Salesforce DEX-450 Practice Exam - 239 Unique Questions
Latest Questions DEX-450 Guide to Prepare Free Practice Tests
Salesforce DEX-450 exam is a challenging certification that tests a developer's knowledge and skills in programmatic development using Apex and Visualforce in the Lightning Experience. Passing DEX-450 exam validates a developer's expertise in designing and building custom applications, integrations, and automation solutions on the Salesforce platform. Programmatic Development using Apex and Visualforce in Lightning Experience certification is highly regarded in the Salesforce community and can help developers advance their careers in this field.
The DEX-450 exam covers various topics such as Apex programming concepts, Visualforce markup language, Lightning components, debugging and testing, and deployment. DEX-450 exam consists of 60 multiple-choice questions, and candidates are given 105 minutes to complete it. It is important to note that the DEX-450 exam is one of the prerequisites for the Salesforce Certified Platform Developer II certification. Programmatic Development using Apex and Visualforce in Lightning Experience certification is highly valued in the industry, as it is a testament to the candidate's ability to design and develop complex applications on the Salesforce platform.
The DEX-450 certification exam is a challenging exam that requires a thorough understanding of programmatic development concepts and principles. Candidates must be able to demonstrate their ability to write efficient code, develop custom applications, and troubleshoot issues in a timely and effective manner. Programmatic Development using Apex and Visualforce in Lightning Experience certification exam is designed to test candidates on their ability to apply their knowledge to real-world scenarios, ensuring that certified developers are well-equipped to design and develop custom applications on the Salesforce platform.
NEW QUESTION # 34
A developer has the following requirements:
* Calculate the total amount on an Order.
* Calculate the line amount for each Line Item based on quantity selected and price.
* Move Line Items to a different Order if a Line Item is not in stock.
Which relationship implementation supports these requirements on its own7
- A. Line Item has a re-parentable master-detail field to Order.
- B. Order has a re-parentable lookup field to Line Item.
- C. Order has a re-parentable master-detail field to Line Item.
- D. Line Item has a re-parentable lookup field to Order.
Answer: A
NEW QUESTION # 35
Cloud Kicks Fitness, an ISV Salesforce partner, is developing a managed package application. One of the application modules allows the user to calculate body fat using the apex class, Bodyfat, and its method, calculateBodyfat(). The product owner wants to ensure this method is accessible by the consumer of the application when developing customizer outside the ISV's package namespace. Which approach should a developer take to ensure calculateBodyFat() is accessible outside the package namespace?
- A. Declare the class and method using the public access modifier.
- B. Declare the class as public and use the global access modifier on the method.
- C. Declare the class as public and use the public access modifier on the method.
- D. Declare the class and method using the global access modifier.
Answer: D
NEW QUESTION # 36
Given the following Anonymous Block:
Which one do you like?
What should a developer consider for an environment that has over 10,000 Case records?
- A. The try/catch block will handle any DML exceptions thrown.
- B. The transaction will fail due to exceeding the governor limit.
- C. The transaction will succeed and changes will be committed.
- D. The try/catch block will handle exceptions thrown by governor limits.
Answer: B
NEW QUESTION # 37
A developer needs to provide a Visualforce page that lets users enter Product-specific details during a Sales cycle. How can this be accomplished? (Choose 2)
- A. Download a Managed Package from the AppExhange that provides a custom Visualforce page to modify.
- B. Create a new Visualforce page and an Apex controller to provide Product data entry.
- C. Download an Unmanaged Package from the AppExchange that provides a custom Visualforce page to modify.
- D. Copy the standard page and then make a new Visualforce page for Product data entry.
Answer: B,C
NEW QUESTION # 38
What are two considerations for running a flow in debug mode?
Choose 2 answers
- A. Clicking Pause or executing a Pause element closes the flow and ends debugging.
- B. DML operations will be rolled back when the debugging ends.
- C. Input variables of type record cannot be passed into the flow,
- D. Callouts to external systems are not executed when debugging a flow.
Answer: A,C
NEW QUESTION # 39
Which two are best practices when it comes to component and application event handling? (Choose two.)
- A. Try to use application events as opposed to component events.
- B. Reuse the event logic in a component bundle, by putting the logic in the helper.
- C. Use component events to communicate actions that should be handled at the application level.
- D. Handle low-level events in the event handler and re-fire them as higher-level events.
Answer: B,D
NEW QUESTION # 40
Opportunity opp=[select id ,stagename from opportunity limit 1] Given the code above, how can a developer get the label for the stagename field?
- A. Call"opportunity.stagename.getdescribe().getlabel()"
- B. Call"opp.stagename.getdescribe().getlabel()"
- C. Call "opportunity.stagename.label"
- D. Call"opp.stagename.label"
Answer: A
NEW QUESTION # 41
A developer creates a custom exception as shown below:
What are two ways the developer can fire the exception in Apex? Choose 2 answers
- A. New ParityException (parity does not match);
- B. Throw new ParityException (parity does not match);
- C. Throw new parityException ( );
- D. New ParityException( );
Answer: B,C
NEW QUESTION # 42
Which exception type cannot be caught?
- A. LimitException
- B. CalloutException
- C. Custom Exception
- D. NoAccessException
Answer: A
NEW QUESTION # 43
Which annotation exposes an Apex class as a RESTful web service?
- A. Remote Action
- B. AuraEnabled
- C. RestResource
- D. Httplnvocable
Answer: B
NEW QUESTION # 44
What are three ways for a developer to execute tests in an org? Choose 3.
- A. Metadata API.
- B. Salesforce DX
- C. Tooling API
- D. Bulk API
- E. Setup Menu
Answer: B,C,E
Explanation:
https://developer.salesforce.com/docs/atlas.en-us.sfdx_dev.meta/sfdx_dev/sfdx_dev_testing.htm https://developer.salesforce.com/docs/atlas.en-us.api_tooling.meta/api_tooling/tooling_api_objects_apextestsuite.htm
NEW QUESTION # 45
A sales manager wants to make sure that whenever an opportunity stage is changed to 'Closed Won', a new case will be of created for the support team to collect necessary information from the customer. How should a developer accomplish this?
- A. Set up a validation rule on the Opportunity Stage.
- B. Create a Process Builder to create the new case.
- C. Create a workflow rule to create the new case.
- D. Create a lookup field to the Case object on the opportunity object.
Answer: B
NEW QUESTION # 46
A developer is implementing an Apex class for a financial system. Within the class, the variables 'creditAmount' and 'debtAmount' should not be able to change once a value is assigned. In which two ways can the developer declare the variables to ensure their value can only be assigned one time? Choose 2 answers
- A. Use the final keyword and assign its value when declaring the variable.
- B. Use the static keyword and assign its value in a static initializer.
- C. Use the final keyword and assign its value in the class constructor.
- D. Use the static keyword and assign its value in the class constructor.
Answer: A,C
NEW QUESTION # 47
A developer has javascript code that needs to be called by controller functions in multiple components by extending a new abstract component. Which resource in the abstract component bundle allows the developer to achieve this
- A. Controller.js
- B. Rendered.js
- C. Helper.js
- D. Superrender.js
Answer: C
NEW QUESTION # 48
What is a valid Apex statement?
- A. Private static constant Double rate = 775;
- B. Map conMap = (SELECT Name FROM Contact);
- C. Integer w, x, y = 123, z = 'abc',
- D. Account[] acctList = new List{new Account()}
Answer: D
NEW QUESTION # 49
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