Network and Security -
Foundations - D315
WGU Exam Questions
and Complete Solutions
Graded A+
Which OSI layer is related to the function of the IP protocol suite? - Answer: Network
Which OSI layer is responsible for organizing how bits are passed over the physical layer between
devices within the same collision domain? - 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? - Answer: Transport
Which protocol suite performs functions of OSI layer 4? - Answer: TCP
Which type of Ethernet cable can maintain 10Gbps transmission speeds through the course of its
maximum 100-meter length? - Answer: CAT 6a
Which Internet access technology uses ordinary telephone wires for data transmission? - Answer: DSL
Which device is used to organize network cables as they run between switches and other network
devices? - Answer: Patch panel
Which network device is used to connect two or more network segments by performing OSI layer 3
functions like packet-forwarding? - 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? - Answer: Modem
Which device could be used to send commands to the mainframe for remote execution in early
mainframe installations? - Answer: Dumb terminals
Which device is responsible for implementing network address translation (NAT)? - Answer: Router
Which command should be used to manually enter the default gateway for a computer? - Answer: route
Which network diagnostic tool displays the path packets take between two endpoints? - Answer:
traceroute
Which network type is used to wire multiple PCs to a home router? - Answer: LAN
An office's infrastructure connects network devices and printers through a central access point without
the use of cabling.
Which network type does this office use? - Answer: WLAN
What type of medium is commonly used within a 1000 Mbps Ethernet network? - Answer: CAT5e
Which network topology is shown in the following diagram? - Answer: Full mesh
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