D386 (latest update 2025-2026) Hardware
and Operating Systems Essentials 100%
Verified Questions & Answers [Grade A] -
WGU
Which set of components make up the central processing unit (CPU)? -correct answer
Arithmetic logic unit and control unit
Which attribute of DRAM must a technician or developer consider ahead of time? -
correct answer Refresh signal
What is the purpose of a computer operating system? -correct answer It functions as
a resource manager.
What is a feature of cloud-based operating systems? -correct answer They are
primarily stateless.
Why do applications designed to work on one operating system not work on a
different operating system? -correct answer Unique system calls
Which requirement should be understood when configuring a RAID 5 system for a
client? -correct answer A minimum of three drives are required.
What is one reason why programmed I/O does not work well when the I/O device is a
hard disk or a graphics display? -correct answer A complete instruction fetch-execute
cycle must be performed to transfer each I/O data word.
Which type of storage devices are characterized by the fastest access times and data
transfer rates? -correct answer Solid-state drives
Which kind of software are Mac OS X and Windows 10 programs? -correct answer
Operating system (OS)
, D386 (latest update 2025-2026) Hardware
and Operating Systems Essentials 100%
Verified Questions & Answers [Grade A] -
WGU
What is the next step to be performed to address storage drive issues after
identifying recent changes and breaking down large problems? -correct answer
Perform a system backup.
A client is utilizing servers, data storage, data backup, and software development
platforms over an internet connection. Which computing approach is being applied? -
correct answer Cloud computing
Which type of memory packaging can support quad, triple, and dual channels? -
correct answer DDR2 SODIMM
A client recently experienced a hard drive failure and lost stored data. The client does
not want to rely on a backup but does want to secure their data. Which RAID
configuration does this client need? -correct answer RAID 1
Which component is responsible for creating and running a virtual machine instance
on a host? -correct answer Hypervisor
What facilitates a guest system's ability to run applications designed for a different
operating system? -correct answer Emulator
Which ability describes a security feature in virtualization? -correct answer Isolating
the operating system when running multiple concurrent VMs
What is a temporary holding area for data and programs? -correct answer RAM
What is a key similarity between RAM and memory cards? -correct answer They are
solid-state.
, D386 (latest update 2025-2026) Hardware
and Operating Systems Essentials 100%
Verified Questions & Answers [Grade A] -
WGU
What is a key reason to implement a RAID 0 disk configuration? -correct answer To
improve overall disk performance
Which operating system allows for its source code to be modified and redistributed? -
correct answer Android
Which processors process in both 32 and 64 bits? -correct answer x86-64 processors
Which size data path do today's DIMMS use? -correct answer 64-bit
Which type of processor memory is located on the processor itself? -correct answer
Level 1 cache
What can a dual in-line memory module (DIMM) use to contain data as well as
amplify a signal before writing the data to a module? -correct answer Registers
Which type of DRAM do modern laptops all use? -correct answer SO-DIMM
Which feature of a solid-state drive's flash memory ensures that the logical block
addressing does not always address the same physical block's drive? -correct answer
Wear leveling
A client has recently purchased a CPU that references the amount of L1 cache in the
list of features. What is this referring to? -correct answer The amount of memory
residing directly on the processor die
Which type of non-functional requirement (NFR) deals with how well a system and its
data are protected against attacks? -correct answer Security
and Operating Systems Essentials 100%
Verified Questions & Answers [Grade A] -
WGU
Which set of components make up the central processing unit (CPU)? -correct answer
Arithmetic logic unit and control unit
Which attribute of DRAM must a technician or developer consider ahead of time? -
correct answer Refresh signal
What is the purpose of a computer operating system? -correct answer It functions as
a resource manager.
What is a feature of cloud-based operating systems? -correct answer They are
primarily stateless.
Why do applications designed to work on one operating system not work on a
different operating system? -correct answer Unique system calls
Which requirement should be understood when configuring a RAID 5 system for a
client? -correct answer A minimum of three drives are required.
What is one reason why programmed I/O does not work well when the I/O device is a
hard disk or a graphics display? -correct answer A complete instruction fetch-execute
cycle must be performed to transfer each I/O data word.
Which type of storage devices are characterized by the fastest access times and data
transfer rates? -correct answer Solid-state drives
Which kind of software are Mac OS X and Windows 10 programs? -correct answer
Operating system (OS)
, D386 (latest update 2025-2026) Hardware
and Operating Systems Essentials 100%
Verified Questions & Answers [Grade A] -
WGU
What is the next step to be performed to address storage drive issues after
identifying recent changes and breaking down large problems? -correct answer
Perform a system backup.
A client is utilizing servers, data storage, data backup, and software development
platforms over an internet connection. Which computing approach is being applied? -
correct answer Cloud computing
Which type of memory packaging can support quad, triple, and dual channels? -
correct answer DDR2 SODIMM
A client recently experienced a hard drive failure and lost stored data. The client does
not want to rely on a backup but does want to secure their data. Which RAID
configuration does this client need? -correct answer RAID 1
Which component is responsible for creating and running a virtual machine instance
on a host? -correct answer Hypervisor
What facilitates a guest system's ability to run applications designed for a different
operating system? -correct answer Emulator
Which ability describes a security feature in virtualization? -correct answer Isolating
the operating system when running multiple concurrent VMs
What is a temporary holding area for data and programs? -correct answer RAM
What is a key similarity between RAM and memory cards? -correct answer They are
solid-state.
, D386 (latest update 2025-2026) Hardware
and Operating Systems Essentials 100%
Verified Questions & Answers [Grade A] -
WGU
What is a key reason to implement a RAID 0 disk configuration? -correct answer To
improve overall disk performance
Which operating system allows for its source code to be modified and redistributed? -
correct answer Android
Which processors process in both 32 and 64 bits? -correct answer x86-64 processors
Which size data path do today's DIMMS use? -correct answer 64-bit
Which type of processor memory is located on the processor itself? -correct answer
Level 1 cache
What can a dual in-line memory module (DIMM) use to contain data as well as
amplify a signal before writing the data to a module? -correct answer Registers
Which type of DRAM do modern laptops all use? -correct answer SO-DIMM
Which feature of a solid-state drive's flash memory ensures that the logical block
addressing does not always address the same physical block's drive? -correct answer
Wear leveling
A client has recently purchased a CPU that references the amount of L1 cache in the
list of features. What is this referring to? -correct answer The amount of memory
residing directly on the processor die
Which type of non-functional requirement (NFR) deals with how well a system and its
data are protected against attacks? -correct answer Security
