[Apr 06, 2024] Get New CRT-450 Practice Test Questions Answers
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To prepare for the Salesforce CRT-450 certification exam, candidates can take the official Salesforce Certified Platform Developer I training course, which covers all the topics that are required to pass the exam. Additionally, there are many online resources available, such as practice exams, study guides, and online courses, that can help candidates prepare for the certification exam.
Salesforce CRT-450 certification exam is designed for professionals who are interested in building custom applications on the Salesforce platform. CRT-450 exam covers a wide range of topics, including the Salesforce development environment, data modeling and management, Apex programming language, Visualforce user interface framework, and testing and deployment. CRT-450 exam aims to test the candidates' understanding of the Salesforce development process and their ability to design, develop, test, and deploy custom applications.
NEW QUESTION # 125
Which Lightning Web Component custom event property settings enable the event to bubble up the containment hierarchy and cross the Shadow DOM boundary?
- A. bubbles: tnje, composed: false
- B. bubbles: false, composed: true
- C. bubbles: false, composed: false
- D. bubbles: true, composed: true
Answer: D
Explanation:
Lightning Web Components use the standard web component model, which includes the concept of Shadow DOM. Shadow DOM is a mechanism that isolates the component's internal DOM from the rest of the page, creating a boundary that prevents the component from accessing or being affected by the elements outside of its own subtree. However, this also means that events that are fired from within the component's shadow DOM do not propagate to the parent or ancestor components by default, unless they are configured to do so.
To configure how an event propagates, the component that dispatches the event can set two properties on the custom event object: bubbles and composed. The bubbles property determines whether the event can bubble up the containment hierarchy, which is the tree of components that contains the event source. The composed property determines whether the event can cross the shadow boundary, which is the boundary between the component's shadow DOM and the light DOM of its parent component.
The possible values and effects of these properties are:
* bubbles: true, composed: true: The event can bubble up the containment hierarchy and cross the shadow boundary. This means that the event can be handled by any component that is an ancestor of the event source, regardless of whether it is in the same shadow DOM or not. This is the most common setting for custom events that need to communicate with other components in the page.
* bubbles: true, composed: false: The event can bubble up the containment hierarchy, but cannot cross the shadow boundary. This means that the event can be handled by any component that is an ancestor of the event source, as long as it is in the same shadow DOM. This is useful for custom events that need to
* communicate with other components within the same shadow tree, but not outside of it.
* bubbles: false, composed: true: The event cannot bubble up the containment hierarchy, but can cross the shadow boundary. This means that the event can be handled only by the component that dispatched the event, or by the component that contains the event source in its light DOM. This is useful for custom events that need to communicate with the direct parent component, but not with any other ancestor components.
* bubbles: false, composed: false: The event cannot bubble up the containment hierarchy, nor can it cross the shadow boundary. This means that the event can be handled only by the component that dispatched the event. This is useful for custom events that do not need to communicate with any other components, but only with the event source itself.
Therefore, the correct answer is B. bubbles: true, composed: true, as this is the only setting that enables the event to bubble up the containment hierarchy and cross the shadow boundary.
References:
* Configure Event Propagation
* Handle Events
NEW QUESTION # 126
A company has a custom object, Sales, }_Help_Request__c, that has a Lookup relationship to Opportunity. The Seles Help Request__c has a mumber field, Number_ct_Hours__c, that represents the amount of time spent on the Sales_Help Request__C.
A developer is tasked with creating a field, total_Hour2__c, on Opportunity that should be the sum of all of the Number_of_Hours_c values for the Sales_Help_Request__c records related to that Opportunity.
What should the developer use to implement this?
- A. A roll-up summary field on the sales Help_Request__c object
- B. A record-triggered flow on the Sales Help Request__c object
- C. A roll-up summary field on the Opportunity object
- D. A trigger on the Opportunity object
Answer: D
NEW QUESTION # 127
What are three ways for a developer to execute tests in an org? Choose 3.
- A. ToolingAPI
- B. Developer Console
- C. Bulk API
- D. Setup Menu
- E. Metadata API
Answer: A,B,D
NEW QUESTION # 128
Which Salesforce feature allows a developer to see when a user last logged in to Salesforce if real-time notification is not required?
- A. Calendar Events
- B. Event Monitoring Log
- C. Developer Log
- D. Asynchronous Data Capture Events
Answer: B
NEW QUESTION # 129
A developer has two custom controller extensions where each has a save() method.
Which save() method will be called for the following Visualforce page?
<apex:page standardController ="Account", extensions="ExtensionA, ExtensionB">
<apex:commandButton action ="{!save}" value="Save"/>
</apex:page>
- A. ExtensionA save()
- B. Runtime error will be generated
- C. ExtensionB save()
- D. Standard controller save()
Answer: B
NEW QUESTION # 130
A company has a custom object named Region. Each Account in Salesforce can only be related to one Region at a time, but this relationship is optional.
Which type of relationship should a developer use to relate an Account to a Region?
- A. Hierarchical
- B. Lookup
- C. Master-Detail
- D. Parent-Child
Answer: B
NEW QUESTION # 131
What is a valid source and destination pair that can send or receive change sets? (Choose 2)
- A. Developer Edition to Sandbox
- B. Sandbox to Production
- C. Sandbox to Sandbox
- D. Developer Edition to Production
Answer: B,C
NEW QUESTION # 132
On which object can an administrator create a roll-up summary field?
- A. Any object that is on the child side of a lookup relationship.
- B. Any object that is on the master side of a master-detail relationship.
- C. Any object that is on the parent side of a lookup relationship.
- D. Any object that is on the detail side of a master-detail relationship.
Answer: B
NEW QUESTION # 133
A developer creates a new Apex trigger with a helper class, and writes a test class that only exercises 95% coverage of new Apex helper class. Change Set deployment to production fails with the test coverage warning: "Test coverage of selected Apex Trigger is 0%, at least 1% test coverage is required" What should the developer do to successfully deploy the new Apex trigger and helper class?
- A. Run the tests using the 'Run All Tests' method.
- B. Create a test class and methods to cover the Apex trigger
- C. Increase the test class coverage on the helper class
- D. Remove the falling test methods from the test class.
Answer: B
NEW QUESTION # 134
How many accounts will be inserted by the following block ofcode? for(Integer i = 0 ; i < 500; i++) { Account a = new Account(Name='New Account ' + i); insert a; }
- A. 0
- B. 1
- C. 2
- D. 3
Answer: A
NEW QUESTION # 135
A developer needs to update an unrelated object when a record gets saved.
Which two trigger types should the developer create? (Choose two.)
- A. after update
- B. after insert
- C. before insert
- D. before update
Answer: C,D
NEW QUESTION # 136
For which three items can 2 trace flag be configured?
Choose 3 answers
- A. Flow
- B. Apex Class
- C. Apex Trager
- D. Visualforce
- E. User
Answer: B,C,E
Explanation:
A trace flag is a special setting in Salesforce that captures detailed information about the execution of Apex code1. It records various events, such as the execution of Apex methods, SOQL queries, and DML operations, and writes them to a log file1. Trace flags can be configured for three types of entities: Apex classes, Apex triggers, and users2. For Apex classes and triggers, trace flags override the default logging levels and enable logging for the specified class or trigger2. For users, trace flags enable logging for all the Apex code executed by that user2. Trace flags can be set up using the Developer Console, the Tooling API, or Setup2. Flows and Visualforce pages are not valid entities for trace flags, as they are not Apex code34. References: 1 TraceFlag | Tooling API | Salesforce Developers1, 2 Debug Log Levels - Salesforce2, 3 Flow | Tooling API | Salesforce Developers3, 4 Visualforce | Tooling API | Salesforce Developers4
NEW QUESTION # 137
Which standard field needs to be populated when a developer inserts new Contact records programmatically?
- A. Accountld
- B. LastName
- C. Name
- D. FirstName
Answer: B
NEW QUESTION # 138
A lead object has a custom field Prior_Email__c. The following trigger is intended to copy the current Email into the Prior_Email__c field any time the Email field is changed:
Which type of exception will this trigger cause?
- A. A limit exception when doing a bulk update
- B. A null reference exception
- C. A DML exception
- D. A compile time exception
Answer: C
NEW QUESTION # 139
A software company uses the following objects and relationships:
* Case: to handle customer support issues
* Defect_c: a custom object to represent known issues with the company's software
* case_Defect__c: a junction object between Case and Defector to represent that a defect Is a customer issue What should be done to share a specific Case-Defect_c record with a user?
- A. Share the parent Case record.
- B. Share the Case_Defect_c record.
- C. Share the parent Case and Defect_c records.
- D. Share the parent Defect_c record.
Answer: C
NEW QUESTION # 140
A developer writes a trigger on the Account object on the before update event that increments a count field. A workflow rule also increments the count field every time that an Account is created or update.
The field update in the workflow rule is configured to not re-evaluate workflow rules. What is the value of the count field if an Account is inserted with an initial value of zero, assuming no other automation logic is implemented on the Account?
- A. 0
- B. 1
- C. 2
- D. 3
Answer: C
NEW QUESTION # 141
what are the methods used to show input in classic and lightning ?
- A. Use visualforce page in classic and lightning component in lightning
Answer: A
NEW QUESTION # 142
A Salesforce Administrator is creating a record-triggered flow. When certain criteria are met, the flow must call an Apex method to execute complex validation involving several types of objects.
When creating the Apex method, which annotation should a developer use to ensure the method Can be used within the flow?
- A. @future
- B. @AuraEnaled
- C. @RemoteAction
- D. @InvocableMethod
Answer: D
NEW QUESTION # 143
A developer wrote Apex code that calls out to an external system. How should a developer write the test to provide test coverage?
- A. Write a class that implements the HTTPCalloutMock interface.
- B. Write a class that extends WebserviceMock
- C. Write a class that extends HTTPCalloutMock.
- D. Write a class that implements the WebserviceMock interface.
Answer: A
NEW QUESTION # 144
Which three code lines are required to create a Lightning component on a Visualforce page? (Choose three.)
- A. <apex:slds/>
- B. $Lightning.useComponent
- C. $Lightning.use
- D. $Lightning.createComponent
- E. <apex:includeLightning/>
Answer: C,D,E
NEW QUESTION # 145
A developer is writing tests for a class and needs to insert records to validate functionality.
Which annotation method should be used to create record for every method in the test class?
- A. @isTest (SeeAllData-true)
- B. @FreTest
- C. @TestSetup
- D. @StartTest
Answer: C
NEW QUESTION # 146
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