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WGU C172 Network and Security Foundations
Objective Assessment ACTUAL EXAM STUDY GUIDE
2025/2026 QUESTIONS BANK AND VERIFIED
CORRECT SOLUTIONS WITH RATIONALES || 100%
GUARANTEED PASS <LATEST VERSION>
protocol ......ANSWER........The set of rules established for users to
exchange information
topology ......ANSWER........The network architecture used to
interconnect the networking equipment
deterministic network ......ANSWER........Each station connected to
the network is ensured access for transmission of its messages at
regular or fixed time intervals
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bus topology ......ANSWER........The computers share the media
(coaxial cable) for data transmission
ThinNet ......ANSWER........The coaxial cable used in a bus
network.
star topology ......ANSWER........Twisted-pair cables connect the
devices to a central hub or switch
hub ......ANSWER........A multiport repeater device used at the
center of a star topology
multiport repeater ......ANSWER........The data it receives is
broadcast and seen by all devices connected to its ports. A hub.
broadcast ......ANSWER........Transmission of data by a hub to all
devices connected to its ports
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switch ......ANSWER........Device used at the center of a star
topology that forwards a frame it receives directly out the port
associated with its destination address
mesh topology ......ANSWER........All networking devices are
directly connected to each other, allows for full redundancy
OSI model ......ANSWER........The seven layers describing network
functions
Physical layer ......ANSWER........Provides the electrical and
mechanical connection to the network (cabling, NICs). 1st OSI
layer
Data link layer ......ANSWER........Handles error recovery, flow
control (synchronization), and sequencing (MAC, Ethernet). 2nd
OSI layer
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Network layer ......ANSWER........Accepts outgoing messages and
combines messages or segments into packets, adding a header
that includes routing information (IP, IPX). 3rd OSI layer
Transport layer ......ANSWER........Concerned with message
integrity between source and destination (TCP, UDP). 4th OSI
layer
Session layer ......ANSWER........Provides the control functions
necessary to establish, manage, and terminate the connections
(NSF, SQL). 5th OSI layer
Presentation layer ......ANSWER........Accepts and structures the
messages for the application (ASCII, JPEG). 6th OSI layer
Application layer ......ANSWER........Interacts with application
programs that incorporate a communication component such as
WGU C172 Network and Security Foundations
Objective Assessment ACTUAL EXAM STUDY GUIDE
2025/2026 QUESTIONS BANK AND VERIFIED
CORRECT SOLUTIONS WITH RATIONALES || 100%
GUARANTEED PASS <LATEST VERSION>
protocol ......ANSWER........The set of rules established for users to
exchange information
topology ......ANSWER........The network architecture used to
interconnect the networking equipment
deterministic network ......ANSWER........Each station connected to
the network is ensured access for transmission of its messages at
regular or fixed time intervals
,age 2 of 51
bus topology ......ANSWER........The computers share the media
(coaxial cable) for data transmission
ThinNet ......ANSWER........The coaxial cable used in a bus
network.
star topology ......ANSWER........Twisted-pair cables connect the
devices to a central hub or switch
hub ......ANSWER........A multiport repeater device used at the
center of a star topology
multiport repeater ......ANSWER........The data it receives is
broadcast and seen by all devices connected to its ports. A hub.
broadcast ......ANSWER........Transmission of data by a hub to all
devices connected to its ports
,age 3 of 51
switch ......ANSWER........Device used at the center of a star
topology that forwards a frame it receives directly out the port
associated with its destination address
mesh topology ......ANSWER........All networking devices are
directly connected to each other, allows for full redundancy
OSI model ......ANSWER........The seven layers describing network
functions
Physical layer ......ANSWER........Provides the electrical and
mechanical connection to the network (cabling, NICs). 1st OSI
layer
Data link layer ......ANSWER........Handles error recovery, flow
control (synchronization), and sequencing (MAC, Ethernet). 2nd
OSI layer
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Network layer ......ANSWER........Accepts outgoing messages and
combines messages or segments into packets, adding a header
that includes routing information (IP, IPX). 3rd OSI layer
Transport layer ......ANSWER........Concerned with message
integrity between source and destination (TCP, UDP). 4th OSI
layer
Session layer ......ANSWER........Provides the control functions
necessary to establish, manage, and terminate the connections
(NSF, SQL). 5th OSI layer
Presentation layer ......ANSWER........Accepts and structures the
messages for the application (ASCII, JPEG). 6th OSI layer
Application layer ......ANSWER........Interacts with application
programs that incorporate a communication component such as
