Units 6 and 7 Flashcard

Front

A school is developing a program to keep track of information about students and their class schedules. In which of the following instances would a data abstraction be most helpful? The program includes individual variables to store the names of each student rather than a single list of students. A program includes multiple comments that could be combined into a single comment. A program includes repeated programming statements that could be moved inside a loop. A program includes repeated code that could be moved inside a function.

Back

The program includes individual variables to store the names of each student rather than a single list of students.

Front

Which of the following will result in ONLY all the items in list being printed to the console if placed where the program reads and the program is run? Options: i < list.length, i <= list.length, i < list[0], i < list[1]

Back

i < list.length

Front

What will be displayed in the console when this program runs? Options: 2, 3, 20, 30

Back

30

Front

What will be displayed when this program finishes running? Options: 3, 6, 7, 5

Back

5

Front

What will be displayed in the console when the following program runs? Options: 0 2 4 6, 0 2 4, 2 4 6, The program will result in an infinite loop

Back

The program will result in an infinite loop

Front

What will the following program display in the console?
for(var i = 0; i < 4; i++){
console.log(i);
}

Back

0 1 2 3

Front

What will the following program display in the console?
var sum = 0;
for(var i = 0; i < 5; i++){
sum = sum + i;
}
console.log(sum);

Back

10

Front

The following question uses a robot in a grid of squares. The robot is represented by a triangle, which is initially facing up. Which of the following programs will move the robot to the gray square following the path shown on the grid?

Back

Front

Which of the following programs will result in filteredNames only containing the names of students who are 17 or older? Options: for(var i = 0; i < ages.length; i++){ age = ages[i]; if(age < 17){ appendItem(filteredNames, age)} } , for(var i = 0; i < ages.length; i++){ age = ages[i]; if(age < 17){ appendItem(filteredNames, names[i])} } , for(var i = 0; i < ages.length; i++){ age = ages[i]; if(age >= 17){ appendItem(filteredNames, age)} } , for(var i = 0; i < ages.length; i++){ age = ages[i]; if(age >= 17){ appendItem(filteredNames, names[i])} }

Back

for(var i = 0; i < ages.length; i++){ age = ages[i]; if(age >= 17){ appendItem(filteredNames, names[i])} }

Front

Which of the following is NOT a possible combination of values of the variables in this program when it finishes running? tails has a value of 0 and heads has a value of 100, tails has a value of 100 and heads has a value of 0, tails has a value of 20 and heads has a value of 20, tails has a value of 50 and heads has a value of 50

Back

tails has a value of 20 and heads has a value of 20