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[Hardware] CRT-450 Exam Exercise - CRT-450 Braindumps Pdf

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【Hardware】 CRT-450 Exam Exercise - CRT-450 Braindumps Pdf

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Salesforce Certified Platform Developer I Sample Questions (Q230-Q235):NEW QUESTION # 230
A Developer Edition org has five existing accounts. A developer wants to add 10 more accounts for testing purposes.
The following code is executed in the Developer Console using the Execute Anonymous window:

How many total accounts will be in the org after this code is executed?
  • A. 0
  • B. 1
  • C. 2
  • D. 3
Answer: C
Explanation:
The code snippet provided in the image is a Salesforce Apex code that is used to create new accounts in a Salesforce org. Initially, there are five existing accounts. In the provided Apex code, one account named
'MyAccount' is created and inserted into the org, making the total six accounts. Then, a loop is executed to create and add ten more new accounts (named 'New Account 1' to 'New Account 10') into the org using a do-while loop that runs while x is less than 10 (starting from x=1). So, after executing this code, there will be an additional eleven accounts added to the initial five accounts making it a total of fifteen (5 initial + 11 new =
16) accounts in the org. References: The explanation can be corroborated with knowledge of Apex programming on Salesforce's official learning platform Trailhead and related documentation.
* [Apex Basics for Admins]
* [Apex Developer Guide]
* [Developer Console]

NEW QUESTION # 231
Universal Containers (UC) decided it will not send emails to support personnel directly from Salesforce in the event that an unhandled exception occurs. Instead, UC wants an external system be notified of the error.
What is the appropriate publish/subscribe logic to meet these requirements?
  • A. Publish the error event using the addError()method and write a trigger to subscribe to the event and notify the external system.
  • B. Publish the error event using the Eventbus.publish()method and have the external system subscribe to the event using CometD.
  • C. Publish the error event using the addError()method and have the external system subscribe to the event using CometD.
  • D. Have the external system subscribe to the BatchApexErrorevent, no publishing is necessary.
Answer: B

NEW QUESTION # 232
A candidate may apply to multiple jobs at the company Universal Containers by submtting a single application per job posting. Once an application is submitted for a job posting, that application cannot be modified to be resubmitted to a different job posting.What can the administrator do to associate an application with each job posting in the schema for the organization?
  • A. Create a master-detail relationship in the Job Postings custom object to the Applications custom object.
  • B. Create a lookup relationship in the Applications custom object to the Job Postings custom object
  • C. Create a lookup relationship on both objects to a junction object called Job Posting Applications.
  • D. Create a master-detail relationship in the Application custom object to the Job Postings custom object.
Answer: A

NEW QUESTION # 233
Which two are best practices when it comes to component and application event handling? (Choose two.)
  • A. Handle low-level events in the event handler and re-fire them as higher-level events.
  • B. Reuse the event logic in a component bundle, by putting the logic in the helper.
  • C. Try to use application events as opposed to component events.
  • D. Use component events to communicate actions that should be handled at the application level.
Answer: A,B
Explanation:
Component and application events are two types of events that can be used to communicate between components in Lightning. Component events are handled by the component that fired the event or a component in its containment hierarchy. Application events are handled by any component that is listening to the event, regardless of where it is in the DOM1. Some of the best practices when it comes to component and application event handling are:
* Reuse the event logic in a component bundle, by putting the logic in the helper. This practice allows the developer to avoid duplicating code and to maintain consistency and modularity. The helper class can contain common methods that can be invoked by the controller or the renderer of the component2.
* Handle low-level events in the event handler and re-fire them as higher-level events. This practice allows the developer to abstract away the details of the low-level events and provide a more meaningful and relevant event for the consumers. For example, a component can handle a mouse click event and re-fire it as a select event with additional data3.
The other options are not best practices because:
* Use component events to communicate actions that should be handled at the application level. This practice is not recommended, because component events are scoped to the component that fired them or its parents. If the action should be handled by a component that is not in the same containment hierarchy, the component event will not reach it. Application events are more suitable for cross-component communication1.
* Try to use application events as opposed to component events. This practice is not advisable, because application events are broadcast to all components that are listening to them, which can cause performance issues and unwanted side effects. Component events are more efficient and secure, as they are only handled by the relevant components1.
References:
* : Communicating with Events
* : Helper Functions
* : Advanced Events Example

NEW QUESTION # 234
A developer can use the debug log to see which three types of information? (Choose three.)
  • A. HTTP callouts to external systems
  • B. User login events
  • C. Actions triggered by time-based workflow
  • D. Resource usage and limits
  • E. Database changes
Answer: A,C,E

NEW QUESTION # 235
......
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