CHAPTER 10 - INPUT VALIDATION

Multiple Choice

What does the acronym GIGO stand for in computing?

• Garbage In, Garbage Out

• Great Input, Great Output

• Good Input, Good Output

• General Information, General Output

Multiple Choice

What humorous error message did the Apache web server use up to 2006?

• ID10T Error

• PEBCAK Error

• User Error

• Keyboard Error

Multiple Choice

Programs should be designed to reject bad data because:

• It reduces the need for user input.

• It allows for more complex algorithms.

• It makes the program run faster.

• It ensures data integrity and security.

Multiple Choice

If a program reads bad data as input, what will it produce as output?

• Correct output

• No output

• Unexpected behavior

• Bad output

Multiple Choice

A program should do the following if the input is invalid:

• Shut down immediately

• Provide an error message

• Ignore the input

• Process the input anyway

Multiple Select

What messages are displayed if the input score is -5 in the given pseudocode? Select 2:

• ERROR: The score cannot be less than 0

• Invalid score

• Enter the correct score

• Score cannot be negative

Multiple Choice

In the given pseudocode, what condition is checked in the while loop?

• The loop continues while a variable is equal to 1.

• The loop continues while a variable is less than 10.

• The loop continues while a variable is a negative number.

• The loop continues while a variable is greater than 5.

Multiple Choice

What is the purpose of an input validation loop as shown in the diagram?

• To ensure inputs are valid before processing

• To accept all inputs without checking

• To display outputs

• To terminate the program immediately

Multiple Choice

The program should accept 'yes' and 'no' in any combination of upper- or lowercase letters because:

• it is a standard programming practice.

• it ensures user input is flexible and user-friendly.

• it reduces the chances of errors.

• it complicates the program unnecessarily.

Multiple Choice

The purpose of validating the length of a string is to:

• Check for null values

• Encrypt the string

• Ensure it meets specific requirements

• Convert it to a different data type

Multiple Choice

Defensive programming is a practice in software development that involves:

• Writing code that anticipates and handles potential errors and issues.

• Writing code without any error handling mechanisms.

• Focusing solely on performance optimization.

• Ignoring potential errors and focusing only on the main functionality.

Multiple Choice

Which of the following is an example of an obvious input error?

• Empty Input

• Entering a string instead of an integer

• B) Negative numbers for price

• All of the above

Multiple Choice

An example of a not so obvious input error is:

• Typing in the wrong email address

• Forgetting to save a file

• Entering a wrong password

• Pressing Enter key without typing any value

Multiple Choice

For a U.S. address, what should the state abbreviation be?

• A number

• A three-character string

• Any string

• A valid two-character string

Multiple Choice

For a U.S. address, the ZIP code should be a 5- or 9-digit number. True or False?

• True

• False