单项选择题
A.SSID(Service SetIdentifier) B.MAC(Media Access Control)Address Control C.WPA(Wi-Fi Protected Access)加密 D.WEP(Wired Equivalent Privacy)加密
A.加密处理 B.虚拟私有网络 C.存取控制系统 D.防火墙
A.数位签章(Digital Signature) B.数位水印(Digital Watermarking) C.蓝牙(Bluetooth)技术 D.公开金钥基础建设(Public Key Infrastructure,PKI)