Provide swap space for a Linux system.
Describe its central purpose.
Which description is correct?
Swap provides backing storage for less-used memory pages and may also store a hibernation image, depending on the design.
Detailed explanation
Incorrect. EFI applications belong on an EFI System Partition.
Incorrect. Normal user files belong on filesystems such as /home.
Correct. Swap is an auxiliary area for paging less-used memory and related functions.
Incorrect. Kernel modules are stored and loaded from normal filesystem paths.
Try it yourself
An example you can run in a temporary verification environment.
swapon --show --output=NAME,TYPE,SIZE,USED,PRIO 2>/dev/null || trueExpected result
有効なswap領域の一覧。未設定なら空Key points
- Swap backs memory
- It can be a partition or file
- The required size depends on use
Notes
- Environment: Linux / util-linux swapon
- Command output formatting can vary slightly by distribution or tool version.
- Run the example in a temporary directory or process when possible.
Foundation review
Read the scope first
Check whether the command acts on the current shell, a new process, an existing process, or a file.
Verify the observable result
Use the supplied command and compare the output with the expected result.