WGU D440 Network and Security Foundations Comprehensive Exam 2026 UPDATE
1. A security analyst is ensuring that data is not modified by unauthorized users during
transmission. Which component of the CIA triad is being addressed?
A. Availability
B. Confidentiality
C. Integrity
D. Authentication
Answer: C
Rationale: Integrity ensures that information and programs are changed only in a specified
and authorized manner, protecting against unauthorized modification or destruction of
information.
2. Which layer of the OSI model is responsible for routing packets across different networks
using logical addresses?
A. Data Link Layer
B. Network Layer
C. Transport Layer
D. Session Layer
,Answer: B
Rationale: The Network Layer (Layer 3) is responsible for logical addressing (IP
addresses) and determining the best path for data to travel across interconnected
networks.
3. An employee receives an email that appears to be from their bank, asking them to click a
link to verify their account details. What type of social engineering attack is this?
A. Tailgating
B. Shoulder Surfing
C. Phishing
D. Vishing
Answer: C
Rationale: Phishing is a method of trying to gather personal information using deceptive
emails and websites.
4. Which network device operates primarily at Layer 2 of the OSI model and uses MAC
addresses to forward data to specific ports?
A. Hub
B. Router
C. Repeater
D. Switch
, Answer: D
Rationale: Switches operate at the Data Link Layer (Layer 2) and use MAC addresses to
direct traffic to the specific physical port where the destination device is connected.
5. Which protocol is used to automatically assign IP addresses, subnet masks, and default
gateways to hosts on a network?
A. DNS
B. DHCP
C. HTTP
D. SNMP
Answer: B
Rationale: Dynamic Host Configuration Protocol (DHCP) is used to dynamically assign IP
addresses and other network configuration parameters to devices on a network.
6. A company wants to ensure that if one server fails, another server can immediately take
over its duties to maintain uptime. Which concept does this represent?
A. Confidentiality
B. Non-repudiation
C. Integrity
D. Availability
Answer: D
1. A security analyst is ensuring that data is not modified by unauthorized users during
transmission. Which component of the CIA triad is being addressed?
A. Availability
B. Confidentiality
C. Integrity
D. Authentication
Answer: C
Rationale: Integrity ensures that information and programs are changed only in a specified
and authorized manner, protecting against unauthorized modification or destruction of
information.
2. Which layer of the OSI model is responsible for routing packets across different networks
using logical addresses?
A. Data Link Layer
B. Network Layer
C. Transport Layer
D. Session Layer
,Answer: B
Rationale: The Network Layer (Layer 3) is responsible for logical addressing (IP
addresses) and determining the best path for data to travel across interconnected
networks.
3. An employee receives an email that appears to be from their bank, asking them to click a
link to verify their account details. What type of social engineering attack is this?
A. Tailgating
B. Shoulder Surfing
C. Phishing
D. Vishing
Answer: C
Rationale: Phishing is a method of trying to gather personal information using deceptive
emails and websites.
4. Which network device operates primarily at Layer 2 of the OSI model and uses MAC
addresses to forward data to specific ports?
A. Hub
B. Router
C. Repeater
D. Switch
, Answer: D
Rationale: Switches operate at the Data Link Layer (Layer 2) and use MAC addresses to
direct traffic to the specific physical port where the destination device is connected.
5. Which protocol is used to automatically assign IP addresses, subnet masks, and default
gateways to hosts on a network?
A. DNS
B. DHCP
C. HTTP
D. SNMP
Answer: B
Rationale: Dynamic Host Configuration Protocol (DHCP) is used to dynamically assign IP
addresses and other network configuration parameters to devices on a network.
6. A company wants to ensure that if one server fails, another server can immediately take
over its duties to maintain uptime. Which concept does this represent?
A. Confidentiality
B. Non-repudiation
C. Integrity
D. Availability
Answer: D
