患者办理住院手续的流程是什么？

A. 正确
B. 错误

A. when the router is booted up
B. when the router administratively does a no shutdown" on the IPSec SA
C. when traffic matches a line of the access-list tied into the crypto-map in the router configuration, and that particular IPSec SA is not already up
D. when the ISAKMP SA completes negotiation of all IPSec SAs (one per access-list line in the crypto ACL), it will be brought up immediately