The maxmbuff is low by default for systems expecting high network traffic and/or usage.  Which of the following utilities should be used to report requests for mbufs that have failed and/or been denied？（）

Whichofthefollowingcommandsshouldbeusedtodeterminewhich...

单项选择题Which of the following commands should be used to determine which disk of a system is experiencing a disk I/O performance problem？（）

Whichofthefollowingcommandscanbeusedtocleanupafailedsof...

单项选择题Which of the following commands can be used to clean up a failed software installation process？（）

Whichofthefollowingcommandscanbeusedtoreviewthesystemer...

单项选择题Which of the following commands can be used to review the system error logs？（）