单项选择题 A technician notices that there is a second partition on the primary hard drive. This partition is not assigned a drive letter and is not accessible from Windows. Which of the following is the MOST likely explanation for this extra partition?（）

多项选择题 Which of the following commands verifies connectivity between two hosts?（）

单项选择题 A customer reports that the laser printer produces poor quality printouts. Having arrived onsite, the technician has a discussion with the customer and reviews some examples of their print jobs. Which of the following should the technician do NEXT? （）