WGU D315 - PRE-ASSESSMENT: NETWORK
AND SECURITY – FOUNDATIONS 2026
QUESTIONS AND ANSWERS A+ LATEST
,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 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
Address: 172.217.11.132
a. dig
b. nslookup
d. whois
d. nmap - ✔✔ANSWER✔✔-nslookup
Which command should be used to manually enter the default gateway for a computer?
a. route
b. ipconfig
c. arp
d. netstat - ✔✔ANSWER✔✔-route
Which network diagnostic tool displays the path packets take between two endpoints?
a. ifconfig
b. traceroute
c. ftp
d. nslookup - ✔✔ANSWER✔✔-traceroute
Which network type is used to wire multiple PCs to a home router?
a. LAN
b. PAN
c. MAN
d. WAN - ✔✔ANSWER✔✔-LAN
AND SECURITY – FOUNDATIONS 2026
QUESTIONS AND ANSWERS A+ LATEST
,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 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
Address: 172.217.11.132
a. dig
b. nslookup
d. whois
d. nmap - ✔✔ANSWER✔✔-nslookup
Which command should be used to manually enter the default gateway for a computer?
a. route
b. ipconfig
c. arp
d. netstat - ✔✔ANSWER✔✔-route
Which network diagnostic tool displays the path packets take between two endpoints?
a. ifconfig
b. traceroute
c. ftp
d. nslookup - ✔✔ANSWER✔✔-traceroute
Which network type is used to wire multiple PCs to a home router?
a. LAN
b. PAN
c. MAN
d. WAN - ✔✔ANSWER✔✔-LAN
