ITExamDump는 전문적인 IT인증시험덤프를 제공하는 사이트입니다.BCP-811인증시험을 패스하려면 아주 현병한 선택입니다. ITExamDump에서는BCP-811관련 자료도 제공함으로 여러분처럼 IT 인증시험에 관심이 많은 분들한테 아주 유용한 자료이자 학습가이드입니다. ITExamDump는 또 여러분이 원하도 필요로 하는 최신 최고버전의BCP-811문제와 답을 제공합니다.
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시험 번호/코드: BCP-811
시험 이름: BlackBerry (Developing Java Applications for the BlackBerry Platform)
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Q&A: 122 문항
업데이트: 2013-09-24
IT업계의 치열한 경쟁속에 살아 남으려면 자신의 능력을 증명하여야 합니다. 국제승인을 받는 IT인증자격증을 많이 취득하시면 취직이든 승진이든 이직이든 모든 면에서 이득을 볼수 있습니다. 최근 BlackBerry인증 BCP-811시험에 도전하는 분이 많은데 ITExamDump에서 BlackBerry인증 BCP-811시험에 대비한 가장 최신버전 덤프공부가이드를 제공해드립니다.
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NO.1 Consider the following small application which creates a linked list like structure:
After execution, at which statement does the ListElement object created at line 6 become a candidate for
garbage collection? (Choose one.)
A. 16
B. 17
C. 21C.21
D. 22D.22
E. 23E.23
Answer: B
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NO.2 An application receives notification that a new data object is being saved in the RuntimeStore. It may
take up to 60 seconds to save this data. Which method should the application use to obtain the object
from the RuntimeStore? (Choose one.)
A. get( long objectUID )
B. getInstance()
C. fetch( Class objectClass, long timeout )
D. waitFor( long objectUID )
E. put( long objectUID, Object anObject)
Answer: D
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NO.3 Which three of the following options are contained in a component pack? (Choose three.)
A. BlackBerry Device Simulator
B. JavaDocs
C. API Library
D. Code signing keys
E. Unit Tests Framework
Answer: A,B,C
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NO.4 A developer is writing a game with custom graphics and animations that will need to fit on multiple
screen sizes for various BlackBerry devices. The developer needs to minimize the number of images
created for the game. Which API will support these requirements? (Choose one.)
A. SVG
B. Display
C. Transition
D. Multimedia
E. Game
Answer: A
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NO.5 Which block of code will ensure that a network connection has been closed? (Choose one.)
A. Exhibit A
B. Exhibit B
C. Exhibit C
D. Exhibit D
E. Exhibit E
Answer: A
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NO.6 A customer needs an application that will store temporary data and expose it to other BlackBerry device
applications. Which API will meet this requirement? (Choose one.)
A. RuntimeStore
B. PersistentStore
C. Location Based Services
D. Global Events
E. Connector
Answer: A
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NO.7 A developer is designing a BlackBerry device application that provides summaries of large amounts of
data. The summaries require extensive computations. Which design approach will meet these
requirements? (Choose one.)
A. Store the full set of data locally on removable media using a compressed format
B. Supplement memory available on the BlackBerry device and compute the results locally
C. Use URL encodings to expedite the transfer of data between a remote server and the
BlackBerry device
D. Compute the summary on a remote server and access the results through a BlackBerry
Enterprise Server connection
E. Use local storage and the floating point processor on the BlackBerry device to speed up computations
Answer: B
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NO.8 Consider the addTask() method defined below. Its purpose is to receive incoming tasks and put them
into a Vector, _tasks. Another thread will continuously remove the task at index 0 from the Vector.
Assuming that addTask() is being invoked at a rate roughly equal to the rate at which the tasks are being
processed, which concurrency issue may occur during execution? (Choose one.)
A. Livelock
B. Deadlock
C. Race condition
D. Starvation
E. Unfairness
Answer: D
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NO.9 Which two of the following operations should be avoided on the main event thread? (Choose two.)
A. Pushing a screen onto the display stack
B. Displaying a Dialog screen
C. Performing network communication
D. Calling the sleep method
E. Capturing of keyboard input
Answer: C,D
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NO.10 A BlackBerry device application collects information about several hundred books. The application
needs to sort books by title. Which combination of data structures should be used to manage the objects?
(Choose one.)
A.net.rim.device.api.util.SimpleSortingVector and net.rim.device.api.util.StringComparator
B. java.util.Hashtable and net.rim.device.api.util.StringComparator
C. net.rim.device.api.util.StringRepository and net.rim.device.api.util.StringPattern
D. java.util.TreeSet and net.rim.device.api.util.StringComparator
E. java.util.Stack and net.rim.device.api.util.StringComparator
Answer: A
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NO.11 Consider the Counter class whose code is below:
Assuming that the go() method is always invoked serially, why is a different count printed at the end
almost every time that it is invoked? (Choose one.)
A. Therun() method is not declared "synchronized"
B. The _count variable is not declared "synchronized"
C. The ++ operator is not atomic
D. The _count variable overflows
E. The Counter class is not declared "synchronized"
Answer: C
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NO.12 Which push header should be used to verify that push requests are received by a BlackBerry device
application? (Choose one.)
A. X-Rim-Push-Reliability: Transport
B. X-RIM-Push-Deliver-Before Mon, 03 Aug 2009 15:52:00 GMT
C. X-RIM-Push-Deliver-After: Mon, 03 Aug 2009 15:52:00 GMT
D. X-Rim-Push-Priority: High
E. X-Rim-Push-Reliability: Application
Answer: E
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NO.13 Consider the code below:
What is a more efficient way of calculating the midpoint? (Choose one.)
A. int midpoint = (int) ((double) width) / 2.0;
B. int midpoint = Fixed32.div(width, 2);
C. int midpoint = (int) (width * 0.5f);
D. int midpoint = width >> 1;
E. int midpoint = width >> 2;
Answer: D
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NO.14 The following application is set to auto-run at startup:
Which approach would most reliably solve the problem this application will encounter? (Choose one.)
A. It should callThread.sleep() for ten seconds before pushing the screen to verify that the
BlackBerry device has completed its boot up process
B. Threads should be moved to their own standalone class so that they do not cause a security exception
C. Theint values in the MenuItem constructor should equal the y MenuString length to leave enough room
for the string
D. It should use theApplicationManager.inStartup() before pushing the screen to verify that the BlackBerry
device has completed its boot up process
E. It should use theApplicationManager.inStartup() before pushing the screen to verify that the BlackBerry
device has completed its boot up process
F. It should use theApplicationManager.inStartup() before pushing the screen to verify that the BlackBerry
device has completed its boot up process
G. ThemakeMenu method of MainScreen must be overridden to use a menu
Answer: D,E,F
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NO.15 Which keys are required to use the encryption classes in the Java API in order to store encrypted data
on a BlackBerry device? (Choose one.)
A. Code development keys
B. Code signing keys
C. Code runtime keys
D. Code encryption keys
E. Code storage keys
Answer: B
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NO.16 An application requires the creation of a custom field that can display animation. Which class and
method combination should be used to accomplish this task? (Choose one.)
A. Field.paint(Graphics graphics)
B. MainScreen.paint(Graphics graphics)
C. Field.subpaint(Graphics graphics)
D. Screen.draw(Graphics graphics)
E. GameCanvas.paint(Graphics graphics)
Answer: A
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NO.17 An application is needed that can store a list of sales data and customer information. The application
will also need the ability to search through this data and summarize it in an efficient manner. Which data
storage mechanism will assist in meeting all of these requirements? (Choose one.)
A. SQLite
B. PersistentStore
C. RecordStore
D. RuntimeStore
E. FileConnection
Answer: D
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NO.18 Which two of the following classes could be used to check the coverage status? (Choose two.)
A. Radio
B. ConnectionFactory
C. TransportInfo
D. CoverageSate
E. CoverageInfo
Answer: C,E
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NO.19 A developer has been asked to create an application that will display the full name of all people in a
BlackBerry device user address book. The following code is written:
Which two of the following actions must be taken before this code is executed to ensure
compatibility across all versions of BlackBerry Device Software? (Choose two.)
A. The application should initialize all entries of thecontactName String array to empty Strings
B. The application should use theContact.countValues method to verify that the Contact.NAME field
contains an entry
C. The application should verify that it can write to the user address book using
theApplicationPermissions API
D. The application should use theisNull method to verify that the Contact.NAME values are not null
E. The application should use theContactList.isSupportedField method to verify that the
Contact.NAME field can be read
Answer: B,E
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NO.20 Consider the code below:
How will the connection route be affected? (Choose one.)
A. The connection is never routed through the BlackBerry Infrastructure
B. The connection is routed over the cellular network
C. The connection is routed over the Wi-Fi
D. The connection is routed over the BlackBerry Internet Service -B
E. The connection is never routed through the BlackBerry Enterprise Server
Answer: E
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