Elance MongoDB Test Answers

In what language(s) is MongoDB supported?
Python
Javascript
PHP
All of above.
Perl

 

 

True or False? MongoDB can have foreign keys.

False
True

 

 

Which of the following expressions are valid JSON documents?

{Name: "Schoolify", url: 'www.schoolifybd.com'}
{Name: Schoolify, url: 'www.schoolifybd.com'}
{Name: "Schoolify": url: 'www.schoolifybd.com'}
{Name: "Schoolify". url: 'www.schoolifybd.com'}
{Name: "Schoolify", url: www.schoolifybd.com}

 

 

Which of the following are considered Core MongoDB operations?

Create, Select, Update, Drop
Create, Read, Update, Drop
Create, Read, Update, Delete
Create, Select, Update, Delete

 

 

MongoDB's query language uses operators that start with which character?

@
$
#
:

 

 

You can write custom MapReduce functions in MongoDB using:

Json
Python
Java
Javascript
PHP

 

 

Which of the following would you use to query an inventory collection to get all items of type "food" with price less than $34?

db.inventory.find({type: "food", price: {$lt: 34}}).explain()
db.inventory.find({type: "food", price: {$lt: 34}})
db.inventory.find({type: "food", price: {$lte: 34}})

 

 

The interactive "mongo" shell interface is based on:

JavaScript
Python
Ruby
Scala

 

 

Which of the following is syntactically correct for searching the "posts" collection for a post with the title of "Big News Story"?

db.posts.find(title: 'Big News Story');
posts.search('title': 'Big News Story');
posts.search({'title': 'Big News Story'});
db.posts.find({title: 'Big News Story'});

 

 

How can you optimize document storage?

Specify an explicit, smaller _id value
Use shorter field names within documents
Embed small documents within other documents
(All of these)

 

 

This replication process is

synchronous
asynchronous

 

 

Which of the following terms describe MongoDB?

Document-oriented DBMS
Static schema
Configurable cache
Relational database

 

 

Instead of tables, MongoDB stores data in structures called:

Collections
Pages
Maps
Tuples

 

 

What does MongoDB's Sharding provide?

Automatic balancing for changes in load and data distribution
Automatic failover
Easy addition of new machines without down time
Scaling to one thousand nodes
All of these

 

 

Which of the following statement are true

The _id of a document need only be unique on the shard in which the document is housed
By default, there is no index on _id. It is best practice to add one if you expect to query based on _id.
If you do not specify and _id when doing an insert, the driver will create one for you
You must specify and _id when inserting documents

 

 

The maximum BSON document size is:

8 megabytes
4 megabytes
16 megabytes
12 megabytes

 

 

MongoDB supports UTF-8 for strings in stored objects and queries:

Sometimes
Never
Always

 

 

Which of the following statements are true about MongoDB

MongoDB supports joins
MongoDB does not support transactions and operations are not atomic.
MongoDB does not support transactions but operations are atomic.
MongoDB supports transactions

 

 

Which platform does MongoDB support?

Mac OS X
Windows
Linux
All of above

 

 

The MongoDB database is capable of:

ACID-compliant transactions
Multi-table joins
Atomic (per document) operations
Multi-object commits with rollbacks

 

 

MongoDB stores documents in structures called

BSON objects
JSON objects
JavaScript objects
ODB objects

 

 

Which method should be used to create an index on a collection, if it does not already exist?

ensureIndex()
createIndex()
reIndex()
checkIndex()

 

 

To perform a search on a collection, and obtain a cursor object for the results, use:

query()
findAndModify()
find()
findOne()

 

 

The map-reduce operation uses a temporary collection for data processing; The benefit of this behavior is that the operations:

Do not take up any additional space in the database
Are more secure than they would be if performed on a named collection
Can be performed concurrently on the same collection, without affecting the intermediate states
Are more accurate than they would be if performed on the live data

 

 

Which statement of the followings could NOT drop an index?

db.runCommand({dropIndexes:'foo', index : '*'})
db.runCommand({dropIndexes:'foo', index : {y:1}})
db.myCollection.reIndex()
db.collection.dropIndex({x: 1, y: -1})
db.collection.dropIndexes();

 

 

To create an index for user_name field on user collection, which of the following is the correct syntax?

db.user.ensureIndex({user_name:1});
db.user.createIndex({user_name:1});
db.user.saveIndex({user_name:1});
db.user.attachIndex({user_name:1});

 

 

The currently preferred replication method is called:

Replica pairs
Master/Slave
Arbiter members
Replica sets

 

 

TSV files should be expected to contain:

Document indexing for a named Collection
Binary data logs
Tab-separated text fields
Geographic data coordinates

 

 

To atomically modify and return a single document from a collection, use:

upsert()
aggregate()
findAndModify()
update()

 

 

Indexes in mongodb are NOT good for:

Collections where the number of reads is much greater than the number of writes.
Collections which are write-intensive

 

 

Which feature of mongoDB is used to balance load among multiple machines?

GridFS
Sharding
Replica Sets
Geospatial Indexing
BSON

 

 

MongoDB uses GridFS to:

Store large files, distributed as smaller pieces
Prevent data loss after a crash or hard shutdown
Reduce and summarize large data structures
Index and sort extremely large sets of documents

 

 

The core database operations in MongoDB are abbreviated as:

BSON
JSON
CRUD
MDB

 

 

In MongoDB V2.4, what type of JavaScript engine is used to execute all JavaScript on Mongo shell ?

Rhino
SpiderMonkey
JavaScriptCore
Futhark
V8

 

 

The aggregation framework is most similar to which facility from the world of relational databases

views
foreign keys
Group by
constraints

 

 

The binary log of transactions used to recover the database after a crash is called the:

Journal
Master Replica
Primary Shard
Ledger

 

 

When Storing large files in MongoDB one is encouraged to use...

GridFS
BSON
MongoFS
None of these

 

 

Authentication in MongoDB is:

Available with sharding since version 1.8.
Off by default.
U udp firewall between mongod and client connections.
Based on Linux user authentication.
Not needed if we use a non-standard port for mongod.

 

 

MongoDB's Replication can be in Master-Slave form or _______ form.

Replica Sets
None of above
Replications
Sharding

 

 

Which of the following is not a stage in the aggregation pipeline

sort
group
having
limit

 

 

Which of the following atomic operations would you use to add a value to an array only if it does not already exist in the array?

$inc
$pop
$push
$addToSet
$pull

 

 

While replication provides data redundancy, journaling is also recommended because:

It allows the use of Replica Sets in addition to Replica Pairs
It improves write performance on the journaled database
It allows faster, more reliable recovery after a crash
It improves read performance on the journaled database

 

 

Which feature of mongoDB is used for data redundancy?

GridFS
Embedded Documents
Sharding
BSON
Replica Sets

 

 

MongoDB can have indexes on Array Elements?

False
True, MongoDB indexes the first non-empty element of the array.
True, MongoDB indexes the first element of the array.
True, MongoDB indexes each element of the array.

 

 

What's the difference between `save()` and `insert()` in mongo shell?

No difference between them.
save() updates the document if if already exists (judges by comparing them byte by byte); inserts if it's new.
save() updates the document if if already exists (judges by their indexed keys); inserts if it's new.
save() updates the document if if already exists (judges by if they already contains `_id`); inserts if it's new.
None of above is correct.

 

 

MongoDB uses the acronym TTL to mean:

Table Time Limit
Temporary Table Listing
Time To Live
Total Time Limit

 

 

Indexing

Makes all writes faster
Makes writes that involve the index faster
Slows down reads that involve the index
Slows down writes that involve the index

 

 

An operation is said to be "idempotent" if it is proven to:

Eventually produce consistent results, if run a sufficient number of times with the same inputs
Produce varying results when run multiple times, even with the same input
Produces results within linear time, compared to the number of inputs
Produce consistent results over multiple runs, given the same input

 

 

Which of the following binaries handles routing of sharded queries to the proper shard?

mongo
mongorouter
mongos
mongod

 

 

MongoDB document names cannot start with the characters:

@ or #
( or )
$ or .
^ or *

 

 

What do drivers use with protocol on the wire?

Protocol Buffers
BSON
REST
JSON

 

 

Due to their default behavior, Capped Collections are ideal for storing:

Non-vital, chronological records, like logs
Important records like user accounts or invoices
Records that require high levels of consistency, e.g. account balances or sales figures
Extremely large, unordered lists of documents

 

 

When a Capped Collection becomes full, and a new document is added:

The collection expands, based on size_increment property, only if auto_resize is enabled
The oldest entry is overwritten with the new document
The newest stored entry is overwritten by the new document
The operation fails

 

 

What is the extra space allocated to document on the disk to prevent moving a document when it grows as the result of update() operations.

map-reduce
pcap
padding
partition

 

 

A Priority 0 or "passive" replica member:

Does not vote in elections during a failover
Does not accept read operations
Does not maintain a full copy of the data set
Cannot become a primary member

 

 

"write concern" allows an application to:

Ensure that data storage is evenly distributed between servers
Track the amount of space remaining after each database write
Observe the success or failure of database writes
Create event handlers that fire in response to database writes

 

 

"read preference" affects how an application:

Selects a replica set member to read from
Selects the index to use when searching for a document
Selects a document collection for a read operation
Sorts the results of a read operation

 

 

All writes in MongoDB Must go the primary

False
True by default but can be overridden
True
False by default but can be overriden

 

 

If you have a compound index on multiple fields (a,b,c), you can use it to query on:

(a), (a,b), or (a,b,c)
Any combination of a,b,c
(a), (b), or (c)
Only (a,b,c)

 

 

The equivalent for like %keyword% on mongodb find is:

db.collection.find({field:{$regex:{/keyword/},$options:"i"})
db.collection.find({field:"/keyword/i")
db.collection.find({field:{$regex:{/keyword/i}})

 

 

How many collections are created when use use gridfs to store large files

2
1
3
0

 

 

What is the easiest way to do tasks like totaling or averaging field values in MongoDB newer versions?

Use Map-Reduce
Use Aggregation Framework
Use newly-implemented $avg and $total collection operations.

 

 

You want to minus one to field foo, what should you use?

{ foo : { $inc : -1 } }
{ $inc : { foo : -1 } }
{ foo : { $dec : 1 } }
{ $dec : { foo : 1 } }

 

 

Which of the following statements are true about the MongoDB Write Consistency model

Eventually consistent by default
Depends on the value of w parameter specified in the getLastError cal.
Always strongly consistent
Strongly consistent by default, can be made eventually consistent

 

 

Which of the following is the correct operation to query a document for both 'Football' and "Reading" within the interests data collected from a profile?

db.profile.find({interests: "Football", interests: "Reading"})
db.profile.find({interests: {$all : ["Football", "Reading"] }})
db.profile.find({interests: {$in: ["Football", "Reading"] }})
db.profile.find({$or: [{interests: "Football"}, {interests: "Reading"}]})

 

 

How many data types are available in MongoDB?

6
2
8
4

 

 

When a replica set election takes place which types of nodes can participate

regular, hidden, and arbiters
only arbiters
only regular nodes
regular and arbiters but not hidden

 

 

Which datum does MongoDB use for calculating geospatial coordinates?

LVM
TSV
GPS
WGS84

 

 

What term is use to describe the order that a database stores documents on disk?

sort order
natural order
write order
oplog

 

 

Which of the following is not a BSON serialization type?

ObjectId
Regular expression
Hash table
Double

 

 

In MongoDB's Geospatial Indexing, if you want to create & use index on EARTH, what is NOT TRUE?

Using decimal degrees in (longitude, latitude) order.
Indexing documents by multiple locations is possible in recent versions.
Adding spherical : true inside geoNear query.
Creating a "2d" index first.
Specifying in key like { lat : -50, lon : 13 }

 

 

A property used to address servers based on their real-world locations is called:

GeoIP
Sharding
Cluster tagging
Data-center awareness

 

 

You cannot use characters among /\. "*<>:|? in database names, in release version

<=2.0
>=2.2
>=2.0
<=2.2
>=1.8

 

 

MongoDB queries return a limited size (or "threshold") of results by default, usually:

101
256
4096
512

 

 

What is the minimum number of mongod instances that may make up a replica set?

1
3
4
2

 

 

Haystack Indexes are typically used to:

Index large sets of documents for quick keyword searches
Improve the performance of 2D geospatial queries
Improve the performance of spherical coordinate queries
Provide full-text indexing and searches within large, individual documents

 

 

Suppose you have a collection foo with an index created using the statement db.foo.ensureIndex({a:1, b:-1, c:1}). Which of the following queries could use the index

db.foo.find({c:1})
db.foo.find({b:1})
db.foo.find({a:1, b:1})
db.foo.find({c:1, b:1})

 

 

By default, MongoDB allows up to _____ collections.

32,768
12,000
Unlimited
65,536
24,000

A "SQLError" object is:
An API library for MySQL databases
An object that indicates an error in the webpage
A callback object
An object that is thrown when an error occurs when manipulating a database


When catching exceptions and returning errors, which of the following sides are critical to warn about results?
HTML5/CSS3 callbacks
Native side callbacks
XML and JSON callbacks
JavaScript error callbacks


In order to deploy a Phonegap app to an Android device you will need a
None of these
An Android Provisioning Profile
A Phonegap Certificate
A Google Certificate


In order to deploy a Phonegap project to an iOS device you must use which IDE?
Eclipse
Xcode
Webstorm


The User Interface in Phonegap takes place in what kind of object
NetworkView
PencilView
InternetView
WebView


Cordova is the opensource foundation for Phonegap
True
FALSE


In order to build an app in Phonegap you will need to know
HTML
Objective-C
HTML and Javascript
Javascript


True or False? The Eclipse IDE can be used to debug both Javascript code and native side PhoneGap plugins in an Android app?
False
True


It is possible to use bootstrap.js in a Phonegap App
Only when deploying to tablets
Only if you remove the CSS media queries
FALSE
True


Which of these languages ​​are used by a PhoneGap app?
JavaScript
All of these
Native languages
HTML5/CSS3


Which of the following best describes a hybrid app?
One that has features of Windows and Android native application.
One that has features of IOS and Android native application.
One that has features of IOS and Windows native application.
One that has features of both a web application and a native application.


By default the first user created content in a Phonegap app is found in:
index.css
index.htm
index.html
index.js


Which Language will you need to know in order to build a custom Phonegap plugin for Android
Objective-C
Ruby
C#
Java


When can PHP be used in conjunction with a Phonegap app?
Only the Android environment supports PHP
Only when making network protocols via (XmlHTTPRequests, WebSockets,..) to communicate with backend services.
You can write any Phonegap application using PHP
You can use a plugin to enable you to write an app with PHP


What function do you need to use to communicate between the Cordova JavaScript and native environment?
cord_JS.exec
javascript.exec
cordova.get
cordova.exec


Phonegap is a
Web application framework
IDE
Mobile application framework
Javascript framework


When writing a Phonegap app for iOS you would tell Phonegap which plugins you wanted to use in which file:
main.m
libCordova.a
config.xml
Localizable.strings


Developing a Phonegap plugin for iOS requires you to interface Javascript with which language?
Python
Java
Objective-C
Cocoa Touch


Which event allows us to know when the Cordova application is fully loaded?
"ondeviceready"
event.focus()
There's no way to know when a PhoneGap app is fully loaded
"pageinit"


It is safe to make calls to the Phonegap API after which Javascript event fires:
onLoad
viewDidLoad
deviceReady
onBodyLoad


Changes to the DOM in javascript need to be triggered after which Event:
online
resume
phonegapstart
deviceready


Which language is the entry point for any plugin?
CSS3
XML
cURL
JavaScript


When creating an iOS Phonegap project from the command line the compiler creates which files?
Config.xml
All of the above
WWW folder
Default icons


Phonegap is not compatible with which Javascript framework
Zepto JS
Phonegap is compatible with all HTML, CSS and Javascript including frameworks.
Angular JS
Backbone JS


Phonegap is owned by:
Adobe
Nitobi
Microsoft
Google


Phonegap does NOT support the following Platforms
OS/2
iPad
Windows 8
Windows Phone


In order to know device reachability, we can use the following PhoneGap object:
window.open();
radio.connection
navigator.connection
navigator.connection.cell_3g


PhoneGap is ___ solution.
Paid solution
Open source
subscription solution
Framework


Regarding the Notification plugin, the "confirmCallback" is called when the user:
Presses one of the buttons on the confirmation dialog box
Answers an incoming phone call
Presses one of the buttons on the AppBrowser
Swipes to unlock their phone


What sytax would you use to execute custom code when a certain event fires:
document.exectueCode(
document.addEventListener(
window.startEvent(
window.executeCode


When writing a Phonegap app for android you would tell Phonegap which plugins you wanted to use in which file:
permissions.xml
AndroidManifest.xml
platform.xml
config.xml


The Adobe PhoneGap Build service allows compiling a project for multiple platforms in the cloud, by uploading:
HTML, CSS and Javascript assets
HTML, PHP and Sencha assets
Configuration files and Javascript logic
Web and native compiled sources


What is required to run the Phonegap Command Line Interface
Java
BSD
UNIX
Node.js


The syntax to call a native Phongap feature from within its Javascript file begins with
phonegap.start(
cordova.exec(
plugin.start(
feature.start(


jquery is a required library in a Phonegap project
TRUE
False


In order to deploy a Phonegap app to an iPhone or iPad you will need a:
A Phonegap Certificate
A Certificate from Apple
A Provisioning Profile from Apple
Provisioning Profile and Certificate from Apple (both C and D)


Phonegap requires jquery
Only the minimized version
TRUE
TRUE; jquery version 1.3 and above
False


Phonegap requires you to use XHTML
TRUE
TRUE after Phonegap version 2.3
False


Phonegap uses native UI instead of CSS to position HTML elements
False
TRUE


The "onprogress" property is most closely associated with which PhoneGap object?
FileTransfer
notification.alert
InAppBrowser
notification.confirm


What does function "camera.getPicture" do?
Open the device's default camera application
Open the device's gallery of images
Upgrade the user's camera to the latest software version
Select a photo for sharing through email, text or social media


Which of the following best describes PhoneGap's architecture?
PhoneGap has a MVC architecture.
PhoneGap has a template based architecture.
PhoneGap has a two tier architecture.
PhoneGap has a plugin-based architecture.


To which directory/directories do you copy your splash screen image for Android development?
Res/drawable directories
Resources/splash directory
Splash/draw directory
File/popout directories


When developing iOS PhoneGap plugins, you execute the plugin by using a call from:
JavaScript using window.open function
All of these are valid
JavaScript using cordova.exec function
a custom HTML5 tag


Which callback function do we need to implement in order to get info from the Compass using the CompassHeading object?
"headingSuccess"
"degreesCompass"
"compassSuccess"
"compassGo"


Which of the following objects can be graphically customized?
notification.alert
None of these
notification.confirm
notification.beep


A plugin for which native capability is currently only available with a third-party plugin
NFC
GPS data
Camera
Local data storage


Which class should be extended by Android plugins?
PhoneGapPlugin
CordovaPlugin
PluginIntent
Activity


Javascript Lambda Functions can be used in Phonegap
Only if they don't call cordova.exec
YES
Only if they are not nested
NO


In order to generate a clean, new, PhoneGap project in Android using a Terminal, we need to:
Generate iOS version before an Android version
Install an Eclipse IDE special command-line bundle
Any of the above will allow us to generate a project
Make sure that the "tools" and "platform-tools" folders are in the PATH


Anonymous Javascript functions are prohibited in Phonegap
Only if they are not contained within a Javascript closure
NO
only if they rely on variables in native code
YES


You can use high resolution graphics for retina display devices in Phonegap
Not unless the camera is 8megapixels or more
Only if you set the pixel dimensions of the container to the pixel dimension of your high resolution graphics
FALSE
True


iOS plugins should use the "pluginInitialize" method for their ______ logic.
API
startup
SQL injection
shutdown


In order to access device-level features (i.e. access to camera) in version 3.0, you must implement it as a plugin. The plugin is added (or removed) to your project by:
Using the CLI’s plugin command
Downloading from the Phonegap website
Downloading directly from Github
Manually adding to your project


The Phonegap API has a function for taking a photo with the device camera or retrieving a one from the device image gallery. Which is correct?
phonegap.takePhoto
camera.getCamera
camera.getPhoto
camera.getPicture


Which of the following events is fired when a PhoneGap application is sent to the background?
"pause"
"pagebeforeshow"
"ondeviceready"
"resume"


You can only access the camera on an iPhone when using Phonegap 2.7 and above
False
TRUE


It is possible to host a PHP server locally in Phonegap
False
TRUE


To which file in your Cordova-Android application's folder do you need to add your plugin?
res/xml/config.xml
res/plugin.xml
configPlatform/android.xml
res/drawable/cordova.xml


Which of these permissions are required when using the PhoneGap Contacts API in Android?
android.permission.READ_CONTACTS
<plugin name="Contacts" value="org.apache.cordova.ContactManager" />
android.permission.GET_ACCOUNTS, android.permission.READ_CONTACTS, android.permission.WRITE_CONTACTS
<Privilege> <Name>ADDRESSBOOK</Name> </Privilege>


The "capture" object is assigned to the navigator.device object, therefore it has _______ scope in Javascript.
global
limited
augmented
permission-based


You will need a Macintosh computer in order to produce a Phonegap app that will be distributed in the Apple iTunes App Store
False
True


In order to compile and run a Phonegap app in the iPhone simulator with Xcode you will need
A Provisioning Profile from Apple
A Certificate from Apple
None of these
A Phonegap Certificate


CSS Media Queries are required in Phonegap
TRUE
False
Only when deploying to tablets
Only for high-resolution devices


The "options" string for the InAppBrowser must not contain:
Commas
Letters
Numbers
Blank spaces


The PhoneGap Storage API is based on which database's specifications?
W3C WebHTML
PhoneSQL Database
W3C WebSQL
WWC SQLWeb


What is the main function of the localStorage object?
It provides the ability to record and play back audio files on a device
It obtains information and performs operations specific to the user's locale and timezone
It allows you to save data as key-value pairs through the W3C storage interface
It allows you to save data as key-value pairs through the user defaults of the device


To debug an app using the iOS simulator, you can use Safari’s developer tools
FALSE
True


In Phonegap for Android the MainActivity class is extended by what Cordova class
AndroidGap
PhoneGap
DroidGap
AndroidActivity


Which of the following are valid methods of the FileReader object?
readAsDataURL, truncate, moveTo
readAsDataURL, readAsText, readAsBinaryString
moveTo, copyTo, readAsBinaryString
readAsDataURL, getParent, createWriter


Cordova is distributed by
Adobe
Apache
Apple
Nitobi


Which of the following code can be used to override the back button behavior of a device?
window.addEventListener("backbuttonpressed", function() { // New behavior here }, false);
function onBackKeyDown() { // New behavior here }
function onDeviceReady() { device.backButton = function () { // New behavior here } }
document.addEventListener("backbutton", function() { // New behavior here... }, false);


Phonegap conforms to what browser protocol:
Opera
WebKit
Depends on destination OS
Mozilla


When debugging an iOS plugin's Objective-C side, which of the following lines should be added to config.xml?
None of the above
<plugin name="service_name" value="PluginClassName" />
+ (CDVPluginResult*)resultWithStatus:(CDVCommandStatus)statusOrdinal messageAs...
exec(<successFunction>, <failFunction>, <service>, <action>, [<args>]);


In Phonegap 3.0, the connection object is exposed via:
navigator.connection.WIFI
navigator.network.connection.type
navigator.connection.type


Why is using a 9-patch technique recommended for adding a SplashScreen for Android?
It's necessary to keep the splashscreen visible for several seconds before launching the app
It's necessary to avoid splashscreen distortion in different screen sizes
9-patch is not necessary in SplashScreens for PhoneGap projects
Because 9-patch improves SplashScreen image resolution


Which of the following is NOT true about the Geolocation object?
No guarantee is given that the object returns the device's actual location
It provides location information for the device
It uses synchronous functions that will block the main thread
It is based on the W3C Geolocation API Specification


Phonegap requires you to use HTML5
TRUE after Phonegap version 2.3
False
TRUE


When the executeSql method of a SQLTransaction is called it will invoke its callback with a:
SQLCallback
SQLexec.exe
SQLStatusCheck
SQLResultSet


Which of these parameters are not required when creating a Cordova project from the iOS command line?
Project name
Package location
Package name
Project location


If you wish to use Parse.com to host a database for your Phonegap app you will have to use a Plugin
False
Only if you need the internet
TRUE
Only if you are using Javascript


Which of these are NOT PhoneGap supported mobile platforms?
Firefox OS
Web OS
Tizen and Bada
(all of these)


Which format is used to encode retrieved data through the FileReader object?
MD5-SHA1
JSON format
UTF-8
base64


Which method should be overriden by an Android Plugin?
"execute"
"cordova"
"service"
"action"


If you forget to add your iOS plugin's mapping to config.xml, what could happen?
The app does not crash, but a native dialog is displayed with an error
The app crashes, and the Xcode log shows an error
The app crashes, but it will not return an error
The app does not crash, but the Xcode log shows an error


When a call to a Database object's transaction method is performed, what PhoneGap object should be used in order to invoke callbacks?
SQLTransaction
new JavaTransaction(args)
SQLResultSetRowList
SQLCallback


Phonegap uses a simplified version of Javascript
False
TRUE


Assuming you have your platform SDK, Node.js and the Phonegap utility already installed, what is the correct command for building a project for version 3.0?
$ phonegap create myproject com.example.myproject MyProject
$ cordova create myproject com.example.myproject MyProject
$ ./create myproject com.example.myproject MyProject
$ phonegap ./create myproject com.example.myproject MyProject


What PhoneGap object can be used to get the device platform name?
Platform
Device
Notification
Window.device


The default security policy for outside domain access is to:
Allow all network access to outside domains.
Forbid all network access to outside domains
Forbid network access for some dangerous domains
Allow all network aceess for some predefined domains


If you write an App in Phonegap, you will be able to run it on Android and iPhone without modifying your custom Javascript
Maybe
No
Yes


Which of the following statements is true?
All of these
The Connection object allow us to know the WiFi status, but not celullar connection
PhoneGap can't recognize the device OS that is currently running
You can use FileWriter to write to a file multiple times


When embedding Cordova's WebView on Android, what happens if you don't add the thread pool?
Web pages will not load completely
The plugins will use incorrect threads
The WebView plugin will operate at slower speeds
The plugins will have no threads to run on


Remote debugging on an iOS device is possible on some platforms by using which of the following:
Chrome
Safari
Firebug
Weinre


In Phonegap 3.0 a Plugin is called a
Tool
Interface
Feature
Plugin


Which of the following is true about the Capture object?
It is assigned to the navigator.device object, and therefore has global scope
It is assigned to the window object, and therefore has a local scope
All of these
It does support image and video capture, but not audio capture


What is the correct command for installing a Phonegap plugin via CLI? (Example: Camera plugin)
$ phonegap local plugin add https://git-wip-us.apache.org/repos/asf/cordova-plugin-camera.git
$ phonegap plugin add https://git-wip-us.apache.org/repos/asf/cordova-plugin-camera.git
$ phonegap local plugin add camera
$ cordova local plugin add https://git-wip-us.apache.org/repos/asf/cordova-plugin-camera.git


Regarding Android PhoneGap plugins, which thread is used to run JavaScript code in a WebView?
An activity thread
A private thread
WebCore
UI Thread


Which of the following are the two properties handled by the "batterycritical" event?
criticalLevel (to know whether the battery is below 10% or not) isPlugged (to know whether or not the device is plugged in)
level (to get battery percentage) isPlugged (to know whether or not the device is plugged in)
level (to get battery percentage) isDamaged (to know whether or not the device has a damaged battery)
None of the above is handled by the "batterycritical" event


Phonegap build can accommodate all third-party plugins for its build process?
TRUE
False


When hiding a splash screen in iOS, what value do you need for "AutoHideSplashScreen" in the config.xml file?
true
navigator.splashscreen.hide()
3000
false


In order to submit a Phonegap app to the Apple iTunes App Store you would need to use
A Phonegap Certificate
XCode and "Application Loader"
"Phonegap Build"
Only "Application Loader"


Which thread is used to execute iOS plugin methods?
UIWebView Thread
Plugin methods don't execute in any thread
WebCore Thread
UI Thread


Which of the following statements is NOT true?
In Android multiple "watchPosition" can be in effect at one time
With geolocation.watchPosition, we're able to track significant position changes
All of these are true
In iOS, multiple "watchPosition" can be in effect at one time


You will need a Macintosh computer in order to produce a Phonegap app that will run on an iPhone
TRUE
False

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