WGU D413 - Telecomm and Wireless Communications Exam Questions with Correct Answers
Latest Update 2025-2026
10Base2 - Answers Classification that specifies the use of RG-58 cable and a data rate of 10
Mbps. (2)
10Base5 - Answers First IEEE 802.3 classification developed for Ethernet. (2)
10BaseT - Answers Classification specifies the use of the diff erent categories of UTP cable. (2)
6to4 - Answers 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 - Answers Designed to test a person's knowledge related to PC support and
repair; pronounced A-plus. (20)
AAA proxy - Answers Network device that acts as an intermediary to exchange secu-rity packets
between the AAA server and the AAA client. (15)
absorption - Answers Occurs when intervening material absorbs some of the signal. (3)
access method - Answers Method of gaining ac-cess to the network media. (6)
access port - Answers Hub connection to which each network cable is connected. (1)
acoustical echo - Answers 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) - Answers Extension to the original ACPI standard. (9)
Active Directory (AD) - Answers Windows Server standard used to manage large and small
network systems. (7)
active hub - Answers Enhanced passive hub; also called an intelligent hub or switch. (1)
active partition - Answers Describes the partition that contains the operating system files the
computer should use to boot. (17)
adaptive cut-through - Answers Frame-forwarding technique that operates as cut-through until
an unaccept-able number of corrupt frames are detected. (11)
Address Resolution Protocol (ARP) - Answers Communication protocol that resolves an
assigned IPv4 network address to a physical address (MAC address). (6)
Address Resolution Protocol (ARP) - Answers Used to map the host MAC address to the logical
host IP address. (10)
ad hoc mode - Answers Wireless network arrangement in which a wireless access point is not
,present. (4)
administrative server - Answers Administers network security and activities. (1)
alien crosstalk (AXT) - Answers Measurement of noise introduced outside the cable jacket,
typically caused by other net-work cables in close proximity. (2)
American National Standards Institute (ANSI) - Answers Private, nonprofit organization that
does not develop standards, but rather prompts voluntary conformity and standardization. (1)
American Standard Code for Information Interchange (ASCII) - Answers Early attempt to
standard-ize data codes. (5)
amplifier - Answers Electronic device designed to raise a signal's amplitude. (2)
analog signal - Answers Signal that has a contin-uous range of values, much like a wave. (2)
analog-to-digital converter (ADC) - Answers Computer chip designed to change an analog signal
to a digital signal. (12)
anonymous FTP site - Answers Allows anyone to access the site and download or upload files.
(13)
ANT+ - Answers Function that can be added to base ANT protocols that allows for
interoperability; pronounced ant plus. (4)
anycast address - Answers IPv6 address that delivers packets to the nearest in-terface; mainly
used for supporting router functions. (10)
application gateway - Answers Provides security for specific applications such as FTP and
Telnet. (15)
application layer - Answers Interfaces directly to and performs common application services for
the application process-es; layer seven of the OSI model. (1)
archive bit - Answers Identifies if a file has changed since the last full or incremental backup.
(16)
asymmetric-key encryption - Answers Encryption method that uses two keys: a private key and a
public key; also known as public-key cryptography. (15)
asynchronous transfer mode (ATM) - Answers Protocol designed especially for transmitting
data, voice, and video. (1)
asynchronous transmission - Answers Data transmission method in which no reference signal
is present. (5)
attenuation - Answers Loss of signal strength. (1)
,auditing - Answers Service that tracks the events, use, and access of network resources and
writes these actions to a log. (7)
authentication - Answers 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) - Answers Security standard that consists
of three parts: authentication, authorization, and accounting; also known as triple A. (15)
Automatic Configuration and Power Interface (ACPI) - Answers Standard for controlling the
power options for computer hardware devices. (9)
automatic medium-dependent interface crossover (Auto-MDIX) - Answers 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) - Answers 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) - Answers 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 - Answers Measurement of the average amount of utilization or traffic on a
network in a given monitoring period. (16)
AWG rating - Answers Describes the size of a conductor's diameter. (2)
backbone - Answers Connects the telecommuni-cation closets, equipment rooms, and main
entrance facility. (18)
backdoor - Answers Software access port to a computer infected by a Trojan horse
backplane - Answers Simple motherboard designed with minimal components. (9)
bandwidth - Answers Measurement of the network media's ability to carry data. (2)
Bandwidth Allocation Protocol (BAP) - Answers Allows the number of lines used by MLPPP to
change on demand. (14)
bandwidth shaper - Answers 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 - Answers Method of transmitting data in the form of a digital signal, using the entire
bandwidth of a cable. (2)
baseline - Answers 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 - Answers Term applied to the old system of hard disk drive configuration. (7)
Basic Rate ISDN (BRI-ISDN) - Answers 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) - Answers Group of wireless devices connected as a network. (4)
biometrics - Answers Science of using unique physical features of a person to con-firm that
person's identification for authentication purposes. (15)
bipolar digital signal - Answers Digital signal that fluctuates between a positive five-volt level
and a negative five-volt level. (5)
bit rate - Answers Number of bits used to repre-sent the amplitude of the analog signal. (12)
blackout - Answers Total loss of electrical energy. (16)
blade server - Answers Extremely thin server designed to allow a large number of servers to be
mounted in a small space. (9)
Bluetooth - Answers Short-range, wireless system that is designed for limited distances. (4)
boot loader - Answers Program that starts an op-erating system load process. (8)
boot partition - Answers Contains the files needed to operate the computer. (17)
Border Gateway Protocol (BGP) - Answers Internet routing protocol that supports the exchange
of routing information between autonomous networks. (11)
bridge - Answers Can be used to divide the network into smaller segments, reducing the chance
of collisions. (1)
broadband - Answers Method of transmitting data in the form of several analog signals at the
same time. (2)
Broadband ISDN (B-ISDN) - Answers ISDN category designed to carry multiple frequencies. (14)
broadcast frame - Answers Frame in which the destination address is filled with all ones;
intended for every computer on a network. (5)
broadcast storm - Answers Occurs when the number of collisions reaches a point that the
network is flooded with a continuous number of collisions and rebroadcasts. (6)
brouter - Answers Combines router and bridge functions. (1)
Latest Update 2025-2026
10Base2 - Answers Classification that specifies the use of RG-58 cable and a data rate of 10
Mbps. (2)
10Base5 - Answers First IEEE 802.3 classification developed for Ethernet. (2)
10BaseT - Answers Classification specifies the use of the diff erent categories of UTP cable. (2)
6to4 - Answers 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 - Answers Designed to test a person's knowledge related to PC support and
repair; pronounced A-plus. (20)
AAA proxy - Answers Network device that acts as an intermediary to exchange secu-rity packets
between the AAA server and the AAA client. (15)
absorption - Answers Occurs when intervening material absorbs some of the signal. (3)
access method - Answers Method of gaining ac-cess to the network media. (6)
access port - Answers Hub connection to which each network cable is connected. (1)
acoustical echo - Answers 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) - Answers Extension to the original ACPI standard. (9)
Active Directory (AD) - Answers Windows Server standard used to manage large and small
network systems. (7)
active hub - Answers Enhanced passive hub; also called an intelligent hub or switch. (1)
active partition - Answers Describes the partition that contains the operating system files the
computer should use to boot. (17)
adaptive cut-through - Answers Frame-forwarding technique that operates as cut-through until
an unaccept-able number of corrupt frames are detected. (11)
Address Resolution Protocol (ARP) - Answers Communication protocol that resolves an
assigned IPv4 network address to a physical address (MAC address). (6)
Address Resolution Protocol (ARP) - Answers Used to map the host MAC address to the logical
host IP address. (10)
ad hoc mode - Answers Wireless network arrangement in which a wireless access point is not
,present. (4)
administrative server - Answers Administers network security and activities. (1)
alien crosstalk (AXT) - Answers Measurement of noise introduced outside the cable jacket,
typically caused by other net-work cables in close proximity. (2)
American National Standards Institute (ANSI) - Answers Private, nonprofit organization that
does not develop standards, but rather prompts voluntary conformity and standardization. (1)
American Standard Code for Information Interchange (ASCII) - Answers Early attempt to
standard-ize data codes. (5)
amplifier - Answers Electronic device designed to raise a signal's amplitude. (2)
analog signal - Answers Signal that has a contin-uous range of values, much like a wave. (2)
analog-to-digital converter (ADC) - Answers Computer chip designed to change an analog signal
to a digital signal. (12)
anonymous FTP site - Answers Allows anyone to access the site and download or upload files.
(13)
ANT+ - Answers Function that can be added to base ANT protocols that allows for
interoperability; pronounced ant plus. (4)
anycast address - Answers IPv6 address that delivers packets to the nearest in-terface; mainly
used for supporting router functions. (10)
application gateway - Answers Provides security for specific applications such as FTP and
Telnet. (15)
application layer - Answers Interfaces directly to and performs common application services for
the application process-es; layer seven of the OSI model. (1)
archive bit - Answers Identifies if a file has changed since the last full or incremental backup.
(16)
asymmetric-key encryption - Answers Encryption method that uses two keys: a private key and a
public key; also known as public-key cryptography. (15)
asynchronous transfer mode (ATM) - Answers Protocol designed especially for transmitting
data, voice, and video. (1)
asynchronous transmission - Answers Data transmission method in which no reference signal
is present. (5)
attenuation - Answers Loss of signal strength. (1)
,auditing - Answers Service that tracks the events, use, and access of network resources and
writes these actions to a log. (7)
authentication - Answers 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) - Answers Security standard that consists
of three parts: authentication, authorization, and accounting; also known as triple A. (15)
Automatic Configuration and Power Interface (ACPI) - Answers Standard for controlling the
power options for computer hardware devices. (9)
automatic medium-dependent interface crossover (Auto-MDIX) - Answers 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) - Answers 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) - Answers 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 - Answers Measurement of the average amount of utilization or traffic on a
network in a given monitoring period. (16)
AWG rating - Answers Describes the size of a conductor's diameter. (2)
backbone - Answers Connects the telecommuni-cation closets, equipment rooms, and main
entrance facility. (18)
backdoor - Answers Software access port to a computer infected by a Trojan horse
backplane - Answers Simple motherboard designed with minimal components. (9)
bandwidth - Answers Measurement of the network media's ability to carry data. (2)
Bandwidth Allocation Protocol (BAP) - Answers Allows the number of lines used by MLPPP to
change on demand. (14)
bandwidth shaper - Answers 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 - Answers Method of transmitting data in the form of a digital signal, using the entire
bandwidth of a cable. (2)
baseline - Answers 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 - Answers Term applied to the old system of hard disk drive configuration. (7)
Basic Rate ISDN (BRI-ISDN) - Answers 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) - Answers Group of wireless devices connected as a network. (4)
biometrics - Answers Science of using unique physical features of a person to con-firm that
person's identification for authentication purposes. (15)
bipolar digital signal - Answers Digital signal that fluctuates between a positive five-volt level
and a negative five-volt level. (5)
bit rate - Answers Number of bits used to repre-sent the amplitude of the analog signal. (12)
blackout - Answers Total loss of electrical energy. (16)
blade server - Answers Extremely thin server designed to allow a large number of servers to be
mounted in a small space. (9)
Bluetooth - Answers Short-range, wireless system that is designed for limited distances. (4)
boot loader - Answers Program that starts an op-erating system load process. (8)
boot partition - Answers Contains the files needed to operate the computer. (17)
Border Gateway Protocol (BGP) - Answers Internet routing protocol that supports the exchange
of routing information between autonomous networks. (11)
bridge - Answers Can be used to divide the network into smaller segments, reducing the chance
of collisions. (1)
broadband - Answers Method of transmitting data in the form of several analog signals at the
same time. (2)
Broadband ISDN (B-ISDN) - Answers ISDN category designed to carry multiple frequencies. (14)
broadcast frame - Answers Frame in which the destination address is filled with all ones;
intended for every computer on a network. (5)
broadcast storm - Answers Occurs when the number of collisions reaches a point that the
network is flooded with a continuous number of collisions and rebroadcasts. (6)
brouter - Answers Combines router and bridge functions. (1)
