While installing an application， the administrator is instructed to perform two final tasks prior to starting the application：  1.Set the ownership of a file named ’control_file’ to be owned by the user ’database’ and the group ’appsrvr’.  2.Change the permissions of ’control_file’ to 0766.  After these two tasks have been completed， what will the file permissions look like when ’ls -l control_file’ is executed？（）

Which command can a system administrator use to verify that a tape is in backup format and is readable by the system？（）

Review the following program.What is the possible problem？（）

A user’s print jobs default to PRINTER_A.The user wants to change their default printer to PRINTER_B.How can the system administrator change the user’s default printer to PRINTER_B？（）

Given the following script， why does the output come out as an empty line instead of "dog"？（）

A user reports that they cannot cd to /tmp/application. A system administrator entered the following command：  （1）ls -ld /tmp/application  （2）drw-r--r-- 4 root system 512 Jan 15 14：09 application  What is the most likely cause of the problem？（）

Due to operational commitments， a system has a very short backup window during the week， but is not used from Saturday morning through Sunday at Midnight. Which of the following minimizes backup time， while providing the best data restore coverage？（）

A system administrator has a server that is performing poorly. The vmstat command identifies that high CPU usage is the problem. Which of the following commands can be used to identify the eight most active processes running on the server？（）

A system administrator used the savevg command to back up the testvg each night. There is now a requirement to exclude the /test/static filesystem from the backup. How can this be accomplished？（）

How can a directory be excluded from a mksysb backup of the following？（）