D386 Hardware and Operating System
Essentials Exam 2026 Questions and
Answers
Operating system - Correct answer-system software that acts as a "go-between",
allowing computer hardware and other software to communicate with each other
resource manager - Correct answer-what is the purpose of a computer operating
system?
Operating System (OS) - Correct answer-What kind of software are the Mac OS X
and Windows 10 program?
Android - Correct answer-What operating system is open-sourced and allows its
source code to be modified and redistributed?
Cloud based operating systems - Correct answer-What primarily manages the
operating of one or more virtual machines within a virtualized environment?
primarily stateless - Correct answer-What is a feature of cloud-based operating
systems?
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,System calls - Correct answer-unique set of services provided by operating systems
for use by applications and have to be accounted for by different operating
systems.
Application Programming Interface (API) - Correct answer-A set of software
routines that allows one software system to work with another.
Unique system calls - Correct answer-Why do applications designed to work on
one operating system not work on a different operating system?
single-user systems - Correct answer-multitasking systems, found in laptops and
workstations
Mobile Device Operating Systems - Correct answer-provides single-user and
multitasking at a scaled down level due to power and memory limitations
Mainframe Systems - Correct answer-large, fast, and powerful, used for high
transaction processing and complex computations; used by corporations and
government agencies
network server systems - Correct answer-designed and named for a specific
purpose such as database servers, web servers, and print servers
real-time systems - Correct answer-designed to direct CPU access immediately
when needed or required
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, embedded control systems - Correct answer-specialized operating systems
designed to control asingle piece of equipment or machinery
distributed systems - Correct answer-geared toward allocating process power,
programs, files, and databases to network users.
Application Software - Correct answer-software program that helps you use the
computer to do particular tasks
Drivers - Correct answer-instructs a particular OS on how to access a piece of
hardware
version - Correct answer-particular revision of a piece of software, normally
described by a number that tells you how new the product is in relation to other
versions of the product
source code - Correct answer-actual code that defines how a piece of software
works
open source - Correct answer-software that is created for free use by everyone
closed source - Correct answer-source code that is highly protected and only
available to trusted employees and carefully vetted contractors
©COPYRIGHT 2025, ALL RIGHTS RESERVED 3
Essentials Exam 2026 Questions and
Answers
Operating system - Correct answer-system software that acts as a "go-between",
allowing computer hardware and other software to communicate with each other
resource manager - Correct answer-what is the purpose of a computer operating
system?
Operating System (OS) - Correct answer-What kind of software are the Mac OS X
and Windows 10 program?
Android - Correct answer-What operating system is open-sourced and allows its
source code to be modified and redistributed?
Cloud based operating systems - Correct answer-What primarily manages the
operating of one or more virtual machines within a virtualized environment?
primarily stateless - Correct answer-What is a feature of cloud-based operating
systems?
©COPYRIGHT 2025, ALL RIGHTS RESERVED 1
,System calls - Correct answer-unique set of services provided by operating systems
for use by applications and have to be accounted for by different operating
systems.
Application Programming Interface (API) - Correct answer-A set of software
routines that allows one software system to work with another.
Unique system calls - Correct answer-Why do applications designed to work on
one operating system not work on a different operating system?
single-user systems - Correct answer-multitasking systems, found in laptops and
workstations
Mobile Device Operating Systems - Correct answer-provides single-user and
multitasking at a scaled down level due to power and memory limitations
Mainframe Systems - Correct answer-large, fast, and powerful, used for high
transaction processing and complex computations; used by corporations and
government agencies
network server systems - Correct answer-designed and named for a specific
purpose such as database servers, web servers, and print servers
real-time systems - Correct answer-designed to direct CPU access immediately
when needed or required
©COPYRIGHT 2025, ALL RIGHTS RESERVED 2
, embedded control systems - Correct answer-specialized operating systems
designed to control asingle piece of equipment or machinery
distributed systems - Correct answer-geared toward allocating process power,
programs, files, and databases to network users.
Application Software - Correct answer-software program that helps you use the
computer to do particular tasks
Drivers - Correct answer-instructs a particular OS on how to access a piece of
hardware
version - Correct answer-particular revision of a piece of software, normally
described by a number that tells you how new the product is in relation to other
versions of the product
source code - Correct answer-actual code that defines how a piece of software
works
open source - Correct answer-software that is created for free use by everyone
closed source - Correct answer-source code that is highly protected and only
available to trusted employees and carefully vetted contractors
©COPYRIGHT 2025, ALL RIGHTS RESERVED 3
