WGU D281 Linux Foundations Exam 200Questions with Correct Verified Answers (GRADED A+)

WGU D281 Linux Foundations
Exam 200Questions with Correct
Verified Answers (GRADED A+)


Questions 1-10: System Architecture
Q1. Which component of the Linux operating system
directly manages hardware resources?

 A) Shell
 B) Kernel
 C) Init system
 D) User space
 Answer: B) Kernel
 Rationale: The kernel is the core of Linux that interacts
directly with hardware, managing memory, processes, and
device drivers .
Q2. What is the first process started by the Linux
kernel?

 A) init (PID 1)
 B) systemd (PID 1)
 C) Both A and B (init or systemd depending on
distribution)

, D) bash
 Answer: C) Both A and B (init or systemd depending on
distribution)
 Rationale: PID 1 is the first user-space process started by
the kernel. Traditional SysV systems use init, while
modern systems use systemd .
Q3. Which command displays the current kernel
version?

 A) uname -r
 B) uname -a
 C) cat /proc/version
 D) All of the above
 Answer: D) All of the above
 Rationale: uname -r shows the kernel release, uname -
a shows all system information, and /proc/version also
displays kernel version information .

Q4. Which directory contains device files (e.g.,
/dev/sda, /dev/tty)?

 A) /dev
 B) /proc
 C) /sys
 D) /etc
 Answer: A) /dev

, Rationale: /dev contains device special files that represent
hardware components, providing the interface for
programs to communicate with hardware .

Q5. Which directory is a virtual filesystem providing
process and system information in real-time?

 A) /proc
 B) /run
 C) /dev/shm
 D) /usr
 Answer: A) /proc
 Rationale: /proc is a virtual filesystem (procfs) that
contains runtime system information, including CPU,
memory, and process data .
Q6. Which command displays CPU information?

 A) cat /proc/cpuinfo
 B) lscpu
 C) nproc
 D) All of the above
 Answer: D) All of the above
 Rationale: cat /proc/cpuinfo displays detailed CPU
information, lscpu formats it in a readable table,
and nproc shows the number of processing cores .
Q7. Which command displays memory information?

,  A) free -h
 B) cat /proc/meminfo
 C) vmstat
 D) All of the above
 Answer: D) All of the above
 Rationale: free and vmstat display formatted memory
information, while /proc/meminfo contains the raw data .
Q8. Which system call is used to create a new process
in Linux?

 A) fork()
 B) exec()
 C) clone()
 D) wait()
 Answer: A) fork()
 Rationale: The fork() system call creates a new process
by duplicating the calling process .

Q9. Which directory stores kernel modules?

 A) /lib/modules/$(uname -r)
 B) /usr/src/linux
 C) /boot/modules
 D) /etc/modules
 Answer: A) /lib/modules/$(uname -r)