PD2 practice questions 271–279

1. Question 271 · 279 in bank

   Select 3

   Which API can be used to execute unit tests? (Choose three.)

   • AStreaming API
   • BTest API
   • CTooling API
   • DSOAP API
   • EMetadata API

   Show answer

   Answer: CDE

   Explanation

   Found the below two points in the Apex Developer Guide (https://developer.salesforce.com/docs/atlas.en-us.apexcode.meta/apexcode/apex_testing_unit_tests_running.htm): 1. You can use the runTests() call from the SOAP API to run tests synchronously. 2. You can also run tests using the Tooling REST API. Use the /runTestsAsynchronous/ and /runTestsSynchronous/ endpoints to run tests asynchronously or synchronously. So the answer to the question should be Tooling API, SOAP API and Metadata API, because Streaming API is about events and notifications, and there is no such thing as Test API.

   Source: Adapted from community discussion — Liquad

   References

   • developer.salesforce.com documentation
   • developer.salesforce.com documentation
   • developer.salesforce.com documentation
   • developer.salesforce.com documentation

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2. Question 272 · 279 in bank

   Select 2

   Which statement is true about using ConnectApi namespace (also called Chatter in Apex)? (Choose two.)

   • AChatter in Apex methods honor the 'with sharing' and 'without sharing' keywords
   • BChatter in Apex operations are synchronous, and they occur immediately
   • CChatter in Apex methods do not run in system mode; they run in the context of the current user
   • DMany test methods related to Chatter in Apex require the IsTest (SeeAllData=true) annotation

   Show answer

   Answer: CD

   References

   • developer.salesforce.com documentation
   • developer.salesforce.com documentation

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3. Question 273 · 279 in bank

   A developer receives a LimitException: Too many query rows: 50001 error when running code. What debugging approach using the Developer Console provides the fastest and most accurate mechanism to identify a specific component that may be returning an unexpected number of rows?

   • ACount the number of Row Limit warning messages in the Debug Logs
   • BAdd System.debug(System.getQueryRows()) to the code to track SOQL usage
   • CFilter the Debug Log on SOQL_EXECUTE_END statements to track the results of each SOQL Query
   • DUse the Execution Overview to see the number of rows returned by each Executed Unit

   Show answer

   Answer: D

   Explanation

   Definitely D, the limit is cumulative across all the SOQL queries in the transaction. So jumping from each SOQL invocation from the raw log view could take a while till you understand the whole picture which led to 50000+ records being queried.

   Source: Adapted from community discussion — Segre

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4. Question 274 · 279 in bank

   A developer is writing a Visualforce page to display a list of all of the checkbox fields found on a custom object. What is the recommended mechanism the developer should use to accomplish this?

   • ASchema Class
   • BApex API
   • CSchema Builder
   • DMetadata API

   Show answer

   Answer: A

   References

   • developer.salesforce.com documentation
   • developer.salesforce.com documentation

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5. Question 275 · 279 in bank

   A developer has created a Team Member sObject that has a Master-Detail relationship to a Project sObject and a Lookup relationship to the User sObject. The developer must ensure that a User listed on a Team Member record has Read-Write access to the parent Project record. How can the developer accomplish this if the Project sObject has a Private sharing model and thousands of Project records?

   • ACreate a Controller that uses the Without Sharing keyword
   • BCreate a Criteria-Based Sharing Rule on the Project sObject
   • CCreate a Team Member Trigger that inserts Project_Share records
   • DCreate a Project Sharing Rule that shares to the Team Member Group

   Show answer

   Answer: C

   References

   • developer.salesforce.com documentation
   • developer.salesforce.com documentation

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6. Question 276 · 279 in bank

   1 Contact con = new Contact( LastName ='Smith', Department = 'Admin') 2 insert con; 3 Contact insertedContact=[select Name from Contact where id=:con.Id]; 4 Savepoint sp_admin = Database.setSavepoint(); 5 con.Department = 'HR'; 6 update con; 7 Database.rollback(sp_admin); 8 System.debug(Limits.getDmlStatements()); Given the following code, what value will be output in the logs by line #8?

   • A5
   • B3
   • C4
   • D2

   Show answer

   Answer: C

   Explanation

   Calls to the following methods count against the number of DML statements issued in a request. Approval.process Database.convertLead Database.emptyRecycleBin Database.rollback Database.setSavePoint delete and Database.delete insert and Database.insert merge and Database.merge undelete and Database.undelete update and Database.update upsert and Database.upsert EventBus.publish for platform events configured to publish after commit System.runAs

   Source: Adapted from community discussion — santo_aj

   References

   • developer.salesforce.com documentation

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7. Question 277 · 279 in bank

   Select 2

   What is a recommended practice with regard to the Apex CPU limit? (Choose two.)

   • AOptimize SOQL query performance
   • BUse Map collections to cache sObjects
   • CAvoid nested Apex iterations
   • DReduce view state in Visualforce pages

   Show answer

   Answer: AC

   Explanation

   What's not counted: Database operations, e.g. the portion of execution time spent in the database for DML, SOQL, and SOSL isn’t counted, nor is waiting time for Apex callouts., SOQL https://help.salesforce.com/s/articleView?id=000339361&type=1

   Source: Adapted from community discussion — drwebber

   References

   • Salesforce Help

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8. Question 278 · 279 in bank

   Select 2

   A developer wants to create a Visualforce page that allows a user to search for a given account by Name. If the account is found, the account details should be populated on screen. If no account is found, an error message should be displayed to the user. How can this be accomplished? (Choose two.)

   • AUse the (apex: information) tag to display the error message
   • BUse the ApexPages.addMessage() method to add the error message
   • CUse the <apex:pageMessages> tag to display the error message
   • DUse the account.addError() method to add the error message

   Show answer

   Answer: BC

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9. Question 279 · 279 in bank

   Select 3

   A developer has built a multi-page wizard using a single Custom Controller to query and update data. Users are complaining that the pages are loading slowly. What will improve performance? (Choose three.)

   • AReducing the view state
   • BUsing actionRegion and rerender
   • CTurning off the standard stylesheet
   • DSetting the Apex Page attribute cache=true
   • EUsing selective queries

   Show answer

   Answer: ABE

   Explanation

   Correct Answer: ABE By default, pages that do not have the cache attribute set are cached for ten minutes (600 seconds). So it already defatuls to cache=true and it will not have effect in page loading. Only the components in the body of the are processed by the server, thereby increasing the performance of the page.

   Source: Adapted from community discussion — Liquad

   References

   • Salesforce Help

Keyboard:J Kmove between questionsA–Dselect an answerRshow or hide the answer← →change page

PD2 practice, question 271. 279 questions available.