WGU D315 - Network and Security
Foundations UPDATED Exam Questions
and CORRECT Answers
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
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
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
Multimode fibers - CORRECT ANSWER - Highly effective over medium distances and
generally used within a LAN
Foundations UPDATED Exam Questions
and CORRECT Answers
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
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
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
Multimode fibers - CORRECT ANSWER - Highly effective over medium distances and
generally used within a LAN
