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WGU D315 NETWORK AND SECURITY FOUNDATIONS TEST
BANK - 200+ QUESTIONS WITH RATIONALES - LATEST 2026
EXAM PREP
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
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
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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?
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
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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
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?
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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
b. Dumb Terminals
c. Execution Displays
d. Command Receivers ......ANSWER......Dumb Terminals
Which device is responsible for implementing network address
translation (NAT)?
a. Modem
b. Router
c. NIC
d. Switch ......ANSWER......Router
Which command produces the following output?
WGU D315 NETWORK AND SECURITY FOUNDATIONS TEST
BANK - 200+ QUESTIONS WITH RATIONALES - LATEST 2026
EXAM PREP
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
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
,2|Page
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?
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
,3|Page
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
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?
, 4|Page
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
b. Dumb Terminals
c. Execution Displays
d. Command Receivers ......ANSWER......Dumb Terminals
Which device is responsible for implementing network address
translation (NAT)?
a. Modem
b. Router
c. NIC
d. Switch ......ANSWER......Router
Which command produces the following output?
