题型:多选题 标签:VPN
题目:
5. Which of the following would be considered a valid type of VPN? (Choose all that apply.)下 面哪些被认为是VPN的有效类型?(选出所有满足条件的答案)
A.VLAN
B.X.25
C.Ethernet 以太网
D.IPsec site-to-site IPSec站点到站点