Question 1

The first input operation is called the _____, and its purpose is to get the first input value that will be tested by the validation loop.

Accepted Answer

A)   priming read
B)   first input
C)   loop set read
D)   loop validation. A

Question 2

The variable used to keep the running total is called a(n) _____.

Accepted Answer

A)   Accumulator
B)   Total
C)   running total
D)   grand total A

Question 3

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

Accepted Answer

sentinel

Question 4

The first line in the while loop is referred to as the condition clause.

Accepted Answer

A) True 
 B)False

Question 5

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

Accepted Answer

The answer of A(n) _______________ total is a sum of...

Question 6

Functions can be called from statements in the body of a loop, and loops can be called from the body of a function.

Accepted Answer

A) True 
 B)False

Question 7

A better way to repeatedly perform an operation is to write the statements for the task once, and then place the statements in a loop that will repeat the statements as many times as necessary.

Accepted Answer

A) True 
 B)False

Question 8

In Python, the variable in the for clause is referred to as the _____ because it is the target of an assignment at the beginning of each loop iteration.

Accepted Answer

A)   target variable
B)   loop variable
C)   for variable
D)   count variable

Question 9

The integrity of a program's output is only as good as the integrity of its input. For this reason the program should discard input that is invalid and prompt the user to enter correct data.

Accepted Answer

A) True 
 B)False

Question 10

What type of loop structure repeats the code a specific number of times?

Accepted Answer

A)   Condition-controlled loop
B)   Number-controlled loop
C)   Count-controlled loop
D)   Boolean-controlled loop

Question 11

In Python, an infinite loop usually occurs when the computer accesses the wrong memory address.

Accepted Answer

A) True 
 B)False

Question 12

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

Accepted Answer

The answer of A(n) _______________ validation loop is sometimes called...

Question 13

A(n) _______________-controlled loop causes a statement or set of statements to repeat as long as a condition is true.

Accepted Answer

The answer of A(n) _______________-controlled loop causes a statement or...

Question 14

A(n) _______________ loop usually occurs when the programmer forgets to write code inside the loop that makes the test condition false.

Accepted Answer

The answer of A(n) _______________ loop usually occurs when the...

Question 15

What type of loop structure repeats the code based on the value of the Boolean expression?

Accepted Answer

A)   Condition-controlled loop
B)   Number-controlled loop
C)   Count-controlled loop
D)   Boolean-controlled loop

Question 16

What is the structure that causes a statement or a set of statements to execute repeatedly?

Accepted Answer

A)   Sequence
B)   Decision
C)   Module
D)   Repetition

Question 17

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

Accepted Answer

The answer of The acronym _______________ refers to the fact...

Question 18

What is the disadvantage of coding in one long sequence structure?

Accepted Answer

A)   Duplicated code makes the program faster to write.
B)   Writing a long sequence of statements is error prone.
C)   If parts of the duplicated code have to be corrected, the correction has to be made many times.
D)   It does not make use of decision structures.

Question 19

Both of the following for clauses would generate the same number of loop iterations:
for num in range(4):
for num in range(1,5):

Accepted Answer

A) True 
 B)False

Question 20

What are the values that the variable num contains through the iterations of the following for loop?
For num in range(2, 9, 2)

Accepted Answer

A)   2, 3, 4, 5, 6, 7, 8, 9
B)   2, 5, 8
C)   2, 4, 6, 8
D)   1, 3, 5, 7, 9

Exam 4: Repetition Structures

The first input operation is called the _____, and its purpose is to get the first input value that will be tested by the validation loop.

The variable used to keep the running total is called a(n) _____.

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

The first line in the while loop is referred to as the condition clause.

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

Functions can be called from statements in the body of a loop, and loops can be called from the body of a function.

A better way to repeatedly perform an operation is to write the statements for the task once, and then place the statements in a loop that will repeat the statements as many times as necessary.

In Python, the variable in the for clause is referred to as the _____ because it is the target of an assignment at the beginning of each loop iteration.

The integrity of a program's output is only as good as the integrity of its input. For this reason the program should discard input that is invalid and prompt the user to enter correct data.

What type of loop structure repeats the code a specific number of times?

In Python, an infinite loop usually occurs when the computer accesses the wrong memory address.

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

A(n) _______________-controlled loop causes a statement or set of statements to repeat as long as a condition is true.

A(n) _______________ loop usually occurs when the programmer forgets to write code inside the loop that makes the test condition false.

What type of loop structure repeats the code based on the value of the Boolean expression?

What is the structure that causes a statement or a set of statements to execute repeatedly?

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

What is the disadvantage of coding in one long sequence structure?

Both of the following for clauses would generate the same number of loop iterations: for num in range(4): for num in range(1,5):

What are the values that the variable num contains through the iterations of the following for loop? For num in range(2, 9, 2)