The business transmission between departments of an enterprise needs to adopt IPSec to provide end-to-end security protection, and data must be encrypted for transmission.
According to the requirements of the enterprise's business transmission security, which encapsulation protocol should IPSec use ? ( Choose one or more )

The L2TP tunnel information can be displayed through the ____ command .

In L2TP networking, what are the authentication methods for users by LNS?

Ethernet 1000BASE-T cable uses a standard _____ most large transmission distance is ______ .

Please order under PPPoE Client complementary set the correct parameters :
[HG] dialer-rule 1 ip permit
[HG] interface dialer 2
[HG-Dialer1] dialer user userl
[HG-Dialer1] dialer-group____1____
[HG-Dialer1] dialer bundle ____V___
[HG-Dialer1] ip address ppp-negotiate
[HG-Dialer1] ppp pap local-user user1 password simple pass1
[HG] interface ethernet 0/0
[HG-Ethernet0/0] pppoe-client dial-bundle-number 10