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Welcome to the Models of the System MCQs Page

Dive deep into the fascinating world of Models of the System with our comprehensive set of Multiple-Choice Questions (MCQs). This page is dedicated to exploring the fundamental concepts and intricacies of Models of the System, a crucial aspect of Human Computer Interaction. In this section, you will encounter a diverse range of MCQs that cover various aspects of Models of the System, from the basic principles to advanced topics. Each question is thoughtfully crafted to challenge your knowledge and deepen your understanding of this critical subcategory within Human Computer Interaction.

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Check out the MCQs below to embark on an enriching journey through Models of the System. Test your knowledge, expand your horizons, and solidify your grasp on this vital area of Human Computer Interaction.

Note: Each MCQ comes with multiple answer choices. Select the most appropriate option and test your understanding of Models of the System. You can click on an option to test your knowledge before viewing the solution for a MCQ. Happy learning!

Models of the System MCQs | Page 6 of 11

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Q51.
What does the PIE model specifically target?

a.

Formal verification of system behavior

b.

Predictability of system behavior

c.

Usability of interactive systems

d.

Control of system by the user

Discuss
Answer: (c).Usability of interactive systems Explanation:The PIE model specifically targets usability of interactive systems by defining principles related to various aspects of interaction, such as observability, predictability, control of the system by the user, reachability, and undo.
Q52.
What is the primary value of using interaction models?

a.

Ensuring formal verification of system properties

b.

Guaranteeing the implementation of all formal principles

c.

Gaining insights into interaction properties beyond surface clutter

d.

Replacing the need for usability testing

Discuss
Answer: (c).Gaining insights into interaction properties beyond surface clutter Explanation:The primary value of using interaction models is gaining insights into interaction properties beyond the surface clutter of real or imagined systems. These insights become part of the background knowledge that can inform design decisions and approaches in various areas.
Q53.
What is a key aspect of the informal principles derived from formal analyses?

a.

They are fully formalizable and executable.

b.

They serve as a replacement for formal principles.

c.

They can be justified through formal verification.

d.

They are not themselves fully formalizable.

Discuss
Answer: (d).They are not themselves fully formalizable. Explanation:A key aspect of the informal principles derived from formal analyses is that they are not themselves fully formalizable. Despite being obtained through formal analysis, these principles are often expressed informally and cannot always be completely formalized.
Q54.
What is the primary focus of the PIE model?

a.

Describing the internal architecture of a computer system

b.

Defining the inputs and outputs of an interactive system

c.

Identifying the specific commands used by users

d.

Formalizing the relationship between display and result

Discuss
Answer: (b).Defining the inputs and outputs of an interactive system Explanation:The primary focus of the PIE model is to define the inputs and outputs of an interactive system, describing it purely in terms of its interactions with the user, including inputs from the user (commands) and outputs to the user (display and result).
Q55.
In the PIE model, what is the role of the "effect" (E)?

a.

To represent the current internal state of the system

b.

To serve as the display screen of the system

c.

To calculate the user's input history

d.

To account for the future external behavior of the system

Discuss
Answer: (d).To account for the future external behavior of the system Explanation:The "effect" (E) in the PIE model represents an idealized minimal state required to account for the future external behavior of the system. It is used to calculate the current outputs of the system, which are the display and result.
Q56.
What is the purpose of the state transition function "doit" in the PIE model?

a.

To determine the physical inputs from the user

b.

To calculate the current display of the system

c.

To transform the internal state of the system

d.

To generate the user's input history

Discuss
Answer: (c).To transform the internal state of the system Explanation:The state transition function "doit" takes the present state (effect) and user commands as inputs and produces the new state (effect) after the user has entered the commands. It is used to simulate the transformation of the internal state based on user interactions.
Q57.
Which statement describes the relationship between the interpretation function "I" and the state transition function "doit"?

a.

The interpretation function calculates the user's input history.

b.

The state transition function calculates the display and result of the system.

c.

The interpretation function and state transition function are equivalent.

d.

The state transition function is related to the interpretation function by specific axioms.

Discuss
Answer: (d).The state transition function is related to the interpretation function by specific axioms. Explanation:The state transition function "doit" is related to the interpretation function "I" through specific axioms that define their relationship. These axioms state how the new state obtained using "doit" corresponds to the application of user commands to the initial state obtained from the interpretation function "I."
Q58.
At what levels of abstraction can the PIE model be applied?

a.

Only at the physical/lexical level of interpretation

b.

Only at the logical level of interpretation

c.

At multiple levels of abstraction

d.

Only at the user's intended action level

Discuss
Answer: (c).At multiple levels of abstraction Explanation:The PIE model can be applied at multiple levels of abstraction, including the physical/lexical level (raw physical inputs and outputs), logical level (higher-level actions and interface elements), and even within the user (user's intended actions and perceived response). Different levels can be mapped between, leading to level conformance properties.
Q59.
What does WYSIWYG stand for?

a.

What You See Is What You Get

b.

What You Say Is What You Get

c.

Where You Search Is What You Get

d.

Why You Smile Is What You Get

Discuss
Answer: (a).What You See Is What You Get Explanation:WYSIWYG stands for "What You See Is What You Get," referring to the principle that the display of an interface accurately represents the final output or result.
Q60.
How many interpretations of WYSIWYG does Harold Thimbleby mention?

a.

One

b.

Two

c.

Three

d.

Four

Discuss
Answer: (b).Two Explanation:Harold Thimbleby points out two interpretations of WYSIWYG: one related to what you will get at the printer and the other related to what you have got in the system.
Page 6 of 11

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