单项选择题
A. ping -a
B. ping -f
C. ping -r
D. ping -t
单项选择题 If a technician needs to convert a hard drive from Basic to Dynamic, which of the following utilities would the technician use?（）
单项选择题 Which of the following utilities will a technician use to determine how many partitions a hard drive has?（）
单项选择题 For the IP address 192.168.2.1 which of the following subnet masks would be MOST likely used?（）