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XK0-006 Practice Question: In the exhibit, what does 'Tasks: 11 (limit:…
Exhibit
Refer to the exhibit.
[root@server ~]# systemctl status httpd
● httpd.service - The Apache HTTP Server
Loaded: loaded (/usr/lib/systemd/system/httpd.service; enabled; vendor preset: disabled)
Active: active (running) since Mon 2023-01-23 10:15:00 EST; 2h 15min ago
Docs: man:httpd.service(8)
Main PID: 1234 (httpd)
Tasks: 11 (limit: 512)
Memory: 24.5M
CGroup: /system.slice/httpd.service
├─1234 /usr/sbin/httpd -DFOREGROUND
├─1245 /usr/sbin/httpd -DFOREGROUND
├─1246 /usr/sbin/httpd -DFOREGROUND
└─1247 /usr/sbin/httpd -DFOREGROUNDIn the exhibit, what does 'Tasks: 11 (limit: 512)' indicate?
⚠ Common exam trap
Test-takers frequently confuse the 'Tasks' count with memory usage or runtime, or assume it refers only to threads without recognizing the cgroup pids controller as the mechanism enforcing the limit.
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
✓
The cgroup pids controller is limiting the number of processes/threads.
The output shown is from the `systemd-cgls` command, which displays cgroup (control group) information. The line `Tasks: 11 (limit: 512)` indicates that the cgroup's pids controller is currently tracking 11 processes/threads within that cgroup and has a configured limit of 512. This limit restricts the total number of processes and threads that can be created in that cgroup, preventing fork bombs or resource exhaustion.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
The process is using 512 MB of memory.
Why it's wrong here
Memory is shown separately; limit is not memory.
- ✗
The service has been running for 512 seconds.
Why it's wrong here
Uptime is shown in the Active line.
- ✓
The cgroup pids controller is limiting the number of processes/threads.
Why this is correct
The limit is enforced by the pids cgroup controller.
- ✗
The number of threads is limited to 512.
Why it's wrong here
It shows tasks, which can be processes or threads; the limit is on total tasks.
Go deeper
Related to this question
Learn chapter
User and Group Administration
Key term
systemd
systemd is a system and service manager for Linux operating systems that initializes and manages processes, services, and system resources after the kernel boots.
Key term
Output
In IT service management, output is the result or deliverable produced by a process, system, or component, such as data, reports, or services delivered to a customer.
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Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
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