350-501 Automation and Quality of Services Practice Question
An SP is deploying SR-PCE for centralized traffic engineering. Which THREE functions does the PCE perform? (Select three.)
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Computes path for traffic-engineered LSPs based on constraints.
PCE computes paths based on constraints, communicates via PCEP with routers (PCCs), and can instantiate SR-TE policies.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
Computes path for traffic-engineered LSPs based on constraints.
Why this is correct
Primary function of PCE.
- ✗
Distributes link-state information using BGP-LS.
Why it's wrong here
BGP-LS is used to feed topology to PCE, but not a function of PCE itself.
- ✓
Instantiates SR-TE policies on routers.
Why this is correct
PCE can initiate SR-TE policy instantiation.
- ✓
Signals path to PCC using PCEP.
Why this is correct
PCE sends computed paths to PCCs via PCEP.
- ✗
Configures MPLS forwarding on routers.
Why it's wrong here
Forwarding is configured by the router itself.
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Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
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