WGU D481 - Section 2 OA prep
Exam 2025 Questions and Answers
Circuit-switched - ANSWER✔✔-Creates a path between source and destination devices
Extranet - ANSWER✔✔-Private network for authorized external users to share
information
Internet Protocol (IP) - ANSWER✔✔-Delivers packets across networks by handling
routing decisions
Internet Protocol (IP) Suite - ANSWER✔✔-Another name for the TCP/IP suite
Internetworking - ANSWER✔✔-Connecting multiple computer networks
Intranet - ANSWER✔✔-Private, internal network
Logical Topology - ANSWER✔✔-Shows how devices connect to a specific segment of
the network
Network Topology - ANSWER✔✔-Map of a network and how devices are connected
,Open Systems Interconnection (OSI) Reference Model - ANSWER✔✔-Framework of
standards for computer system communication
Packet-switched - ANSWER✔✔-Networks that transmit packets as individual messages
Physical Topology - ANSWER✔✔-Physical network devices and devices used to
connect
Point-to-point Network - ANSWER✔✔-Network consisting only of directly connected
computers and devices
Transmission Control Protocol (TCP) - ANSWER✔✔-Guarantees reliable data stream
between two computers
Transmission Control Protocol/Internet Protocol (TCP/IP) Reference Model -
ANSWER✔✔-Descriptive framework for computer network protocols
Transmission Control Protocol/Internet Protocol (TCP/IP) Suite - ANSWER✔✔-
Collection that provides support to internet-capable systems and devices
Data Link Layer - ANSWER✔✔-Second layer of the OSI model, also called Layer 2
Bridges - ANSWER✔✔-Network devices that interconnect two or more LANs
Ethernet - ANSWER✔✔-Wired system for connecting devices in local area networks
Hub - ANSWER✔✔-Hardware device that connects multiple networking devices
,IEEE 802.3 Standards - ANSWER✔✔-Ethernet standards and protocols established by
IEEE
IEEE 802.3 CSMA/CD Standards - ANSWER✔✔-Standard specifications for Ethernet
Physical Layer - ANSWER✔✔-First layer of the OSI model, also called Layer 1
Protocol - ANSWER✔✔-Established set of rules for data transmission across devices
Redundancy - ANSWER✔✔-Providing alternate means for network to continue
functioning
Repeater - ANSWER✔✔-Device that receives and amplifies a signal
Resilience - ANSWER✔✔-Ability to continue providing acceptable service despite
challenges
Structured Wiring System - ANSWER✔✔-Modular cable solution that is flexible
Switches - ANSWER✔✔-Networking equipment that allows multiple devices to
communicate
Connection-oriented Protocol - ANSWER✔✔-Sets up a connection between source and
destination
Connectionless Protocol - ANSWER✔✔-Treats each connection individually
Datagram - ANSWER✔✔-Packets transmitted across networks
, Internet Assigned Numbers Authority (IANA) - ANSWER✔✔-Organization overseeing
IP address allocations
Network Address Translation (NAT) - ANSWER✔✔-Maps local private addresses to
public ones
ARPANET - ANSWER✔✔-Computer network developed by the Department of
Defense
Layer 2 Tunneling Protocol (L2TP) - ANSWER✔✔-Protocol supporting virtual private
networks (VPNs)
Web Browser - ANSWER✔✔-Protocol to link all resources together
SMTP - ANSWER✔✔-Simple Mail Transfer Protocol (SMTP) is a TCP service that
operates on port 25 and is used for the exchange of electronic mail between networked
systems.
Spoofing - ANSWER✔✔-Spoofing is a vulnerability associated with SMTP where an
attacker impersonates a trusted entity to gain unauthorized access.
Spamming - ANSWER✔✔-Spamming is a vulnerability associated with SMTP where an
attacker sends unsolicited bulk emails.
TFTP - ANSWER✔✔-Trivial File Transfer Protocol (TFTP) operates on UDP port 69 and
is used to transfer router configuration files and configure cable modems.
Exam 2025 Questions and Answers
Circuit-switched - ANSWER✔✔-Creates a path between source and destination devices
Extranet - ANSWER✔✔-Private network for authorized external users to share
information
Internet Protocol (IP) - ANSWER✔✔-Delivers packets across networks by handling
routing decisions
Internet Protocol (IP) Suite - ANSWER✔✔-Another name for the TCP/IP suite
Internetworking - ANSWER✔✔-Connecting multiple computer networks
Intranet - ANSWER✔✔-Private, internal network
Logical Topology - ANSWER✔✔-Shows how devices connect to a specific segment of
the network
Network Topology - ANSWER✔✔-Map of a network and how devices are connected
,Open Systems Interconnection (OSI) Reference Model - ANSWER✔✔-Framework of
standards for computer system communication
Packet-switched - ANSWER✔✔-Networks that transmit packets as individual messages
Physical Topology - ANSWER✔✔-Physical network devices and devices used to
connect
Point-to-point Network - ANSWER✔✔-Network consisting only of directly connected
computers and devices
Transmission Control Protocol (TCP) - ANSWER✔✔-Guarantees reliable data stream
between two computers
Transmission Control Protocol/Internet Protocol (TCP/IP) Reference Model -
ANSWER✔✔-Descriptive framework for computer network protocols
Transmission Control Protocol/Internet Protocol (TCP/IP) Suite - ANSWER✔✔-
Collection that provides support to internet-capable systems and devices
Data Link Layer - ANSWER✔✔-Second layer of the OSI model, also called Layer 2
Bridges - ANSWER✔✔-Network devices that interconnect two or more LANs
Ethernet - ANSWER✔✔-Wired system for connecting devices in local area networks
Hub - ANSWER✔✔-Hardware device that connects multiple networking devices
,IEEE 802.3 Standards - ANSWER✔✔-Ethernet standards and protocols established by
IEEE
IEEE 802.3 CSMA/CD Standards - ANSWER✔✔-Standard specifications for Ethernet
Physical Layer - ANSWER✔✔-First layer of the OSI model, also called Layer 1
Protocol - ANSWER✔✔-Established set of rules for data transmission across devices
Redundancy - ANSWER✔✔-Providing alternate means for network to continue
functioning
Repeater - ANSWER✔✔-Device that receives and amplifies a signal
Resilience - ANSWER✔✔-Ability to continue providing acceptable service despite
challenges
Structured Wiring System - ANSWER✔✔-Modular cable solution that is flexible
Switches - ANSWER✔✔-Networking equipment that allows multiple devices to
communicate
Connection-oriented Protocol - ANSWER✔✔-Sets up a connection between source and
destination
Connectionless Protocol - ANSWER✔✔-Treats each connection individually
Datagram - ANSWER✔✔-Packets transmitted across networks
, Internet Assigned Numbers Authority (IANA) - ANSWER✔✔-Organization overseeing
IP address allocations
Network Address Translation (NAT) - ANSWER✔✔-Maps local private addresses to
public ones
ARPANET - ANSWER✔✔-Computer network developed by the Department of
Defense
Layer 2 Tunneling Protocol (L2TP) - ANSWER✔✔-Protocol supporting virtual private
networks (VPNs)
Web Browser - ANSWER✔✔-Protocol to link all resources together
SMTP - ANSWER✔✔-Simple Mail Transfer Protocol (SMTP) is a TCP service that
operates on port 25 and is used for the exchange of electronic mail between networked
systems.
Spoofing - ANSWER✔✔-Spoofing is a vulnerability associated with SMTP where an
attacker impersonates a trusted entity to gain unauthorized access.
Spamming - ANSWER✔✔-Spamming is a vulnerability associated with SMTP where an
attacker sends unsolicited bulk emails.
TFTP - ANSWER✔✔-Trivial File Transfer Protocol (TFTP) operates on UDP port 69 and
is used to transfer router configuration files and configure cable modems.
