Midterm (Chapters 1-5)

Question 1

A ______ Is a set of instructions that a computer will follow to perform a task.

Answer 1

Program

Question 2

The term hardware refers to

Answer 2

All the physical devices that make up a computer

Question 3

The CPU (Central Processing Unit) is the part of the computer that

Answer 3

actually runs programs and is the most important component in a computer

Question 4

How does a disk drive store data

Answer 4

Magnetically by encoding it onto a circular disk

Question 5

What are microprocessors

Answer 5

Small central processing unit chips

Question 6

What is the type of memory that can hold data for a long period of time? EVEN if there is no power to the computer

Answer 6

Secondary storage

Question 7

Main Memory is known as

Answer 7

RAM

Question 8

How do USB drives store data

Answer 8

Using flash memory

Question 9

Is python an interpreter or compiler?

Answer 9

Python is an interpreter that can read python programming statements and execute them

Question 10

In which mode does the interpreter read the contents of a file that contains python statements and executes each statement?

Answer 10

Script mode

Question 11

What is the output of the following statement?
print(‘I\’m ready to begin’)

Answer 11

I’m ready to begin

Question 12

What is the output of the following statement, given that value1 = 2.0 and value 2 = 12?

print(value1*value2)

Answer 12

24.0

Question 13

What is the output of the following statement?

print(‘The path is D:\sample\test.’)

Answer 13

The path is D:\sample\test.

Question 14

What are the notes of explanation that document lines or sections of a program?

Answer 14

Comments

Question 15

What symbol is the remainder operator? What is it also known as?

Answer 15

%, it is also known as the modulus (mod) operator

Question 16

What character is a special character that is preceded with a backslash (), appearing inside a string literal?

Answer 16

An escape character

Question 17

What specifier is a special set of characters that specify how a value should be formatted?

Answer 17

The formatting specifier.

Question 18

When applying what formatting specifier to the number 76.15854 will it result in 76.159?

Answer 18

the .3f formatting specifier

Question 19

What is a software requirement?

Answer 19

a single task that the program must perform in order to satisfy the customer.

Question 20

In the expression 12.45 + 3.6 the values to the right and left of the + symbol are what?

Answer 20

They are the operands

Question 21

What is a name that represents a stored value in the computer’s memory?

Answer 21

A variable

Question 22

Python uses what to categorize values in memory?

Answer 22

Data types.

Question 23

A _______ is a name that represents a value that cannot be changed during a program’s execution.

Answer 23

Constant

Question 24

The ____ statement is used to create a decision structure

Answer 24

if

Question 25

In flowcharting, which symbol is used to represent a Boolean expression?

Answer 25

A diamond

Question 26

Which decision structure provides only one alternative path of execution?

Answer 26

A single alternative decision structure.

Question 27

In a decision structure, the action is _______executed because it is performed only when a specific condition is true?

Answer 27

Conditionally

Question 28

Which operator determines whether a specific relationship exists between to values?

Answer 28

A relational operator

Question 29

What statement will execute one block of statements if its condition is true or another block if its condition is false?

Answer 29

An if-else statement

Question 30

Python provides a special version of a decision structure known as the __________ statement, which makes the logic of the nested decision structure simpler to write.

Answer 30

if-elif-else

Question 31

Which logical operator reverses the truth of a boolean expression?

Answer 31

The not operator

Question 32

What kind of expression is made up of two or more boolean expressions?

Answer 32

A compound expression

Question 33

What kind of structure causes a set of statements to execute repeatedly?

Answer 33

A repetition structure

Question 34

A _________ controlled loop causes a statement or set of statements to repeat as long as the condition is true.

Answer 34

A condition controlled loop

Question 35

What loop is known as the pretest loop because it tests the condition before performing an iteration?

Answer 35

The while loop.

Question 36

What kind of loop usually occurs when the programmer does not include code inside the loop that makes the test condition false?

Answer 36

An infinite loop

Question 37

In python, you would use the ____ statement to write a count-controlled loop.

Answer 37

for

Question 38

A(n) ______ total is a sum of numbers that accumulates with each iteration of the loop.

Answer 38

running

Question 39

A(n) _____ is a special value that marks the end of a sequence of items

Answer 39

sentinel

Question 40

The acronym _______ refers to the fact that the computer cannot tell the difference between good data and bad data.

Answer 40

GIGO (Garbage in, Garbage out)

Question 41

A(n) _______ validation loop is sometimes called an error trap or error handler.

Answer 41

Input

Question 42

The ______ function is a built-in function that generates a list of integer values

Answer 42

range

Question 43

The following for loop iterates ______ times to draw a square. for x in range (4): turtle.forward(200) turtle.right(90)

Answer 43

four times

Question 44

The code for a function is known as a function _____

Answer 44

definition (def)

Question 45

The function header begins with the keyword ____ and is followed by the name of the function.

Answer 45

def

Question 46

The _____ function contains a program’s mainline logic which is the overall logic of the program

Answer 46

main

Question 47

In a flowchart, a function call is depicted by a ______

Answer 47

rectangle

Question 48

Functions that are in the standard library are stored in files that are known as ______

Answer 48

modules

Question 49

To refer to a function in module, python uses what kind of notation? ex: random.randint

Answer 49

dot notation

Question 50

A value-returning function has a ______ statement that sends a value back to the part of the program that called it

Answer 50

return

Question 51

In python, a module’s file name should end in

Answer 51

.py

Question 52

The approach known as _________ makes a program easier to understand , test, and maintain

Answer 52

modularization