WGU C851 (Linux Foundations) 2026 Updated Complete Exam Study Guide

WGU C851 (Linux Foundations) WGU C851 (Linux Foundations) 2/18/2026




Which of the following programs are web AE
servers? (Choose two.)
A. Apache HTTPD
B. Postfix
C. Curl
D. Dovecot
E. NGINX


What are the differences between hard disk AE
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.




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,WGU C851 (Linux Foundations) WGU C851 (Linux Foundations) 2/18/2026




Reverse DNS assigns hostnames to IP addresses. B
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.


Which of the following types of bus can connect D
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




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,WGU C851 (Linux Foundations) WGU C851 (Linux Foundations) 2/18/2026




Members of a team already have experience D
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


What information can be displayed by top? B
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.




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, WGU C851 (Linux Foundations) WGU C851 (Linux Foundations) 2/18/2026




Which of the following commands can be used D
to resolve a DNS name to an IP address?
A. dnsname
B. dns
C. query
D. host
E. iplookup


Which of the following outputs comes from the total used free shared buff/cached available
command free?


total used free shared buff/cached available




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