WGU C851 Linux Foundations OA Exam Prep
(2026 -2027) | High-Yield Actual Questions,
Bash Commands, Linux Administration,
Detailed Rationales & Comprehensive Study
Guide | 100% Verified and Updated | Latest
Exam and Brand New Version | Just Released
!!!
Which of the following programs are web servers? (Choose two.)
A. Apache HTTPD
B. Postfix
C. Curl
D. Dovecot
E. NGINX
CORRECT ANSWER: AE
What are the differences between hard disk drives and solid state disks?
(Choose two.)
A. Hard disks have a motor and moving parts, solid state disks do not.
B. Hard disks can fail due to physical damage, while solid state disks cannot fail.
C. Solid state disks can store many times as much data as hard disk drives.
D. /dev/sda is a hard disk device while /dev/ssda is a solid state disk.
E. Solid state disks provide faster access to stored data than hard disks.
CORRECT ANSWER: AE
Reverse DNS assigns hostnames to IP addresses. How is the name of the IP
address 198.51.100.165 stored on a DNS server?
A. In the A record for 165.100.51.198.ipv4.arpa.
,B. In the PTR record for 165.100.51.198.in-addr.arpa.
C. In the RNAME record for 198-51-100-165.rev.arpa.
D. In the ARPA record for 165.100.51.198.rev.
E. In the REV record for arpa.in-addr.198.51.100.165.
CORRECT ANSWER: B
Which of the following types of bus can connect hard disk drives with the
motherboard?
A. The RAM bus
B. The NUMA bus
C. The CPU bus
D. The SATA bus
E. The Auto bus
CORRECT ANSWER: D
Members of a team already have experience using Red Hat Enterprise Linux. For
a small hobby project, the team wants to set up a Linux server without paying for
a subscription. Which of the following Linux distributions allows the team
members to apply as much of their Red Hat Enterprise Linux knowledge as
possible?
A. Ubuntu Linux LTS
B. Raspbian
C. Debian GNU/Linux
D. CentOS
E. openSUSE
CORRECT ANSWER: D
What information can be displayed by top?
A. Existing files, ordered by their size.
B. Running processes, ordered by CPU or RAM consumption.
C. User accounts, ordered by the number of logins.
D. User groups, ordered by the number of members.
E. User accounts, ordered by the number of files.
CORRECT ANSWER: B
Which of the following commands can be used to resolve a DNS name to an IP
address?
A. dnsname
B. dns
C. query
,D. host
E. iplookup
CORRECT ANSWER: D
What is true about the dmesg command? (Choose two.)
A. It traces the execution of a command and shows each step the program
carries out.
B. It sends messages to the command lines of all current user sessions.
C. It displays the content of the Linux kernel's ring buffer.
D. It immediately outputs all new messages written to the system journal.
E. It might not display older information because it was overwritten by newer
information.
Correct Answer: CE
CORRECT ANSWER: CE
Which of the following outputs could stem from the command last?
A. 1 ls 2 cat text.txt 3 logout
B. Password for user last changed at Sat Mar 31 16:38:57 EST 2018
C. Last login: Fri Mar 23 10:56:39 2018 from server.example.com
D. EXT4-fs (dm-7): mounted filesystem with ordered data mode. Opts: (null)
E. root tty2 Wed May 17 21:11 - 21:11 (00:00)
CORRECT ANSWER: E
What is the UID of the user root?
A. 1
B. -1
C. 255
D. 65536
E. 0
CORRECT ANSWER: E
Which permissions are set on a regular file once the permissions have been
modified with the command chmod 654 file.txt?
A. drw-r-xr--
B. d""wxr-x--
C. ""wxr-x--x
D. ""rwxrw---x
E. -rw-r-xr--
, CORRECT ANSWER: E
What is true about the owner of a file?
A. Each file is owned by exactly one user and one group.
B. The owner of a file always has full permissions when accessing the file.
C. The user owning a file must be a member of the file's group.
D. When a user is deleted, all files owned by the user disappear.
E. The owner of a file cannot be changed once it is assigned to an owner.
CORRECT ANSWER: A
Which of the following permissions are set on the /tmp/ directory?
A. rwxrwxrwt
B. ------rwX
C. rwSrw-rw-
D. rwxrwS---
E. r-xr-X--t
CORRECT ANSWER: A
Which command adds the new user tux and creates the user's home directory
with default configuration files?
A. defaultuser tux
B. useradd ""m tux
C. usercreate tux
D. useradd ""o default tux
E. passwd ""a tux
CORRECT ANSWER: B
What information is stored in /etc/passwd? (Choose three.)
A. The user's storage space limit
B. The numerical user ID
C. The username
D. The encrypted password
E. The user\s default shell
CORRECT ANSWER: BCE
Which of the following tar options handle compression? (Choose two.)
A. -bz
B. -z
C. -g
(2026 -2027) | High-Yield Actual Questions,
Bash Commands, Linux Administration,
Detailed Rationales & Comprehensive Study
Guide | 100% Verified and Updated | Latest
Exam and Brand New Version | Just Released
!!!
Which of the following programs are web servers? (Choose two.)
A. Apache HTTPD
B. Postfix
C. Curl
D. Dovecot
E. NGINX
CORRECT ANSWER: AE
What are the differences between hard disk drives and solid state disks?
(Choose two.)
A. Hard disks have a motor and moving parts, solid state disks do not.
B. Hard disks can fail due to physical damage, while solid state disks cannot fail.
C. Solid state disks can store many times as much data as hard disk drives.
D. /dev/sda is a hard disk device while /dev/ssda is a solid state disk.
E. Solid state disks provide faster access to stored data than hard disks.
CORRECT ANSWER: AE
Reverse DNS assigns hostnames to IP addresses. How is the name of the IP
address 198.51.100.165 stored on a DNS server?
A. In the A record for 165.100.51.198.ipv4.arpa.
,B. In the PTR record for 165.100.51.198.in-addr.arpa.
C. In the RNAME record for 198-51-100-165.rev.arpa.
D. In the ARPA record for 165.100.51.198.rev.
E. In the REV record for arpa.in-addr.198.51.100.165.
CORRECT ANSWER: B
Which of the following types of bus can connect hard disk drives with the
motherboard?
A. The RAM bus
B. The NUMA bus
C. The CPU bus
D. The SATA bus
E. The Auto bus
CORRECT ANSWER: D
Members of a team already have experience using Red Hat Enterprise Linux. For
a small hobby project, the team wants to set up a Linux server without paying for
a subscription. Which of the following Linux distributions allows the team
members to apply as much of their Red Hat Enterprise Linux knowledge as
possible?
A. Ubuntu Linux LTS
B. Raspbian
C. Debian GNU/Linux
D. CentOS
E. openSUSE
CORRECT ANSWER: D
What information can be displayed by top?
A. Existing files, ordered by their size.
B. Running processes, ordered by CPU or RAM consumption.
C. User accounts, ordered by the number of logins.
D. User groups, ordered by the number of members.
E. User accounts, ordered by the number of files.
CORRECT ANSWER: B
Which of the following commands can be used to resolve a DNS name to an IP
address?
A. dnsname
B. dns
C. query
,D. host
E. iplookup
CORRECT ANSWER: D
What is true about the dmesg command? (Choose two.)
A. It traces the execution of a command and shows each step the program
carries out.
B. It sends messages to the command lines of all current user sessions.
C. It displays the content of the Linux kernel's ring buffer.
D. It immediately outputs all new messages written to the system journal.
E. It might not display older information because it was overwritten by newer
information.
Correct Answer: CE
CORRECT ANSWER: CE
Which of the following outputs could stem from the command last?
A. 1 ls 2 cat text.txt 3 logout
B. Password for user last changed at Sat Mar 31 16:38:57 EST 2018
C. Last login: Fri Mar 23 10:56:39 2018 from server.example.com
D. EXT4-fs (dm-7): mounted filesystem with ordered data mode. Opts: (null)
E. root tty2 Wed May 17 21:11 - 21:11 (00:00)
CORRECT ANSWER: E
What is the UID of the user root?
A. 1
B. -1
C. 255
D. 65536
E. 0
CORRECT ANSWER: E
Which permissions are set on a regular file once the permissions have been
modified with the command chmod 654 file.txt?
A. drw-r-xr--
B. d""wxr-x--
C. ""wxr-x--x
D. ""rwxrw---x
E. -rw-r-xr--
, CORRECT ANSWER: E
What is true about the owner of a file?
A. Each file is owned by exactly one user and one group.
B. The owner of a file always has full permissions when accessing the file.
C. The user owning a file must be a member of the file's group.
D. When a user is deleted, all files owned by the user disappear.
E. The owner of a file cannot be changed once it is assigned to an owner.
CORRECT ANSWER: A
Which of the following permissions are set on the /tmp/ directory?
A. rwxrwxrwt
B. ------rwX
C. rwSrw-rw-
D. rwxrwS---
E. r-xr-X--t
CORRECT ANSWER: A
Which command adds the new user tux and creates the user's home directory
with default configuration files?
A. defaultuser tux
B. useradd ""m tux
C. usercreate tux
D. useradd ""o default tux
E. passwd ""a tux
CORRECT ANSWER: B
What information is stored in /etc/passwd? (Choose three.)
A. The user's storage space limit
B. The numerical user ID
C. The username
D. The encrypted password
E. The user\s default shell
CORRECT ANSWER: BCE
Which of the following tar options handle compression? (Choose two.)
A. -bz
B. -z
C. -g
