多项选择题 A user has a new network printer they want setup in their home. The user wants all their PCs aswell as any guests with laptops to be able to print to it. Which of the following connection methods would be the MOST effective for meeting these requirements？（）

单项选择题 Which of the following protocols would be used in order to log into a router to configure a VLAN?（）

单项选择题 When a user’s computer is first turned on, they see a lock symbol and a blinking cursor. Which of the following was configured in the BIOS to show this?（）