350-501 RSVP-TE PATH Message Practice Question
Which RSVP-TE message is used to reserve resources along the path and includes the Explicit Route Object (ERO)?
⚠ Common exam trap
Many candidates mistakenly think RESV carries the ERO because both relate to path setup, but the ERO is only in the PATH message.
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
✓
PATH
The PATH message is sent from the source to the destination to request resource reservation and includes the Explicit Route Object (ERO), which specifies the path to be taken. The RESV message, sent upstream in response, includes objects like LABEL, STYLE, and RECORD_ROUTE, but not the ERO.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
RESV_CONFIRM
Why it's wrong here
RESV_CONFIRM is an optional message sent by the receiver to confirm the reservation, but it does not contain the ERO.
- ✓
PATH
Why this is correct
Correct. The PATH message carries the ERO to specify the explicit route for the LSP.
- ✗
PATH_TEAR
Why it's wrong here
PATH_TEAR is used to tear down the path and release resources, not to reserve or carry the ERO.
- ✗
RESV
Why it's wrong here
The RESV message reserves resources but does not include the Explicit Route Object (ERO); the ERO is only present in the PATH message.
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JA
Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
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