单选题A company has recently received a new ADSL backup Internet connection. Which of the followingwill MOST likely be used between the modem and the ISP?（）A PPPoEB RASC IPSecD MSCHAP
题目
单选题
A company has recently received a new ADSL backup Internet connection. Which of the followingwill MOST likely be used between the modem and the ISP?（）
A
PPPoE
B
RAS
C
IPSec
D
MSCHAP