LINUX ESSENTIALS EXAM 4 COMPREHENSIVE
SCRIPT 2026 QUESTIONS AND SOLUTIONS
◉ 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.. Answer: A. Hard disks have a motor and moving parts, solid
state disks do not.
◉ 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.. Answer: B. In
the PTR record for 165.100.51.198.in-ad
◉ 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. Answer: D. The SATA bus
◉ 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. Answer: D. CentOS
◉ 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.. Answer: B.
Running processes, ordered by CPU or RAM consump
◉ 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. Answer: D. host
, ◉ Which of the following outputs comes from the command free?.
Answer: E
◉ 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 kernelג€™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.. Answer: C. It displays the content of the
Linux kernelג€™s ring buffer.
E. It might not display older information because it was overwritten
by newer information.
◉ 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
SCRIPT 2026 QUESTIONS AND SOLUTIONS
◉ 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.. Answer: A. Hard disks have a motor and moving parts, solid
state disks do not.
◉ 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.. Answer: B. In
the PTR record for 165.100.51.198.in-ad
◉ 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. Answer: D. The SATA bus
◉ 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. Answer: D. CentOS
◉ 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.. Answer: B.
Running processes, ordered by CPU or RAM consump
◉ 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. Answer: D. host
, ◉ Which of the following outputs comes from the command free?.
Answer: E
◉ 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 kernelג€™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.. Answer: C. It displays the content of the
Linux kernelג€™s ring buffer.
E. It might not display older information because it was overwritten
by newer information.
◉ 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
