单项选择题 Whichfilecontainstheattributesusedtosetupanewuseraccountwhenexecuting’mkuser’withoutanyflags？（）

单项选择题 Whichdaemonidentifiesavailablefilesystemsthroughthe/etc/xtabfile？（）

单项选择题 A project requires a new server to be set up with the ability to automatically fail over its Ethernet connection to a second connection if a network failure occurs. Which of the following provides greatest resiliency？（）