LPIC-1 Administrative Tasks Practice Question
Which THREE signals are commonly used to terminate a process with the kill command?
⚠ Common exam trap
A common mix-up: candidates confuse SIGSTOP with SIGKILL or SIGTERM, or mistakenly include SIGINT as a common kill command signal, when in fact SIGINT is more associated with terminal interrupts rather than direct process termination via kill.
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
SIGKILL
SIGKILL (signal 9) is one of the three signals commonly used to terminate a process with the kill command because it forcefully kills the process without allowing it to clean up or ignore the signal. SIGTERM (signal 15) is the default signal sent by kill, requesting graceful termination. SIGHUP (signal 1) is traditionally used to hang up a terminal line but is also commonly used to reload configuration files or terminate processes in daemon management.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
SIGSTOP
Why it's wrong here
Stops (pauses) the process; does not terminate it.
- ✓
SIGKILL
Why this is correct
Forces immediate termination; cannot be caught or ignored.
- ✗
SIGINT
Why it's wrong here
Typically generated by Ctrl+C; terminates the process, but not as commonly used with kill as SIGTERM or SIGKILL.
- ✓
SIGHUP
Why this is correct
Often used to restart or reload daemons; can terminate process if not handled.
- ✓
SIGTERM
Why this is correct
Sends a termination request; process can catch and clean up.
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Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
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