单项选择题
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?（）
单项选择题 What command can be used to make all mountable filesystems available for use?（）
单项选择题 Which of the following will occur if an operator types the command vi file.out?（）