D278 Exam UPDATED QUESTIONS AND
CORRECT ANSWERS
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
A language substantially supports a programmer creating items like person, teacher, and students.
Each item has internal data and some operations.
Which characteristic describes that language? - CORRECT ANSWER Object-oriented
A programmer wants a compiler to report an error if an integer variable is assigned with a string.
Which type of language should the programmer use? - CORRECT ANSWER Statically Typed
A language uses tags around text to indicate how that text should be formatted.
Which characteristic describes a language having such tags? - CORRECT ANSWER Markup
What is a characteristic of compiled language? - CORRECT ANSWER Converts to machine
language before running
, What is a characteristic of interpreted programs? - CORRECT ANSWER They can be
modified at run time
Which characteristic specifically describes a markup language? - CORRECT ANSWER Tags
surround text to describe desired formatting
Which characteristic specifically describes interpreted language? - CORRECT ANSWER They
can run on any machine having the right interpreter
Which data type is used for items that are measured in length? - CORRECT ANSWER Float
What is the purpose of parentheses () in a programming expression? - CORRECT ANSWER
To group expressions
Which data type should be used to keep track of how many planes are in a hanger? - CORRECT
ANSWER Integer
What is a valid user-defined function name? - CORRECT ANSWER Variable identifier
What is the return value of a function? - CORRECT ANSWER Output of a function
When should a programmer develop an algorithm to solve a problem? - CORRECT ANSWER
Before writing a program to solve the problem.
Which phase of a waterfall approach would create a sequence diagram that specifies the required
order of events between completed program components? - CORRECT ANSWER Testing
Which phase of an agile approach would define a hypothesis to find a problem in a program? -
CORRECT ANSWER Testing
Which phase of an agile approach would create an executable program? - CORRECT ANSWER
Implementation
CORRECT ANSWERS
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
A language substantially supports a programmer creating items like person, teacher, and students.
Each item has internal data and some operations.
Which characteristic describes that language? - CORRECT ANSWER Object-oriented
A programmer wants a compiler to report an error if an integer variable is assigned with a string.
Which type of language should the programmer use? - CORRECT ANSWER Statically Typed
A language uses tags around text to indicate how that text should be formatted.
Which characteristic describes a language having such tags? - CORRECT ANSWER Markup
What is a characteristic of compiled language? - CORRECT ANSWER Converts to machine
language before running
, What is a characteristic of interpreted programs? - CORRECT ANSWER They can be
modified at run time
Which characteristic specifically describes a markup language? - CORRECT ANSWER Tags
surround text to describe desired formatting
Which characteristic specifically describes interpreted language? - CORRECT ANSWER They
can run on any machine having the right interpreter
Which data type is used for items that are measured in length? - CORRECT ANSWER Float
What is the purpose of parentheses () in a programming expression? - CORRECT ANSWER
To group expressions
Which data type should be used to keep track of how many planes are in a hanger? - CORRECT
ANSWER Integer
What is a valid user-defined function name? - CORRECT ANSWER Variable identifier
What is the return value of a function? - CORRECT ANSWER Output of a function
When should a programmer develop an algorithm to solve a problem? - CORRECT ANSWER
Before writing a program to solve the problem.
Which phase of a waterfall approach would create a sequence diagram that specifies the required
order of events between completed program components? - CORRECT ANSWER Testing
Which phase of an agile approach would define a hypothesis to find a problem in a program? -
CORRECT ANSWER Testing
Which phase of an agile approach would create an executable program? - CORRECT ANSWER
Implementation
