010-160 Linux System Architecture & Installation 3 — Questions and Answers
Question 1: Which runlevel in traditional SysV init corresponds to multi-user mode with networking but without a graphical interface?
- 3 (Correct answer)
- 1
- 5
- 2
Correct answer: 3
Runlevel 3 is the standard multi-user networked text mode; runlevel 5 adds the graphical display manager.
Question 2: What systemd target is roughly equivalent to SysV runlevel 5 (graphical multi-user)?
- graphical.target (Correct answer)
- multi-user.target
- runlevel5.target
- desktop.target
Correct answer: graphical.target
graphical.target starts a full graphical environment and is the systemd equivalent of runlevel 5.
Question 3: Which command lists all PCI devices recognized by the Linux kernel?
- lspci (Correct answer)
- lsusb
- lsblk
- lshw
Correct answer: lspci
lspci enumerates all PCI and PCI-Express devices visible to the kernel.
Question 4: What is the role of udev in a Linux system?
- Dynamically manage device nodes in /dev based on kernel events (Correct answer)
- Load kernel modules at boot time from /etc/modules
- Mount filesystems listed in /etc/fstab
- Configure network interfaces during boot
Correct answer: Dynamically manage device nodes in /dev based on kernel events
udev listens for kernel uevent notifications and creates, removes, or renames device nodes in /dev accordingly.
Question 5: During installation, which tool is commonly used to partition disks in a text-based Linux environment?
- fdisk (Correct answer)
- mkfs
- fsck
- parted only
Correct answer: fdisk
fdisk is the classic text-based disk partitioning tool widely available in Linux installation environments.
Question 6: Which file contains kernel boot parameters that were passed at startup?
- /proc/cmdline (Correct answer)
- /boot/cmdline
- /etc/kernel/params
- /sys/kernel/cmdline
Correct answer: /proc/cmdline
/proc/cmdline shows the exact command line that the bootloader passed to the running kernel.
Question 7: What does 'LVM' stand for and what problem does it solve?
- Logical Volume Manager — allows flexible resizing and management of disk partitions (Correct answer)
- Linux Volume Mounter — automatically mounts volumes at boot
- Large Volume Module — supports disks over 2 TB
- Layered Volume Manager — provides RAID redundancy
Correct answer: Logical Volume Manager — allows flexible resizing and management of disk partitions
LVM (Logical Volume Manager) abstracts physical storage into logical volumes that can be resized and managed without repartitioning.
010-160 Linux System Architecture & Installation 3
Which runlevel in traditional SysV init corresponds to multi-user mode with networking but without a graphical interface?