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D278 PRE-ASSESSMENT SCRIPTING AND
PROGRAMMING FOUNDATIONS
Which operator should be used to determine if a number is evenly divisible by 5? A + B - C * D % - Answer - % A car drove 200 miles using 10 gallons of fuel. Which operation should be used to compute the miles per gallon, which is 20? A Addition B Subtraction C Multiplication D Division - Answer - Division A variable should hold a person's height in meters. Which data type should the variable be? A Integer B Float C String D Boolean - Answer - Float A variable should hold the names of all past U.S. presidents. Which data type should the variable be? A Integer array B Float array C String array D Boolean array - 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 - 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 - 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 - 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 - Answer - 10. What kind of operator is the == in the expression i == 20? A Assignment B Arithmetic C Equality D Logical - Answer - Equality What is the purpose of parentheses () in a programming expression? A To print expressions B To group expressions C To run expressions D To compose expressions - Answer - To group expressions Given float x = 3.0. Which expression evaluates to 2.0? A x / 3 * 2 + 2 B x - 2/ C x + 0.5 / D x / 2 + 0.5 /2 + .25 - Answer - D 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) - Answer - B
D 25 - Answer - C 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 - Answer - C 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 - Answer - B 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 - Answer - C 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 - Answer - A 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 - Answer - D Joe is building an online game. He wants to provide a riddle and have the player guess the answer. The game needs to prompt the user to enter the answer, check to see if it the input provided does not match the correct answer, and continue prompting the user until the answer entered matches the correct answer. Which control structure supports Joe's needs?
A For loop B While loop C Do-while loop D If-else branch - Answer - C What is put to output by the following pseudocode? x = 3 do Put x to output Put " " to output x = x - 1 while x > 0 A 3 2 1 0 B 3 2 1 0 - 1 C 2 1 0 D 3 2 1 - Answer - D 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. - Answer - D 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 - Answer - B What is the loop variable initialization in the following pseudocode? y = 0 s = 100.
What does the following algorithm accomplish? x = Get next input if x == - 1 Put "Goodbye" to output A Outputs - 1 when user types any input B Outputs "x" when user types - 1 C Outputs - 1 when x is positive D Outputs Goodbye when user types - 1 - Answer - D What does an output of 1 indicate for the following algorithm running on a five-element list of integers? i = 0 x = 0 while i < 5 if list[i] < 0 x = 1 i = i + 1 Put x to output A All integers are positive. B All integers are negative. C At least one integer is negative. D At least one integer is positive. - Answer - C When should a programmer develop an algorithm to solve a problem? A Before knowing the problem B Before writing a program to solve the problem C While writing a program to solve the problem D After writing a program to solve the problem - Answer - B Which text represents an algorithm? A Cats and dogs have tails. B Insert key, turn key, open door. C The forecast for tomorrow is rain. D A box has balls, bats, and hats. - Answer - B Which text represents an algorithm? A Shake bulb; if it rattles, replace it. B Water is wet; fire is not wet. C Staring at the sun hurts the eyes.
D The max speed is 60 mph. - Answer - A An algorithm should output "OK" if a list's numbers are all non-zero, else the output is "Not OK." Which test is a valid test of the algorithm? A Input 0, 0, 0. Ensure output is "OK." B Input 5, 4, 0. Ensure output is "OK." C Input - 3, - 2, 5. Ensure output is "Not OK." D Input 99, 0, 5. Ensure output is "Not OK." - Answer - D What is put to output by the following flowchart, if the input is 17? A Too young B OK C Too old D Nothing is put to output. - Answer - B What is put to output by the following flowchart, if the input is 3 5 - 1? A 3 5 - 1 B 3 5 C 6 10 D 6 10 - 2 - Answer - C What is the purpose of the following class diagram? A Shows how the Employee class is used in the program B Describes the execution flow of the Employee class' operations C Specifies the Employee class' behavioral requirements D Depicts the Employee class' name, data members, and functions - Answer - D What is the purpose of a use case diagram, such as the following diagram? A Describes how a user can interact with a program B Describes the data used in the program C Illustrates the flow of the program's algorithms D Shows the interaction between program components - Answer - A Which elements are characteristic of a class diagram? A System's classes, attributes, and methods and their features, constraints, and relationships B Flow of logic and process interaction within a system C Physical resources or logical architecture of a system
B Design C Implementation D Testing - Answer - A After a programmer is done writing a program, another person runs the program hundreds of times, each time with different input, checking that each run yields correct output. Which phase of a waterfall approach is the person carrying out? A Analysis B Design C Implementation D Testing - Answer - D A programmer decides a program should convert U.S. units to metric units and decides to write the program in C++ using several functions. Which phase of a waterfall approach is occurring when the programmer starts writing the program? A Analysis B Design C Implementation D Testing - Answer - C A company has a new project it wishes to implement to track and analyze employee and customer interactions. The company leadership determines that the system should support direct data entry as well as automated data capture of phone calls and emails. Which phase of the waterfall process is occurring? A Analysis B Design C Implementation D Testing - Answer - A A programmer shows a program's first version to a customer. The customer provides feedback, which causes the programmer to change the goals of the program. In which phase of an agile approach are goals changed based on customer feedback? A Analysis B Design C Implementation D Testing - Answer - A
A programmer shows a program's first version to a customer. Based on feedback, the programmer begins writing a second version of the program. In which phase of an agile approach does the writing of a second version of the program occur? A Analysis B Design C Implementation D Testing - Answer - C 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 - Answer - D 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 - Answer - C 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 - Answer - C What relationship is common among a programming library's functions? A Functions all relate to the same purpose. B Each function competes with the other function. C Each function fixes bugs in the other functions. D Every function performs the identical computation. - Answer - A
A Objects B Compiler C Script D Markup - Answer - D What is a characteristic of a compiled language? A Runs one statement at a time by another program B Is slower than an interpreted language C Converts to machine language before running D Runs on any machine having an interpreter - Answer - C What is a characteristic of an interpreted language? A Runs faster than compiled languages B Outputs an interpreter to run the program C Runs easily on different kinds of machines D Needs to be converted to machine code first - Answer - C What is an advantage of interpreted programs? A They generally run faster than compiled programs. B They can be modified at run time. C They use memory more efficiently. D They create a separate file. - Answer - B 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. - Answer - A 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. - Answer - C 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. - Answer - B
