WGU D315 - Network and Security
Foundations Questions with 100%
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
Crossover cables Correct Answer: Used to connect two computing devices of
the same type directly to each other
Foundations Questions with 100%
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
Crossover cables Correct Answer: Used to connect two computing devices of
the same type directly to each other
