单项选择题 YouareresponsiblefornetworkmonitoringandneedtomonitortrafficoveraroutednetworkfromaremotesourcetoanIDSorIPSlocatedintheheadquarterssite.Whatwouldyouuseinordertoaccomplishthis？（）
单项选择题 WhichofthefollowingdescribestheappropriateportassignmentandmessageexchangeinastandardTFTPtransaction？（）
问答题 网络安全涉及到TCP/IP哪几层？