WGU D413 – Telecommunications &
Wireless Communications Objective
Assessment | OA V1 and V2 | Questions
and Answers | 2026 Update | 100%
Correct.
10Base2 - answer-Classification that specifies the use of RG-58 cable and a data rate
of 10 Mbps. (2)
10Base5 - answer-First IEEE 802.3 classification developed for Ethernet. (2)
10BaseT - answer-Classification specifies the use of the diff erent categories of UTP
cable. (2)
6to4 - answer-Mechanism that provides a means of communicating across the IPv4
Internet while preserving the orig-inal IPv6 assigned address of the network device. (10)
A+ Certification - answer-Designed to test a person's knowledge related to PC support
and repair; pronounced A-plus. (20)
AAA proxy - answer-Network device that acts as an intermediary to exchange secu-rity
packets between the AAA server and the AAA client. (15)
absorption - answer-Occurs when intervening material absorbs some of the signal. (3)
access method - answer-Method of gaining ac-cess to the network media. (6)
access port - answer-Hub connection to which each network cable is connected. (1)
acoustical echo - answer-Condition that takes place when a microphone and a speaker
are in close proximity or the audio is improperly adjusted, causing feedback. (12)
ACPI Component Architecture (ACPICA) - answer-Extension to the original ACPI
standard. (9)
Active Directory (AD) - answer-Windows Server standard used to manage large and
small network systems. (7)
,active hub - answer-Enhanced passive hub; also called an intelligent hub or switch. (1)
active partition - answer-Describes the partition that contains the operating system files
the computer should use to boot. (17)
adaptive cut-through - answer-Frame-forwarding technique that operates as cut-through
until an unaccept-able number of corrupt frames are detected. (11)
Address Resolution Protocol (ARP) - answer-Communication protocol that resolves an
assigned IPv4 network address to a physical address (MAC address). (6)
Address Resolution Protocol (ARP) - answer-Used to map the host MAC address to the
logical host IP address. (10)
ad hoc mode - answer-Wireless network arrangement in which a wireless access point
is not present. (4)
administrative server - answer-Administers network security and activities. (1)
alien crosstalk (AXT) - answer-Measurement of noise introduced outside the cable
jacket, typically caused by other net-work cables in close proximity. (2)
American National Standards Institute (ANSI) - answer-Private, nonprofit organization
that does not develop standards, but rather prompts voluntary conformity and
standardization. (1)
American Standard Code for Information Interchange (ASCII) - answer-Early attempt to
standard-ize data codes. (5)
amplifier - answer-Electronic device designed to raise a signal's amplitude. (2)
analog signal - answer-Signal that has a contin-uous range of values, much like a wave.
(2)
analog-to-digital converter (ADC) - answer-Computer chip designed to change an
analog signal to a digital signal. (12)
anonymous FTP site - answer-Allows anyone to access the site and download or
upload files. (13)
ANT+ - answer-Function that can be added to base ANT protocols that allows for
interoperability; pronounced ant plus. (4)
anycast address - answer-IPv6 address that delivers packets to the nearest in-terface;
mainly used for supporting router functions. (10)
,application gateway - answer-Provides security for specific applications such as FTP
and Telnet. (15)
application layer - answer-Interfaces directly to and performs common application
services for the application process-es; layer seven of the OSI model. (1)
archive bit - answer-Identifies if a file has changed since the last full or incremental
backup. (16)
asymmetric-key encryption - answer-Encryption method that uses two keys: a private
key and a public key; also known as public-key cryptography. (15)
asynchronous transfer mode (ATM) - answer-Protocol designed especially for
transmitting data, voice, and video. (1)
asynchronous transmission - answer-Data transmission method in which no reference
signal is present. (5)
attenuation - answer-Loss of signal strength. (1)
auditing - answer-Service that tracks the events, use, and access of network resources
and writes these actions to a log. (7)
authentication - answer-Process used to identify a user and ensure the user is who he
or she claims to be; also known as local authentication. (15)
authentication, authorization, and accounting (AAA) - answer-Security standard that
consists of three parts: authentication, authorization, and accounting; also known as
triple A. (15)
Automatic Configuration and Power Interface (ACPI) - answer-Standard for controlling
the power options for computer hardware devices. (9)
automatic medium-dependent interface crossover (Auto-MDIX) - answer-Electronic chip
technology incorpo-rated into Gigabit Ethernet devices to automatically reassign pin
func-tions and eliminate the need for a crossover cable. (2)
Automatic Private IP Addressing (APIPA) - answer-Feature that assigns an IP address
from a special set of IP ad-dresses that have been set aside by IANA when a DHCP
server cannot be reached. (10)
available bit rate (ABR) - answer-ATM data transfer classification most appro-priate for
file transfer because it uses the available bit rate associated with the networking
medium. (12)
, average utilization - answer-Measurement of the average amount of utilization or traffic
on a network in a given monitoring period. (16)
AWG rating - answer-Describes the size of a conductor's diameter. (2)
backbone - answer-Connects the telecommuni-cation closets, equipment rooms, and
main entrance facility. (18)
backdoor - answer-Software access port to a computer infected by a Trojan horse
backplane - answer-Simple motherboard designed with minimal components. (9)
bandwidth - answer-Measurement of the network media's ability to carry data. (2)
Bandwidth Allocation Protocol (BAP) - answer-Allows the number of lines used by
MLPPP to change on demand. (14)
bandwidth shaper - answer-Used to prioritize network packets to ensure quality of
service for time-sensitive applica-tions such as VoIP; also known as a traffic shaper.
(12)
baseband - answer-Method of transmitting data in the form of a digital signal, using the
entire bandwidth of a cable. (2)
baseline - answer-Measurement of performance characteristics that can be used at a
later date to determine if the network or server is performing satisfactorily. (16)
basic disk - answer-Term applied to the old system of hard disk drive configuration. (7)
Basic Rate ISDN (BRI-ISDN) - answer-ISDN cat-egory that consists of three conduc-
tors: two B channels, referred to as bearer channels, and one D channel, referred to as
the delta channel. (14)
basic service set (BSS) - answer-Group of wireless devices connected as a network. (4)
biometrics - answer-Science of using unique physical features of a person to con-firm
that person's identification for authentication purposes. (15)
bipolar digital signal - answer-Digital signal that fluctuates between a positive five-volt
level and a negative five-volt level. (5)
bit rate - answer-Number of bits used to repre-sent the amplitude of the analog signal.
(12)
blackout - answer-Total loss of electrical energy. (16)
Wireless Communications Objective
Assessment | OA V1 and V2 | Questions
and Answers | 2026 Update | 100%
Correct.
10Base2 - answer-Classification that specifies the use of RG-58 cable and a data rate
of 10 Mbps. (2)
10Base5 - answer-First IEEE 802.3 classification developed for Ethernet. (2)
10BaseT - answer-Classification specifies the use of the diff erent categories of UTP
cable. (2)
6to4 - answer-Mechanism that provides a means of communicating across the IPv4
Internet while preserving the orig-inal IPv6 assigned address of the network device. (10)
A+ Certification - answer-Designed to test a person's knowledge related to PC support
and repair; pronounced A-plus. (20)
AAA proxy - answer-Network device that acts as an intermediary to exchange secu-rity
packets between the AAA server and the AAA client. (15)
absorption - answer-Occurs when intervening material absorbs some of the signal. (3)
access method - answer-Method of gaining ac-cess to the network media. (6)
access port - answer-Hub connection to which each network cable is connected. (1)
acoustical echo - answer-Condition that takes place when a microphone and a speaker
are in close proximity or the audio is improperly adjusted, causing feedback. (12)
ACPI Component Architecture (ACPICA) - answer-Extension to the original ACPI
standard. (9)
Active Directory (AD) - answer-Windows Server standard used to manage large and
small network systems. (7)
,active hub - answer-Enhanced passive hub; also called an intelligent hub or switch. (1)
active partition - answer-Describes the partition that contains the operating system files
the computer should use to boot. (17)
adaptive cut-through - answer-Frame-forwarding technique that operates as cut-through
until an unaccept-able number of corrupt frames are detected. (11)
Address Resolution Protocol (ARP) - answer-Communication protocol that resolves an
assigned IPv4 network address to a physical address (MAC address). (6)
Address Resolution Protocol (ARP) - answer-Used to map the host MAC address to the
logical host IP address. (10)
ad hoc mode - answer-Wireless network arrangement in which a wireless access point
is not present. (4)
administrative server - answer-Administers network security and activities. (1)
alien crosstalk (AXT) - answer-Measurement of noise introduced outside the cable
jacket, typically caused by other net-work cables in close proximity. (2)
American National Standards Institute (ANSI) - answer-Private, nonprofit organization
that does not develop standards, but rather prompts voluntary conformity and
standardization. (1)
American Standard Code for Information Interchange (ASCII) - answer-Early attempt to
standard-ize data codes. (5)
amplifier - answer-Electronic device designed to raise a signal's amplitude. (2)
analog signal - answer-Signal that has a contin-uous range of values, much like a wave.
(2)
analog-to-digital converter (ADC) - answer-Computer chip designed to change an
analog signal to a digital signal. (12)
anonymous FTP site - answer-Allows anyone to access the site and download or
upload files. (13)
ANT+ - answer-Function that can be added to base ANT protocols that allows for
interoperability; pronounced ant plus. (4)
anycast address - answer-IPv6 address that delivers packets to the nearest in-terface;
mainly used for supporting router functions. (10)
,application gateway - answer-Provides security for specific applications such as FTP
and Telnet. (15)
application layer - answer-Interfaces directly to and performs common application
services for the application process-es; layer seven of the OSI model. (1)
archive bit - answer-Identifies if a file has changed since the last full or incremental
backup. (16)
asymmetric-key encryption - answer-Encryption method that uses two keys: a private
key and a public key; also known as public-key cryptography. (15)
asynchronous transfer mode (ATM) - answer-Protocol designed especially for
transmitting data, voice, and video. (1)
asynchronous transmission - answer-Data transmission method in which no reference
signal is present. (5)
attenuation - answer-Loss of signal strength. (1)
auditing - answer-Service that tracks the events, use, and access of network resources
and writes these actions to a log. (7)
authentication - answer-Process used to identify a user and ensure the user is who he
or she claims to be; also known as local authentication. (15)
authentication, authorization, and accounting (AAA) - answer-Security standard that
consists of three parts: authentication, authorization, and accounting; also known as
triple A. (15)
Automatic Configuration and Power Interface (ACPI) - answer-Standard for controlling
the power options for computer hardware devices. (9)
automatic medium-dependent interface crossover (Auto-MDIX) - answer-Electronic chip
technology incorpo-rated into Gigabit Ethernet devices to automatically reassign pin
func-tions and eliminate the need for a crossover cable. (2)
Automatic Private IP Addressing (APIPA) - answer-Feature that assigns an IP address
from a special set of IP ad-dresses that have been set aside by IANA when a DHCP
server cannot be reached. (10)
available bit rate (ABR) - answer-ATM data transfer classification most appro-priate for
file transfer because it uses the available bit rate associated with the networking
medium. (12)
, average utilization - answer-Measurement of the average amount of utilization or traffic
on a network in a given monitoring period. (16)
AWG rating - answer-Describes the size of a conductor's diameter. (2)
backbone - answer-Connects the telecommuni-cation closets, equipment rooms, and
main entrance facility. (18)
backdoor - answer-Software access port to a computer infected by a Trojan horse
backplane - answer-Simple motherboard designed with minimal components. (9)
bandwidth - answer-Measurement of the network media's ability to carry data. (2)
Bandwidth Allocation Protocol (BAP) - answer-Allows the number of lines used by
MLPPP to change on demand. (14)
bandwidth shaper - answer-Used to prioritize network packets to ensure quality of
service for time-sensitive applica-tions such as VoIP; also known as a traffic shaper.
(12)
baseband - answer-Method of transmitting data in the form of a digital signal, using the
entire bandwidth of a cable. (2)
baseline - answer-Measurement of performance characteristics that can be used at a
later date to determine if the network or server is performing satisfactorily. (16)
basic disk - answer-Term applied to the old system of hard disk drive configuration. (7)
Basic Rate ISDN (BRI-ISDN) - answer-ISDN cat-egory that consists of three conduc-
tors: two B channels, referred to as bearer channels, and one D channel, referred to as
the delta channel. (14)
basic service set (BSS) - answer-Group of wireless devices connected as a network. (4)
biometrics - answer-Science of using unique physical features of a person to con-firm
that person's identification for authentication purposes. (15)
bipolar digital signal - answer-Digital signal that fluctuates between a positive five-volt
level and a negative five-volt level. (5)
bit rate - answer-Number of bits used to repre-sent the amplitude of the analog signal.
(12)
blackout - answer-Total loss of electrical energy. (16)
