MOBCOMPRELIMFINAL Flashcards by LUIS KEINE CERTEZA

What is mobile computing?
A. A fixed system for data storage
B. A technology allowing data transmission without physical links
C. A software-focused computing concept
D. A desktop computing feature

A technology allowing data transmission without physical links

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Which concept of mobile computing defines the physical devices used?
A. Mobile Communication
B. Mobile Hardware
C. Mobile Software
D. Mobile Platforms

Mobile Hardware

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Mobile communication refers to:
A. Using a fixed physical link for internet access
B. The infrastructure supporting wireless data transmission
C. Designing software for hardware devices
D. Synchronizing device components

The infrastructure supporting wireless data transmission

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Which of the following is a component of mobile software?
A. Radio signal receivers
B. Operating systems
C. Bandwidth protocols
D. Transceiver components

Operating systems

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What enables mobile devices to send and receive signals simultaneously?
A. Half-duplex systems
B. Full-duplex systems
C. Limited signal processors
D. Single-channel transmission

Full-duplex systems

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What portable computer was released in 1981 and marked the first consumer laptop?
A. Kyocera Kyotronic
B. Osborne 1
C. Gavilan SC
D. Dynabook

Osborne 1

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What innovation did the Kyocera Kyotronic introduce?
A. Touchscreen functionality
B. AA battery power with extended usability
C. Integrated printing options
D. High-resolution displays

AA battery power with extended usability

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Which feature was unique to the IBM Simon, introduced in 1993?
A. Dual operating systems
B. Integration of phone, PDA, and fax functions
C. High-definition display support
D. Pre-installed video applicatio

Integration of phone, PDA, and fax functions

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What milestone did the iPhone achieve in 2007?
A. First to use an LCD touchscreen
B. First smartphone with advanced web browsing
C. Introduction of modular hardware design
D. Integration of desktop processing speeds

First smartphone with advanced web browsing

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Which decade introduced the PalmPilot and ushered in the PDA era?
A. 1970s
B. 1980s
C. 1990s
D. 2000s

1990s

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Mobile applications are:
A. Programs designed for desktop systems only
B. Software that runs on smartphones and tablets
C. Extensions of wireless communication protocols
D. Designed exclusively for gaming

Software that runs on smartphones and tablets

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What factor has driven the popularity of mobile apps?
A. Exclusivity to paid services
B. Dependence on broadband connectivity
C. Easy accessibility and versatile functionality
D. Fixed compatibility with older devices

Easy accessibility and versatile functionality

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Which is NOT a mobile app distribution platform?
A. Google Play
B. Apple App Store
C. GitHub
D. Windows Store

GitHub

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Which development environment is officially supported for Android development?
A. Xcode
B. IntelliJ IDEA
C. Android Studio
D. Visual Studio

Android Studio

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How has the mobile app market transformed since its inception?
A. By exclusively offering free apps
B. By limiting the variety of app categories
C. By enabling app-based revenue generation and diverse app functionality
D. By reducing the relevance of distribution platforms

By enabling app-based revenue generation and diverse app functionality

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Which capability is commonly found in mobile devices?
A. Real-time accelerometer support
B. Advanced gaming GPUs
C. 24/7 unlimited internet connectivity
D. Fixed compatibility across generations

Real-time accelerometer support

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What is a common limitation of mobile devices compared to desktops?
A. High-speed processors
B. Fixed battery life
C. Availability of wireless network access
D. Multitasking capabilities

Fixed battery life

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Why is GPS functionality critical in mobile devices?
A. It allows devices to transmit signals without networks.
B. It improves real-time location-based services.
C. It prevents device interference with cellular networks.
D. It is required for internet connectivity.

It improves real-time location-based services.

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. Which of the following is a key advantage of mobile computing?
A. Increased dependency on central servers
B. Reduced user interactivity
C. Location flexibility for users
D. Complex physical network configurations

Location flexibility for users

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What is a significant disadvantage of mobile computing?
A. Limited portability
B. Risk of data breaches via malicious networks
C. High redundancy in computing tasks
D. Limited app availability

Risk of data breaches via malicious networks

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How does mobile computing save time for users?
A. By requiring faster charging capabilities
B. By reducing unnecessary travel through remote access
C. By eliminating energy constraints
D. By centralizing all data processing

By reducing unnecessary travel through remote access

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Which constraint is most critical in mobile system optimization?
A. Screen size
B. Battery energy
C. App variety
D. Pricing

Battery energy

What defines mobile cloud computing?
A. Using local storage resources only
B. Combining wireless networks and cloud computing for mobile functionality
C. Reducing dependency on traditional operating systems
D. Developing apps that run without internet access

Combining wireless networks and cloud computing for mobile functionality

What is a significant focus in IoT for mobile computing?
A. Reducing device storage requirements
B. Integrating devices and home appliances into connected systems
C. Ensuring software compatibility with older models
D. Eliminating dependency on physical hardware

Integrating devices and home appliances into connected systems

Which trend involves offering users customized app experiences? A. IoT-driven integration B. Tailor-made user features C. Global app standardization D. Static device compatibility

Tailor-made user features

What is a benefit of emulators in app development? A. They replace physical devices permanently. B. They eliminate the need for operating systems. C. They enable testing without access to real devices. D. They guarantee faster app performance.

They enable testing without access to real devices

Which language does Flutter primarily use for app development? A. JavaScript B. Dart C. Kotlin D. Python

Dart

What defines a cross-platform development tool? A. It limits compatibility to specific devices. B. It enables app deployment on multiple operating systems. C. It focuses exclusively on Android devices. D. It uses hardware-specific languages.

It enables app deployment on multiple operating systems.

What major change did 5G introduce to mobile networks? A. Faster data speeds with reduced latency B. Improved battery life for devices C. Broader coverage of fixed network access D. Elimination of smartphone dependency

Faster data speeds with reduced latency

What is the primary purpose of JavaScript? A. Designing databases B. Programming the behavior of web pages C. Creating static web layouts D. Formatting text styles

Programming the behavior of web pages

Which is NOT a capability of in-browser JavaScript? A. Manipulating HTML content B. Reading/writing files directly from the hard disk C. Handling user interactions D. Sending requests to a server

Reading/writing files directly from the hard disk

How do you declare a variable in JavaScript? A. let, var, or const B. int, float, or string C. declare, assign, or create D. num, str, or bool

let, var, or const

What does the typeof operator do in JavaScript? A. Converts a variable to a string B. Declares a data type C. Identifies the type of a variable D. Compares two data types

Identifies the type of a variable

What will var x = 16 + "Volvo"; result in? A. Error B. 16Volvo C. "16" + "Volvo" D. NaN

16Volvo

Which of the following is true about JavaScript functions? A. They cannot accept parameters. B. They always return a value. C. They can be reused throughout a program. D. They must be declared inside tags

They can be reused throughout a program.

What is the purpose of an if...else statement in JavaScript? A. Looping through code B. Handling conditional execution of code C. Declaring variables D. Defining data types

Handling conditional execution of code

What is the correct syntax for a for loop in JavaScript? A. for (var i = 0; i < 5; i++) B. for i = 0 to 5 C. for (let i = 5; i++) D. loop (i < 5)

for (var i = 0; i < 5; i++)

Which JavaScript keyword is used to exit a loop? A. stop B. exit C. break D. return

break

Which React Native component is used for gathering user text input? A. View B. TextInput C. ScrollView D. Button

TextInput

What does the FlatList component do in React Native? A. Displays a horizontal slider B. Renders large datasets efficiently C. Creates a fixed layout for images D. Scrolls through text-only elements

Renders large datasets efficiently

Which React Native component displays a spinner for loading indicators? A. Switch B. ActivityIndicator C. TouchableOpacity D. Modal

ActivityIndicator

What is the purpose of the TouchableOpacity component? A. Handling form submissions B. Displaying text-only content C. Creating interactive, pressable elements D. Rendering full-screen images

Creating interactive, pressable elements

Which React Native component should you use for creating modal overlays? A. Modal B. ScrollView C. FlatList D. Image

Modal

When should you use the Switch component? A. For long text inputs B. For rendering a scrollable list C. For enabling or disabling binary settings D. For displaying image galleries

For enabling or disabling binary settings

Which component would be best for creating a list of items with custom layouts? A. FlatList B. ScrollView C. TouchableOpacity D. ActivityIndicator

FlatList

What is JSX in React? A. A library for creating mobile apps B. A syntax extension for writing HTML-like code in JavaScript C. A tool for debugging JavaScript D. A database query language

A syntax extension for writing HTML-like code in JavaScript

What is a React component? A. A reusable, self-contained unit of UI B. A plugin for optimizing performance C. A backend service D. A static stylesheet

A reusable, self-contained unit of UI

How are props used in React? A. To manage component-specific state B. To pass data from parent to child components C. To optimize rendering performance D. To define CSS styles for components

To pass data from parent to child components

What is the difference between props and state in React? A. Props are immutable; state can be modified internally. B. Props can store data; state cannot. C. State must be passed from parent to child; props are local to a component. D. Props are used only for styling; state controls functionality.

Props are immutable; state can be modified internally.

What is the purpose of the useState hook in React? A. To update the props of a component B. To manage state in functional components C. To control the lifecycle of class components D. To render multiple components in parallel

To manage state in functional components

What does ReactDOM.render() do in a React application? A. Attaches a component to the DOM B. Updates the component state C. Binds props to a child component D. Initializes React routing

Attaches a component to the DOM

What is the role of the return statement in JavaScript functions? A. It defines global variables. B. It terminates loops. C. It specifies the value returned by the function. D. It logs output to the console.

It specifies the value returned by the function.

How do you pass an event handler to a React component? A. As a prop using onClick or similar attributes B. Through the state object C. By modifying the className attribute D. Using the render() method

As a prop using onClick or similar attributes