interfaces
- allows for proactive fault detection and notification
- provides real-time monitoring and troubleshooting
- scalable and able to support large-scale Ethernet networks
Which action must the network engineer take to meet the requirements-

A. Implement Ethernet CFM to verify connectivity and detect problems in the network.
B. Implement IP SLA to monitor network performance, packet drops, and network segment routing issues.
C. Enable E-PM to identify and troubleshoot performance issues.
D. Enable IEEE 802.3ah EFM to gather performance metrics and provide alerts.

Answer: A

Explanation:
Ethernet CFM (Connectivity Fault Management, IEEE 802.1ag / ITU-T Y.1731) is designed specifically for carrier-grade Ethernet OAM. It provides scalable, hierarchical fault detection, isolation, and reporting across LAN, MAN, and WAN Ethernet segments. It supports proactive monitoring, real-time troubleshooting, and is available on all Ethernet interfaces, meeting the SLA requirements listed.

NEW QUESTION # 173
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?

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

Answer: C

NEW QUESTION # 174
Which two BGP attributes prevent loops in a route reflector environment? (Choose two.)

A. origin
B. cluster ID
C. AS_PATH
D. originator ID
E. local preference

Answer: B,D

Explanation:
Reference: https://www.ciscopress.com/articles/article.asp?p=2756480&seqNum=10

NEW QUESTION # 175
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