Which of the following entries should be added to the syslog.conf file to capture information to troubleshoot a problem reported with e-mail? （）

A. class 
B. tier
C. shares 
D. limits

A. Check  /etc/hosts. 
B. Check  /etc/resolv.conf. 
C. Check for packet errors. 
D. Check to see if the master server is up.

A. The df command only counts the number of disk blocks and superblocks. 
B. The df command ignores space used for inodes, gnodes, and vnodes.
C. The du command does not take into account filesystem metadata. 
D. The du command counts indirect blocks and superblocks in its calculations.