Which utility can you use to locate MPLS faults?

MPLS traceroute is a diagnostic tool designed to trace the path taken by packets through an MPLS Label Switched Path (LSP), helping to identify where forwarding issues or loops might be occurring along the path. It provides hop-by-hop information, including the labels being used, which is critical for troubleshooting MPLS faults.

EEM (Embedded Event Manager) is a Cisco IOS feature for on-box event detection and automation, not a utility for actively locating MPLS faults.

MPLS LSP ping is used to verify the reachability of an LSP endpoint and confirm end-to-end data plane connectivity, but it does not provide the hop-by-hop path information needed to locate faults like `traceroute` does.

QoS (Quality of Service) is a mechanism for managing network traffic to reduce packet loss, latency, and jitter, and is not a utility for locating network faults.