The Open Virtualization Format (OVF) is a standard developed by the Distributed Management Task Force (DMTF) for packaging and distributing virtual machines and software. It ensures interoperability across virtualization platforms, making it a key virtualization standard.
* Option A (PCI DSS):A security standard for payment cards, not virtualization-related.
* Option B (CSA):An organization, not a standard, focused on cloud security.
* Option C (vCloud API):A VMware-specific API, not a DMTF standard.
* "The Open Virtualization Format (OVF), established by the DMTF, standardizes virtual machine packaging for portability and compatibility across platforms" (Module: Virtualization and Cloud Computing, Section: Virtualization Standards).

Explanation/Reference:

A Differential Backup copies all data changed since the last full backup, growing larger each time as more changes accumulate, matching Jonah's observation of increasing storage use.
* Option B (Online Data Backup):A delivery method, not a type.
* Option C (Incremental Backup):Only backs up changes since the last backup, not growing as much.
* Option D (Full System Backup):Copies everything, consistently large, not incremental growth.
* "Differential Backups expand daily by capturing all changes since the last full backup, increasing storage needs with each run" (Module: Data Backup and Recovery, Section: Backup Types).