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WGU D278 PRE-ASSESSMENT SCRIPTING AND
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A programmer shows a program's first version to a customer. Based on feedback, the programmer creates a second version, and then has a colleague run the second version on numerous inputs to ensure outputs are correct. Which phase of an agile approach is that colleague carrying out? A Analysis B Design C Implementation D Testing - correct answer - Testing A programmer is currently programming the fourth version of a program. Each version has additional features to satisfy more customers.
In which phase of an agile approach does the programming of the fourth version occur? A Analysis B Design C Implementation D Testing - correct answer - Implementation What does a programmer do first to use an existing programming library? A Write the library's functions B Modify the library's functions C Include the library D Discard the library - correct answer - Include the library What relationship is common among a programming library's functions? A Functions all relate to the same purpose.
Which language is not built on object-oriented design principles? A C B C++ C Java D Python - 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? A Dynamically typed B Object-oriented C Markup D Statically typed - correct answer - Object-oriented
A programmer wants a compiler to report an error if an integer variable is assigned with a string. Which kind of language should the programmer use? A Dynamically typed B Object-oriented C Markup D Statically typed - 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? A Objects B Compiler C Script D Markup - correct answer - Markup
C They use memory more efficiently. D They create a separate file. - correct answer - They can be modified at run time. Which characteristic specifically describes a markup language? A Tags surround text to describe desired formatting. B A program's execution marks output with numbers and strings. C A compiler marks statements with 0's and 1's. D An interpreter executes statements one at a time. - correct answer - Tags surround text to describe desired formatting. Which characteristic specifically describes interpreted languages? A They are written using pseudocode. B They consist of a set of functions and objects. C They can be run one statement at a time. D They are converted to 0's and 1's. - correct answer - They can be run one statement at a time.
Which characteristic specifically describes interpreted languages? A They are drawn out using graphical diagrams. B They can run on any machine having the right interpreter. C They are compiled to machine code before being executed. D They substantially support decomposing a program into objects. - correct answer - They can run on any machine having the right interpreter. Which operator should be used to determine if a number is evenly divisible by 5? A + B - C * D % - correct answer - % A car drove 200 miles using 10 gallons of fuel.
B Float array C String array D Boolean array - correct answer - String Array A program uses the number of seconds in a minute in various calculations. How should the item that holds the number of seconds in a minute be declared? A Constant float userTime B Variable float userTime C Constant integer secondsPerMinute D Variable integer secondsPerMinute - correct answer - Constant Integer secondsPerMinute A program determines if a user's age is high enough to run for U.S. president. The minimum age requirement is 35. How should the item that holds the minimum age be declared? A Constant integer minAge
B Variable integer minAge C Constant integer 35 D Variable integer 35 - correct answer - Constant integer minAge Given integer x = 3 and integer y = 5. What is the value of the expression ( x / 2.0) + y? A 5. B 6. C 6. 7 7.5 - correct answer - 6. Given float x = 10.2 and float y = 1.0. What is the value of the expression x / y? A 0. B 1. C 10 D 10.2 - correct answer - 10.
D x / 2 + 0.5 /2 + .25 - correct answer - X/2+0.5/2+0. Which expression evaluates to true only when the user is within 3 years of 21 years, given a variable x containing a user's age? A x >= 18) or ( x <= 24) B ( x >= 18) and ( x <= 24) C ( x < 18) or ( x > 24) D ( x < 18) and ( x > 24) - correct answer - (X>=18) and (X<=24) Which data type is used for items that are measured in length? A Integer B Float C String D Boolean - correct answer - Float Which data type should be used to keep track of how many planes are in a hangar? A Integer B Float
C String D Boolean - correct answer - Integer A function should convert hours and minutes to seconds, such as converting 1 hour and 10 minutes to 4,200 seconds. What should be the input to the function? A Hours only B Minutes only C Hours and minutes D Hours, minutes, and seconds - correct answer - Hours and minutes A function returns a number x cubed. For example, if x is 3, the function returns 3 * 3 * 3, or 27. What should be the input to the function? A x B x, x C x, x, x D 27 - correct answer - X
Function F() Put "Hey" to output What entire output appears after three successive calls to F()? A Hey B HHHey C HeyHeyHey D Hey Hey Hey - correct answer - HeyHeyHey What is a valid user-defined function name? A A reserved word B Any valid identifier C Any variable name D A floating-point number - correct answer - Any valid identifier A function MyFct has an input x and an output z. What does MyFct return?
A Nothing B x only C z only D x and z - correct answer - Z only What is the return value of a function? A Output of a function B Call to run the function C Data passed to the function D Variable in the declaration of the function - correct answer - Output of a function A program should continue accepting input numbers, adding each to a sum, until a 0 is input. Which control structure should be used? A If statement B For loop C Multiple if statements D While loop - correct answer - While loop
while x > 0 A 3 2 1 0 B 3 2 1 0 - 1 C 2 1 0 D 3 2 1 - correct answer - 321 A programmer has developed the following code: count = 0 while count is less than 5: print 'Hello' What is the result of implementing this code? A 'Hello' will print four times. B 'Hello' will print five times. C The program will throw an error. D 'Hello' will print indefinitely. - correct answer - 'Hello' will print indefinitely
What is the loop expression in the following pseudocode? i = 0 while i < 20 Put i to output i = i + 1 A i B i<20 /> C i = 0 D i = i + 1 - correct answer - i<20/> What is the loop variable initialization in the following pseudocode? y = 0 s = 100. while y < 10 s = s + (s * 5.0) y = y + 1
