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Guide for TVB-450: Salesforce Trailhead Virtual Bootcamp for Platform Developer I

Quiz TVB-450: Salesforce Trailhead Virtual Bootcamp for Platform Developer I

Updated on 2026/09/23

PDF|

Guide for TVB-450: Salesforce Trailhead Virtual Bootcamp for Platform Developer I

Updated on 2026/09/23

Randomized | 10 Questions per Test | 20 Minutes | 70% to pass

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4.8

Quiz

Question 1/101/10

Which three steps allow a custom SVG to be included in a Lightning web component? Choose 3
answers

Select multiple answer: (Choose 3)Select the answer

3 correct answers

Upload the SVG as a static resource.

Import the static resource and provide a getter for it in JavaScript.

Reference the getter in the HTML template.

Reference the import in the HTML template.

Import the SVG as a content asset file.

Quiz

Question 2/102/10

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

Select the answer:Select the answer

1 correct answer

Workflow Rule

Process Builder

Approval Process

Flow Builder

Quiz

Question 3/103/10

A developer is tasked to perform a security review of the ContactSearch Apex class that exists in the
system. Whithin the class, the developer identifies the following method as a security threat:
List<Contact> performSearch(String lastName){ return Database.query('Select Id, FirstName,
LastName FROM Contact WHERE LastName Like %'+lastName+'%); } What are two ways the
developer can update the method to prevent a SOQL injection attack? Choose 2 answers

Select multiple answer: (Choose 2)Select the answer

2 correct answers

Use variable binding and replace the dynamic query with a static SOQL.

Use the escapeSingleQuote method to sanitize the parameter before its use.

Use a regular expression on the parameter to remove special characters.

Use the @Readonly annotation and the with sharing keyword on the class.

The correct answers are A and B.
Why this is a security issue
The method builds SOQL by directly concatenating user input into the query string:
List<Contact> performSearch(String lastName){
return Database.query(
'Select Id, FirstName, LastName FROM Contact WHERE LastName Like %'+lastName+'%'
);
}
Because lastName comes from outside the class, an attacker could supply input that changes the meaning of the query. This is called SOQL injection.
Why A is correct
A. Use variable binding and replace the dynamic query with a static SOQL.
This is the safest and preferred fix. Variable binding inserts the value as data instead of executable query text, which prevents malicious input from altering the query logic.
Example:
List<Contact> performSearch(String lastName) {
return ;
}
Or another safe pattern using dynamic SOQL with bind variables when appropriate.
Why B is correct
B. Use the escapeSingleQuote method to sanitize the parameter before its use.
This can help prevent injection when dynamic SOQL must be used, because it escapes single quotes in the input so the attacker cannot break out of the string literal.
Example:
String safeLastName = String.escapeSingleQuotes(lastName);
return Database.query(
'SELECT Id, FirstName, LastName FROM Contact WHERE LastName LIKE \'%' +
safeLastName +
'%\''
);
Important note: escaping single quotes is a mitigation, but variable binding is generally the better and safer approach.
Why C is not correct
C. Use a regular expression on the parameter to remove special characters.
Regular expressions can be used for input validation, but this is not a reliable or recommended primary defense against SOQL injection. It is easy to miss dangerous cases, and validation alone does not guarantee the query is safe.
Why D is not correct
D. Use the @Readonly annotation and the with sharing keyword on the class.
These do not prevent SOQL injection.
with sharing controls record sharing rules, not query injection.
@Readonly is not a valid protection against injection in this context.
Summary
The best ways to prevent SOQL injection here are:
A. Use variable binding and replace the dynamic query with a static SOQL.
B. Use the escapeSingleQuote method to sanitize the parameter before its use.
If you'd like, I can also show the corrected Apex code for this method.

Right Answer: A, B

Quiz

Question 4/104/10

A developer uses a loop to check each Contact in a list. When a Contact with the Title of
“Boss” is found, the Apex method should jump to the first line of code outside of the for
loop.
Which Apex solution will let the developer implement this requirement?

Select the answer:Select the answer

1 correct answer

break;

Continue

Exit

Quiz

Question 5/105/10

The values 'High', 'Medium', and 'Low' are Identified as common values for multiple picklist across
different object. What is an approach a developer can take to streamline maintenance of the picklist
and their values, while also restricting the values to the ones mentioned above?

Select the answer:Select the answer

1 correct answer

Create the Picklist on each object and use a Global Picklist Value Set containing the Values.

Create the Picklist on each object as a required field and select "Display values alphabeticaly, not in the order entered".

Create the Picklist on each object and select "Restrict picklist to the values defined in the value set".

Create the Picklist on each and add a validation rule to ensure data integrity.

The correct answer is A.
The question asks for an approach that does two things at the same time:
1. Streamline maintenance of the picklist and its values across multiple objects
2. Restrict the available values to only High, Medium, and Low
The best solution is to use a Global Picklist Value Set.
Why A is correct:
A Global Picklist Value Set lets you define the picklist values once and reuse that same set across multiple objects. This makes maintenance easier because if the values ever change, you update them in one place instead of updating each object separately.
In this case:
- High
- Medium
- Low
can be stored in a global value set and then used by picklist fields on multiple objects.
This satisfies both requirements:
- Centralized maintenance
- Controlled, limited values
Why the other options are incorrect:
B. Create the Picklist on each object as a required field and select "Display values alphabetically, not in the order entered".
- Making a field required does not streamline maintenance.
- Alphabetical display only changes how values appear, not how they are managed.
- This does not help share the values across objects.
C. Create the Picklist on each object and select "Restrict picklist to the values defined in the value set".
- This sounds close, but it does not address streamlined maintenance by itself.
- The key part of the question is sharing the same values across multiple objects.
- A global value set is the feature that enables that centralized reuse.
D. Create the Picklist on each and add a validation rule to ensure data integrity.
- A validation rule can prevent invalid entries, but it does not simplify maintenance.
- You would still have to manage the list of values separately for each object.
- This is more of a workaround than the proper design.
Summary:
Use a Global Picklist Value Set when the same picklist values, such as High, Medium, and Low, need to be reused across multiple objects. It reduces maintenance effort and keeps the values consistent.
Answer: A

Right Answer: A

Quiz

Question 6/106/10

Which aspect of Apex programming is limited due to multitenancy?

Select the answer:Select the answer

1 correct answer

The number of active Apex classes

The number of methods in an Apex Class

The number of records processed in a loop

The number of records returned from database queries

The correct answer is D. The number of records returned from database queries.
Apex runs on the Salesforce platform, which is a multitenant environment. In a multitenant system, many customers share the same underlying resources, so Salesforce enforces governor limits to prevent any one user or organization from consuming too much processing power, memory, or database resources.
One important limit is the number of records that can be returned from database queries. If a query returns too many records, it can consume excessive memory and processing resources, affecting performance for other tenants. To maintain platform stability and fairness, Salesforce limits how much data can be retrieved and processed in a single Apex transaction.
Why the other options are not correct:
A. The number of active Apex classes
This is not the main limitation directly tied to multitenancy in the context of Apex execution. While there are org limits related to metadata and code storage, this is not the specific runtime governor limit being asked about.
B. The number of methods in an Apex Class
Apex classes can contain many methods, and there is no standard multitenancy-driven limit on the number of methods in a single class in the way the question suggests.
C. The number of records processed in a loop
Apex can process many records in loops, but the real concern is often how many records are queried, how they are handled, and whether limits like CPU time or heap size are exceeded. The question specifically asks about a limitation due to multitenancy, and record retrieval from queries is the best fit.
D. The number of records returned from database queries
This is correct because database query results are subject to governor limits to protect shared resources in the multitenant Salesforce environment.
Summary:
Multitenancy requires Salesforce to limit resource usage across all users. In Apex, this is reflected in limits on database query results, making D the correct answer.

Right Answer: D

Quiz

Question 7/107/10

Universal Containers has an order system that uses an Order Number to identify an order for
customers and service agents. Order will be imported into Salesforce.

Select the answer:Select the answer

1 correct answer

Lookup

Direct Lookup

Number with External ID

Indirect Lookup

Quiz

Question 8/108/10

A Visual Flow uses an apex Action to provide additional information about multiple Contacts, stored
in a custom class, contactInfo. Which is the correct definition of the Apex method that gets additional
information?

Select the answer:Select the answer

1 correct answer

@InvocableMethod(label='Additional Info') public List<ContactInfo> getInfo(List<Id> contactIds) { /*implementation*/ }

@InvocableMethod(label='additional Info') public static ContactInfo getInfo(Id contactId) { /*implementation*/ }

@invocableMethod(label)='Additional Info') public static List<ContactInfo> getInfo(List<Id> contactIds) { /*Implementation*/ }

@InvocableMethod(Label='additional Info') public ContactInfo(Id contactId) { /*implementation*/ }

Quiz

Question 9/109/10

Universal Containers wants to back up all of the data and attachments in its Salesforce org once
month. Which approach should a developer use to meet this requirement?

Select the answer:Select the answer

1 correct answer

Use the Data Loader command line.

Create a Schedulable Apex class.

Schedule a report.

Define a Data Export scheduled job.

Quiz

Question 10/1010/10

Select the answer:Select the answer

1 correct answer

@InvocableMethod(label='Additional Info') public List<ContactInfo> getInfo(List<Id> contactIds) { /*implementation*/ }

@InvocableMethod(label='additional Info') public static ContactInfo getInfo(Id contactId) { /*implementation*/ }

@invocableMethod(label)='Additional Info') public static List<ContactInfo> getInfo(List<Id> contactIds) { /*Implementation*/ }

@InvocableMethod(Label='additional Info') public ContactInfo(Id contactId) { /*implementation*/ }

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