D278 EXAMINATION QUESTIONS AND ANSWERS
Moore's Law - Engineers have reduced switch sizes by half about every 2 years.
bit - A single 0 or 1.
byte - A single 0 or 1.
ASCII - American Standard Code for Information Interchange. Code that is the numerical
representation of a character. Ex. Z would be stored in a computer as 1011010.
pseudocode - Text that resembles a program in a real programming language but is
simplified to aid human understanding.
assignment statement - Assigns a variable with a value, such as X=5.
variable declaration - Declares a new variable, specifying the variable's name and type.
integer - Variable type that can hold whole numbers.
expression - Can be a number, a variable name (numApples), or a simple calculation like
(numApples + 1).
identifier - A name created by a programmer for an item like a variable or function. Must
be a sequence of letters, underscores, and digits or start with a letter or underscore. They are
case sensitive.
reserved word (for keyword) - A word that is part of the language, like integer, Get or Put.
These words cannot be used as an identifier.
reserved word (for keyword) -
Moore's Law - Engineers have reduced switch sizes by half about every 2 years.
bit - A single 0 or 1.
byte - A single 0 or 1.
ASCII - American Standard Code for Information Interchange. Code that is the numerical
representation of a character. Ex. Z would be stored in a computer as 1011010.
pseudocode - Text that resembles a program in a real programming language but is
simplified to aid human understanding.
assignment statement - Assigns a variable with a value, such as X=5.
variable declaration - Declares a new variable, specifying the variable's name and type.
integer - Variable type that can hold whole numbers.
expression - Can be a number, a variable name (numApples), or a simple calculation like
(numApples + 1).
identifier - A name created by a programmer for an item like a variable or function. Must
be a sequence of letters, underscores, and digits or start with a letter or underscore. They are
case sensitive.
reserved word (for keyword) - A word that is part of the language, like integer, Get or Put.
These words cannot be used as an identifier.
reserved word (for keyword) -
