FIT5046 - Week 4: Ubiquitous Computing and Compose Advanced Lists Flashcards

Question 1

Who coined the term Ubiquitous Computing (pervasive computing)?

Accepted Answer

Mark Weiser in 1991.

Question 2

How is Context defined in ubiquitous applications?

Accepted Answer

Any information that can be used to characterize the situation of an entity.

Question 3

What is a context-aware application?

Accepted Answer

An application that is aware of the current environment (like location) and uses it to adapt its behavior.

Question 4

What are three examples of raw context sources?

Accepted Answer

Sensors, GPS (geolocation data), and social media platform data.

Question 5

What are high-level Situations in context-aware computing?

Accepted Answer

Concepts inferred from multiple pieces of low-level context using reasoning or AI methods.

Question 6

What is the difference between Context and Situation in a health app?

Accepted Answer

Context is raw data like heart rate and body temperature, while Situation is inferred knowledge like heat stroke or hypertension.

Question 7

What is the difference between Context and Situation in a fire monitoring app?

Accepted Answer

Context is data like wind speed and temperature, while Situation is inferred knowledge like fire or safe.

Question 8

What is the Internet of Things (IoT)?

Accepted Answer

A network of everyday physical objects connected to the internet that can communicate and exchange data.

Question 9

Who coined the term Internet of Things (IoT) and when?

Accepted Answer

Kevin Ashton from MIT around 1999.

Question 10

What is Edge Computing?

Accepted Answer

A model that processes data at the network edge, closer to where it is generated, rather than sending it to the cloud.

Question 11

Why is Edge Computing used instead of traditional Cloud Computing for IoT?

Accepted Answer

To solve issues like high bandwidth costs, slow response times, poor security, and network unavailability.

Question 12

What is the Edge-to-Cloud Continuum?

Accepted Answer

A paradigm that enhances latency, performance, and privacy by leveraging both edge and fog resources closer to data sources.

Question 13

What are the three components of a Digital Twin?

Accepted Answer

A physical real-world product, its virtual representation, and the data/information connecting them.

Question 14

What is Human-Computer Interaction (HCI)?

Accepted Answer

A cross-disciplinary area dealing with the theory, design, implementation, and evaluation of how humans interact with devices.

Question 15

How does HCI differ between traditional and ubiquitous computing?

Accepted Answer

Traditional uses explicit visible interfaces (keyboard, mouse, menus), whereas Ubiquitous uses natural modalities (voice, gestures, touch, haptic).

Question 16

How does Generative AI change ubiquitous computing?

Accepted Answer

It shifts systems from simple sense and respond rule-based models to intelligence everywhere with natural-language and multimodal understanding.

Question 17

What is Agentic AI?

Accepted Answer

An autonomous system that has a goal, plans and reasons across multiple steps, adapts to change, and takes actions over time.

Question 18

What is the difference between traditional context-aware automation and Agentic AI?

Accepted Answer

Traditional automation follows a simple rule (e.g. empty room -> off lights), while Agentic AI reasons about schedules, weather, and adapts dynamically.

Question 19

In Compose, how do you make a row item in a LazyColumn clickable to select it?

Accepted Answer

By applying the Modifier.clickable extension function to the item's layout.

Question 20

Which function is used to delete an item at a specific index from a mutableStateListOf?

Accepted Answer

countries.removeAt(index)

Question 21

When implementing list additions, what check should be performed on the input text before adding?

Accepted Answer

Check if the input string is not empty (using isNotEmpty()).

Question 22

What is an Exposed Dropdown Menu used for in Android?

Accepted Answer

It lets users choose a value from a dropdown list without typing it manually.

Question 23

Which material API container is used to wrap an Exposed Dropdown Menu and its TextField?

Accepted Answer

ExposedDropdownMenuBox

Question 24

Which annotation is required to use ExposedDropdownMenuBox in Jetpack Compose?

Accepted Answer

@OptIn(ExperimentalMaterial3Api::class)

Question 25

How do you disable user typing in the TextField of an Exposed Dropdown Menu while still allowing clicks?

Accepted Answer

Set readOnly = true and canFocus = false inside focusProperties.

FIT5046 - Week 4: Ubiquitous Computing and Compose Advanced Lists

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