Plat-Dev-301模試エンジン & Plat-Dev-301資格勉強Plat-Dev-301試験問題のヒット率は非常に高く、もちろん合格率も非常に高くなります。製品を選択する前に、独自の合格率を比較しておく必要があります。 Plat-Dev-301学習資料は、リストの一番上に表示される必要があります。また、Plat-Dev-301学習クイズの合格率は99％です。これは私たちの努力の結果であり、ユーザーへの最高の贈り物です。私たちのPlat-Dev-301学習教材は非常に高い合格率を持つことができ、すべてのメンバーが最初に顧客の概念を支持するのは段階的な結果です。 Plat-Dev-301トレーニング準備の試用版を使用する場合は、購入することをお勧めします！ Salesforce Certified Platform Developer II - Multiple Choice 認定 Plat-Dev-301 試験問題 (Q54-Q59):質問 # 54
A company has an Apex process that makes multiple extensive database operations and web service callouts. The database processes and web services can take a long time to run and must be run sequentially.
How should the developer write this Apex code without running into governor limits and system limitations?
A. Use Limits class to stop entire process once governor limits are reached.
B. Use Queueable Apex to chain the jobs to run sequentially.
C. Use Apex Scheduler to schedule each process.
D. Use multiple 3zutuze methods for each process and callout.
正解：B
解説：
Queueable Apex is suitable for complex processes that require chaining jobs to run sequentially. It can handle long-running processes without hitting governor limits, as each chained job runs in a new transaction with its own set of governor limits.
質問 # 55
A company has a custom component that allows users to search for records of a certain object type by invoking an Apex Controller that returns a list of results based on the user's input. When the search is completed, a searchComplete event is fired, with the results put in a results attribute of the event. The component is designed to be used within other components and may appear on a single page more than once.
What is the optimal code that should be added to fire the event when the search has completed?
A)
B)
C)
D)
A. Option D
B. Option C
C. Option B
D. Option A
正解：C
解説：
The correct code to fire the event when the search has completed in a Lightning component is option B. $A.get("e.c.searchComplete") is the syntax used to get the event, setParams is used to set the parameters, and fire is used to dispatch the event.
質問 # 56
A developer needs to send Account records to an external system for backup purposes. The process must take a snapshot of Accounts as they are saved and then make a callout to a RESTful web service. The web service can only receive, at most, one record per call.
What should a developer do to implement these requirements?
A. Implement platform events.
B. Implement the Queveable interface.
C. Create a future method.
D. Expose an Apex class as e web service.
正解：D
質問 # 57
Consider the controller code below that is called from an Aura component and returns data wrapped in a class.
The developer verified that the queries return a single record each and there is error handling in the Aura component, but the component is not getting anything back when calling the controller getSemeData. 'What is wrong?
A. The member's Name and option should not be declared public.
B. The member's Kame and option of the class MyDataWrapper should be annotated with @AuraEnabled also.
C. The member's Name and option should not have getter and setter.
D. Instances of Apex classes, such as MyDatsWrapper, cannot be returned to a Lightning component.
正解：B
解説：
For the data to be passed back to the Aura component, all properties of the Apex class that are intended to be accessed from the component need to be annotated with @AuraEnabled. Without this annotation, the Aura framework cannot serialize the properties to send them to the front end.
質問 # 58
Consider the Apex controller below, that is called from an Aura component.
What is wrong with this code?
A. Line 8: method must first serialize the list to JSON before returning
B. Line 6: method must be static
C. Line 1: class must be global8. Lines 1 and 6: class and method must be global
正解：A
解説：
The method defined in the Apex class must be static to be used as an Aura-enabled method. Aura-enabled methods need to be static because they are called by the Lightning framework without instantiating the class.
