CHFI Mobile and Malware Forensics Practice Question
An investigator examines an iPhone backup file. Inside the backup manifest, they find a file path 'AppDomainGroup-group.com.example.app'. This indicates the data belongs to which type of app container?
⚠ Common exam trap
EC-Council often tests the distinction between 'AppDomain-' (single app sandbox) and 'AppDomainGroup-' (shared container), and candidates mistakenly pick the sandbox container option because they overlook the 'group' keyword in the path.
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
A shared container for multiple apps from the same developer
The file path 'AppDomainGroup-group.com.example.app' indicates a shared container used by App Groups, a feature that allows multiple apps from the same developer to share data. This is not a sandbox container for a single app, nor is it a system or temporary container. The 'group' prefix and the bundle identifier pattern confirm it belongs to a shared app group container.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
System container for iOS system apps
Why it's wrong here
System containers are reserved for Apple's own iOS system applications and are identified by the 'SysContainerDomain-' directory prefix in a backup. A path using 'AppDomainGroup-' clearly does not match that naming convention, and system containers would never hold data for third-party developer app groups. Therefore, this classification is incorrect.
- ✗
The app's sandbox container
Why it's wrong here
A single app's sandbox container is stored under the 'AppDomain-' prefix followed by the app's bundle identifier, such as 'AppDomain-com.example.app'. This sandbox contains the app's private Library, Documents, and tmp subdirectories, but not a separate shared area. Since the path in question uses the 'AppDomainGroup-' prefix, it cannot be a standard single-app sandbox container.
- ✓
A shared container for multiple apps from the same developer
Why this is correct
The 'AppDomainGroup-' prefix in an iOS backup identifies a shared container that is part of an app group, which allows multiple apps from the same developer to access common files and preferences. These groups are declared via the com.apple.security.application-groups entitlement, and the container is stored outside each app's individual sandbox. Therefore, when an investigator sees this prefix, it correctly means a shared container for multiple apps from the same developer.
- ✗
Temporary container for app data
Why it's wrong here
Temporary app data is not stored in a separate top-level container in an iOS backup; it resides in the 'tmp' subdirectory within a specific app's sandbox, under the 'AppDomain-' prefix (e.g., AppDomain-com.example.app/tmp). The observed 'AppDomainGroup-' prefix refers to a persistent shared container, not a temporary folder, and it is neither named 'tmp' nor scoped to a single app. Thus, this categorization is wrong.
Go deeper
Related to this question
About these practice questions
One of 745 original CHFI practice questions on Courseiva, each with a full explanation and wrong-answer analysis — not exam dumps or protected exam content. Learn why practice questions differ from exam dumps →
JA
Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This CHFI practice question is part of Courseiva's free EC-Council certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the CHFI exam.