Deck 13: Do It, Then Ask Permission Posttest Loops

Question 1

____ loops should be used only when their instructions must be processed at least once.

A) Posttest
C) DoAfter
B) Pretest
D) ProcessAfter

Answer 1

A

Question 2

In the posttest syntax, the condition is evaluated before the loop instructions are processed.

Answer 2

False

Question 3

In the pretest syntax, the condition is evaluated after the loop instructions are processed.

Answer 3

False

Question 4

The ____ loop condition is evaluated after the instructions within the loop are processed.

A) posttest
C) before
B) pretest
D) after

Question 5

In the ____ loop, the condition appears in the last line.

A) sequential
C) posttest
B) pretest
D) iterative

Question 6

The instructions in a pretest loop will be processed at least once.

Question 7

The instructions in a posttest loop ____.

A) may never be processed
C) always will be processed at least twice
B) should only be processed once
D) always will be processed at least once

Question 8

In the pretest syntax for a Do…Loop statement, the {While | Until} condition section is part of the ____ clause.

A) Execute
C) Do
B) Process
D) Loop

Question 9

Pretest loops should be used only when their instructions must be processed at least once.

Question 10

A pretest loop is easier to write and understand than a posttest loop with a selection structure.

Question 11

In the ____ loop, the condition appears in the first line.

A) sequential
C) posttest
B) pretest
D) iterative

Question 12

Most programmers use posttest loops.

Question 13

A repetition structure can be either a pretest loop or a posttest loop.

Question 14

The ____ loop condition is evaluated before the instructions within the loop are processed.

A) posttest
C) before
B) pretest
D) after

Question 15

In the posttest syntax for a Do…Loop, the {While | Until} condition section is part of the ____ clause.

A) Execute
C) Do
B) Process
D) Loop

Question 16

The Do…Loop statement can be used to code a pretest loop as well as a posttest loop.

Question 17

When a posttest loop is placed in a selection structure, the loop will be processed only when the selection structure's condition evaluates to True.

Question 18

The diamond that represents the condition appears at the top of the loop in the flowchart of a posttest loop.

Question 19

The difference between pretest and posttest loops pertains to how the accumulator is evaluated.

Question 20

In the posttest syntax, the only purpose of the Do clause is to mark the beginning of the loop.

Question 21

You may test an initial condition of a posttest loop by ____.

A) using a nested loop for the initial condition
B) placing the posttest loop inside a selection structure
C) resetting the counter variable on each pass of the loop
D) initializing all loop variables to zero

Question 22

One problem with posttest loops is that they always execute at least once. You can fix the problem in the Posttest Loop button's code by placing the posttest loop in a(n) ____ structure.

A) selection
C) iterative
B) execute
D) another posttest loop

Question 23

You are given the following statement: Do ... Loop Until intCounter > intNumTimes.
The Until intCounter > intNumTimes represents a _____.

A) loop condition
C) loop full condition
B) loop exit condition
D) loop retreat condition