WGU D075 IT Foundations Objective Assessment Exam Prep
Document | 2026/2027 Edition | 250 Verified Questions
WGU D075 IT Foundations Objective Assessment 2026-2027 QUESTIONS AND ANSWERS ALREADY GRADED
A+. 100% Verified Solutions | Updated Per Latest Guidelines | Graded A+
This comprehensive exam preparation document is meticulously crafted for students enrolled in
Western Governors University's D075 IT Foundations course. It contains 250 verified questions and
answers that accurately reflect the content and format of the Objective Assessment for the 2026/2027
academic year. Each question is accompanied by a detailed rationale to reinforce understanding of core
IT concepts. Ideal for professional IT and computer science students seeking a high score on their first
attempt.
Key Features:
Hardware and Networking Fundamentals
Operating Systems and Software
Security and Best Practices
Troubleshooting and Maintenance
Virtualization and Cloud Concepts
Professional and Ethical IT Practices
Updates for 2026:
- Aligned with the latest WGU D075 course of study for 2026/2027
- Incorporated recent industry standards and CompTIA A+ objectives
- Expanded rationales to clarify common misconceptions
- Added new scenario-based questions to mirror the actual assessment
- Verified all answers against current WGU curriculum materials
Abstract:
The WGU D075 IT Foundations Objective Assessment is a critical milestone for students pursuing a degree in IT
or Computer Science. This exam prep document provides a rigorous review of the essential knowledge areas,
including hardware components, networking protocols, operating system functionalities, security principles, and
troubleshooting methodologies. Each of the 250 questions has been carefully selected to represent the breadth and
depth of the actual assessment, with answers and detailed explanations that promote active learning and retention.
The content is organized into logical sections, allowing for targeted study and self-assessment. By engaging with
this material, students will not only master the required competencies but also develop the critical thinking skills
necessary for success in the field. This document serves as an invaluable resource for achieving a distinguished
pass on the D075 Objective Assessment.
Keywords:
WGU D075, IT Foundations, Objective Assessment, Exam Prep, Verified Questions, 2026/2027, Hardware,
Networking
Answer Format:
Each question is presented in a multiple-choice format, followed by the correct answer and a comprehensive
rationale. The rationale explains why the correct answer is right and why the distractors are incorrect, reinforcing
key concepts. This format ensures a deep understanding of the material, not just rote memorization.
Compliance Checklist:
Aligned with WGU D075 course competencies
Updated for the 2026/2027 academic year
Page 1
, Includes 250 verified questions with answers
Rationales provided for every question
Covers all major exam domains
Suitable for self-paced study and review
Content Area Overview:
Content Area Questions Key Topics Weight
Hardware and Network 1-50 CPU, RAM, Storage, Motherboards, 20%
Fundamentals Network Topologies, OSI Model
Operating Systems and Software 51-100 Windows, Linux, macOS, File Systems, 20%
Application Software, Virtualization
Security and Best Practices 101-150 Threats, Vulnerabilities, Authentication, 20%
Encryption, Firewalls, Malware
Troubleshooting and 151-200 Diagnostic Tools, Common Issues, 20%
Maintenance Preventive Maintenance, Safety Procedures
Professional and Ethical IT 201-250 Communication, Documentation, Legal and 20%
Practices Ethical Standards, Environmental Impacts
Page 2
,Q1. A technician is troubleshooting a system where the CPU is reporting an internal
error. Which component is most likely to require replacement?
A. Motherboard
B. CPU
C. RAM
D. Power supply
Correct Answer: B. CPU
Rationale: An internal CPU error typically indicates a fault within the processor itself,
such as a corrupted cache or failed core. Other components like the motherboard or RAM
would present different error patterns.
Why Wrong:
A - A motherboard fault usually causes POST failures or peripheral issues, not a
CPU-specific internal error.
C - RAM errors typically manifest as blue screens, random crashes, or memory test
failures, not CPU internal errors.
D - A power supply issue would cause the system to shut down or fail to boot, not
report a CPU internal error.
Reference: CompTIA A+ Guide to IT Technical Support, 10th Ed., Ch. 4
Q2. A network administrator is designing a network for a large enterprise and needs
to ensure that broadcast traffic is contained within individual departments. Which
subnet mask should be used to achieve this?
A. 255.255.0.0
B. 255.255.255.0
C. 255.255.255.128
D. 255.255.255.192
Correct Answer: B. 255.255.255.0
Rationale: A /24 subnet mask (255.255.255.0) provides a standard size for departmental
networks, limiting broadcast domains to 254 hosts. Larger subnets like /16 would allow
broadcasts across more hosts, and smaller subnets like /25 or /26 might be too restrictive
for typical departments.
Why Wrong:
A - A /16 subnet would create a large broadcast domain, defeating the purpose of
containing broadcast traffic.
C - A /25 subnet allows only 126 hosts, which may be insufficient for some
departments.
D - A /26 subnet allows only 62 hosts, which is often too small for a department.
Reference: CompTIA Network+ Guide to Networks, 9th Ed., Ch. 8
Page 3
, Q3. Which of the following file systems is natively supported by Linux and is designed
for large volumes and journaling?
A. NTFS
B. FAT32
C. ext4
D. HFS+
Correct Answer: C. ext4
Rationale: ext4 is the default file system for many Linux distributions, offering journaling
and support for files up to 16 TB and volumes up to 1 EB. NTFS is for Windows, FAT32 is
older and lacks journaling, and HFS+ is for macOS.
Why Wrong:
A - NTFS is a Windows file system, not natively supported by Linux.
B - FAT32 is older, lacks journaling, and has file size limits.
D - HFS+ is used by macOS, not Linux.
Reference: Linux+ and LPIC-1 Guide to Linux Certification, 5th Ed., Ch. 3
Q4. A security analyst is reviewing firewall rules and notices that a rule allows all
incoming HTTP traffic from any source. Which of the following is the most
significant security concern?
A. The rule is too broad and may expose internal web servers to attacks.
B. The rule should also allow HTTPS traffic.
C. The rule should be placed at the bottom of the list.
D. The rule should use a different protocol.
Correct Answer: A. The rule is too broad and may expose internal web servers to
attacks.
Rationale: Allowing HTTP traffic from any source without restrictions means any external
host can reach internal web servers, increasing the attack surface. HTTPS is a separate
concern, and rule placement or protocol choice are less critical than the unrestricted
access.
Why Wrong:
B - HTTPS is separate and does not mitigate the risk of unrestricted HTTP access.
C - Rule placement is important but the main issue is the lack of source restrictions.
D - Changing the protocol would not address the fundamental security risk.
Reference: CompTIA Security+ Guide to Network Security Fundamentals, 7th Ed., Ch. 5
Q5. A database administrator needs to retrieve the names of all customers who have
made at least one purchase in the last 30 days. Which SQL statement would
accomplish this?
Page 4
Document | 2026/2027 Edition | 250 Verified Questions
WGU D075 IT Foundations Objective Assessment 2026-2027 QUESTIONS AND ANSWERS ALREADY GRADED
A+. 100% Verified Solutions | Updated Per Latest Guidelines | Graded A+
This comprehensive exam preparation document is meticulously crafted for students enrolled in
Western Governors University's D075 IT Foundations course. It contains 250 verified questions and
answers that accurately reflect the content and format of the Objective Assessment for the 2026/2027
academic year. Each question is accompanied by a detailed rationale to reinforce understanding of core
IT concepts. Ideal for professional IT and computer science students seeking a high score on their first
attempt.
Key Features:
Hardware and Networking Fundamentals
Operating Systems and Software
Security and Best Practices
Troubleshooting and Maintenance
Virtualization and Cloud Concepts
Professional and Ethical IT Practices
Updates for 2026:
- Aligned with the latest WGU D075 course of study for 2026/2027
- Incorporated recent industry standards and CompTIA A+ objectives
- Expanded rationales to clarify common misconceptions
- Added new scenario-based questions to mirror the actual assessment
- Verified all answers against current WGU curriculum materials
Abstract:
The WGU D075 IT Foundations Objective Assessment is a critical milestone for students pursuing a degree in IT
or Computer Science. This exam prep document provides a rigorous review of the essential knowledge areas,
including hardware components, networking protocols, operating system functionalities, security principles, and
troubleshooting methodologies. Each of the 250 questions has been carefully selected to represent the breadth and
depth of the actual assessment, with answers and detailed explanations that promote active learning and retention.
The content is organized into logical sections, allowing for targeted study and self-assessment. By engaging with
this material, students will not only master the required competencies but also develop the critical thinking skills
necessary for success in the field. This document serves as an invaluable resource for achieving a distinguished
pass on the D075 Objective Assessment.
Keywords:
WGU D075, IT Foundations, Objective Assessment, Exam Prep, Verified Questions, 2026/2027, Hardware,
Networking
Answer Format:
Each question is presented in a multiple-choice format, followed by the correct answer and a comprehensive
rationale. The rationale explains why the correct answer is right and why the distractors are incorrect, reinforcing
key concepts. This format ensures a deep understanding of the material, not just rote memorization.
Compliance Checklist:
Aligned with WGU D075 course competencies
Updated for the 2026/2027 academic year
Page 1
, Includes 250 verified questions with answers
Rationales provided for every question
Covers all major exam domains
Suitable for self-paced study and review
Content Area Overview:
Content Area Questions Key Topics Weight
Hardware and Network 1-50 CPU, RAM, Storage, Motherboards, 20%
Fundamentals Network Topologies, OSI Model
Operating Systems and Software 51-100 Windows, Linux, macOS, File Systems, 20%
Application Software, Virtualization
Security and Best Practices 101-150 Threats, Vulnerabilities, Authentication, 20%
Encryption, Firewalls, Malware
Troubleshooting and 151-200 Diagnostic Tools, Common Issues, 20%
Maintenance Preventive Maintenance, Safety Procedures
Professional and Ethical IT 201-250 Communication, Documentation, Legal and 20%
Practices Ethical Standards, Environmental Impacts
Page 2
,Q1. A technician is troubleshooting a system where the CPU is reporting an internal
error. Which component is most likely to require replacement?
A. Motherboard
B. CPU
C. RAM
D. Power supply
Correct Answer: B. CPU
Rationale: An internal CPU error typically indicates a fault within the processor itself,
such as a corrupted cache or failed core. Other components like the motherboard or RAM
would present different error patterns.
Why Wrong:
A - A motherboard fault usually causes POST failures or peripheral issues, not a
CPU-specific internal error.
C - RAM errors typically manifest as blue screens, random crashes, or memory test
failures, not CPU internal errors.
D - A power supply issue would cause the system to shut down or fail to boot, not
report a CPU internal error.
Reference: CompTIA A+ Guide to IT Technical Support, 10th Ed., Ch. 4
Q2. A network administrator is designing a network for a large enterprise and needs
to ensure that broadcast traffic is contained within individual departments. Which
subnet mask should be used to achieve this?
A. 255.255.0.0
B. 255.255.255.0
C. 255.255.255.128
D. 255.255.255.192
Correct Answer: B. 255.255.255.0
Rationale: A /24 subnet mask (255.255.255.0) provides a standard size for departmental
networks, limiting broadcast domains to 254 hosts. Larger subnets like /16 would allow
broadcasts across more hosts, and smaller subnets like /25 or /26 might be too restrictive
for typical departments.
Why Wrong:
A - A /16 subnet would create a large broadcast domain, defeating the purpose of
containing broadcast traffic.
C - A /25 subnet allows only 126 hosts, which may be insufficient for some
departments.
D - A /26 subnet allows only 62 hosts, which is often too small for a department.
Reference: CompTIA Network+ Guide to Networks, 9th Ed., Ch. 8
Page 3
, Q3. Which of the following file systems is natively supported by Linux and is designed
for large volumes and journaling?
A. NTFS
B. FAT32
C. ext4
D. HFS+
Correct Answer: C. ext4
Rationale: ext4 is the default file system for many Linux distributions, offering journaling
and support for files up to 16 TB and volumes up to 1 EB. NTFS is for Windows, FAT32 is
older and lacks journaling, and HFS+ is for macOS.
Why Wrong:
A - NTFS is a Windows file system, not natively supported by Linux.
B - FAT32 is older, lacks journaling, and has file size limits.
D - HFS+ is used by macOS, not Linux.
Reference: Linux+ and LPIC-1 Guide to Linux Certification, 5th Ed., Ch. 3
Q4. A security analyst is reviewing firewall rules and notices that a rule allows all
incoming HTTP traffic from any source. Which of the following is the most
significant security concern?
A. The rule is too broad and may expose internal web servers to attacks.
B. The rule should also allow HTTPS traffic.
C. The rule should be placed at the bottom of the list.
D. The rule should use a different protocol.
Correct Answer: A. The rule is too broad and may expose internal web servers to
attacks.
Rationale: Allowing HTTP traffic from any source without restrictions means any external
host can reach internal web servers, increasing the attack surface. HTTPS is a separate
concern, and rule placement or protocol choice are less critical than the unrestricted
access.
Why Wrong:
B - HTTPS is separate and does not mitigate the risk of unrestricted HTTP access.
C - Rule placement is important but the main issue is the lack of source restrictions.
D - Changing the protocol would not address the fundamental security risk.
Reference: CompTIA Security+ Guide to Network Security Fundamentals, 7th Ed., Ch. 5
Q5. A database administrator needs to retrieve the names of all customers who have
made at least one purchase in the last 30 days. Which SQL statement would
accomplish this?
Page 4
