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WGU D315 - PRE-ASSESSMENT:
NETWORK AND SECURITY –
FOUNDATIONS 2026/2027
ACTUAL QUESTIONS WITH
VERIFIED ANSWERS.
Which OSI layer is related to the function of the IP protocol
suite?
a. Transport
b. Network
c. Data Link
d. Session - ANSWER-Network
Which OSI layer is responsible for organizing how bits are
passed over the physical layer between devices within the
same collision domain?
a. Frame
b. Connection
c. Transport
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d. Data Link - ANSWER-Data Link
Which OSI layer would define the scope of a protocol that
makes sure packets of data are received correctly and resends
them if they are not?
a. Validation
b. Transmission
c. Transport
d. Connection - ANSWER-Transport
Which protocol suite performs functions of OSI layer 4?
a. IPX
b. MAC
c. CSMA/CD
d. TCP - ANSWER-TCP
Which type of Ethernet cable can maintain 10Gbps
transmission speeds through the course of its maximum 100-
meter length?
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a. CAT 5e
b. CAT 5
c. CAT 3
d. CAT 6a - ANSWER-CAT 6a
Which Internet access technology uses ordinary telephone
wires for data transmission?
a. DSL
b. Cable
c. Wi-Fi
d. Hotspot - ANSWER-DSL
Which device is used to organize network cables as they run
between switches and other network devices?
a. Jack
b. Hub
c. Patch Panel
d. Router - ANSWER-Patch Panel
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Which network device is used to connect two or more network
segments by performing OSI layer 3 functions like packet-
forwarding?
a. Router
b. Repeater
c. Wire
d. Switch - ANSWER-Router
Which network device is used to convert between digital
information from a LAN and analog signals for transmission
over a standard telephone wire?
a. Repeater
b. Modem
c. Signal Generator
d. Bit Stretcher - ANSWER-Modem
Which device could be used to send commands to the
mainframe for remote execution in early mainframe
installations?
a. Distributed Screens
WGU D315 - PRE-ASSESSMENT:
NETWORK AND SECURITY –
FOUNDATIONS 2026/2027
ACTUAL QUESTIONS WITH
VERIFIED ANSWERS.
Which OSI layer is related to the function of the IP protocol
suite?
a. Transport
b. Network
c. Data Link
d. Session - ANSWER-Network
Which OSI layer is responsible for organizing how bits are
passed over the physical layer between devices within the
same collision domain?
a. Frame
b. Connection
c. Transport
,2 | Page
d. Data Link - ANSWER-Data Link
Which OSI layer would define the scope of a protocol that
makes sure packets of data are received correctly and resends
them if they are not?
a. Validation
b. Transmission
c. Transport
d. Connection - ANSWER-Transport
Which protocol suite performs functions of OSI layer 4?
a. IPX
b. MAC
c. CSMA/CD
d. TCP - ANSWER-TCP
Which type of Ethernet cable can maintain 10Gbps
transmission speeds through the course of its maximum 100-
meter length?
,3 | Page
a. CAT 5e
b. CAT 5
c. CAT 3
d. CAT 6a - ANSWER-CAT 6a
Which Internet access technology uses ordinary telephone
wires for data transmission?
a. DSL
b. Cable
c. Wi-Fi
d. Hotspot - ANSWER-DSL
Which device is used to organize network cables as they run
between switches and other network devices?
a. Jack
b. Hub
c. Patch Panel
d. Router - ANSWER-Patch Panel
, 4 | Page
Which network device is used to connect two or more network
segments by performing OSI layer 3 functions like packet-
forwarding?
a. Router
b. Repeater
c. Wire
d. Switch - ANSWER-Router
Which network device is used to convert between digital
information from a LAN and analog signals for transmission
over a standard telephone wire?
a. Repeater
b. Modem
c. Signal Generator
d. Bit Stretcher - ANSWER-Modem
Which device could be used to send commands to the
mainframe for remote execution in early mainframe
installations?
a. Distributed Screens
