WGU NETWORK AND SECURITY
FOUNDATIONS OBJECTIVE
ASSESSMENT 2026
150 Questions with Answers and Detailed Rationales
100 PERCENT GUARANTEED PASS
INSTANT DOWNLOAD ANSWERS INCLUDED
IMPORTANCE OF THIS DOCUMENT
This comprehensive examination preparation guide has been meticulously developed to help you succeed in the
WGU NETWORK AND SECURITY FOUNDATIONS OBJECTIVE ASSESSMENT 2026. It contains 150 carefully
selected questions that reflect the most current exam content and testing strategies. Each question is
accompanied by a correct answer and a detailed rationale that explains the underlying pathophysiology,
pharmacology, or clinical reasoning.
Self-Assessment – Test your knowledge and Exam Preparation – Familiarize yourself with the
identify areas requiring further question format and content
study areas
Concept Reinforcement – Deepen your Confidence Building – Develop test-taking
understanding through strategies and reduce
evidence-based exam anxiety
rationales
Time Management – Practice answering
questions under simulated
exam conditions
Review Summary 150 Questions
Foundations - Application - WGU Network AND Security Foundations Objective Assessment 2026 Network
AND Security Foundations Undergraduate Junior/senior Level
All answers with rationales
,Table of Contents
Content Area Questions Key Topics
Network Fundamentals 1-25 Network, Needs, Addresses, Access, Control
Network Infrastructure AND 26-50 Network, Security, Packets, Server, Traffic
Topologies
Network Protocols AND 51-75 Network, Addresses, Layer, Protocol, Operates
Standards
Network Security 76-100 Security, Network, Certificate, Wants, Firewall
Fundamentals
Threats Vulnerabilities AND 101-125 Network, Security, Addresses, Protocol, Subnet
Attacks
Security Technologies AND 126-150 Network, Wants, Address, Firewall, Directly
Tools
TOTAL 150 All questions include answers and detailed rationales
,Section A - Network Fundamentals
Q1.
Which OSI layer is responsible for establishing, managing, and terminating sessions
between applications, including dialogue control and synchronization?
A. Transport Layer B. Session Layer
C. Presentation Layer D. Application Layer
Correct: B - Session Layer
Rationale:The Session Layer (Layer 5) establishes, manages, and terminates sessions, and
provides dialogue control and synchronization. The Transport Layer handles end-to-end
connections and reliability, while the Presentation Layer deals with data translation and
encryption. The Application Layer provides network services to user applications.
Why the other answers are wrong:
A. The Transport Layer ensures reliable data transfer and flow control, not session
management.
C. The Presentation Layer handles data format translation, encryption, and compression, not
session establishment.
D. The Application Layer provides user interfaces and network services, but does not manage
sessions.
Reference: WGU Network and Security Foundations, Module 1: OSI Model, Section 1.3
Q2.
An administrator needs to assign IPv4 addresses to hosts on a subnet that requires at
least 50 usable addresses while minimizing waste. Which subnet mask should be used?
A. /26 B. /27
C. /25 D. /28
Correct: A - /26
Rationale:A /26 subnet mask provides 64 total addresses, with 62 usable host addresses (64
minus network and broadcast), which meets the requirement of at least 50 usable addresses
with minimal waste. A /27 provides only 30 usable addresses, insufficient. A /25 provides 126
usable addresses, which is more than needed and wastes addresses. A /28 provides only 14
usable addresses.
Why the other answers are wrong:
B. A /27 provides only 30 usable addresses, which is less than the required 50.
C. A /25 provides 126 usable addresses, which is more than necessary and wastes address
space.
Page 3
, Section A - Network Fundamentals
D. A /28 provides only 14 usable addresses, far too few.
Reference: WGU Network and Security Foundations, Module 2: IP Addressing, Section 2.2
Q3.
Which protocol is used by a client to securely retrieve email from a mail server while
keeping messages synchronized across multiple devices?
A. POP3 B. IMAP
C. SMTP D. HTTP
Correct: B - IMAP
Rationale:IMAP (Internet Message Access Protocol) keeps email messages on the server
and synchronizes them across multiple devices, allowing users to access the same mailbox
from different locations. POP3 downloads messages and typically removes them from the
server, which does not support synchronization. SMTP is for sending email, and HTTP is for
web traffic.
Why the other answers are wrong:
A. POP3 downloads messages to a single device and often deletes them from the server,
preventing synchronization.
C. SMTP is used for sending email, not retrieving it.
D. HTTP is used for web browsing, not email retrieval.
Reference: WGU Network and Security Foundations, Module 3: Application Layer Protocols, Section 3.4
Q4.
A network engineer is configuring a switch and needs to prevent loops while allowing
redundancy. Which protocol should be enabled?
A. VLAN Trunking Protocol (VTP) B. Spanning Tree Protocol (STP)
C. Link Aggregation Control Protocol D. Dynamic Host Configuration Protocol
(LACP) (DHCP)
Correct: B - Spanning Tree Protocol (STP)
Rationale:Spanning Tree Protocol (STP) prevents loops in a switched network by blocking
redundant paths, while still allowing redundancy if a primary link fails. VTP manages VLAN
configurations, LACP bundles links for increased bandwidth, and DHCP assigns IP
addresses.
Why the other answers are wrong:
A. VTP propagates VLAN information but does not prevent loops.
C. LACP combines multiple physical links into one logical link, but does not prevent loops.
D. DHCP dynamically assigns IP addresses and does not address loop prevention.
Reference: WGU Network and Security Foundations, Module 4: Switching and VLANs, Section 4.3
Page 4
FOUNDATIONS OBJECTIVE
ASSESSMENT 2026
150 Questions with Answers and Detailed Rationales
100 PERCENT GUARANTEED PASS
INSTANT DOWNLOAD ANSWERS INCLUDED
IMPORTANCE OF THIS DOCUMENT
This comprehensive examination preparation guide has been meticulously developed to help you succeed in the
WGU NETWORK AND SECURITY FOUNDATIONS OBJECTIVE ASSESSMENT 2026. It contains 150 carefully
selected questions that reflect the most current exam content and testing strategies. Each question is
accompanied by a correct answer and a detailed rationale that explains the underlying pathophysiology,
pharmacology, or clinical reasoning.
Self-Assessment – Test your knowledge and Exam Preparation – Familiarize yourself with the
identify areas requiring further question format and content
study areas
Concept Reinforcement – Deepen your Confidence Building – Develop test-taking
understanding through strategies and reduce
evidence-based exam anxiety
rationales
Time Management – Practice answering
questions under simulated
exam conditions
Review Summary 150 Questions
Foundations - Application - WGU Network AND Security Foundations Objective Assessment 2026 Network
AND Security Foundations Undergraduate Junior/senior Level
All answers with rationales
,Table of Contents
Content Area Questions Key Topics
Network Fundamentals 1-25 Network, Needs, Addresses, Access, Control
Network Infrastructure AND 26-50 Network, Security, Packets, Server, Traffic
Topologies
Network Protocols AND 51-75 Network, Addresses, Layer, Protocol, Operates
Standards
Network Security 76-100 Security, Network, Certificate, Wants, Firewall
Fundamentals
Threats Vulnerabilities AND 101-125 Network, Security, Addresses, Protocol, Subnet
Attacks
Security Technologies AND 126-150 Network, Wants, Address, Firewall, Directly
Tools
TOTAL 150 All questions include answers and detailed rationales
,Section A - Network Fundamentals
Q1.
Which OSI layer is responsible for establishing, managing, and terminating sessions
between applications, including dialogue control and synchronization?
A. Transport Layer B. Session Layer
C. Presentation Layer D. Application Layer
Correct: B - Session Layer
Rationale:The Session Layer (Layer 5) establishes, manages, and terminates sessions, and
provides dialogue control and synchronization. The Transport Layer handles end-to-end
connections and reliability, while the Presentation Layer deals with data translation and
encryption. The Application Layer provides network services to user applications.
Why the other answers are wrong:
A. The Transport Layer ensures reliable data transfer and flow control, not session
management.
C. The Presentation Layer handles data format translation, encryption, and compression, not
session establishment.
D. The Application Layer provides user interfaces and network services, but does not manage
sessions.
Reference: WGU Network and Security Foundations, Module 1: OSI Model, Section 1.3
Q2.
An administrator needs to assign IPv4 addresses to hosts on a subnet that requires at
least 50 usable addresses while minimizing waste. Which subnet mask should be used?
A. /26 B. /27
C. /25 D. /28
Correct: A - /26
Rationale:A /26 subnet mask provides 64 total addresses, with 62 usable host addresses (64
minus network and broadcast), which meets the requirement of at least 50 usable addresses
with minimal waste. A /27 provides only 30 usable addresses, insufficient. A /25 provides 126
usable addresses, which is more than needed and wastes addresses. A /28 provides only 14
usable addresses.
Why the other answers are wrong:
B. A /27 provides only 30 usable addresses, which is less than the required 50.
C. A /25 provides 126 usable addresses, which is more than necessary and wastes address
space.
Page 3
, Section A - Network Fundamentals
D. A /28 provides only 14 usable addresses, far too few.
Reference: WGU Network and Security Foundations, Module 2: IP Addressing, Section 2.2
Q3.
Which protocol is used by a client to securely retrieve email from a mail server while
keeping messages synchronized across multiple devices?
A. POP3 B. IMAP
C. SMTP D. HTTP
Correct: B - IMAP
Rationale:IMAP (Internet Message Access Protocol) keeps email messages on the server
and synchronizes them across multiple devices, allowing users to access the same mailbox
from different locations. POP3 downloads messages and typically removes them from the
server, which does not support synchronization. SMTP is for sending email, and HTTP is for
web traffic.
Why the other answers are wrong:
A. POP3 downloads messages to a single device and often deletes them from the server,
preventing synchronization.
C. SMTP is used for sending email, not retrieving it.
D. HTTP is used for web browsing, not email retrieval.
Reference: WGU Network and Security Foundations, Module 3: Application Layer Protocols, Section 3.4
Q4.
A network engineer is configuring a switch and needs to prevent loops while allowing
redundancy. Which protocol should be enabled?
A. VLAN Trunking Protocol (VTP) B. Spanning Tree Protocol (STP)
C. Link Aggregation Control Protocol D. Dynamic Host Configuration Protocol
(LACP) (DHCP)
Correct: B - Spanning Tree Protocol (STP)
Rationale:Spanning Tree Protocol (STP) prevents loops in a switched network by blocking
redundant paths, while still allowing redundancy if a primary link fails. VTP manages VLAN
configurations, LACP bundles links for increased bandwidth, and DHCP assigns IP
addresses.
Why the other answers are wrong:
A. VTP propagates VLAN information but does not prevent loops.
C. LACP combines multiple physical links into one logical link, but does not prevent loops.
D. DHCP dynamically assigns IP addresses and does not address loop prevention.
Reference: WGU Network and Security Foundations, Module 4: Switching and VLANs, Section 4.3
Page 4
