单项选择题 When servicing a laptop, which of the following components usually requires the keyboard to beremoved before the component can be replaced?（）

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?（）