LPI 102-500: LPIC-1 Exam 102

Last checked November 10, 2026 against the official LPI exam page.

1. Question 1109 Networking Fundamentals

   A host is configured with 192.168.10.37/24. Which address is the IPv4 broadcast address for its network?

   1. A192.168.10.255
   2. B192.168.10.0
   3. C192.168.0.255
   4. D192.168.10.38
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   Correct answer: A

   With a /24 mask the network is 192.168.10.0 and the broadcast address is the last address in that range, 192.168.10.255. 192.168.10.0 is the network address, 192.168.0.255 belongs to a different network, and 192.168.10.38 is just the next host address.

2. Question 2107 Administrative Tasks

   An administrator must add the existing user alice to the supplementary group developers, and alice must keep her current group memberships. Which command does this?

   1. Auseradd -G developers alice
   2. Busermod -G developers alice
   3. Cgroupmod -a developers alice
   4. Dusermod -aG developers alice
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   Correct answer: D

   usermod -aG appends the group to the supplementary list without removing existing memberships. Using -G alone replaces the whole list, groupmod has no option for adding members, and useradd cannot modify an account that already exists.

3. Question 3108 Essential System Services

   A Linux server's clock drifts by several seconds each week. The administrator wants the system clock to keep synchronising automatically with network time servers. Which service does this?

   1. Achronyd daemon
   2. Bcron daemon
   3. Csyslogd daemon
   4. Dlogrotate utility
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   Correct answer: A

   chronyd is a daemon that keeps the system clock synchronised with NTP servers. The cron daemon runs scheduled jobs, syslogd records log messages, and logrotate rotates log files, so none of them adjusts the clock.

4. Question 4110 Security

   An auditor needs a list of all files on the system that have the setuid bit set. Which find command produces this list?

   1. Afind / -user root
   2. Bfind / -perm 0777
   3. Cfind / -perm -4000
   4. Dfind / -name setuid
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   Correct answer: C

   -perm -4000 matches files in which the setuid bit is set, regardless of the other permission bits. -perm 0777 matches only files with exactly mode 777, -user root selects files by owner, and -name setuid matches only files whose name is setuid.

5. Question 5105 Shells and Shell Scripting

   A user opens a new terminal window inside a graphical desktop session on a typical Linux distribution. The shell started is an interactive bash shell that is not a login shell. Which startup file does bash read for this kind of shell?

   1. A~/.bash_logout
   2. B~/.bashrc
   3. C~/.bash_history
   4. D~/.inputrc
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   Correct answer: B

   Bash reads ~/.bashrc for interactive non-login shells such as a new terminal window, which is why aliases and prompt settings placed there appear in those windows. ~/.bash_logout runs when a login shell exits, ~/.bash_history only stores past commands, and ~/.inputrc configures readline key bindings rather than the shell startup.