Nokia 4A0-100 Exam - Topic 2 Question 122 Discussion

Actual exam question for Nokia's 4A0-100 exam

Question #: 122
Topic #: 2

[All 4A0-100 Questions]

Where would you expect to find a P router in a service provider's network?

AAt the edge of the provider's network facing the customer.

BAt the edge of the customer's network facing the provider.

CIn the core of the provider's network.

DOn the customer premises.

Show Suggested Answer

Suggested Answer: C

A P router (Provider router) is located in the core of the service provider's network. Its functions include:

Forwarding MPLS-labeled packets between PE routers.

Not interacting directly with customer routes or routing instances.

Having no knowledge of VPN routing or customer-specific services.

Option C is correct -- P routers sit in the MPLS core, isolated from customer edge.

Nokia MPLS and Services Guide -- Core vs Edge Router Roles

Nokia SRA Study Guide -- 'PE and P Devices in MPLS'

by Charlesetta at Mar 04, 2026, 03:35 AM

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1 month ago

I think a P router is more likely to be in the core of the provider's network, but I'm not completely sure.

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