This LPIC-1 practice question tests your understanding of gnu and unix commands. This is a configuration task: choose the command set that satisfies every stated requirement. Small differences — like 'secret' vs 'password' or 'transport input ssh' vs 'all' — change whether the answer is correct. After answering, compare your reasoning against the explanation and wrong-answer breakdown below. Once you have made your selection, read the full explanation to reinforce the concept and understand why each distractor is designed to mislead on exam day.
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
The parent process reloads its configuration, and child processes continue serving.
The kill command with SIGHUP (signal 1) sent to the parent httpd process (PID 12345) instructs the parent to reload its configuration files and gracefully restart its child worker processes. This is the standard behavior for Apache httpd and many other daemons: the parent process rereads configuration, spawns new children, and terminates old ones without dropping existing connections.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
✗
Only the parent process (PID 12345) is terminated.
Why it's wrong here
SIGHUP causes the parent to reload configuration; it does not terminate.
✗
Only child processes are restarted.
Why it's wrong here
SIGHUP is sent to parent; it manages children.
✓
The parent process reloads its configuration, and child processes continue serving.
Why this is correct
SIGHUP tells Apache to reload configuration without stopping.
Related concept
Read the scenario before looking for a memorised answer.
✗
All httpd processes are terminated immediately.
Why it's wrong here
SIGHUP is not SIGTERM or SIGKILL.
Common exam traps
Common exam trap: answer the scenario, not the keyword
A common misconception is that SIGHUP always terminates a process, when in fact it is the standard signal for daemon configuration reloads and graceful restarts.
Detailed technical explanation
How to think about this question
Under the hood, Apache httpd uses a prefork or worker MPM model where the parent process listens for signals. SIGHUP causes the parent to call ap_graceful_stop() on each child, wait for them to finish current requests, then fork new children with the updated configuration. This mechanism is defined in the Apache source code and is distinct from a full restart (which would use SIGUSR1 for a graceful restart or SIGHUP for a restart that may drop connections in some implementations).
KKey Concepts to Remember
Read the scenario before looking for a memorised answer.
Find the constraint that changes the correct option.
Eliminate answers that are true in general but not in this case.
TExam Day Tips
→Watch for words such as best, first, most likely and least administrative effort.
→Review why wrong options are wrong, not only why the correct option is correct.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
How this comes up in practice
A practitioner preparing for the LPIC-1 exam encounters this exact type of scenario on the job. The correct answer here is not the most general option — it is the best answer for the specific constraint described. Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option. Real exam questions reward reading the full scenario before eliminating options, because the constraint defines which answer fits.
What to study next
Got this wrong? Here's your next step.
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
GNU and Unix Commands — This question tests GNU and Unix Commands — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: The parent process reloads its configuration, and child processes continue serving. — The kill command with SIGHUP (signal 1) sent to the parent httpd process (PID 12345) instructs the parent to reload its configuration files and gracefully restart its child worker processes. This is the standard behavior for Apache httpd and many other daemons: the parent process rereads configuration, spawns new children, and terminates old ones without dropping existing connections.
What should I do if I get this LPIC-1 question wrong?
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
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Question Discussion
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