AP CSP - Unit 5 Test

B. True/False

A Boolean expression is an expression that evaluates to which of the of the following?

D. 125

A programmer designed a program for an airline to determine whether there is an extra fee on a checked bag. The logic is shown in the flow chart at right. The code they wrote (see below) runs without error, but unfortunately it does not work as intended. What is the problem? Consider the list of values below and choose two that if assigned to weight will result in the incorrect message being displayed as the response (choose 2)?

When might a programmer create a global variable instead of a local variable?

A programmer might create a global variable so they can use the variable throughout the entire program.

IF (hour >= 8) AND (hour <= 15) { DISPLAY ("Nice to see you!") } ELSE{ DISPLAY ("It's time to go home!") }

A pseudocode program is started below that asks the user for input and stores the value in a variable. Continue writing pseudocode to accomplish this task: If the hour is within the school day (8 to 15) then display "Nice to see you!", Otherwise, display "It's time to go home!

Which of the following is FALSE about element IDs?

A. An element with a unique ID must always have an event handler associated with it.

Which of the following is FALSE about event-driven programs?

A. Event-driven programs do not implement algorithms.

D. (temperature == 0) || (temperature > 32) E. (temperature < 0) || (temperature >32)

Assume that a variable temperature is assigned like this: var temperature = 30; Choose the two (2) Boolean expressions that evaluate to FALSE.

Which of the following are actions a programmer could take when debugging a segment of code that would most likely lead to finding a problem and fixing it? (choose two)

B. Display the value of variables at various points during the program. C. Ask a friend or collaborator to look over the code segment to see if they are able to find any errors.

Consider the code segment below: What are the values of a, b, and c after this code segment has been run?

B. a- 4, b- 8, c- 8

A student decides to draw a series of three dots (sort of like a snowman) as shown in the diagram. She wants each dot to be half the radius of the previous dot, and for the center to be on the edge of the dot below it. She writes the following code segment to do it: She is not sure about the size though, and wants to be able to quickly experiment with the drawing by changing only one number - the radius of the bottom dot - and for the rest of the code to size and scale the drawing accordingly. How should she adjust lines 2 and 3 of her code to implement this change?

C. 2 var middle = bottom / 2 3 var top = middle /2

Consider the code segment below: Which of the following images is the most likely outcome of the drawing?

C. (four small circles connected into a square)

Jasmine is writing a shopping app. She has created a variable to keep track of the number of items in the shopping cart. Every time someone clicks the "addItemButton", she would like the variable to increase by 1. What code should Jasmine insert where it says <missing code> in order for her app to work?

C. cartTotal = cartTotal +1;

C. (day == "Saturday") || (day == "Sunday")

Consider the JavaScript code segment below. Which statement should be used in place of <missing code> such that the alarm is set to 9:00 am on weekends, and 6:30 am on weekdays.

C. The code will display the largest of the three values

Consider the code segment below given in pseudo code (see reference above). Assuming that variables a, b and c already have numeric values assigned to them, what is the expected output of this code segment?

D. There is no value of time that will result in "Good Morning" being displayed

Consider the following JavaScript code segment. Something is wrong with the logic in the program above. For which values of time will the greeting "Good Morning" be displayed?

D. 10

Consider the following flow chart showing a process for program execution. Given that a = 5, and b = 10, what will be displayed by the program?

A. You passed! (apparently this is the answer according to Quia)

Consider the following segment given in pseudo code (see reference from previous question): What will be displayed if grade is set to 70?

Jose is writing a reply function for a text messaging app. He'd like to swap the sender and receiver so that the value currently in variable From ends up as the value in To and To ends up in From Which of the following code segments will correctly swap the values as described?

D. var temp = from; from = to; to = temp;

What is the output to the console after the following code segment is executed?

D. 13

A programmer wrote an essay for his history class, and realized he has confused the names of Benjamin Franklin and Alexander Graham Bell. Instead of going through the whole paper and changing the names, he used the following incorrect algorithm in an attempt replace every occurrence of "Benjamin Franklin" with "Alexander Graham Bell" and vise versa: Which of the following is the result of running the described incorrect algorithm on the sentence above?

D. Benjamin Franklin was born 141 years before Benjamin Franklin, so he was never able to telephone his neighbors.

What is displayed by the console.log statement after the following code segment executes?

D. value is: 4

What is the output to the console after the following code segment is executed?

E. Error. Unknown Identifier: x

C. Use that word on the SAT.

If the above code segment is run, and "goodbye" is entered into the prompt, what will be displayed in the console?

D. I have never heard that before.

In JavaScript you can find the number of characters in String by using .length. For example: For the next two questions, consider the following JavaScript code segment. If the above code segment is run, and "hello" is entered at the prompt, what will be displayed in the console?

Two students, Kaleb and Hunter, are arguing in class about an App Lab project. Kaleb states, "Huh, a button and an image are basically the same thing!". Hunter replies, "That doesn't make any sense at all!". Explain what Kaleb may have meant by that statement.

Kaleb might have meant that by clicking either the button or the image, there is a possibility that the click could respond by executing lines of code intended to be ran when the image or button was clicked. Both the button and the image can be used to trigger these responses, but a button is preferable.

C.

What is a possible output when the following code segment executes? The ending position of the turtle is shown in each diagram. The starting position is shown as a white triangle in cases where the turtle starts and ends in different locations.

E. You are old enough to be President!

What is the expected output of the given pseudo code segment? A reference for the pseudo code can be found immediately below the question

A. 5hello

What is the output of the following JavaScript code segment?

C. 55

What is the output of the following JavaScript code segment?

D. console.log("Hello! \nHow are you?");

Which of the following JavaScript statements will result in the following output being displayed to the console?

C. Strings with numerical digits in them are invalid.

Which of the following statements about strings in JavaScript is FALSE?