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NEW QUESTION # 52
A developer has a Apex controller for a Visualforce page that takes an ID as a URL parameter. How should the developer prevent a cross site scripting vulnerability?
- A. String.escapeSingleQuotes(ApexPages.currentPage() .getParameters(). get('url_param'))
- B. String.ValueOf(ApexPages.currentPage() .getParameters() .get('url_param'))
- C. ApexPages.currentPage() .getParameters() .get('url_param') .escapeHtml4()
- D. ApexPages.currentPage() .getParameters() .get('url_param')
Answer: B
Explanation:
Cross site scripting (XSS) is a vulnerability that occurs when an attacker can insert unauthorized HTML or JavaScript code into a web page viewed by other users. This can lead to hijacking the user's session, stealing confidential information, or defacing the page. To prevent XSS, the developer should always validate and encode any user-supplied data before displaying it on the page. The ApexPages.currentPage() .getParameters()
.get('url_param') method returns the value of the URL parameter as a string, but does not perform any validation or encoding. Therefore, it is vulnerable to XSS if the parameter contains malicious code. The ApexPages.currentPage() .getParameters() .get('url_param') .escapeHtml4() method escapes the HTML characters in the parameter value, such as <, >, &, and ", but does not prevent JavaScript code from being executed. Therefore, it is also vulnerable to XSS if the parameter contains a script tag or an event handler attribute. The String.escapeSingleQuotes(ApexPages.currentPage() .getParameters(). get('url_param')) method escapes the single quotes in the parameter value, but does not affect any other characters. Therefore, it is also vulnerable to XSS if the parameter contains any HTML or JavaScript code. The String.ValueOf(ApexPages.currentPage() .getParameters() .get('url_param')) method converts the parameter value to a string and encodes any HTML characters as HTML entities, such as <, >, &, and ". This prevents any HTML or JavaScript code from being rendered or executed on the page. Therefore, it is the best option to prevent XSS. References: You can learn more about XSS and how to prevent it in Apex from the following sources:
* Cross Site Scripting (XSS) | Apex Developer Guide
* Secure Coding Cross Site Scripting | Secure Coding Guide
* Cross-Site Scripting in Apex | SecureFlag Security Knowledge Base
NEW QUESTION # 53
Which statement describes the execution order when triggers are associated to the same object and event?
- A. Triggers are executed in the order they are modified.
- B. Triggers are executed in the order they are created.
- C. Triggers are executed alphabetically by trigger name.
- D. Trigger execution order cannot be guaranteed.
Answer: D
Explanation:
When multiple triggers are associated with the same object and event, Salesforce does not guarantee the order in which they will execute.
Option D: Trigger execution order cannot be guaranteed.
Correct Answer.
Salesforce does not provide a mechanism to define or guarantee the execution order of triggers on the same object and event.
If order is important, developers should combine the logic into a single trigger or use trigger frameworks that manage execution order.
Reference:
Apex Triggers
Best Practices for Triggers
Incorrect Options:
Option A: Triggers are executed in the order they are modified.
Incorrect.
Option B: Triggers are executed alphabetically by trigger name.
Incorrect.
Option C: Triggers are executed in the order they are created.
Incorrect.
Conclusion:
The execution order of triggers on the same object and event cannot be guaranteed by Salesforce.
NEW QUESTION # 54
A developer needs to implement a custom SOAP Web Service that is used by an external Web Application. The developer chooses to Include helper methods that are not used by the Web Application In the Implementation of the Web Service Class.
Which code segment shows the correct declaration of the class and methods?
- A.
- B.
- C.
- D.
Answer: B
NEW QUESTION # 55
An org has an existing flow that edits an Opportunity with an Update Records element. A developer must update the flow to also create a Contact and store the created Contact's ID on the Opportunity.
Which update must the developer make in the flow?
- A. Add a new Roll Back Records element.
- B. Add a new Update Records element.
- C. Add a new Get Records element.
- D. Add a new Create Records element.
Answer: D
Explanation:
To update the flow to create a Contact and store the Contact's ID on the Opportunity:
Option D: Add a new Create Records element.
Steps:
Add Create Records Element: Configure it to create a Contact and store the newly created Contact's ID in a variable.
Update Opportunity: Use the existing Update Records element or add a new one to update the Opportunity with the Contact's ID.
Reference:
"Use the Create Records element to create records in your flow."
- Salesforce Help: Create Records Element
Why Other Options Are Incorrect:
Option A: An Update Records element cannot create a new Contact.
Option B: A Get Records element retrieves existing records but does not create new ones.
Option C: Roll Back Records is used to undo record changes in the flow transaction.
NEW QUESTION # 56
Which two are true regarding a Dyno? Choose 2 answers
- A. Has the ability to sleep as a standard and performance Dyno
- B. Is a lightweight Linux container used in a collection to run Heroku applications
- C. Is a light weight VM used to run code on the Heroku Platform
- D. Has Ephemeral filesystems and is rebooted every 24 hours.
Answer: B,D
NEW QUESTION # 57
Universal Container* decides to use purely declarative development to build out a new Salesforce application.
Which two options can be used to build out the business logic layer for this application?
Choose 2 answer
- A. Batch Jobs
- B. Validation Rules
- C. Remote Actions
- D. Record- Triggered flow
Answer: B,D
Explanation:
* Validation Rules. This is true because validation rules are a declarative way of enforcing data quality and business logic on the Salesforce objects. Validation rules can prevent users from saving records that do not meet certain criteria, such as required fields, unique values, or custom formulas1.
* Record-Triggered Flow. This is true because record-triggered flows are a declarative way of automating business processes and logic on the Salesforce objects. Record-triggered flows can perform actions such as creating, updating, or deleting records, sending emails, or calling Apex classes when a record is created, updated, or deleted2.
* Remote Actions. This is false because remote actions are a programmatic way of invoking Apex methods from Visualforce pages or Lightning components. Remote actions require writing Apex code and using the @RemoteAction annotation to expose the methods to the client-side3.
* Batch Jobs. This is false because batch jobs are a programmatic way of processing large sets of data or records in batches using Apex. Batch jobs require writing Apex code and implementing the
* Database.Batchable interface to define the start, execute, and finish methods of the job.
References:
* 1: Validation Rules
* 2: Record-Triggered Flows
* 3: Remote Actions
* : Batch Jobs
NEW QUESTION # 58
Consider the following code snippet for a Visualforce page that is launched using a Custom Button on the Account detail page layout.
When the Save button is pressed the developer must perform a complex validation that involves multiple objects and, upon success, redirect the user to another Visualforce page.
What can the developer use to meet this business requirement?
- A. Validation rule
- B. Apex trigger
- C. Controller extension
- D. Custom controller
Answer: C
NEW QUESTION # 59
A developer creates a custom controller and custom Visualforce page by using the code block below.
What can the user expect to see when accessing the custom page?
- A. a, a, a
- B. a, b, getMyString
- C. b, a, getMyString
- D. a, b, b
Answer: A
NEW QUESTION # 60
What Is the result of the following code snippet?
- A. 200 Accounts are inserted,
- B. Account is inserted.
- C. Accounts are inserted.
- D. 201 Accounts are inserted.
Answer: C
NEW QUESTION # 61
For which three items can a trace flag be configured? (Choose three.)
- A. Apex Class
- B. User
- C. Visualforce
- D. Apex Trigger
- E. Process Builder
Answer: A,B,D
NEW QUESTION # 62
Universal Containers needs to create a custom user interface component that allows users to enter information about their accounts.
The component should be able to validate the user input before saving the information to the database.
What is the best technology to create this component?
- A. Flow
- B. Visualforce
- C. VUE JavaScript framework
- D. Lightning Web Components
Answer: D
Explanation:
The best technology to create a custom user interface component that allows users to enter and validate information about their accounts is Lightning Web Components. Lightning Web Components are reusable HTML elements that use modern JavaScript and web standards to create fast and efficient user interfaces on the Lightning Platform. Lightning Web Components can leverage the Lightning Data Service to access and manipulate Salesforce data, and use the Lightning Design System to ensure a consistent look and feel.
Lightning Web Components can also use Apex methods, wire adapters, and wire functions to perform complex logic and validations on the user input before saving it to the database. Flow is a declarative tool that allows users to automate business processes and guide users through screens, but it is not a technology to create custom user interface components. Visualforce is a framework that allows developers to create custom web pages and components using a tag-based markup language and Apex controllers, but it is not as fast, efficient, or modern as Lightning Web Components. VUE JavaScript framework is an external framework that can be used to create reactive user interfaces, but it is not a native Salesforce technology and it requires additional configuration and integration to work with Salesforce data and services. References:
* Lightning Web Components (Salesforce Developer Documentation)
* Build Lightning Web Components (Trailhead Trail)
* Flow Basics (Trailhead Module)
* Visualforce Basics (Trailhead Module)
* VUE JavaScript Framework (Official Website)
NEW QUESTION # 63
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: true, composed: true
- B. bubbles: false, composed: false
- C. bubbles: true, composed: false
- D. bubbles: false, composed: true
Answer: A
NEW QUESTION # 64
When a user edits the Postal Code on an Account, a custom Account text field named ''Timezone'' must be updated based on the values in a postalCodeToTimezone_c custom object.
What should be built to implement this feature?
- A. Account custom trigger
- B. Account assignment rule
- C. Account approval process
- D. Account workflow rule
Answer: A
NEW QUESTION # 65
A developer is asked to write helper methods that create test data for unit tests.
What should be changed in the TestUtils class so that its methods are only usable by unit test methods?
- A. Add @IsTest above line 03.
- B. Remove static from line 03.
- C. Add @1sTest above line 01.
- D. Change public to private on line 01.
Answer: A
NEW QUESTION # 66
In an organization that has enabled multiple currencies, a developer needs to aggregate the sum of the Estimated_value__c currency field from the CampaignMember object using a roll-up summary field called Total_estimated_value__c on Campaign.
- A. The values in CampaignMember.Estimated_value__c are summed up and the resulting Total_estimated_value__c field is displayed as a numeric field on the Campaign record.
- B. The values in Campaignmember.Estimated_value__c are converted into the currency of the Campaign record and the sum is displayed using the currency on the Campaign record.
- C. The values In CampaignMember.Estimated_value__c are converted into the currency of the current user, and the sum is displayed using the currency on the Campaign record.
- D. The values in CampaignMember.Estimated_value__c are converted into the currency on the majority of the CampaignMember records and the sum is displayed using that currency.
Answer: B
NEW QUESTION # 67
A lead object has a custom field Prior_Email__c. The following trigger is intended to copy the currentEmail into the Prior_Email__c field any time the Email field is changed:
Which type of exception will this trigger cause?
- A. A null reference exception
- B. A compile time exception
- C. A limit exception when doing a bulk update
- D. A DML exception
Answer: D
NEW QUESTION # 68
Which three resources in an Azure Component can contain JavaScript functions?
- A. Renderer
- B. Design
- C. Style
- D. helper
- E. Controllers
Answer: A,D,E
NEW QUESTION # 69
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Salesforce CRT-450 exam is designed to test the skills and knowledge of individuals who want to become Salesforce Certified Platform Developer I. Salesforce Certified Platform Developer I certification is essential for those seeking a career in Salesforce development and indicates that they have the necessary expertise to develop custom applications and solutions on the Salesforce platform. CRT-450 exam comprises multiple-choice questions and focuses on various topics such as Apex programming, Visualforce development, integration, and testing.
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