单选题When is an IPSec SA built on the Teleworker Router?（）Awhen the router is booted upBwhen the router administratively does a no shutdown on the IPSec SA Cwhen 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 Dwhen the ISAKMP SA completes negotiation of all IPSec SAs (one per access-list line in the crypto ACL), it will be brought up immediately
单选题
When is an IPSec SA built on the Teleworker Router?（）
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
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