An operator inspects the LFIB and sees an entry with action 'pop' for incoming label 16 on interface Gi0/1. What does this indicate the router will do for matching labeled packets?

The 'pop' action in the Label Forwarding Information Base (LFIB) indicates that the router will remove the top label (label 16 in this case) from the incoming MPLS packet. After popping the label, the router will then treat the packet as a standard IP packet and perform an IP lookup (Layer 3 lookup) on the now-exposed IP header to determine the next hop for forwarding. This is a common action at the edge of an MPLS domain, where labeled traffic exits the MPLS cloud and returns to IP routing. Swapping the label would be a 'swap' action. Dropping the packet is incorrect as 'pop' is a forwarding action. Encapsulating with an additional label is a 'push' action.