WGU D315 NETWORK AND SECURITY
FOUNDATION EXAMINATION 2026
COMPREHENSIVE BUNDLE QUESTIONS
WITH VERIFIED ANSWERS GRADED A+
⩥ 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
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
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?
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?
Non-authoritative answer:
Name: www.google.com
FOUNDATION EXAMINATION 2026
COMPREHENSIVE BUNDLE QUESTIONS
WITH VERIFIED ANSWERS GRADED A+
⩥ 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
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
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?
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?
Non-authoritative answer:
Name: www.google.com
