WGU D684 - Section 1(LATEST 2025/2026) STUDY GUIDE WITH
COMPLETE SOLUTIONS
Data
Raw facts and figures that can be processed to produce
meaningful information
Data Compression
The process of reducing the size of data to save space or
transmission time
Data Types
Categories of data that define what kind of value can be stored,
like Integers, Floats, and Strings, and how it can be used
Declaration
,a statement in programming that specifies the name and type
of a variable or function without assigning a value
Digital Data
Data represented by discrete binary values (zeroes and ones)
Floating Point
A way to represent real numbers that can have fictional parts
using a format that includes a base and exponent
Huffman Encoding
A compression technique that uses variable-length codes for
data represented on frequency of occurrence.
Information
data that have been processed or organized in a meaningful
way to be useful
Integer
a whole number
Keyword Encoding
a method of data compression that replaces frequently
occurring patterns with shorter codes
Lossless
a type of data compression where no information is lost and the
original data can be perfectly constructed
, Lossy
a type of data compression that reduces file size by
permanently eliminating some information, which may affect
quality
Analog Data
Data represented in a continuous and variable form
ASCII (American Standard Code for Information Interchange)
A standard encoding system for text characters that use
numeric values to represent letters, numbers, and symbols.
Bandwidth
The maximum rate of data transfer across a network or
communication channel.
Bandwidth
_____ is usually measured in bits per second.
Boolean expression
a logical statement that can only be true or false and uses
operators like AND, OR, and NOT
Character
a single letter, digit, or symbol used in writing text
Character Set
COMPLETE SOLUTIONS
Data
Raw facts and figures that can be processed to produce
meaningful information
Data Compression
The process of reducing the size of data to save space or
transmission time
Data Types
Categories of data that define what kind of value can be stored,
like Integers, Floats, and Strings, and how it can be used
Declaration
,a statement in programming that specifies the name and type
of a variable or function without assigning a value
Digital Data
Data represented by discrete binary values (zeroes and ones)
Floating Point
A way to represent real numbers that can have fictional parts
using a format that includes a base and exponent
Huffman Encoding
A compression technique that uses variable-length codes for
data represented on frequency of occurrence.
Information
data that have been processed or organized in a meaningful
way to be useful
Integer
a whole number
Keyword Encoding
a method of data compression that replaces frequently
occurring patterns with shorter codes
Lossless
a type of data compression where no information is lost and the
original data can be perfectly constructed
, Lossy
a type of data compression that reduces file size by
permanently eliminating some information, which may affect
quality
Analog Data
Data represented in a continuous and variable form
ASCII (American Standard Code for Information Interchange)
A standard encoding system for text characters that use
numeric values to represent letters, numbers, and symbols.
Bandwidth
The maximum rate of data transfer across a network or
communication channel.
Bandwidth
_____ is usually measured in bits per second.
Boolean expression
a logical statement that can only be true or false and uses
operators like AND, OR, and NOT
Character
a single letter, digit, or symbol used in writing text
Character Set
