多项选择题
Which two Ethernet fiber-optic modes support distances of greater than 550 meters?（）
A. 1000BASE-CX B. 100BASE-FX C. 1000BASE-LX D. 1000BASE-SX E. 1000BASE-ZX
多项选择题 What are two characteristics of RIPv2?（）
多项选择题 Which two wireless encryption methods are based on the RC4 encryption algorithm?（）
多项选择题 Which two features did WPAv1 add to address the inherent weaknesses found in WEP?（）
