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Salesforce Programmatic Development using Apex and Visualforce in Lightning Experience Sample Questions (Q142-Q147):

NEW QUESTION # 142
A developer must write an Apex method that will be called from a Lightning component. The method may delete an Account stored in the accountRec variable.
Which method should a developer use to ensure only users that should be able to delete Accounts can successfully perform deletions?

A. Schema.sObjectType.Account,isDeletetable() Account,isDelecable ()
B. accountRec.a0biectType.iaDeletable()
C. Account,iaDelecable ()
D. accountRec.islCelezable()

Answer: A

Explanation:
To check whether the current user has permission to delete an Account, the developer should use the Schema.sObjectType methods.
Option D: Schema.sObjectType.Account.isDeletable()
Correct Method.
The Schema.sObjectType.Account provides describe information about the Account object.
The isDeletable() method returns a Boolean indicating whether the current user has permission to delete records of this type.
Usage:
if (Schema.sObjectType.Account.isDeletable()) {
// User has permission to delete Accounts
delete accountRec;
} else {
// Handle lack of permission
}
Options Not Applicable:
Option A: Account.isDeletable()
No such static method on the Account object.
Option B: accountRec.sObjectType.isDeletable()
sObjectType returns a token; to get describe results, you need to call getDescribe().
Option C: accountRec.isDeletable()
There is no instance method isDeletable() on sObject records.
Conclusion:
To ensure proper permission checks, the developer should use Schema.sObjectType.Account.isDeletable(), which is Option D.

NEW QUESTION # 143
A developer considers the following snippet of code:

Based on this code, what is the value of %?

A. 0
B. 1
C. 2
D. 3

Answer: B

Explanation:
In the provided code snippet:
Boolean isOK;
Integer x;
String theString = 'Hello';
if (isOK == false && theString == 'Hello') {
x = 1;
} else if (isOK == true && theString == 'Hello') {
x = 2;
} else if (isOK != null && theString == 'Hello') {
x = 3;
} else {
x = 4;
}
Variable Initialization:
Boolean isOK; → Declared but not initialized, so isOK is null.
Integer x; → Declared but not initialized.
String theString = 'Hello'; → Initialized to 'Hello'.
Evaluation of Conditions:
First Condition:
if (isOK == false && theString == 'Hello')
isOK == false → Since isOK is null, this evaluates to false.
Overall condition: false && true → false.
Second Condition:
else if (isOK == true && theString == 'Hello')
isOK == true → Since isOK is null, this evaluates to false.
Overall condition: false && true → false.
Third Condition:
else if (isOK != null && theString == 'Hello')
isOK != null → Since isOK is null, this evaluates to false.
Overall condition: false && true → false.
Else Block:
else {
x = 4;
}
Since none of the previous conditions are met, the else block is executed.
x is assigned the value 4.
Conclusion:
The variable x is assigned the value 4.
Reference:
Variable Initialization:
"Instance variables are initialized to null. Local variables are not initialized, so their value is undefined until you assign a value."
- Apex Developer Guide: Variables
Conditional Statements and Null Values:
"In Apex, comparisons with null are straightforward. If you compare null to a value, the result is false."
- Apex Developer Guide: Expressions

NEW QUESTION # 144
What are two ways for a developer to execute tests in an org?

A. Matadata API
B. Bulk API
C. Tooling API
D. Developer console

Answer: C,D

NEW QUESTION # 145
Which process automation should be used to send an outbound message without using Apex code?

A. Workflow Rule
B. Approval Process
C. Flow Builder
D. Process Builder

Answer: A

NEW QUESTION # 146
A developer is notified that a text field is being automatically populated with invalid values.however, this should be prevented by a custom validation rule that is in placewhat could be causing this?

A. The user belongs to a permission set that suppresses the validation rule
B. The field is being populated by a workflow field update
C. The field is being populated by a before trigger
D. A DML exception is occuring during the save order of execution

Answer: B

NEW QUESTION # 147
......

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Preparing Salesforce DEX-450 Exam is Easy with Our High-quality Reliable DEX-450 Exam Prep: Programmatic Development using Apex and Visualforce in Lightning Experience

Quiz 2025 Salesforce DEX-450: Programmatic Development using Apex and Visualforce in Lightning Experience Unparalleled Reliable Exam Prep

Salesforce Programmatic Development using Apex and Visualforce in Lightning Experience Sample Questions (Q142-Q147):

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