WGU D413 – TELECOMMUNICATIONS &
WIRELESS COMMUNICATIONS OBJECTIVE
ASSESSMENT | OA V1 AND V2 |EXAM WITH
ACTUAL CORRECT QUESTIONS AND VERIFIED
DETAILED ANSWERS|FREQUENTLY TESTED
QUESTIONS AND
SOLUTIONS|NEWEST|GUARANTEED PASS
2026/2027
cellular technology
Based on radio waves connecting to designated areas referred to as cells. (4)
centralized administration
Administration model in which the administrator does not have to go to each server to perform
administrative tasks. (1)
certificate authority (CA)
Service that contains the security list of users authorized to access the private key owner's messages,
using a public key. (15)
Challenge Handshake Authentication Protocol (CHAP)
Authentication protocol that sends an encrypted string of characters representing the user name and
password. (15)
channel
Bandwidth of a carrier wave. (4)
channel bonding
Method whereby two or more links are combined. (4)
Channel Service Unit/Data Service Unit (CSU/DSU)
Converts signals from the LAN into signals that can be carried by the T1 line, and vice versa. (14)
circuit switching
Data-routing method that establishes a permanent connection between two points for the duration of
the data transfer period. (5)
circuit-level gateway
1|Page
,Monitors a connection until the connection is successfully established between the destination and
source hosts. (15)
Cisco Discovery Protocol (CDP)
Variation of LLDP designed to sup-port equipment such as Cisco rout-ers, switches, and telephones. (6)
Class A network
Can support up to 16 million hosts on each of 127 net-works. (10)
Class B network
Supports up to 65,000 hosts on each of 16,000 networks. (10)
Class C network
Supports 254 hosts on each of 2 million networks. (10)
Classless Inter-Domain Routing (CIDR)
Uses a special notation to identify which part of an IP address is the network portion. (11)
client/server network
Consists of computers connected via a network to one or more servers. (1)
cluster
Group of servers that share the network demand. (16)
coaxial cable
Consists of a copper-core conductor surrounded by an insulator referred to as a dielectric; also known as
coax cable. (2)
codec
Term used to represent software, hardware, or combination of soft-ware and hardware that compress
and decompress video and audio information; name stems from compressor/decompressor. (12)
cold spare
Any compatible disk drive that is in storage and is used to replace a failed disk drive. (16)
collision domain
Section of a network where collisions occur; also known as a contention domain. (6)
command prompt
Text-based interface in which commands are typed and entered in a command-line environ-ment. (6)
command syntax
Correct manner and arrangement in which a command is to be typed. (6)
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,committed information rate (CIR)
Guaranteed bandwidth a com-mercial carrier will provide to a subscriber. (12)
Common UNIX Printing System (CUPS)
Daemon designed to support network printing using the Internet Printing Protocol (IPP). (8)
complex trust relationship
Type of trust relationship in which more than two domains have a full-trust relationship. (7)
consolidation point (CP)
Connection to the horizontal wiring system. (18)
constant bit rate (CBR)
ATM data transfer classification in which a steady stream of ATM cells moves at a predictable rate. (12)
consultant
Works with clients on proj-ects and makes recommendations based on his or her expertise. (20)
content filter
Configured to block web-sites or packet contents that contain specific terms. (15)
contiguous namespace
Namespace that uses the root domain name as part of its URL or as its complete name. (7)
continuous UPS
Type of UPS that provides a steady supply of electrical energy at all times, even when there is no
electrical problem. (16)
convergence
State that occurs when all dynamic routing tables contain the same information; also known as steady
state. (11)
copper-core cable
Consists of a copper wire surrounded by plastic or synthetic insulation. (1)
cover letter
Formal communication that accompanies a person's résumé or job application. (20)
crossed pair
Occurs when one of each of the two cable pairs has become part of the other pair's connection. (2)
crossover cable
3|Page
, Constructed with two pairs (four individual conductors) that are cross-connected; used to connect a
computer to another computer. (2
crosstalk
Interference that comes from neighboring conductors inside a wire's insulating jacket. (2)
cut-through
Method of frame forward-ing in which the frame is forwarded immediately after receiving it; also known
as a low latency. (11)
cyclic redundancy check (CRC)
Based on the same principle for error detection as a parity check but uses mathematical algorithms to
deter-mine if any bits are corrupt. (5)
daemon
Program that runs in the background and waits for a client to request its services
data encryption
Encoding of data based on a mathematical formula, which converts the original data symbol into
another symbol. (5)
data link layer
Describes how raw data is packaged for transfer from one network interface card to another; layer two
of the OSI model. (1)
database server
Contains data files and software programs that query the data. (1)
dead drop
Cable that does not provide a complete path back to the patch panel, resulting in a lack of connection.
(17)
decentralized administration
Networking administration model in which administration is spread across the entire network. (1)
decibel (dB)
Unit of measurement that expresses the relationship of power between two electrical forces. (2)
dedicated server
Server that provides a single function. (1)
default gateway address
Address of the computer that provides a con-nection to the Internet. (10)
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WIRELESS COMMUNICATIONS OBJECTIVE
ASSESSMENT | OA V1 AND V2 |EXAM WITH
ACTUAL CORRECT QUESTIONS AND VERIFIED
DETAILED ANSWERS|FREQUENTLY TESTED
QUESTIONS AND
SOLUTIONS|NEWEST|GUARANTEED PASS
2026/2027
cellular technology
Based on radio waves connecting to designated areas referred to as cells. (4)
centralized administration
Administration model in which the administrator does not have to go to each server to perform
administrative tasks. (1)
certificate authority (CA)
Service that contains the security list of users authorized to access the private key owner's messages,
using a public key. (15)
Challenge Handshake Authentication Protocol (CHAP)
Authentication protocol that sends an encrypted string of characters representing the user name and
password. (15)
channel
Bandwidth of a carrier wave. (4)
channel bonding
Method whereby two or more links are combined. (4)
Channel Service Unit/Data Service Unit (CSU/DSU)
Converts signals from the LAN into signals that can be carried by the T1 line, and vice versa. (14)
circuit switching
Data-routing method that establishes a permanent connection between two points for the duration of
the data transfer period. (5)
circuit-level gateway
1|Page
,Monitors a connection until the connection is successfully established between the destination and
source hosts. (15)
Cisco Discovery Protocol (CDP)
Variation of LLDP designed to sup-port equipment such as Cisco rout-ers, switches, and telephones. (6)
Class A network
Can support up to 16 million hosts on each of 127 net-works. (10)
Class B network
Supports up to 65,000 hosts on each of 16,000 networks. (10)
Class C network
Supports 254 hosts on each of 2 million networks. (10)
Classless Inter-Domain Routing (CIDR)
Uses a special notation to identify which part of an IP address is the network portion. (11)
client/server network
Consists of computers connected via a network to one or more servers. (1)
cluster
Group of servers that share the network demand. (16)
coaxial cable
Consists of a copper-core conductor surrounded by an insulator referred to as a dielectric; also known as
coax cable. (2)
codec
Term used to represent software, hardware, or combination of soft-ware and hardware that compress
and decompress video and audio information; name stems from compressor/decompressor. (12)
cold spare
Any compatible disk drive that is in storage and is used to replace a failed disk drive. (16)
collision domain
Section of a network where collisions occur; also known as a contention domain. (6)
command prompt
Text-based interface in which commands are typed and entered in a command-line environ-ment. (6)
command syntax
Correct manner and arrangement in which a command is to be typed. (6)
2|Page
,committed information rate (CIR)
Guaranteed bandwidth a com-mercial carrier will provide to a subscriber. (12)
Common UNIX Printing System (CUPS)
Daemon designed to support network printing using the Internet Printing Protocol (IPP). (8)
complex trust relationship
Type of trust relationship in which more than two domains have a full-trust relationship. (7)
consolidation point (CP)
Connection to the horizontal wiring system. (18)
constant bit rate (CBR)
ATM data transfer classification in which a steady stream of ATM cells moves at a predictable rate. (12)
consultant
Works with clients on proj-ects and makes recommendations based on his or her expertise. (20)
content filter
Configured to block web-sites or packet contents that contain specific terms. (15)
contiguous namespace
Namespace that uses the root domain name as part of its URL or as its complete name. (7)
continuous UPS
Type of UPS that provides a steady supply of electrical energy at all times, even when there is no
electrical problem. (16)
convergence
State that occurs when all dynamic routing tables contain the same information; also known as steady
state. (11)
copper-core cable
Consists of a copper wire surrounded by plastic or synthetic insulation. (1)
cover letter
Formal communication that accompanies a person's résumé or job application. (20)
crossed pair
Occurs when one of each of the two cable pairs has become part of the other pair's connection. (2)
crossover cable
3|Page
, Constructed with two pairs (four individual conductors) that are cross-connected; used to connect a
computer to another computer. (2
crosstalk
Interference that comes from neighboring conductors inside a wire's insulating jacket. (2)
cut-through
Method of frame forward-ing in which the frame is forwarded immediately after receiving it; also known
as a low latency. (11)
cyclic redundancy check (CRC)
Based on the same principle for error detection as a parity check but uses mathematical algorithms to
deter-mine if any bits are corrupt. (5)
daemon
Program that runs in the background and waits for a client to request its services
data encryption
Encoding of data based on a mathematical formula, which converts the original data symbol into
another symbol. (5)
data link layer
Describes how raw data is packaged for transfer from one network interface card to another; layer two
of the OSI model. (1)
database server
Contains data files and software programs that query the data. (1)
dead drop
Cable that does not provide a complete path back to the patch panel, resulting in a lack of connection.
(17)
decentralized administration
Networking administration model in which administration is spread across the entire network. (1)
decibel (dB)
Unit of measurement that expresses the relationship of power between two electrical forces. (2)
dedicated server
Server that provides a single function. (1)
default gateway address
Address of the computer that provides a con-nection to the Internet. (10)
4|Page
