单项选择题 Which of the following switches for the FORMAT command line utility allows Bob, a technician, toformat a floppy disk the FASTEST?（）

单项选择题 Which of the following command line utilities allows a technician to create a new directory?（）

单项选择题 Which of the following command line tools can be used to display the default gateway, IP address,and DNS servers currently being used by a host?（）