单项选择题
Which commnand would correctly define a router's host-name?（）
A.A B.B C.C D.D
单项选择题 What is used to segment larger networks into smaller networks?（）
单项选择题 Which CLI command displays error statistics for an interface in real-time?（）
单项选择题 Which CLI command displays packet and byte counts for an interface in real-time?（）
