WGU C172 Network and Security - WGU
Exam Study Guide – Complete
Questions with Correct Detailed
Answers | Latest Updated Version
Prepare effectively for your Western Governors University (WGU) exams with this
comprehensive and well-organized study guide. This resource contains complete exam
questions with correct and detailed answers, designed to help students understand key
concepts and successfully prepare for their WGU assessments.
WGU courses follow a competency-based learning model, meaning students must
demonstrate a strong understanding of course objectives before passing their assessments.
This study guide helps simplify the process by providing structured questions and accurate
explanations that reinforce important topics and improve exam readiness.
What This Study Guide Includes
✔ Complete exam questions covering key WGU course competencies
✔ Correct answers with clear and detailed explanations
✔ Organized format for quick and effective revision
✔ Coverage of commonly tested concepts in WGU assessments
✔ Latest updated version for reliable exam preparation
Why This Study Guide Is Helpful
This resource is designed to help students review faster, understand concepts more clearly,
and build confidence before taking WGU Objective Assessments (OA). Practicing with
structured questions and reviewing detailed answers helps strengthen knowledge and
improve test-taking skills.
Ideal For
,• WGU Objective Assessment (OA) preparation
• Midterm and final exam review
• Self-paced study and revision
• Practicing exam-style questions
• Strengthening understanding of course competencies
A valuable study resource designed to support WGU students in preparing effectively and
performing confidently in their exams.
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
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
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
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 your Internet browser and email (HTTP, FTP, SMTP). 7th OSI
layer
3 basic steps to isolate network problem -answer Is the connection to the machine
down? (layer 1)
Is the network down? (layer 3)
Is a service on a specific machine down? (layer 7)
CSMA/CD -answer The Ethernet LAN media-access method, carrier sense multiple
access with collision detection
Ethernet -answer LAN protocol created in 1972 and standardized in 1980 using
CSMA/CD.
Frame -answer Contains the header, data, and trailer (the padding and 4-byte CRC
frame check sequence)
Frame header -answer Consists of the preamble, start frame delimiter, destination
and source addresses, and length/type field
64 bytes -answer Minimum length of an Ethernet frame
1518 bytes -answer Maximum length of an Ethernet frame
Exam Study Guide – Complete
Questions with Correct Detailed
Answers | Latest Updated Version
Prepare effectively for your Western Governors University (WGU) exams with this
comprehensive and well-organized study guide. This resource contains complete exam
questions with correct and detailed answers, designed to help students understand key
concepts and successfully prepare for their WGU assessments.
WGU courses follow a competency-based learning model, meaning students must
demonstrate a strong understanding of course objectives before passing their assessments.
This study guide helps simplify the process by providing structured questions and accurate
explanations that reinforce important topics and improve exam readiness.
What This Study Guide Includes
✔ Complete exam questions covering key WGU course competencies
✔ Correct answers with clear and detailed explanations
✔ Organized format for quick and effective revision
✔ Coverage of commonly tested concepts in WGU assessments
✔ Latest updated version for reliable exam preparation
Why This Study Guide Is Helpful
This resource is designed to help students review faster, understand concepts more clearly,
and build confidence before taking WGU Objective Assessments (OA). Practicing with
structured questions and reviewing detailed answers helps strengthen knowledge and
improve test-taking skills.
Ideal For
,• WGU Objective Assessment (OA) preparation
• Midterm and final exam review
• Self-paced study and revision
• Practicing exam-style questions
• Strengthening understanding of course competencies
A valuable study resource designed to support WGU students in preparing effectively and
performing confidently in their exams.
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
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
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
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 your Internet browser and email (HTTP, FTP, SMTP). 7th OSI
layer
3 basic steps to isolate network problem -answer Is the connection to the machine
down? (layer 1)
Is the network down? (layer 3)
Is a service on a specific machine down? (layer 7)
CSMA/CD -answer The Ethernet LAN media-access method, carrier sense multiple
access with collision detection
Ethernet -answer LAN protocol created in 1972 and standardized in 1980 using
CSMA/CD.
Frame -answer Contains the header, data, and trailer (the padding and 4-byte CRC
frame check sequence)
Frame header -answer Consists of the preamble, start frame delimiter, destination
and source addresses, and length/type field
64 bytes -answer Minimum length of an Ethernet frame
1518 bytes -answer Maximum length of an Ethernet frame
