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WGU D315 NETWORK AND SECURITY
FOUNDATION 2025 UPDATED ACTUAL EXAM
WITH CORRECT SOLUTIONS.
Physical layer - correct answer- Layer representing the physical
medium connecting computers
Wiretapping - correct answer- Attack involving tampering with
physical cables to eavesdrop
Copper-based wiring - correct answer- Susceptible to electronic
sniffing due to electromagnetic field
Data Link layer - correct answer- Layer defining how computers
connect to the network
Network layer - correct answer- Enables data exchange
between computers on different networks
IP and ICMP protocols - correct answer- Protocols found at the
Network layer in the TCP/IP suite
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Ping attacks - correct answer- Intended to disrupt
communication on the network
Spoofing - correct answer- Impersonating another computer's
IP or MAC address
Transport layer - correct answer- Layer with TCP and UDP
protocols refining addressing using port numbers
Port number - correct answer- 16-bit number identifying a
service on a host
Session layer - correct answer- Allows differentiation between
connections within a service on the same host
Presentation layer - correct answer- Serves as a translation
and security layer between applications
Encoding - correct answer- Process of writing data in a
particular manner, such as a standardized file format
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Application layer - correct answer- Defines how users connect
with application services through protocols
Unshielded twisted pair cables (UTP cables) - correct answer-
Created by twisting pairs of wires to protect and cancel out
interference
RJ45 and RJ11 connectors - correct answer- Most common
connectors for ethernet and phone wires, respectively
Coaxial cables - correct answer- Analog cables with a metal
shield to block signal interference
Fiber cables - correct answer- Use glass or plastic threads to
transfer data using light
Single-mode cables - correct answer- Made up of one single
glass or plastic fiber, carrying higher bandwidth for longer
distances
WGU D315 NETWORK AND SECURITY
FOUNDATION 2025 UPDATED ACTUAL EXAM
WITH CORRECT SOLUTIONS.
Physical layer - correct answer- Layer representing the physical
medium connecting computers
Wiretapping - correct answer- Attack involving tampering with
physical cables to eavesdrop
Copper-based wiring - correct answer- Susceptible to electronic
sniffing due to electromagnetic field
Data Link layer - correct answer- Layer defining how computers
connect to the network
Network layer - correct answer- Enables data exchange
between computers on different networks
IP and ICMP protocols - correct answer- Protocols found at the
Network layer in the TCP/IP suite
,2 | Page
Ping attacks - correct answer- Intended to disrupt
communication on the network
Spoofing - correct answer- Impersonating another computer's
IP or MAC address
Transport layer - correct answer- Layer with TCP and UDP
protocols refining addressing using port numbers
Port number - correct answer- 16-bit number identifying a
service on a host
Session layer - correct answer- Allows differentiation between
connections within a service on the same host
Presentation layer - correct answer- Serves as a translation
and security layer between applications
Encoding - correct answer- Process of writing data in a
particular manner, such as a standardized file format
, 3 | Page
Application layer - correct answer- Defines how users connect
with application services through protocols
Unshielded twisted pair cables (UTP cables) - correct answer-
Created by twisting pairs of wires to protect and cancel out
interference
RJ45 and RJ11 connectors - correct answer- Most common
connectors for ethernet and phone wires, respectively
Coaxial cables - correct answer- Analog cables with a metal
shield to block signal interference
Fiber cables - correct answer- Use glass or plastic threads to
transfer data using light
Single-mode cables - correct answer- Made up of one single
glass or plastic fiber, carrying higher bandwidth for longer
distances
