单选题A "trusted" client needs to communicate with a server that has been configured to use CLIENT authentication. Which of the following will be used to verify passwords?（）A User ID/password fileB Communications layerC Client applicationsD Operating system
题目
单选题
A "trusted" client needs to communicate with a server that has been configured to use CLIENT authentication. Which of the following will be used to verify passwords?（）
A
User ID/password file
B
Communications layer
C
Client applications
D
Operating system