Praxis Computer Sciences (correct answers)
Digital divide correct answers the gulf between those who have ready access to
computers and the Internet, and those who do not.
Solutions to digital divide correct answers *Increase affordability
*Empowering users improve the relevance of *online content Internet infrastructure
*developmentAddress gender gap in internet access
Creative Commons correct answers A kind of copyright that makes it easier for people
to copy, share, and build on your creative work, as long as they give you credit for it.
Open Source correct answers Software that is created for free use by everyone
Copyright correct answers the exclusive legal right, given to an originator or an
assignee to print, publish, perform, film, or record literary, artistic, or musical material,
and to authorize others to do the same.
Abstraction correct answers Reducing information and detail to focus on essential
characteristics.
Control abstraction correct answers Don't care "How" it gets done
Data Abstraction correct answers Representing or storing information with methods that
separate layers of concerns so that the programmer can work with information while
ignoring lower-level details about how the information is represented.
Abstraction allows.... correct answers you to modify "parts" of a program without
messing up the larger program
Abstraction Hierarchy correct answers Most general concepts on top of the hierarchy
and specific concepts on the bottom
pattern recognition correct answers looking for similarities among and within problems
Problem Decomposition correct answers The process of breaking a complex problem or
system into parts that are easier to conceive, understand, program, and maintain.
Binary correct answers The binary number system is base 2, using only bits 0 and 1.
Hexadecimal correct answers A base-16 number system that uses sixteen distinct
symbols 0-9 and A-F to represent numbers from 0 to 15.
natural language correct answers Person to Person
Oval (Flowchart) correct answers start/end
, Rectangle (flowchart) correct answers Action or process
Dimond (Flowchart) correct answers A choice
Arrow (flowchart) correct answers Direction of a choice
Rhombus (flowchart) correct answers Input / Output
Pseudocode correct answers Shorthand notation for programming
Algorithm Analysis correct answers A general process that determines the amount of
resources (such as time and storage) necessary to execute any particular algorithm,
most commonly using Big O notation, such as O(N) or O(N^2)
Linear Search correct answers Each item in the list is checked in order.
Binary Search correct answers An ordered list is divided in 2 with each comparison.
Bubble Sort correct answers Moving through a list repeatedly, swapping elements that
are in the wrong order.
Merge Sort correct answers A list is split into individual lists, these are then combined (2
lists at a time).
recursive algorithm correct answers solves a problem by breaking that problem into
smaller subproblems, solving these subproblems, and combining the solutions.
Randomization correct answers a process of randomly assigning subjects to different
treatment groups
Heuristic solution correct answers *A problem-solving technique which sacrifices
accuracy to increase speed
*Rules of Thumb
Linear Algorithm correct answers Sequential search, searches by checking each
element in a set.
Quadratic correct answers degree of 2
exponential function correct answers Constant ratio increase
logarithmic function correct answers What exponent is needed to get a number
control structure correct answers *An instruction that determines the order in which
other instructions in a program are executed
Digital divide correct answers the gulf between those who have ready access to
computers and the Internet, and those who do not.
Solutions to digital divide correct answers *Increase affordability
*Empowering users improve the relevance of *online content Internet infrastructure
*developmentAddress gender gap in internet access
Creative Commons correct answers A kind of copyright that makes it easier for people
to copy, share, and build on your creative work, as long as they give you credit for it.
Open Source correct answers Software that is created for free use by everyone
Copyright correct answers the exclusive legal right, given to an originator or an
assignee to print, publish, perform, film, or record literary, artistic, or musical material,
and to authorize others to do the same.
Abstraction correct answers Reducing information and detail to focus on essential
characteristics.
Control abstraction correct answers Don't care "How" it gets done
Data Abstraction correct answers Representing or storing information with methods that
separate layers of concerns so that the programmer can work with information while
ignoring lower-level details about how the information is represented.
Abstraction allows.... correct answers you to modify "parts" of a program without
messing up the larger program
Abstraction Hierarchy correct answers Most general concepts on top of the hierarchy
and specific concepts on the bottom
pattern recognition correct answers looking for similarities among and within problems
Problem Decomposition correct answers The process of breaking a complex problem or
system into parts that are easier to conceive, understand, program, and maintain.
Binary correct answers The binary number system is base 2, using only bits 0 and 1.
Hexadecimal correct answers A base-16 number system that uses sixteen distinct
symbols 0-9 and A-F to represent numbers from 0 to 15.
natural language correct answers Person to Person
Oval (Flowchart) correct answers start/end
, Rectangle (flowchart) correct answers Action or process
Dimond (Flowchart) correct answers A choice
Arrow (flowchart) correct answers Direction of a choice
Rhombus (flowchart) correct answers Input / Output
Pseudocode correct answers Shorthand notation for programming
Algorithm Analysis correct answers A general process that determines the amount of
resources (such as time and storage) necessary to execute any particular algorithm,
most commonly using Big O notation, such as O(N) or O(N^2)
Linear Search correct answers Each item in the list is checked in order.
Binary Search correct answers An ordered list is divided in 2 with each comparison.
Bubble Sort correct answers Moving through a list repeatedly, swapping elements that
are in the wrong order.
Merge Sort correct answers A list is split into individual lists, these are then combined (2
lists at a time).
recursive algorithm correct answers solves a problem by breaking that problem into
smaller subproblems, solving these subproblems, and combining the solutions.
Randomization correct answers a process of randomly assigning subjects to different
treatment groups
Heuristic solution correct answers *A problem-solving technique which sacrifices
accuracy to increase speed
*Rules of Thumb
Linear Algorithm correct answers Sequential search, searches by checking each
element in a set.
Quadratic correct answers degree of 2
exponential function correct answers Constant ratio increase
logarithmic function correct answers What exponent is needed to get a number
control structure correct answers *An instruction that determines the order in which
other instructions in a program are executed
