单项选择题
In which mode are users allowed to configure the device， including interfaces， protocols， user access， and system hardware properties？（）
A.priviledged mode B.configuration mode C.monitoring mode D.operational mode
单项选择题 Whatrepresentsthedecimalequivalenceof11000000101010001010110011110001？（）
单项选择题 WhichstatementiscorrectaboutthevalidateoptionwhenupgradingJUNOSsoftware？（）
