SALESFORCE-PD1 Practice Test 4 — 10 Questions

Question 1

A developer needs to execute initialization logic as soon as a Lightning Web Component is inserted into the DOM. Which lifecycle hook should be used?

Accepted Answer

connectedCallback(). connectedCallback() is invoked when a component is inserted into the DOM, making it the standard hook for initialization logic.

Answer

renderedCallback()

Answer

disconnectedCallback()

Answer

constructor()

Question 2

Which THREE things can a developer do with the Salesforce CLI?

Accepted Answer

Query data from an org.. Option B is correct because the Salesforce CLI provides the `sf data query` (formerly `sfdx force:data:soql:query`) command, which lets a developer run SOQL queries against an org and retrieve records. Option D is correct because the CLI includes the `sf org create scratch` (formerly `sfdx force:org:create`) command, which provisions scratch orgs from a Dev Hub using a definition file or flags. Option E is correct because the CLI supports metadata deployment via `sf project deploy start` (formerly `sfdx force:source:deploy` or `force:mdapi:deploy`), pushing source or metadata components to an org. Option A is not valid because license type is an org-level setting managed through the Company Information page in Setup or via the appropriate licensing/contract process, not through the Salesforce CLI. Option C is not valid because user password resets are performed in Setup (Users) or via the System Administrator profile's reset action, not through a standard Salesforce CLI command.

Answer

Modify the Org's license type.

Answer

Update user passwords.

Question 3

Which of these is NOT a valid testing best practice?

Accepted Answer

Hard-coding record IDs.. Hard-coding data is a bad practice.

Answer

Testing for bulk records.

Answer

Using System.assertEquals.

Answer

Using @isTest.

Question 4

A developer is using 'Test.isRunningTest()' in their production code. Why is this generally considered a poor practice?

Accepted Answer

It creates different code execution paths between test and production. While sometimes necessary, relying on it can lead to code paths that are not tested in production exactly as they execute in tests.

Answer

It causes the test to fail

Answer

It causes excessive governor limit usage

Answer

It is not supported in production

Question 5

What is the primary benefit of using a Sandbox for development?

Accepted Answer

It allows development without affecting production data.. Sandboxes provide an isolated environment to prevent impact on production data or processes.

Answer

It allows access to the full production database automatically.

Answer

It increases the number of available governor limits.

Answer

It automatically deploys code to production.

Question 6

A developer is troubleshooting an Apex trigger recursion issue where an update operation triggers itself infinitely. Which THREE strategies can the developer use to safely prevent this recursion? Choose 3 options.

Accepted Answer

Utilize Custom Settings or Custom Metadata to provide a global toggle to turn off triggers dynamically.. Option B is correct because Custom Settings or Custom Metadata can store a global bypass flag that the trigger checks before executing, allowing developers to disable trigger logic dynamically without deploying code changes, which safely breaks recursive update loops. Option D is correct because comparing Trigger.oldMap and Trigger.newMap lets the trigger verify that the fields it cares about actually changed before performing DML, so an update that does not modify relevant fields will not re-fire the same logic and cause infinite recursion. Option E is correct because a static Boolean variable in a helper class persists for the duration of a single transaction, so setting it to false after the first execution prevents the trigger from running its logic again during the same transaction's recursive DML. Option A is not appropriate because Limits.getQueries() only reports the number of SOQL queries already issued and aborting near governor limits does not logically prevent recursion. Option C is not appropriate because recursion is not an exception that can be caught; wrapping DML in try-catch does not stop the trigger from re-invoking itself.

Answer

Call Limits.getQueries() at the start of every trigger to abort if limits are near.

Answer

Wrap all DML statements in a try-catch block that catches recursion exceptions.

Question 7

A developer needs to verify code coverage across an entire Apex organization before deploying code to production. What is the minimum overall Apex code coverage required by Salesforce for production deployment?

Accepted Answer

75%. Salesforce requires a minimum of 75% overall Apex code coverage for deployment to a production organization.

Answer

100%

Answer

50%

Answer

85%

Question 8

Which TWO tools or environments are officially supported for developing Lightning Web Components? (Choose TWO)

Accepted Answer

Visual Studio Code with the Salesforce Extension Pack. Option B is correct because Salesforce officially supports developing Lightning Web Components in Visual Studio Code using the Salesforce Extension Pack, which provides LWC-specific tooling such as syntax highlighting, code completion, and the ability to deploy and retrieve components to and from an org. Option D is correct because the Salesforce CLI (sfdx/sf) is the officially supported command-line environment for scaffolding, building, testing, and deploying LWC source, and it underpins the VS Code extensions and CI/CD workflows. The remaining options do not belong: Microsoft FrontPage 2003 (A), Eclipse with the legacy Force.com IDE v1 plugin (C), and Dreamweaver MX with custom snippets (E) are obsolete or unrelated web-authoring tools that have no official Salesforce support for LWC development.

Answer

Microsoft FrontPage 2003

Answer

Eclipse IDE with the Force.com IDE v1 plugin

Answer

Dreamweaver MX with custom snippet extensions

Question 9

A developer needs to catch unhandled JavaScript errors in a Lightning Web Component hierarchy so the entire app doesn't crash. Which lifecycle hook handles errors thrown by descendant components?

Accepted Answer

errorCallback. errorCallback() is invoked when a descendant component throws an error in any of its lifecycle hooks or event handlers.

Answer

catchCallback

Answer

disconnectedCallback

Answer

faultCallback

Question 10

During the Salesforce order of execution, when are validation rules evaluated relative to before triggers?

Accepted Answer

Validation rules are evaluated after all before triggers have completed execution.. Validation rules execute after the 'before' triggers have completed and modified the records, ensuring that the validated state reflects any programmatic field updates.

Answer

Validation rules execute only after after triggers complete successfully.

Answer

Validation rules are evaluated concurrently with before triggers.

Answer

Validation rules are evaluated before any before triggers execute.