You are employed within a NOC at a regional service provider as a Tier 3 NOC engineer. The
network that you support comprises leased facilities from a much larger international service
provider. Your customer reports a reachability problem between two offices. The service desk
performs its standard troubleshooting procedures without success and has escalated the incident

to you. After 45 minutes of continued troubleshooting, you are unable to resolve the connectivity
problem.
To which two areas should you next escalate the incident? (Choose two.)

A.
service assurance team

B.
router vendor

C.
business relationship manager

D.
carrier

E.
service desk