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An environment has two Apex Triggers: an after-update trigger on Account and an after-update trigger on Contact. The Account after-update trigger fires whenever an Account’s address is updated, and it updates every associated Contact with that address. The Contact after-update trigger fires on every edit, and it updates every Campaign Member record related to the Contact with the Contact’s state.

Consider the following: A mass update of 200 Account records’ addresses, where each Account has 50 Contacts. Each Contact has 1 Campaign Member. This means there are 10,000 Contact records across the Accounts and 10,000 Campaign Member records across the contacts.

What will happen when the mass update occurs?

A. The mass update will fail, since the two triggers fire in the same context, thus exceeding the number of records processed by DML statements.

B. There will be no error, since each trigger fires within its own context and each trigger does not exceed the limit of the number of records processed by DML statements.

C. There will be no error, since the limit on the number of records processed by DML statements is 50,000.

D. The mass update of Account address will succeed, but the Contact address updates will fail due to exceeding number of records processed by DML statements.

Answer: B

What is a benefit of JavaScript remoting over Visualforce Remote Objects?

A. Allows for specified re-render targets

B. Does not require any Apex code

C. Does not require any JavaScript code

D. Supports complex server-side application logic

Answer: C

A developer wants to call an Apex Server-side Controller from a Lightning Aura Component.

What are two limitations to the data being returned by the Controller? (Choose two.)

A. A custom Apex Class can be returned, but only the values of public instance properties and methods annotated with @AuraEnabled are serialized and returned.

B. Lists of Custom Apex Classes cannot be returned by Apex Controllers called by Lightning Aura Components.

C. Basic data types are supported, but defaults, such as maximum size for a number, are defined by the objects that they map to.

D. Only Basic data types and sObjects are supported as return types for Apex Controllers called by Lightning Aura Components.

Answer: AC

A developer wishes to improve runtime performance of Apex calls by caching results on the client.

What is the best way to implement this?

A. Decorate the server-side method with @AuraEnabled(cacheable=true).

B. Set a cookie in the browser for use upon return to the page.

C. Call the setStorable() method on the action in the JavaScript client-side code.

D. Decorate the server-side method with @AuraEnabled(storable=true).

Answer: C

A company has a Lightning Page with many Lightning Components, some that cache reference data. It is reported that the page does not always show the most current reference data.

What can a developer use to analyze and diagnose the problem in the Lightning Page?

A. Salesforce Lightning Inspector Actions Tab

B. Salesforce Lightning Inspector Event Log Tab

C. Salesforce Lightning Inspector Transactions Tab

D. Salesforce Lightning Inspector Storage Tab

Answer: D

A Lightning Component functions in preview mode and needs to be used inside a Lightning App Builder page, but it is not available.

What change should be applied to the component?

A. Expose it in the markup using the implements and access attributes.

B. Delete the component, metadata, and Apex controller and recreate them.

C. Refresh the sandbox and upgrade it to the latest API version.

D. Look for errors in the logic in the JavaScript controller.

Answer: A

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Salesforce Platform Developer II Exam PDII Study Guide | Killtest 2020