Which of the following is true of Multiprotocol Label Switching? $($Select two.$)$

answer

MPLS can carry ATM, SONET, and Ethernet traffic.

MPLS is designed to forward only packets created with the TCP$/$IP protocol.

Packets routed using MPLS require additional routing lookup overhead.

CEF is required for all MPLS$-$enabled Cisco routers.

MPLS$-$enabled routers switch packets based on the packet contents, not on label information.