WGU D386-HARDWARE AND OPERATING SYSTEMS
ESSENTIALS EXAM – QUESTIONS AND ANSWERS |
VERIFIED AND WELL DETAILED ANSWERS | PLUS
RATIONALES | GUARANTEED PASS | LATEST EXAM
UPDATE | EXAM PREP | STUDY GUIDE | PRACTICE TEST
1. A technician is troubleshooting a desktop computer that fails to boot and produces a
continuous series of short beeps upon power-up. What is the most likely cause of this
hardware error?
A. A failed or unseated random access memory module
B. A corrupted master boot record on the primary storage drive
C. An overheating central processing unit due to a faulty fan
D. A missing operating system kernel file in the root directory
A continuous short beep pattern during the power-on self-test typically indicates a power
supply failure or a motherboard memory refresh failure, which is most commonly caused by
unseated or defective RAM modules.
2. Which of the following storage technologies utilizes non-volatile memory chips directly
attached to a high-speed peripheral component interconnect express bus to achieve
maximum throughput?
A. Serial Advanced Technology Attachment solid-state drives
B. Non-Volatile Memory Express solid-state drives
C. Serial Attached Small Computer System Interface hard disk drives
D. Parallel Advanced Technology Attachment mechanical drives
Non-Volatile Memory Express is a communications interface and protocol designed
specifically for flash storage attached directly through the peripheral component interconnect
express bus, bypassing traditional legacy storage controllers to maximize throughput and
minimize latency.
3. An IT administrator needs to configure a redundant storage array that provides fault
tolerance through data mirroring without parity calculation overhead, requiring a
minimum of two drives. Which RAID level should the administrator implement?
A. RAID 0
B. RAID 1
C. RAID 5
D. RAID 10
,RAID 1 implements disk mirroring, writing identical data to two or more drives
simultaneously to provide complete redundancy and fault tolerance without the computational
overhead of parity generation.
4. A user reports that their workstation monitor displays a distorted image with incorrect
color representation and vertical lines running across the screen. After verifying the video
cable is securely connected, what should the technician check next?
A. The local area network adapter configuration settings
B. The power supply unit DC output voltage tolerances
C. The graphics processing unit driver installation and hardware seating
D. The default gateway address in the network configuration properties
Distorted video output, incorrect colors, and visual artifacts are classic symptoms of a failing
graphics card, improper driver installation, or an unseated graphics processing unit expansion
card.
5. Which operating system utility allows an administrator to monitor real-time system
performance metrics including processor utilization, memory consumption, disk activity,
and network bandwidth usage?
A. Disk Management
B. Task Manager
C. Device Manager
D. Event Viewer
Task Manager is a built-in operating system monitoring tool that provides real-time
information about computer performance and running applications, including detailed
metrics for CPU, memory, disk, and network utilization.
6. A technician is assembling a new desktop computer and wants to ensure optimal thermal
transfer between the central processing unit integrated heat spreader and the heatsink
base. What material must be applied during this installation process?
A. Dielectric grease
B. Thermal paste
C. Conductive solder
D. Silicone sealant
Thermal paste is a specialized compound applied between the CPU integrated heat spreader
and the heatsink to fill microscopic imperfections, thereby eliminating air pockets and
maximizing thermal conductivity.
7. Which component of a modern computer motherboard acts as the primary bridge
connecting the central processing unit to high-speed system memory and the primary
graphics expansion slot?
, A. Southbridge chipset
B. Input-Output controller hub
C. Platform Controller Hub
D. Northbridge integrated memory controller
Historically, the Northbridge handled high-speed communications between the CPU, RAM,
and PCIe graphics slots. In modern architectures, these functions are integrated directly onto
the CPU die, but the foundational concept remains tied to the memory controller architecture.
8. An administrator is configuring a network printer for a small office environment. Which
network protocol operates on Transmission Control Protocol port 9100 and is commonly
used for direct raw printing services?
A. Server Message Block
B. Internet Printing Protocol
C. Hewlett-Packard JetDirect
D. Simple Network Management Protocol
Port 9100 is standard for raw TCP printing, often referred to as JetDirect or AppSocket
printing, which transmits print jobs directly to the printer without requiring complex queuing
protocols.
9. A user attempts to launch a legacy software application on a modern 64-bit operating
system, but the application fails to execute due to architecture incompatibilities. Which
subsystem or feature should the administrator utilize to run this application?
A. Windows Subsystem for Linux
B. Compatibility Mode
C. Virtual Machine Platform
D. Hyper-V Manager
Compatibility Mode allows administrators to configure execution parameters that emulate
older operating system environments, enabling legacy applications to run successfully on
modern platforms.
10. Which type of random access memory module is physically designed for use in modern
laptop computers and compact form-factor systems due to its smaller physical footprint
compared to standard desktop memory?
A. Dual In-line Memory Module
B. Small Outline Dual In-line Memory Module
C. Single In-line Memory Module
D. Rambus In-line Memory Module
Small Outline Dual In-line Memory Modules are significantly smaller than standard DIMMs,
making them the industry standard for laptops, notebooks, and small form-factor systems.
ESSENTIALS EXAM – QUESTIONS AND ANSWERS |
VERIFIED AND WELL DETAILED ANSWERS | PLUS
RATIONALES | GUARANTEED PASS | LATEST EXAM
UPDATE | EXAM PREP | STUDY GUIDE | PRACTICE TEST
1. A technician is troubleshooting a desktop computer that fails to boot and produces a
continuous series of short beeps upon power-up. What is the most likely cause of this
hardware error?
A. A failed or unseated random access memory module
B. A corrupted master boot record on the primary storage drive
C. An overheating central processing unit due to a faulty fan
D. A missing operating system kernel file in the root directory
A continuous short beep pattern during the power-on self-test typically indicates a power
supply failure or a motherboard memory refresh failure, which is most commonly caused by
unseated or defective RAM modules.
2. Which of the following storage technologies utilizes non-volatile memory chips directly
attached to a high-speed peripheral component interconnect express bus to achieve
maximum throughput?
A. Serial Advanced Technology Attachment solid-state drives
B. Non-Volatile Memory Express solid-state drives
C. Serial Attached Small Computer System Interface hard disk drives
D. Parallel Advanced Technology Attachment mechanical drives
Non-Volatile Memory Express is a communications interface and protocol designed
specifically for flash storage attached directly through the peripheral component interconnect
express bus, bypassing traditional legacy storage controllers to maximize throughput and
minimize latency.
3. An IT administrator needs to configure a redundant storage array that provides fault
tolerance through data mirroring without parity calculation overhead, requiring a
minimum of two drives. Which RAID level should the administrator implement?
A. RAID 0
B. RAID 1
C. RAID 5
D. RAID 10
,RAID 1 implements disk mirroring, writing identical data to two or more drives
simultaneously to provide complete redundancy and fault tolerance without the computational
overhead of parity generation.
4. A user reports that their workstation monitor displays a distorted image with incorrect
color representation and vertical lines running across the screen. After verifying the video
cable is securely connected, what should the technician check next?
A. The local area network adapter configuration settings
B. The power supply unit DC output voltage tolerances
C. The graphics processing unit driver installation and hardware seating
D. The default gateway address in the network configuration properties
Distorted video output, incorrect colors, and visual artifacts are classic symptoms of a failing
graphics card, improper driver installation, or an unseated graphics processing unit expansion
card.
5. Which operating system utility allows an administrator to monitor real-time system
performance metrics including processor utilization, memory consumption, disk activity,
and network bandwidth usage?
A. Disk Management
B. Task Manager
C. Device Manager
D. Event Viewer
Task Manager is a built-in operating system monitoring tool that provides real-time
information about computer performance and running applications, including detailed
metrics for CPU, memory, disk, and network utilization.
6. A technician is assembling a new desktop computer and wants to ensure optimal thermal
transfer between the central processing unit integrated heat spreader and the heatsink
base. What material must be applied during this installation process?
A. Dielectric grease
B. Thermal paste
C. Conductive solder
D. Silicone sealant
Thermal paste is a specialized compound applied between the CPU integrated heat spreader
and the heatsink to fill microscopic imperfections, thereby eliminating air pockets and
maximizing thermal conductivity.
7. Which component of a modern computer motherboard acts as the primary bridge
connecting the central processing unit to high-speed system memory and the primary
graphics expansion slot?
, A. Southbridge chipset
B. Input-Output controller hub
C. Platform Controller Hub
D. Northbridge integrated memory controller
Historically, the Northbridge handled high-speed communications between the CPU, RAM,
and PCIe graphics slots. In modern architectures, these functions are integrated directly onto
the CPU die, but the foundational concept remains tied to the memory controller architecture.
8. An administrator is configuring a network printer for a small office environment. Which
network protocol operates on Transmission Control Protocol port 9100 and is commonly
used for direct raw printing services?
A. Server Message Block
B. Internet Printing Protocol
C. Hewlett-Packard JetDirect
D. Simple Network Management Protocol
Port 9100 is standard for raw TCP printing, often referred to as JetDirect or AppSocket
printing, which transmits print jobs directly to the printer without requiring complex queuing
protocols.
9. A user attempts to launch a legacy software application on a modern 64-bit operating
system, but the application fails to execute due to architecture incompatibilities. Which
subsystem or feature should the administrator utilize to run this application?
A. Windows Subsystem for Linux
B. Compatibility Mode
C. Virtual Machine Platform
D. Hyper-V Manager
Compatibility Mode allows administrators to configure execution parameters that emulate
older operating system environments, enabling legacy applications to run successfully on
modern platforms.
10. Which type of random access memory module is physically designed for use in modern
laptop computers and compact form-factor systems due to its smaller physical footprint
compared to standard desktop memory?
A. Dual In-line Memory Module
B. Small Outline Dual In-line Memory Module
C. Single In-line Memory Module
D. Rambus In-line Memory Module
Small Outline Dual In-line Memory Modules are significantly smaller than standard DIMMs,
making them the industry standard for laptops, notebooks, and small form-factor systems.
