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試験番号：BCP-811問題集
試験科目：Developing Java Applications for the BlackBerry Platform
最近更新時間：2014-03-26
問題と解答：全122問
100％の返金保証。1年間の無料アップデート。
JPexamのBlackBerryのBCP-811の試験問題は同じシラバスに従って、実際のBlackBerryのBCP-811認証試験にも従っています。弊社はずっとトレーニング資料をアップグレードしていますから、提供して差し上げた製品は一年間の無料更新サービスの景品があります。あなたはいつでもサブスクリプションの期間を延長することができますから、より多くの時間を取って充分に試験を準備できます。JPexamというサイトのトレーニング資料を利用するかどうかがまだ決まっていなかったら、JPexamのウェブで一部の試験問題と解答を無料にダウンローしてみることができます。あなたに向いていることを確かめてから買うのも遅くないですよ。あなたが決して後悔しないことを保証します。
BCP-811認定試験の準備をするために一生懸命勉強して疲れを感じるときには、他の人が何をしているかを知っていますか。あなたと同じIT認定試験を受験する周りの人を見てください。あなたが試験のために不安と感じているとき、どうして他の人が自信満々で、のんびり見ているのでしょうか。あなたの能力は彼らうより弱いですか。もちろんそんなことはないです。では、なぜ他の人が簡単にBCP-811試験に合格することができるかを知りたいですか。それは彼らがJPexam のBCP-811問題集を利用したからです。この問題集を勉強することだけで楽に試験に合格することができます。信じないのですか。不思議を思っていますか。では、急いで試してください。まず問題集のdemoを体験することができます。そうすれば、この問題集の品質を確認することができます。はやくJPexamのサイトをクリックしてください。
もしBCP-811認定試験を受験したいなら、BCP-811試験参考書が必要でしょう。ターゲットがなくてあちこち参考資料を探すのをやめてください。どんな資料を利用すべきなのかがわからないとしたら、JPexamのBCP-811問題集を利用してみましょう。この問題集は的中率が高くて、あなたの一発成功を保証できますから。ほかの試験参考書より、この問題集はもっと正確に実際問題の範囲を絞ることができます。こうすれば、この問題集を利用して、あなたは勉強の効率を向上させ、十分にBCP-811試験に準備することができます。
購入前にお試し,私たちの試験の質問と回答のいずれかの無料サンプルをダウンロード：http://www.jpexam.com/BCP-811_exam.html
NO.1 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
BlackBerry練習問題 BCP-811 BCP-811 BCP-811練習問題 BCP-811
NO.2 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
BlackBerry問題集 BCP-811参考書 BCP-811
NO.3 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
BlackBerry BCP-811練習問題 BCP-811 BCP-811 BCP-811
NO.4 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
BlackBerry認定証 BCP-811認定証 BCP-811問題集 BCP-811 BCP-811 BCP-811
NO.5 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
BlackBerry BCP-811 BCP-811 BCP-811認定試験
NO.6 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
BlackBerry認定試験 BCP-811 BCP-811認定資格
NO.7 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
BlackBerry BCP-811 BCP-811参考書
NO.8 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
BlackBerry BCP-811過去問 BCP-811 BCP-811参考書 BCP-811認定証
NO.9 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
BlackBerry BCP-811認証試験 BCP-811 BCP-811問題集 BCP-811過去問
NO.10 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
BlackBerry BCP-811参考書 BCP-811 BCP-811
NO.11 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
BlackBerry認定証 BCP-811 BCP-811
NO.12 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
BlackBerry BCP-811 BCP-811過去問
NO.13 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
BlackBerry認定証 BCP-811 BCP-811過去問 BCP-811 BCP-811 BCP-811
NO.14 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
BlackBerry参考書 BCP-811認定資格 BCP-811認定試験 BCP-811認定証
NO.15 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
BlackBerry問題集 BCP-811参考書 BCP-811問題集
NO.16 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
BlackBerry過去問 BCP-811認定資格 BCP-811 BCP-811参考書
NO.17 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
BlackBerry BCP-811 BCP-811参考書 BCP-811 BCP-811過去問 BCP-811
NO.18 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
BlackBerry BCP-811 BCP-811 BCP-811認定資格
NO.19 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
BlackBerry BCP-811練習問題 BCP-811過去問 BCP-811認定試験 BCP-811過去問
NO.20 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
BlackBerry過去問 BCP-811問題集 BCP-811 BCP-811
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