问题：

[多选]

Your boss， Miss ，is interested in CEF.
 What should you tell her？ （）

A . The FIB lookup is based on the Layer 3 destination address prefix （shortest match）.
B . The adjacent table is derived from the ARP table.
C . The FIB table is derived from the IP routing table.
D . When the adjacency table is full， a CEF TCAM table entry points to the Layer 3 engine to redirect the adjacency.
E . CEF IP destination prefixes are stored in the TCAM table， from the least specific to the most specific entry.
F . When the CEF TCAM table is full， packets are dropped.