Midterm Test

Question 1

The math.sqrt() function can compute the square root of a negative number.

Answer 1

False

Question 2

The central processing unit (CPU) is the “eyes” of a computer.

Answer 2

False -it is the brain

Question 3

The bool data type embodies the mathematical concept of a real number.

Answer 3

False

Question 4

An algorithm is a step by step set of directions that is independent of the programming language.

Answer 4

True

Question 5

Information that is stored and manipulated by computers is called pipen.

Answer 5

False

Question 6

Aliasing occurs when two variables refer to the same object.

Answer 6

True

Question 7

Since floating point numbers are extremely accurate, they should generally be used instead of integers.

Answer 7

False

Question 8

A single point on a graphics screen is called a bit.

Answer 8

False

Question 9

Using eval can make your program insecure as a user could type malicious code and eval will execute it.

Answer 9

True

Question 10

Python functions can never modify a parameter.

Answer 10

False

Question 11

In the code

celsius = (fahrenheit * 9/5) + 32

celsius is an example of a(n)

Answer 11

Variable

Question 12

In Python, the function heading begins with _______ and ends with a ________.

Answer 12

def ….. colon(:)

Question 13

What is the set of values provided by this expression:

range(15, 3, -3)

Answer 13

{15,12,9,6}

Question 14

What is the fundamental question of computer science?

Answer 14

What can be computed?

Question 15

In Python, a “setFill” method that has the argument color_rgb(255,0,0) would set the object’s fill color to what color?

Answer 15

red

Question 16

What graphics class would be best for drawing a square?

Answer 16

Rectangle

Question 17

In order to use functions in the math library, a program must include:

Answer 17

An import statement

Question 18

Given a = “What a great test”, a[4:-2] is

Answer 18

’ a great te’

Question 19

In the code:

point1 = Point(5, 5)

p is a(n)

Answer 19

instance of the class Point

Question 20

What value does the __name__ variable get assigned when a Python module is run directly?

Answer 20

‘__main__’

Question 21

Given the following Python code, what value(s) are output?

thisString = “spam_and_eggs”
print(len(thisString))

Answer 21

13

Question 22

Given the following Python code, what value(s) are output?

a = 42.4345
a = round(a*10)/10
print(“The number is “ + str(a))

Answer 22

The number is 42.4

Question 23

Given the following Python code, what values are output?

thisString = “Hello World!”
for ch in thisString:
print(ch, end=” “)

Answer 23

H e l l o W o r l d !

Question 24

Write an expression that will evaluate True if player A has won a table tennis game and False otherwise.

Assume there are two variables scoreA and scoreB which keep track of the score for two players, player A and player B respectively. The game is won when a player has at least 11 points and is leading by at least two points.

Answer 24

scoreA >= 11 and scoreA - scoreB >= 2

Question 25

Write an expression that will evaluate True if a variable word ends in “ing”

Answer 25

word[-3:] == “ing”