What class contains methods that allow you to access information about files?

An administrator notes that after a recent power outage, some open files were corrupted on one affected file server. Which of the following items should the administrator consider to determine the cause of this corruption?

A. The servers memory B. The servers RAID controller battery C. The servers processor D. The servers NIC teaming configuration

Which of the following traversals requires more than linear time in the worst case?

a. inorder b. level order c. postorder d. preorder e. all of these traversals are linear time