单项选择题
What is used to segment larger networks into smaller networks?（）
A.supernet masks B.subnet masks C.wildcard masks D.route filtering
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?（）
多项选择题 Which two statements are true regarding interface properties? （）
