单项选择题 While a technician is responding to a customers call, a co-worker keeps insisting on telling the technician about their weekend. Which of the following is the BEST course of action?（）

单项选择题 Which of the following interfaces are typically supported on the input side of a KVM switch?（）

单项选择题 Which of the following BEST describes the initial process of setting up a new operating system from a CD-ROM? （）