Salesforce Certified Marketing Cloud Engagement Developer 1-10

In an Enterprise 2.0 account, a deletion request via the Contact Delete function must be initiated from the parent account.
This function targets contact information across the entire Enterprise 2.0 account and its associated business units, so it is not something that can be run arbitrarily at the individual child business unit level.
Therefore, options A and D are incorrect.
It is also not a function exclusive to the Agency account, so C is incorrect as well.
Note that Marketing Cloud is now commonly referred to as Marketing Cloud Engagement following the reorganization of the product family names.
Deleting Contacts in Contact Builder

Even if you remove records from the sync scope, they are only removed from the synchronized data extension; they are not deleted from All Contacts in Marketing Cloud Engagement.
To delete the billable contacts, you must create a sendable data extension containing the Contact Keys to be deleted and run Contact Delete.
Deleting from All Subscribers or deleting via the SOAP API does not remove the entire contact record from All Contacts.
Note that Marketing Cloud is now organized under the product name Marketing Cloud Engagement.
Deleting Contacts in Contact Builder

SentEvent is a SOAP API object that holds tracking data related to sends, allowing you to check information about each individual subscriber who was targeted by an email send.
Therefore, to retrieve which subscribers a specific email was sent to, it is appropriate to use the SentEvent object.Send provides information about the send job itself, while ListSend provides send information at the list level and LinkSend provides link-related send information, none of which are suitable for checking send events per subscriber.
Note that Marketing Cloud is now commonly referred to as Marketing Cloud Engagement as its product name.
SentEvent

An Exclusion Script is used to exclude subscribers whose evaluation result is true from the send.
Since the primary key here is Subscriber Key, you match the SubscriberKey column of the Exclude data extension against _SubscriberKey, which represents the current subscriber.
LookupRows returns the set of matching rows and RowCount counts them, so the correct condition is > 0, indicating that one or more rows exist.
With > 1, a subscriber matched by only one row would not be excluded, so it is incorrect. Marketing Cloud is now organized under the name Marketing Cloud Engagement.
Create an Exclusion Script for Use in a Journey Builder Email Activity

To retrieve JSON data from the customer’s external API, you use Platform.Function.HTTPGet(), which can send an HTTP GET request to a URL.
You convert the retrieved JSON string into a JavaScript object with Platform.Function.ParseJSON(), and to save or update that content in a data extension, Platform.Function.UpsertData() is appropriate.InvokeRetrieve() is mainly used to retrieve SOAP API objects, so it is not suitable for daily JSON retrieval from an external API. Stringify() and Response.Write() are also not operations for saving to a data extension.
Marketing Cloud is now organized under the name Marketing Cloud Engagement.
Platform.Function.HTTPGet()
ParseJSON
UpsertData

DataExtensionObject is a SOAP API object that represents a single row record within a data extension.
When retrieving, updating, or inserting row data of a data extension via the SOAP API, you use this object. DataExtension represents the definition and configuration of the data extension itself, and DataExtensionField represents the column definitions, so they are not suitable for retrieving row data.
Also, Row is not a valid object used in this SOAP API call.
Therefore, the correct answer is DataExtensionObject.
Marketing Cloud is now organized under the name Marketing Cloud Engagement.
DataExtensionObject
Retrieving Data from a Data Extension

To create a contact in Marketing Cloud Engagement, you use the POST /contacts/v1/contacts route of the Contacts API.
This endpoint is part of the REST API and can create a new contact including a set of attributes such as email address and mobile-related attributes.
The SOAP API is mainly used for email functions and data extension operations, but it is not an appropriate choice for creating a contact via the Contacts API.
Also, the Contact object refers to a standard object on the Salesforce Platform side, so it is different from creation via the Contacts API in Marketing Cloud Engagement.
POST /contacts/v1/contacts
Marketing Cloud Engagement API Reference

In a custom profile center, you need to understand the field structure of subscribers and related objects and save the profile information that users have changed.
The SOAP API Describe method is used to retrieve metadata such as the properties and fields available on the target object.
Also, to change existing subscriber information or data, you use the Update method.
Extract is an extraction operation and Configure is a configuration-change operation, so neither is suitable for the main purpose of checking and updating profile information. Marketing Cloud is now organized under the name Marketing Cloud Engagement.
Describe
Update

View Email As Web Page (VAWP) is a function that displays the email content from the time of sending as a web page.
Because this link references the original email asset to render it, if the email is deleted, updated, or moved after the send, it may no longer be displayable.
As a result, an error indicating that the system is temporarily unavailable is displayed.
Changing the data in a data extension, moving a folder, or overwriting the sender profile are not the direct cause of the VAWP link being unable to retrieve the original email content.
Note that Marketing Cloud is now organized under the name Marketing Cloud Engagement.
“View Email as a Web Page” Shows the Error “The System Is Temporarily Unavailable”

In Marketing Cloud Engagement, a Contact is a concept that represents an individual across multiple channels, while a Subscriber refers to a subscriber record belonging to a specific channel such as email.
Salesforce’s learning materials also explain that every Subscriber is a Contact, but not every Contact is necessarily a Subscriber.
Therefore, B is incorrect and C is correct.
Also, since a Contact may be associated with a specific channel such as email, SMS, or Push, D is also correct.
Option A’s “any channel” is too broad in meaning and is not accurate. Marketing Cloud is now organized under the name Marketing Cloud Engagement.
Understand Contacts and Contact Model Relationships