WGU C172 NETWORK AND SECURITY
FOUNDATIONS PA AND OA EXAM 2026
◉ layer of the osi model that interacts with application programs
that incorporate a communication component such as your internet
browser and email. Answer: application
◉ layer of the osi model that is also responsible for logging the
message in, interpreting the request, and determining what
information is needed to support the request. Answer: aPplication
◉ Hypertext Transfer Protocol (HTTP) for web browsing, File
Transfer Protocol (FTP) for transferring files, and Simple Mail
Transfer Protocol (SMTP) for email transmission are examples of
which osi model layer?. Answer: applicatioN
◉ What is step one of the three basic steps in the process of isolating
a network problem?. Answer: Is the connection to the machine down
(layer 1)
◉ What is step two of the three basic steps in the process of isolating
a network problem?. Answer: Is the network down? layer 3
,◉ What is step three of the three basic steps in the process of
isolating a network problem?. Answer: Is a service on a specific
machine down? layer 7
◉ A reply from" response from a ping indicates whate?". Answer: A
connection to the server is up
◉ A request timed out" response from a ping indicates what?".
Answer: the network connection is down
◉ What is the function of the data link layer of the osi model?.
Answer: to provide for the flow of data MAC addresses
◉ What is the function of the network layer?. Answer: to provide
routing decisions IP, IPX
◉ What is the function of the transport layer of the osi model?.
Answer: to ensure error free packets
◉ What is the function of the session layer of the osi model?.
Answer: to establish, manage, and terminate NFS, SQL sessions
, ◉ What is the function of the presentation layer of the osi model?.
Answer: to ensure protocol conversion, data transactions ASCII,
JPEG
◉ What is function of the application layer of the osi model?.
Answer: to support applications HTTP, FTP, and SMTP(email)
◉ Which networking protocol is used in most modern computer
networks?. Answer: Ethernet
◉ A carrier sense multiple access with collision detection protocol
for local area networks. Answer: Ethernet
◉ Must have the capability to detect data collisions (collision
detection) to avoid two or more computers from attempting to
broadcast a message at the same time.. Answer: Ethernet systems
◉ Provide grouping of information for transmission. Answer: packet
◉ What does the header of a packet consist of?. Answer: The
preamble, start frame delimiter, destination and source addresses,
and length/type field
FOUNDATIONS PA AND OA EXAM 2026
◉ layer of the osi model that interacts with application programs
that incorporate a communication component such as your internet
browser and email. Answer: application
◉ layer of the osi model that is also responsible for logging the
message in, interpreting the request, and determining what
information is needed to support the request. Answer: aPplication
◉ Hypertext Transfer Protocol (HTTP) for web browsing, File
Transfer Protocol (FTP) for transferring files, and Simple Mail
Transfer Protocol (SMTP) for email transmission are examples of
which osi model layer?. Answer: applicatioN
◉ What is step one of the three basic steps in the process of isolating
a network problem?. Answer: Is the connection to the machine down
(layer 1)
◉ What is step two of the three basic steps in the process of isolating
a network problem?. Answer: Is the network down? layer 3
,◉ What is step three of the three basic steps in the process of
isolating a network problem?. Answer: Is a service on a specific
machine down? layer 7
◉ A reply from" response from a ping indicates whate?". Answer: A
connection to the server is up
◉ A request timed out" response from a ping indicates what?".
Answer: the network connection is down
◉ What is the function of the data link layer of the osi model?.
Answer: to provide for the flow of data MAC addresses
◉ What is the function of the network layer?. Answer: to provide
routing decisions IP, IPX
◉ What is the function of the transport layer of the osi model?.
Answer: to ensure error free packets
◉ What is the function of the session layer of the osi model?.
Answer: to establish, manage, and terminate NFS, SQL sessions
, ◉ What is the function of the presentation layer of the osi model?.
Answer: to ensure protocol conversion, data transactions ASCII,
JPEG
◉ What is function of the application layer of the osi model?.
Answer: to support applications HTTP, FTP, and SMTP(email)
◉ Which networking protocol is used in most modern computer
networks?. Answer: Ethernet
◉ A carrier sense multiple access with collision detection protocol
for local area networks. Answer: Ethernet
◉ Must have the capability to detect data collisions (collision
detection) to avoid two or more computers from attempting to
broadcast a message at the same time.. Answer: Ethernet systems
◉ Provide grouping of information for transmission. Answer: packet
◉ What does the header of a packet consist of?. Answer: The
preamble, start frame delimiter, destination and source addresses,
and length/type field
