DEX-450試験問題集でPDF問題とテストエンジン
DEX-450問題集で必ず試験合格させる
質問 15
What is an accurate statement about variable scope? (Choose 3)
- A. Sub-blocks can reuse a parent block's variable name if it's value is null.
- B. Sub-blocks cannot reuse a parent block's variable name.
- C. A static variable can restrict the scope to the current block of its value is null.
- D. A variable can be defined at any point in a block.
- E. Parallel blocks can use the same variable name.
正解: B,D,E
質問 16
The sales management team requires that the lead source field of the Lead record be populated when Lead is converted. What would a developer use to ensure that a user populates the Lead source field?
- A. Validation rule
- B. Process builder
- C. Formula field
- D. Workflow rule
正解: A
質問 17
Which two are best practices when it comes to component and application event handling? Choose 2 answers
- A. Handle low-level events in the event handler and re-fire them as higher-level events. (Missed)
- B. Try to use application events as opposed to component events.
- C. Use component events to communicate actions that should be handled at the application level.
- D. Reuse the event logic in a component bundle, by putting the logic in the helper. (Missed)
正解: A,D
質問 18
Which statement is true about a hierarchical relationship as it pertains to user records?
- A. It uses a special lookup relationship to allow one user record to be related to another user record
- B. It uses a junction object and lookup relationships to allow many user records to be related to many other user records
- C. It uses a master-detail relationship to allow one user record to be related to another user record
- D. It uses a junction object and master-detail relationship to allow many user records to be related to many other user records
正解: A
質問 19
Which user can edit a record after it has been locked for approval? (Choose 2)
- A. Any user who approved the record previously
- B. A user who is assigned as the current approver
- C. Any user with a higher role in the hierarchy
- D. An administrator
正解: B,D
質問 20
Universal Containers stores the availability date on each Line Item of an Order and Orders are only shipped when all of the Line Items are avaible. Which method should be used to calculate the estimated ship date for an Order?
- A. Use a Max Roll-Up Summary field on the Latest availability date fields.
- B. Use a LATEST formula on each of the latest availability date fields.
- C. Use a CEILING formula on each of the Latest availability date fields.
- D. Use a DAYS formula on each of the availability date fields and a COUNT Roll-Up Summary field on the Order.
正解: A
質問 21
A developer executes the following query in Apex to retrieve a list of contacts for each account:
List<account> accounts = [Select ID, Name, (Select ID, Name from Contacts) from Account] ; Which two exceptions may occur when it executes? (Choose two.)
- A. SOQL query limit exception due to the number of contacts.
- B. SOQL query row limit exception due to the number of contacts.
- C. CPU limit exception due to the complexity of the query.
- D. SOQL query row limit exception due to the number of accounts.
正解: A,D
質問 22
A developer has the controller class below.
Which code block will run successfully in an execute anonymous window?
- A. myFooController m = new myFooController();System.assert(m.prop ==null);
- B. myFooController m = new myFooController();System.assert(m.prop ==1);
- C. myFooController m = new myFooController();System.assert(m.prop !=null);
- D. myFooController m = new myFooController();System.assert(m.prop ==0);
正解: A
質問 23
Which two condition cause workflow rules to fire? Choose 2 answers
- A. An Apex batch process that changes field values
- B. Changing territory assignments of accounts and opportunities
- C. Updating record using bulk API
- D. Converting leads to person account
正解: A,C
質問 24
When are code coverage calculations updated?
- A. When a deployment is validated.
- B. When unit tests are run on an organization.
- C. When changes are made to an organization's configuration.
- D. When Apex code is saved.
正解: B
質問 25
Developer needs to automatically populate the Reports To field in a Contact record based on the values of the related Account and Department fields in the Contact record. Which type of trigger would the developer create? Choose 2 answers
- A. After insert
- B. After update
- C. Before update
- D. Before insert
正解: C,D
質問 26
Which two statement can a developer use to throw a custom exception of type MissingFieldValueException?Choose 2 answers
- A. Throw new MissingFieldValueException();
- B. Throw new MissingFieldValueException('Problem occurred');
- C. Throw Exception(new MissingFieldValueException());
- D. Throw (MissingFieldValueException,'Problem occurred');
正解: A,B
質問 27
A developer creates a new Apex trigger with a helper class, and writes a test class that only exercises 95% coverage of new Apex helper class. Change Set deployment to production fails with the test coverage warning: "Test coverage of selected Apex Trigger is 0%, at least 1% test coverage is required" What should the developer do to successfully deploy the new Apex trigger and helper class?
- A. Increase the test class coverage on the helper class
- B. Remove the falling test methods from the test class.
- C. Create a test class and methods to cover the Apex trigger
- D. Run the tests using the 'Run All Tests' method.
正解: C
質問 28
A developer working on a time management application wants to make total hours for each timecard available to application users. A timecard entry has a Master-Detail relationship to a timecard.
Which approach should the developer use to accomplish this declaratively?
- A. A Process Builder process that updates a field on the timecard when a timecard entry is created
- B. An Apex trigger that uses an Aggregate Query to calculate the hours for a given timecard and stores it in a custom field
- C. A Roll-Up Summary field on the Timecard Object that calculates the total hours from timecard entries for that timecard
- D. A Visualforce page that calculates the total number of hours for a timecard and displays it on the page
正解: C
質問 29
Where can a developer identify the time taken by each process in a transaction using Developer Console log inspector?
- A. Performance Tree tab under Stack Tree panel
- B. Timeline tab under Execution Overview panel
- C. Save Order tab under Execution Overview panel
- D. Execution Tree tab under Stack Tree panel
正解: B
質問 30
A developer must implement a CheckPaymentProcessor class that provides check processing payment capabilities that adhere to what defined for payments in the PaymentProcessor interface. public interface PaymentProcessor { void pay(Decimal amount); } Which is the correct implementation to use the PaymentProcessor interface class?
- A. Public class CheckPaymentProcessor implements PaymentProcessor {
public void pay(Decimal amount);
} - B. Public class CheckPaymentProcessor implements PaymentProcessor {
public void pay(Decimal amount) {}
} - C. Public class CheckPaymentProcessor extends PaymentProcessor {
public void pay(Decimal amount);
} - D. Public class CheckPaymentProcessor extends PaymentProcessor {
public void pay(Decimal amount) {}
}
正解: B
質問 31
Which control statement should a developer use to ensure that a loop body executes at least once?
- A. For(variable : list_or_set){}
- B. While (condition){}
- C. For(init_stmt;exit_cond;increment){}
- D. Do {} while (cond)
正解: D
質問 32
Which trigger event allows a developer to update fields in the Trigger.new list without using an additional DML statement?Choose 2 answers
- A. After insert
- B. After update
- C. Before update
- D. Before insert
正解: C,D
質問 33
Which two are true regarding a Dyno? Choose 2 answers
- A. Has Ephemeral filesystems and is rebooted every 24 hours.
- B. Is a lightweight Linux container used in a collection to run Heroku applications
- C. Has the ability to sleep as a standard and performance Dyno
- D. Is a light weight VM used to run code on the Heroku Platform
正解: A,B
質問 34
How should a developer make sure that a child record on a custom object, with a lookup to the Account object, has the same sharing access as its associated account?
- A. Ensure that the relationship between the objects is Master-Detail.
- B. Create a validation rule on the custom object comparing the record owners on both records.
- C. Create a Sharing Rule comparing the custom object owner to the account owner.
- D. Include the sharing related list on the custom object page layout.
正解: A
質問 35
Which option would a developer use to display the Accounts created in the current week and the number of related Contacts using a debug statement in Apex?
- A. For(Account acc:[SELECT Id, Name, Account.Contacts FROM Account WHERE CreatedDate = CURRENT_WEEK]) { List cons = acc.Account.Contacts; System.debug(acc.Name + ' has ' + cons.size() + 'Contacts'); }
- B. For(Account acc: [SELECT Id, Name, Account.Contacts FROM Account WHERE CreatedDate = THIS_WEEK]){ List cons = acc.Account.Contacts; System.debug(acc.Name + ' has ' + cons.size() + 'Contacts' }
- C. For(Account acc: [SELECT Id, Name, (SELECT Id, Name FROM Contacts) FROM Account WHERE CreatedDate = CURRENT_WEEK]){ List cons = acc.Contacts; System.debug(acc.Name + ' has ' + cons.size() + 'Contacts'); }
- D. For(Account acc: [SELECT Id, Name,(SELECT Id, Name FROM Contacts) FROM Account WHERE CreatedDate = THIS_WEEK]) { List cons = acc.Contacts; System.debug(acc.Name + ' has ' + cons.size() + 'Contacts'; }
正解: D
質問 36
A developer needs to update an unrelated object when a record gets saved. Which two trigger types should the developer create?
- A. After insert
- B. After update
- C. Before update
- D. Before insert
正解: C,D
質問 37
Universal Containers has large number of custom applications that were built using a third-party javaScript framework and exposed using Visualforce pages. The Company wants to update these applications to apply styling that resembles the look and feel of Lightning Experience. What should the developer do to fulfill the business request in the quickest and most effective manner?
- A. Enable Available for Lightning Experience, Lightning Comminities, and the mobile app on Visualforce pages used by the custom application.
- B. Set the attribute enableLightning to treu in the definition.
- C. Incorporate the Salesforce Lightning Design System CSS stylesheet into the JavaScript applications.
- D. Rewrite all Visualforce pages asLightning components.
正解: B
質問 38
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Salesforce DEX-450 認定試験の出題範囲：
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合格させるSalesforce DEX-450試験最速合格にはFast2test：https://jp.fast2test.com/DEX-450-premium-file.html
DEX-450試験問題（更新されたのは2022年）100%リアル問題解答：https://drive.google.com/open?id=1nSMYpJdWQzAJyxOjUTkxAoKzYu6zEQ45