A. lsdev -C diskB. lsdev -P diskC. lsdev -Cc diskD. lsd……

单项选择题An operator needs to create dir1 dir2 dir3. The dir1 does not exist. What command can be used to create dir2 and dir3?（）

A. mkdir /dir1/dir2/dir3
B. mkdir -R dir1/dir2/dir3
C. mkdir -p /dir1/dir2/dir3
D. mkdir -r /dir1/dir2/dir3

单项选择题How can an operator list all its history of commands in one step?（）

A. Run c -l 0?from the command line.Run ?c -l 0?from the command line.
B. Invoke SMIT for the shell environment.
C. Run the SC + H?combination at the command prompt.Run the ?SC + H?combination at the command prompt.
D. Use a rep?command with its UID against the /var/log/history_cmds file.Use a ?rep?command with its UID against the /var/log/history_cmds file.

单项选择题An operator is asked to shutdown the telnet service for security reasons. What are the appropriate commands to achieve this?（）

A. comment out telnetd in /etc/services refresh -s inetd
B. comment out telnetd in /etc/inetd.conf refresh -s inetd
C. comment out telnetd in /etc/rc.tcpip refresh -s telnetd
D. comment out telnetd in /etc/inetd.conf refresh -s telnetd

单项选择题What command can be used to make all mountable filesystems available for use?（）

A. mount -a
B. automount all
C. varyonvg -m -a
D. run the /etc/filesystems script

单项选择题Which of the following will occur if an operator types the command vi file.out?（）

A. If the file exists it will be opened for editing. If the file does not exist an error message will be displayed.
B. If the file exists it will be opened for editing. If the file does not exist a new file with the name file.out will be created and opened for editing.
C. If the file exists an error message will be displayed. If the file does not exist a new file with the name file.out will be created and opened for editing.
D. If the file exists the operator will be asked whether to open the file or overwrite the file. If the file does not exist a new file with the name file.out will be created and opened for editing.