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D278 (Latest Update ) Pre-Assessment Questions with 100- Correct Answers– WGU

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Course D278 (D278)
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Note about integer literal - correct answer Commas are not allowed, so 1,333,555 must be written as 1333555. Incremental development - correct answer The process of writing, compiling, and testing a small amount of code, then writing, compiling, and testing a small amount more (an incremental amount), and so on. Floating-point number - correct answer A real number, like 98.6, 0.0001, or -666.667. Floating-point literal - correct answer A number with a fractional part, even if that fraction is 0, such as 1.0, 0.0, or 99.573. Function - correct answer A list of statements executed by invoking the function's name, with such invoking known as a function call. Type conversion - correct answer A conversion of one data type to another, such as an integer to a float. Implicit conversion - correct answer When a program automatically performs several common conversions between integer and float types (as well as others). Type cast - correct answer Converts a value of one type to another type. String - correct answer A sequence of characters, like "Hello". Boolean - correct answer Refers to a quantity that has only two possible values, true or false. Array - correct answer An ordered list of items of a given data type, like an array of integers or an array of floats. Array indices start from 0, not 1. Constant - correct answer A named value item that holds a value that cannot change. Element - correct answer Each item in an array. Index - correct answer In an array, each element's location number. Scalar variable - correct answer A single-item (non-array) variable. Branch - correct answer A sequence of statements only executed under a certain condition. Nested branches - correct answer A branch's statements can include any valid statements, including another if-else branch.

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D278 (Latest Update ) Pre-
Assessment Questions with 100% Correct
Answers– WGU


What is a behavioral sequence diagram? - correct answer It shows interactions
between software components and indicates the order of events.


What are the equivalent UML diagrams used in SDLC phases?
1. Analysis
2. Design
3. Implementation
4. Testing - correct answer A Case Diagram, a Class Diagram, Flowchart (Activity
Diagram), and a Sequence Diagram (respectively)


SDLC - Define the Analysis Phase - correct answer Defines a program's goals


SDLC - Define the Design Phase - correct answer Defines specifics of how to build a
program


SDLC - Define the Implementation Phase - correct answer Involves writing the
program


SDLC - Define the Testing Phase - correct answer Checks that the program correctly
meets goals


What is a popular Markup Language? - correct answer HTML: describes texts, links,
images, and other features

, D278 (Latest Update ) Pre-
Assessment Questions with 100% Correct
Answers– WGU

What is a characteristic of Interpreted/Scripting Language - correct answer
Dynamically typed - changing variables


What is an advantage of Interpreted/Scripting Language - correct answer Runs on
most machines with an interpreter


What is a characteristics of a Compiled Language? - correct answer Statically-typed -
constant variable declaration


What is an advantage of a Compiled Language? - correct answer Runs faster than
interpreted language

What does a programmer do first to use an existing programming library? - correct
answer Include the library


What relationship is common among a programming library's functions? - correct
answer Functions all relate to the same purpose.


What is an advantage of using a programming library? - correct answer The code has
already been tested.


Which language is dynamically typed? - correct answer Python


Which language is not built on object-oriented design principles? - correct answer C

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