WGU D386 Hardware and Operating Systems
Essentials – Objective Assessment, (2025–
2026) Complete Exam Questions with Verified
Correct Answers
Introduction:
This document contains a comprehensive collection of exam-
style questions and verified correct answers covering the full
scope of WGU D386 Hardware and Operating Systems
Essentials. Topics include computer hardware components,
operating system concepts, memory and storage technologies,
networking fundamentals, virtualization, security, and cloud
computing, aligned with the Objective Assessment for the
2025–2026 academic year. The material is suitable for final
exam preparation and concept review, offering clear
definitions and explanations across all major domains of the
course.
Exam Questions and Answers
Active Cooling -Answer:-what involves forcing some kind of
cooling medium (air or water) around the RAM chips
themselves or around their heat sinks?
,Hard Disk Drive -Answer:-a computer device that reads,
writes, and stores digital data
Host Bus Adapter (HBA) -Answer:-A component that connects a
host to other devices in a storage network
Solid-state drive -Answer:-Data storage devices that serve the
same purpose as a hard drive and store data in memory chips.
No internal moving parts and utilizes flash memory
technology.
Hybrid drives -Answer:-a combination of a mechanical hard
drive and an SSD drive
PATA Drives or integrated drive electronics (IDE) drives -
Answer:-A standard for connecting hard drives into computer
,systems; uses thick cables to connect to transfer data and are
slow compared to other drives.
SATA Drive -Answer:-type of bus interface that we utilize for
connecting various secondary storage devices. More advanced
version of PATA
Optical Drives -Answer:-Disc drives that use a laser to store
and read data
Primarily used for archiving, backup, filing, and program
distribution as an alternative to the standard magnetic disk
drive.
trimming -Answer:-process of moving blocks on solid- state
drives to reduce fragmentation
SMART or self-monitoring analysis and reporting technology -
Answer:-is used to predict when a drive is likely to fail
, bridges -Answer:-Layer 2 devices that filter traffic between
segments based on Media Access Control (MAC) addresses
firewall -Answer:-a part of a computer system or network that
is designed to block unauthorized access while permitting
outward communication
virtualization -Answer:-creates multiple "virtual" machines on
a single computing device
Hypervisor -Answer:-Software that enables a single computer
to run multiple operating systems simultaneously.
Responsible for creating and running a virtual machine
instance on a host.
Essentials – Objective Assessment, (2025–
2026) Complete Exam Questions with Verified
Correct Answers
Introduction:
This document contains a comprehensive collection of exam-
style questions and verified correct answers covering the full
scope of WGU D386 Hardware and Operating Systems
Essentials. Topics include computer hardware components,
operating system concepts, memory and storage technologies,
networking fundamentals, virtualization, security, and cloud
computing, aligned with the Objective Assessment for the
2025–2026 academic year. The material is suitable for final
exam preparation and concept review, offering clear
definitions and explanations across all major domains of the
course.
Exam Questions and Answers
Active Cooling -Answer:-what involves forcing some kind of
cooling medium (air or water) around the RAM chips
themselves or around their heat sinks?
,Hard Disk Drive -Answer:-a computer device that reads,
writes, and stores digital data
Host Bus Adapter (HBA) -Answer:-A component that connects a
host to other devices in a storage network
Solid-state drive -Answer:-Data storage devices that serve the
same purpose as a hard drive and store data in memory chips.
No internal moving parts and utilizes flash memory
technology.
Hybrid drives -Answer:-a combination of a mechanical hard
drive and an SSD drive
PATA Drives or integrated drive electronics (IDE) drives -
Answer:-A standard for connecting hard drives into computer
,systems; uses thick cables to connect to transfer data and are
slow compared to other drives.
SATA Drive -Answer:-type of bus interface that we utilize for
connecting various secondary storage devices. More advanced
version of PATA
Optical Drives -Answer:-Disc drives that use a laser to store
and read data
Primarily used for archiving, backup, filing, and program
distribution as an alternative to the standard magnetic disk
drive.
trimming -Answer:-process of moving blocks on solid- state
drives to reduce fragmentation
SMART or self-monitoring analysis and reporting technology -
Answer:-is used to predict when a drive is likely to fail
, bridges -Answer:-Layer 2 devices that filter traffic between
segments based on Media Access Control (MAC) addresses
firewall -Answer:-a part of a computer system or network that
is designed to block unauthorized access while permitting
outward communication
virtualization -Answer:-creates multiple "virtual" machines on
a single computing device
Hypervisor -Answer:-Software that enables a single computer
to run multiple operating systems simultaneously.
Responsible for creating and running a virtual machine
instance on a host.
