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What should be your next troubleshooting step?

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The PE and CE interfaces are in the UP/UP state. The junior Network Engineer has validated Layer 3 functionality by pinging the adjacent interface, however the customer is unable to access the provider network. What should be your next troubleshooting step?
A. Validate that the encapsulation method is utilizing Point-to-Point Protocol
B. Validate that the destination customer network is in the correct VRF
C. Validate that the circuit clocking is inaccurate and needs to be synchronized on both sides
D. Check the physical connection between both devices to ensure stability
E. Identify incorrect RADIUS configuration is present on the PE device
F. Check that an access-list is mis-configured on the loopback 0 interface and needs to be corrected
Correct Answer: B

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