多项选择题 You are configuring a new Catalyst switch that you want to manage remotely from workstations on other network segments within your enterprise.Which of the following are required to allow remote management of the switch over IP?（）

单项选择题 Which command is used to display the placement and direction of an IP access control list on a router?（）

单项选择题 What is the purpose of typing o/r 0x2142 during a password recover procedure on a 2500 series router?（）