1.7 Given a scenario, manage software configurations.
Objective 1.7 sits in System Management, which carries 32% of the Linux+ exam. The questions below are original, written from the official objective title above, and each explanation cites the CompTIA page it rests on.
Objective title verbatim from the official objectives. CompTIA exam page ↗
A worked example
Shown solved, with the whole explanation open: this is what every question here carries.
Which kernel interface do the parameters that sysctl reads and writes actually live under?
Correct.
Concept
Runtime kernel parameters are exposed as a file tree, and the tool is a front end over that tree rather than a separate channel.
Why B
The parameters available are those listed under /proc/sys, and procfs is required for sysctl support, so the tool is reading and writing that tree.
Now you: objective 1.7 questions
No account needed. The explanation opens when you answer.
Sample question 1 of 3
A technician needs a kernel parameter changed right now on a running server, without editing any file. Which invocation does it?
Sample question 2 of 3
After a reboot, a parameter set last week with sysctl -w has reverted. The team wants it applied from configuration at boot. Where does sysctl -p read from when no file is named?
Sample question 3 of 3
The same filename exists in /etc/sysctl.d and /usr/lib/sysctl.d with different values. With sysctl --system, which value wins and why?
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Read the sources
These are the official pages the questions above cite. Reading them is studying the objective from the primary source, which is what the explanations point you toward anyway.
More objectives in System Management
- 1.1 1.1 Summarize Linux fundamentals.
- 1.2 1.2 Given a scenario, manage files and directories.
- 1.3 1.3 Given a scenario, configure and manage storage using the appropriate tools.
- 1.4 1.4 Given a scenario, configure and use the appropriate processes and services.
- 1.5 1.5 Given a scenario, use the appropriate networking tools or configuration files.
- 1.6 1.6 Given a scenario, build and install software.