Question 1

Which type of events focus on responding to finger touches on a touchscreen?&#10;A)Drag events&#10;B)Pointer events&#10;C)Touch events&#10;D)Mouse events

Accepted Answer

Touch events are specifically designed to respond to finger touches on a touchscreen. Drag events are similar, but specifically involve moving an object on the touchscreen by dragging it with a finger. Pointer events refer to any type of pointing device, including a mouse, touchscreen, or stylus. Mouse events are specific to a computer mouse and do not apply to touchscreen interactions.

Question 2

Which type of events aim to handle input from a mouse, finger, or stylus with each event?&#10;A)Drag events&#10;B)Pointer events&#10;C)Touch events&#10;D)Mouse events

Accepted Answer

Pointer events are the most appropriate type of events for handling input from a mouse, finger, or stylus because they encompass all of these input methods. Drag events are specifically designed for handling the dragging or movement of an object, touch events are specifically tailored to handle touch-based input on touchscreens, and mouse events are designed for input from a mouse device only.

Question 3

The touchstart event is roughly analogous to the ____ event.&#10;A) click&#10;B) mouseup&#10;C) mousedown&#10;D) mouseover

Accepted Answer

The touchstart event is initiated when a user touches a touchscreen interface, which is roughly analogous to the mousedown event in mouse-driven interfaces. Both events represent the initial point of contact—mousedown when the mouse button is pressed, and touchstart when the screen is touched.

Question 4

A device's ____ detects its orientation in space.&#10;A)gyroscope&#10;B)camera&#10;C)accelerometer&#10;D)battery

Accepted Answer

A gyroscope primarily detects a device's orientation in space, while a camera captures images and videos, an accelerometer measures changes in motion and velocity, and a battery powers the device.

Question 5

To continually monitor a user's position, you use the ____ method of the Geolocation API.&#10;A) getCurrentPosition()&#10;B)watchPosition()&#10;C)clearWatch()&#10;D)latitude()

Accepted Answer

To continually monitor a user's position, we use the watchPosition() method of the Geolocation API. This method tracks the user's position and returns updated location information as the user moves. getCurrentPosition() is used to get the user's current location only once, while clearWatch() is used to stop tracking the user's location. latitude() is not a method of the Geolocation API.

Question 6

The mobile versions of popular browsers share all the same &#160;capabilities, limitations, and even bugs as their desktop counterparts.

Accepted Answer

Mobile versions of popular browsers are designed differently from their desktop counterparts, often with variations in capabilities, limitations, and bugs due to the different hardware, operating systems, and use cases of mobile devices.

Question 7

You access methods of the Geolocation API using the geolocation property of the ____ object.&#10;A) Screen&#10;B) Window&#10;C) Navigator&#10;D) Location

Accepted Answer

The geolocation property is a part of the Navigator object that contains information about the browser. So, the correct choice is C (Navigator).

Question 8

Which event is fired when a user moves a finger off the screen or outside of an object's containing element?&#10;A) touchstart&#10;B) touchmove&#10;C) touchend&#10;D) touchcancel

Accepted Answer

The touchcancel event is fired when a touch event is interrupted, typically due to the user moving their finger off the screen or outside of an object's containing element. This is different from touchend, which is only fired when the user releases their finger from the screen while it is still over the object. Therefore, D is the best choice.

Question 9

Which of the following is a touch event?&#10;A) touchend&#10;B) mousedown&#10;C) pointermove&#10;D) clientY

Accepted Answer

Touchend is a touch event that is fired when a touch point is removed from the touch surface.

Question 10

A device's ____ detects changes in speed.&#10;A)gyroscope&#10;B)camera&#10;C)accelerometer&#10;D)battery

Accepted Answer

The accelerometer is a sensor that detects changes in speed or acceleration of the device. It is commonly used in smartphones to switch between portrait and landscape modes when the device is rotated and to track fitness activities.

Question 11

The success and fail arguments of the getCurrentPosition()method, which are executable code, are examples of ____ .&#10;A)API keys&#10;B)properties&#10;C) callbacks&#10;D)minifiers

Accepted Answer

The answer of The success and fail arguments of the...

Question 12

To disable interface gestures in response to pointer events, you change the value off the ____ property.&#10;A) touches&#10;B) clientX&#10;C) touchAction&#10;D) msTouchAction

Accepted Answer

The answer of To disable interface gestures in response to...

Question 13

The Geolocation API p rovides access to device orientation and changes in orientation.

Accepted Answer

The answer of The Geolocation API p rovides access to...

Question 14

Which of the following is a mouse event?&#10;A) touchstart&#10;B) click&#10;C) pointerup&#10;D) clientX

Accepted Answer

The answer of Which of the following is a mouse...

Question 15

Pointer events do not aim to handle input from&#160; a mouse.

Accepted Answer

The answer of Pointer events do not aim to handle...

Question 16

Which of the following is NOT removed when minifying a file?&#10;A) spaces&#10;B)comments&#10;C)indents&#10;D)line breaks

Accepted Answer

The answer of Which of the following is NOT removed...

Question 17

On a touchscreen device without a mouse, most browsers fire the click event when a&#160; user touches the screen.

Accepted Answer

The answer of On a touchscreen device without a mouse,...

Question 18

To request a user's position a single time, you use the ____ method of the Geolocation API.&#10;A) getCurrentPosition()&#10;B)watchPosition()&#10;C)clearWatch()&#10;D)latitude()

Accepted Answer

The answer of To request a user's position a single...

Question 19

Touch events are built to &#160;allow for multiple touches on the screen at the same&#160; time.

Accepted Answer

The answer of Touch events are built to &#160;allow for...

Question 20

Which of the following is a pointer event?&#10;A) touchcancel&#10;B) mouseout&#10;C) pointerdown&#10;D) clientX

Accepted Answer

The answer of Which of the following is a pointer...

Question 21

Match between columns&#10;                        Premises: Devices that allow for multiple touches on the screen at the same time&#10;Devices that allow for multiple touches on the screen at the same time&#10;Devices that allow for multiple touches on the screen at the same time&#10;Devices that allow for multiple touches on the screen at the same time&#10;Devices that allow for multiple touches on the screen at the same time&#10;Devices that allow for multiple touches on the screen at the same time&#10;Devices that allow for multiple touches on the screen at the same time&#10;Devices that allow for multiple touches on the screen at the same time&#10;Devices that allow for multiple touches on the screen at the same time&#10;Devices that allow for multiple touches on the screen at the same time&#10;A set of events created by Apple for iOS&#10;A set of events created by Apple for iOS&#10;A set of events created by Apple for iOS&#10;A set of events created by Apple for iOS&#10;A set of events created by Apple for iOS&#10;A set of events created by Apple for iOS&#10;A set of events created by Apple for iOS&#10;A set of events created by Apple for iOS&#10;A set of events created by Apple for iOS&#10;A set of events created by Apple for iOS&#10;A pointing device that looks like a pencil and allows for precise touch input on a touchscreen&#10;A pointing device that looks like a pencil and allows for precise touch input on a touchscreen&#10;A pointing device that looks like a pencil and allows for precise touch input on a touchscreen&#10;A pointing device that looks like a pencil and allows for precise touch input on a touchscreen&#10;A pointing device that looks like a pencil and allows for precise touch input on a touchscreen&#10;A pointing device that looks like a pencil and allows for precise touch input on a touchscreen&#10;A pointing device that looks like a pencil and allows for precise touch input on a touchscreen&#10;A pointing device that looks like a pencil and allows for precise touch input on a touchscreen&#10;A pointing device that looks like a pencil and allows for precise touch input on a touchscreen&#10;A pointing device that looks like a pencil and allows for precise touch input on a touchscreen&#10;Provides access to device camera, microphone, and/or screen&#10;Provides access to device camera, microphone, and/or screen&#10;Provides access to device camera, microphone, and/or screen&#10;Provides access to device camera, microphone, and/or screen&#10;Provides access to device camera, microphone, and/or screen&#10;Provides access to device camera, microphone, and/or screen&#10;Provides access to device camera, microphone, and/or screen&#10;Provides access to device camera, microphone, and/or screen&#10;Provides access to device camera, microphone, and/or screen&#10;Provides access to device camera, microphone, and/or screen&#10;An argument that contains or references executable code&#10;An argument that contains or references executable code&#10;An argument that contains or references executable code&#10;An argument that contains or references executable code&#10;An argument that contains or references executable code&#10;An argument that contains or references executable code&#10;An argument that contains or references executable code&#10;An argument that contains or references executable code&#10;An argument that contains or references executable code&#10;An argument that contains or references executable code&#10;A browser or device interaction performed using touch, such as for scrolling the page&#10;A browser or device interaction performed using touch, such as for scrolling the page&#10;A browser or device interaction performed using touch, such as for scrolling the page&#10;A browser or device interaction performed using touch, such as for scrolling the page&#10;A browser or device interaction performed using touch, such as for scrolling the page&#10;A browser or device interaction performed using touch, such as for scrolling the page&#10;A browser or device interaction performed using touch, such as for scrolling the page&#10;A browser or device interaction performed using touch, such as for scrolling the page&#10;A browser or device interaction performed using touch, such as for scrolling the page&#10;A browser or device interaction performed using touch, such as for scrolling the page&#10;Provides user's latitude and longitude coordinates&#10;Provides user's latitude and longitude coordinates&#10;Provides user's latitude and longitude coordinates&#10;Provides user's latitude and longitude coordinates&#10;Provides user's latitude and longitude coordinates&#10;Provides user's latitude and longitude coordinates&#10;Provides user's latitude and longitude coordinates&#10;Provides user's latitude and longitude coordinates&#10;Provides user's latitude and longitude coordinates&#10;Provides user's latitude and longitude coordinates&#10;A specification created by Microsoft for Windows Phone and Windows 8&#10;A specification created by Microsoft for Windows Phone and Windows 8&#10;A specification created by Microsoft for Windows Phone and Windows 8&#10;A specification created by Microsoft for Windows Phone and Windows 8&#10;A specification created by Microsoft for Windows Phone and Windows 8&#10;A specification created by Microsoft for Windows Phone and Windows 8&#10;A specification created by Microsoft for Windows Phone and Windows 8&#10;A specification created by Microsoft for Windows Phone and Windows 8&#10;A specification created by Microsoft for Windows Phone and Windows 8&#10;A specification created by Microsoft for Windows Phone and Windows 8&#10;Reports charge level of device battery&#10;Reports charge level of device battery&#10;Reports charge level of device battery&#10;Reports charge level of device battery&#10;Reports charge level of device battery&#10;Reports charge level of device battery&#10;Reports charge level of device battery&#10;Reports charge level of device battery&#10;Reports charge level of device battery&#10;Reports charge level of device battery&#10;Provides access to device orientation and changes in orientation&#10;Provides access to device orientation and changes in orientation&#10;Provides access to device orientation and changes in orientation&#10;Provides access to device orientation and changes in orientation&#10;Provides access to device orientation and changes in orientation&#10;Provides access to device orientation and changes in orientation&#10;Provides access to device orientation and changes in orientation&#10;Provides access to device orientation and changes in orientation&#10;Provides access to device orientation and changes in orientation&#10;Provides access to device orientation and changes in orientation

Accepted Answer

The Answer of multitouch and Geolocation API and pointer events is...

Question 22

Provide two reasons why it's important to minimize download size for a mobile app.

Accepted Answer

The answer of Provide two reasons why it's important to...

Question 23

Explain the difference in how you reference coordinates between mouse events and touch events.

Accepted Answer

The answer of Explain the difference in how you reference...

Question 24

Explain what the Device Orientation API does and provide an example of how it could be used.

Accepted Answer

The answer of Explain what the Device Orientation API does...

Question 25

Explain why you need to be able to distinguish between app and device interaction when interpreting touch events.

Accepted Answer

The answer of Explain why you need to be able...

Question 26

What does it mean to load scripts responsively?

Accepted Answer

The answer of What does it mean to load scripts...

Question 27

Why is it necessary for geolocation code to allow for a lack of response to a permission request?

Accepted Answer

The answer of Why is it necessary for geolocation code...

Question 28

Which array contains coordinates of all touches currently on the screen?&#10;A) touches&#10;B) allTouches&#10;C) targetTouches&#10;D) changedTouches

Accepted Answer

The answer of Which array contains coordinates of all touches...

Question 29

Explain what the Battery Status API does and provide an example of how it could be used.

Accepted Answer

The answer of Explain what the Battery Status API does...

Question 30

The object returned by the getCurrentPosition()method of the Geolocation API contains a single property named ____ .&#10;A) coordinates&#10;B) coords&#10;C) geolocation&#10;D) geo

Accepted Answer

The answer of The object returned by the getCurrentPosition()method of...

Question 31

In the Google Maps API, you specify coordinates with the ____ constructor.&#10;A) Coords()&#10;B)Coordinates()&#10;C) New()&#10;D)LatLng()

Accepted Answer

The answer of In the Google Maps API, you specify...

Question 32

How can you make changes or enhancements to an app that uses a minified file?

Accepted Answer

The answer of How can you make changes or enhancements...

Question 33

Pointer events are supported only by certain versions of which browser?&#10;A) Mozilla Firefox&#10;B) Google Chrome&#10;C) Apple Safari&#10;D)Microsoft Internet Explorer

Accepted Answer

The answer of Pointer events are supported only by certain...

Question 34

In a touch __________, a browser checks a touched element for an event handler for multiple events, including some mouse events.

Accepted Answer

The answer of In a touch __________, a browser checks...

Question 35

In the Google Maps API, the ____ constructor creates a map object.&#10;A) Create()&#10;B)New()&#10;C) Map()&#10;D)LatLng()

Accepted Answer

The answer of In the Google Maps API, the ____...

Question 36

Large-volume users of the Google Maps API need an API __________, which is a string of characters that you incorporate into any request your code makes to Google to verify that your use is licensed.

Accepted Answer

The answer of Large-volume users of the Google Maps API...

Question 37

What is the difference between a synchronous callback and an asynchronous callback?

Accepted Answer

The answer of What is the difference between a synchronous...

Question 38

Converting a physical address to a pair of latitude and longitude coordinates is known as __________.

Accepted Answer

The answer of Converting a physical address to a pair...

Question 39

__________ is the process of making it clear to users what information your app wants to collect from them and how you intend to use it.

Accepted Answer

The answer of __________ is the process of making it...

Question 40

By adding the __________ &#160; method within event handler code, you prevent touch actions on&#160; specific elements from also triggering interface gestures.

Accepted Answer

The answer of By adding the __________ &#160; method within...

Question 41

What are some different ways to test a mobile app on different mobile platforms?

Accepted Answer

The answer of What are some different ways to test...

Deck 10: Programming for Mobile Devices and Touchscreens