300-515 MPLS Practice Questions
The free 300-515: Implementing Cisco Service Provider VPN Services (SPVI) questions that deal with MPLS, with answers and explanations. The full bank and the timed practice test cover every topic the exam asks about.
Question #7
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?
Correct answer: B
Explanation
OSPF as a PE-CE protocol needs a separate OSPF process per VRF on IOS/IOS XE, whereas RIP, EIGRP and BGP support address-family configuration within a single process.
Question #8
While implementing Layer 3 MPLS VPN, which feature should an engineer use at the PEs to transform the customer IPv4 prefixes into a unique 96-bit prefix?
Correct answer: C
Explanation
The route distinguisher is a 64-bit value prepended to the 32-bit customer IPv4 prefix, creating a unique 96-bit VPNv4 prefix so overlapping customer addresses stay distinct. The route target only controls import and export of routes into VRFs.
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