单项选择题
Log messages are appearing very quickly on the console of your ERX Edge Router. Which Privileged Exec command disables real-time console logging？（）
A. no log here B. no log console C. destination console severity 7 D. destination console logging off
单项选择题 WhichcommanddisplaystheresultsofaloopbacktestyouexecutedonaCT3linemoduleinslot5，port0，t1number4？（）
单项选择题 WhatisthepurposeoftheOSPFhellopacket？（）
多项选择题 WhatarethethreeOSPFauthenticationmethodssupportedontheERXEdgeRouter？（）
