Input-Process-Output Model Quiz

What is the purpose of the input-process-output (IPO) model in systems analysis and software engineering?

• To receive inputs from a user or other source, do computations on the inputs, and return the results of the computations

• To display the results of the computations

• To perform computations without receiving any inputs

• To only receive inputs from a user

Answer explanation

The purpose of the IPO model is to receive inputs, perform computations, and return the results. It is used in systems analysis and software engineering.

According to the IPO model, what is considered as the 'input' in a process?

• A provision for the environment

• The results of the computations

• A computation based on the requirement

• A requirement from the environment

Answer explanation

The 'input' in the IPO model refers to a requirement from the environment.

In the context of the IPO model, what is considered as the 'process' in a program or process?

• A computation based on the requirement

• A requirement from the environment

• A provision for the environment

• The results of the computations

Answer explanation

The 'process' in the IPO model refers to a computation based on the requirement, which produces the results of the computations.

If a school is conducting a science fair and Priya wants to demonstrate a program to convert Fahrenheit temperatures into Celsius temperatures, what is the first step according to the IPO model?

• Ask the user for the Fahrenheit temperature

• Perform a calculation to convert the Fahrenheit temperature into the corresponding Celsius temperature

• Display the Celsius temperature

• Ask the user for the Celsius temperature

Answer explanation

According to the IPO model, the first step is to ask the user for the Fahrenheit temperature.

In a science class, Zoe is learning about temperature conversions. In the provided pseudocode, what is the purpose of the 'Assign' statement?

• To perform a calculation to convert the Fahrenheit temperature into the corresponding Celsius temperature

• To ask the user for the Fahrenheit temperature

• To display the Celsius temperature

• To store the result of the Fahrenheit to Celsius conversion

Answer explanation

The 'Assign' statement is used to perform a calculation to convert the Fahrenheit temperature into the corresponding Celsius temperature.

What is the purpose of the 'Flowchart' in the IPO model?

• To visually represent the structure of an information processing program

• To display the results of the computations

• To perform computations without receiving any inputs

• To only receive inputs from a user

Answer explanation

The purpose of the 'Flowchart' in the IPO model is to visually represent the structure of an information processing program.

According to the IPO model, what is considered as the 'output' in a program or process?

• The results of the computations

• A computation based on the requirement

• A requirement from the environment

• A provision for the environment

Answer explanation

The 'output' in the IPO model refers to a provision for the environment. It is the result or outcome of a program or process.

What is the purpose of the 'Declare' statement in the provided pseudocode?

• To display the Celsius temperature

• To ask the user for the Fahrenheit temperature

• To perform a calculation to convert the Fahrenheit temperature into the corresponding Celsius temperature

• To declare variables for use in the program

Answer explanation

The 'Declare' statement is used to declare variables for use in the program.

In the context of the IPO model, what is considered as the 'requirement from the environment'?

• Output

• Process

• Input

• Computation

Answer explanation

In the IPO model, the 'requirement from the environment' refers to the input. It is the data or information that is needed for the process to produce the desired output. Therefore, the correct choice is 'Input'.

What is the purpose of the 'End' statement in the provided pseudocode?

• To perform a calculation to convert the Fahrenheit temperature into the corresponding Celsius temperature

• To indicate the end of the program

• To display the Celsius temperature

• To ask the user for the Fahrenheit temperature

Answer explanation

The 'End' statement is used to indicate the end of the program. It marks the termination point of the code execution.