LPI的認證共分為四個等級，由淺到深分別是Linux Essentials、LPIC-1、LPIC-2、LPIC-3。LPIC的認證必須一階階地考取，但同階的單科考試順序可以隨意。而Linux Essentials算是暖身用途的認證，就算不考也可以如筆者一樣直接從LPIC-1開始。

Which of the following commands connects to the remote host example.com which has OpenSSH listening on TCP port 2222? (Choose TWO correct answers.) A. ssh --port 2222 example.com B. ssh -p 2222 examp...

On a Linux system with shadow passwords enabled, which file in the file system contains the password hashes of all local users? (Specify the full name of the file, including path.)

Which of the following commands can be used to limit the amount of memory a user may use? A. umask B. usermod C. ulimit D. passwd E. chage

What is a purpose of an SSH host key? A. It must be sent by any SSH client in addition to a user key in order to identify the client's host. B. It provides the server's identity information to connec...

Which of the following commands preloads and manages keys that are used for automatic authentication while logging in to other machines using SSH? A. sshd B. ssh-agent C. ssh-keygen D. ssh-add

Which file contains a set of services and hosts that will be allowed to connect to the server by going through a TCP Wrapper program such as tcpd? (Specify the full name of the file, including path.)

Which file lists which users can execute commands using sudo? (Specify the full name of the file, including path.)

Which directory holds the files that configure the xinetd service when using several configuration files instead of an integrated configuration file? (Specify the full path to the directory.)

Which of the following find commands will print out a list of files owned by root and with the SUID bit set in /usr? A. find /usr -uid 0 -perm +4000 B. find -user root +mode +s /usr C. find -type sui...