WGU C172 NETWORK AND SECURITY FOUNDATIONS PA AND OA SET LATEST VERSION UPDATED AND REVISED IN

WGU C172 NETWORK AND SECURITY FOUNDATIONS
PA AND OA SET LATEST VERSION UPDATED AND
REVISED IN 2025-2026


Open systems interconnect reference model - ANSWER->OSI Who was
the OSI model developed by? - ANSWER->The
International Organization for Standardization

What year was the OSI model developed? - ANSWER->1984

What is the purpose of the OSI model? - ANSWER->to enable different
types of networks to be linked together

What is OSI meant for? - ANSWER->To provide a framework for
networking devices that ensure compatibility in the network hardware
and software.

What is the OSI model meant to accelerate? - ANSWER->The
development of new networking technologies.

What is layer 1 of the OSI model? - ANSWER->Physical

The layer of the OSI model that provides the electrical and mechanical
connection to the network. - ANSWER->physical

UTP, fiber, and network interface cards are examples of which layer of
the OSI model? - ANSWER->physicaL

,What is layer 2 of the OSI model? - ANSWER->Data link

Layer of the OSI model that handles error recovery, flow control
(synchronization), and sequencing (which terminals are sending and
which are receiving) - ANSWER->data link
Also called the media access control layer - ANSWER->data Link

The layer of the OSI model where the Media Access Control or
MAC, addressing is defined - ANSWER->data lInk

Where is the Ethernet 802.3 standard defined? - ANSWER->In the MAC
or media access control

Also called the Ethernet address - ANSWER->MAC or media access
control

MAC addresses are an example of which layer of the OSI model? -
ANSWER->data linK

What is layer 3 of the OSI model? - ANSWER->Network

layer of the OSI model that accepts outgoing messages and combines
messages or segments into packets, adding a header that includes
routing information. - ANSWER->network

Acts as the network controller - ANSWER->network layer of the
OSI model

Internet Protocol (IP) and internetwork packet exchange (IPX) are
examples of which layer of the OSI model? - ANSWER>networK

, What is layer 4 of the OSI model? - ANSWER->Transport
layer of the OSI model that is concerned with message integrity
between source and destination - ANSWER->transport

layer of the osi model that also segments/reassembles the packes and
handles flow control - ANSWER->tRansport

Transmission control protocol (TCP) and User Datagram
Protocol are examples of which layer of the OSI model? - ANSWER-
>transporT

What is layer 5 of the osi model? - ANSWER->Session

layer of the osi model that provides the control functions necessary to
establish, manage, and terminate the connections as required to satisfy
the user request - ANSWER->session

Network File system (NFS) and Structured Query Language
(SQL) are examples of which osi model layer? - ANSWER-
>sessioN

What is layer 6 of the osi model? - ANSWER->Presentation

layer of the osi model that accepts and structures the messages
for the application. If necessary, it will translate one code to
another - ANSWER->presentation

layer of the osi model that is also responsible for data compression and
encryption - ANSWER->pResentation American Standard Code for