How is a display manager started?
A. It is started automatically when a X11 user logs in to the system console.
B. It is started by inetd when a remote hosts connects to the X11 port.
C. It is started by a user using the command startx.
D. It is started like any other system service by the init system.
正解:D
質問 2:
What is the purpose of the command mailq?
A. It is a proprietary tool contained only in the qmail MTA.
B. It queries the mail queue of the local MTA.
C. It is a multi-user mailing list manager.
D. It fetches new emails from a remote server using POP3 or IMAP.
E. It is a command-line based tool for reading and writing emails.
正解:B
質問 3:
Which of the following statements is true regarding systemd timer units?
A. Timer units only exist in the system scope and are not available for users.
B. A dedicated system service, systemd-cron, handles the execution of timer units.
C. The command executed by the timer is specified in the timer unit's [Cmd] section.
D. Each systemd timer unit controls a specific systemd service unit.
E. Timer units can only be defined within a service unit's file.
正解:D
質問 4:
Which file, when using Sendmail or a similar MTA system, will allow a user to redirect all their mail to another address and is configurable by the user themselves?
A. ~/.vacation
B. /etc/mail/forwarders
C. /etc/alias
D. ~/.forward
E. ~/.alias
正解:D
質問 5:
Which environment variable should be set in order to change the time zone for the commands run from within the environment variable's scope? (Specify the variable name only.)
正解:
TZ
質問 6:
Which of the following programs can be used to determine the routing path to a given destination?
A. route
B. traceroute
C. netstat
D. dig
E. ping
正解:B
質問 7:
After configuring printing on a Linux server, the administrator sends a test file to one of the printers and it fails to print. What command can be used to display the status of the printer's queue? (Specify ONLY the command without any path or parameters.)
正解:
lpq, /usr/bin/lpq, lpstat, /usr/bin/lpstat
質問 8:
What can be specified with useradd? (Choose two.)
A. The SSH keys used to login to the new account.
B. The absolute path to the user's home directory.
C. Which printers are available for the new user.
D. The numeric user ID (UID) of the user.
E. Commands the user can run using sudo.
正解:B,D
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