Which two statements describe functions of LDP? (Choose two.)

LDP (Label Distribution Protocol) is fundamental to MPLS. It advertises labels for specific Forwarding Equivalence Classes (FECs), which are groups of packets that are forwarded in the same way. This means that when a router receives a packet belonging to a particular FEC, it knows which label to assign or swap based on the LDP advertisements it has received. Therefore, "It advertises labels per Forwarding Equivalence Class" and "It uses Forwarding Equivalence Class" are both correct. LDP is defined in RFC 5036, not RFC 3038 and 3039. LDP does not require MPLS Traffic Engineering, as it can operate independently for basic label distribution. While RSVP (Resource Reservation Protocol) can be used for MPLS TE, LDP itself does not require or exclusively use RSVP for its label distribution functions.