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Cisco 300-515 Exam Syllabus Topics:

Section	Objectives
VPN Fundamentals in Service Provider Networks	- MPLS VPN architecture 1. VRF concepts and implementation 2. Route distinguisher and route target usage - VPN models 1. Layer 2 VPN basics 2. Layer 3 VPN basics
Advanced VPN Technologies	- Segment routing integration with VPNs - Inter-AS VPN architectures - Multicast VPN (MVPN)
MPLS VPN Services Implementation	- L3VPN configuration 1. MP-BGP for VPNv4 routes 2. PE-CE routing protocols - L2VPN services 1. EVC-based services 2. VPWS and VPLS concepts
Service Provider VPN Operations	- Performance and scalability considerations - Troubleshooting VPN connectivity - QoS in MPLS VPN environments

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Cisco Implementing Cisco Service Provider VPN Services Sample Questions (Q74-Q79):

NEW QUESTION # 74
Refer to the exhibit.

Which result occurs when PE1 learns a new MAC address and all three PEs are enabled with EVPN native?

A. The MAC address is entered into the CAM table only if it is learned on the native VLAN.
B. A system notification is sent to the network administrator that triggers the manual configuration of the new MAC address on PE2 and PE3.
C. The new MAC address is sent by BGP to PE2 and PE3 as a Type 2 BGP route.
D. The MAC address is entered into the CAM table and is classified for use on the native VLAN

Answer: C

Explanation:
Reference:
https://www.cisco.com/c/en/us/td/docs/routers/asr9000/software/asr9k-r6-4/lxvpn/configuration/ guide/b-l2vpn-cg-asr9000-64x/b-l2vpn-cg-asr9000-64x_chapter_01011.html

NEW QUESTION # 75
How does an EVPN manage data plane learning?

A. When a C-MAC moves within the EVPN service, the PE router relearns its new B-MAC after a defined timer expires.
B. When the core device learns the MAC address of a remote site, it also learns the Ethernet bundle MAC address for the customer VLAN.
C. When remote PEs in the core network receive label-encapsulated traffic, they learn the destination IP address.
D. When customer traffic arrives at the PE router, the MAC table learns the source C-MACs.

Answer: D

Explanation:
In EVPN, data plane MAC learning occurs when customer frames arrive at the PE. The PE inspects the source MAC (C-MAC) of the incoming frame and installs it in its MAC-VRF table.
This enables proper forwarding within the EVPN service, complementing the control-plane MAC learning done via BGP.

NEW QUESTION # 76
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. control message hashing
B. asymmetric mutual authentication with PSK
C. CHAP authentication
D. control message rate limiting
E. TCP MD5 authentication

Answer: A,C

NEW QUESTION # 77
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 second and third autonomous systems change.
B. The first and fourth autonomous systems change.
C. The fourth AS changes, but no other autonomous systems change.
D. The first AS changes, but no other autonomous systems change.

Answer: D

NEW QUESTION # 78
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. The operator adds in "host-routing" under the VRF EVPN.
B. The operator adds in "host-routing" under the BVI651 interface.
C. Type 2 routes contain Ethernet Auto-Discovery information.
D. Type 2 routes contain inclusive source-specific multicast route information.
E. Type 2 routes contain MAC/IP information.

Answer: B,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 # 79
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